CN107725067A - The general ring pipe sheet assembling point position of shield determines method - Google Patents
The general ring pipe sheet assembling point position of shield determines method Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
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Abstract
The invention discloses a kind of general ring pipe sheet assembling point position of subway shield tunnel construction to determine method, carries out Shield Construction Method Used to institute's construction tunnel from the front to the back along tunnel central axis using shield machine, Shield Construction Method Used carries out shield segment assembling construction after completing a ring；Before any ring shield segment assembling construction, first the pipe sheet assembling point position when front ring shield duct piece is determined, process is as follows：First, assembled point position may be selected to determine；2nd, influence index and its weight coefficient is selected to determine：The three selection influence indexs and its weight coefficient for influenceing pipe sheet assembling point position selection are determined respectively；3rd, the selective evaluation of assembled point position may be selected：Each optional assembled selectivity for putting position is evaluated respectively according to Exchanger Efficiency with Weight Coefficient Method, and determined when the pipe sheet assembling point position of front ring shield duct piece.The inventive method step is simple, reasonable in design and realization is convenient, using effect is good, and energy is easy, fast and accurately determines that position is put in the assembled of general endless tube piece.
Description
Present patent application is at 19 on the applying date 2016 year 2 month, application number 201610093860.3, invention and created name
For《A kind of general ring pipe sheet assembling point position of subway shield tunnel construction determines method》Application for a patent for invention divisional application.
Technical field
The invention belongs to Shield Construction Technique field, more particularly, to a kind of general ring pipe sheet assembling point of subway shield tunnel construction
Position determines method.
Background technology
Shield duct piece is the permanent lining, secondary lining structure of shield tunnel, and shield duct piece quality is directly connected to the overall matter in tunnel
Amount and safety, influence the water resistance and endurance quality in tunnel.One ring shield duct piece claims a section of jurisdiction ring.Universal segment refers to institute
Some section of jurisdiction loop types only have one kind, can both be used in straightway, it is also possible in curved section.General ring refers to universal segment lining cutting
Ring, also referred to as universal segment ring or universal wedge-shaped segment ring.Pipe sheet assembling uses staggered joint erection, and an endless tube piece is typically by several pieces of A
Type section of jurisdiction (i.e. calibrated bolck), two pieces of Type B sections of jurisdiction (i.e. adjacent block) and one piece of K-type section of jurisdiction (bind block, abbreviation K blocks) it is assembled and
Into.The position that pipe sheet assembling point position refers to bind in assembly where block (i.e. K blocks), the position in the middle part of the block that specifically binds.
The country, the shield duct piece indexed as 22.5 ° of indexing and 36 ° of indexing have general ring design.Based on the general ring in Tunnel Engineering section of jurisdiction
Assembly requires that the block that binds possibly be present at all indexing positions, the assembled point bit quantity for the block that bound in the shield duct piece of 36 ° of indexing
For 10, the assembled point bit quantity for the block that bound in the shield duct pieces of 22.5 ° of indexing is 16.As shown in figure 1,16 assembled point positions
(i.e. 16 assembled point positions to be selected) along being uniformly distributed clockwise, the block that bound in shield duct piece possibly be present at 16 assembled points to be selected
Any of position assembled point position to be selected, the two neighboring assembled angle γ put between position to be selected is 22.5 °.Wherein, the top
Assembly point position is 16 points, and the assembled point position of bottom is 8 points.Due to being staggered joint erection, each endless tube piece has 5 assembled point positions can
Selective, such as when the assembled point position of upper endless tube piece is 16, assembled point position that next endless tube piece can provide selection is 2 points, 5
The assembled point position of point, 8 points, 11 points and 14 points this five.At present in subway shield tunnel construction, general endless tube chip technology selects in section of jurisdiction
Type, typesetting, correction etc. achieve certain achievement, but the quantitative control that distance becomes more meticulous also has a certain distance.It is actual
When carrying out shield-tunneling construction, it is impossible to assembled point position that is easy, fast and accurately determining general endless tube piece.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that provide a kind of metro shield
General ring pipe sheet assembling point position of constructing determines method, and its method and step is simple, reasonable in design and realize that convenient, using effect is good,
Can assembled point position that is easy, fast and accurately determining general endless tube piece.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of general endless tube piece of subway shield tunnel construction
Assembly point position determines method, it is characterised in that：Institute's construction tunnel is carried out from the front to the back along tunnel central axis using shield machine
Shield Construction Method Used, Shield Construction Method Used carry out shield segment assembling construction after completing a ring；
Before any ring shield segment assembling construction, first the pipe sheet assembling point position when front ring shield duct piece is determined,
Process is as follows：
Determined Step 1: assembled point position may be selected：According to shield duct piece staggered joint erection method, and according to upper ring shield pipe
The pipe sheet assembling point position of piece, selected from 16 assembled point positions to be selected when 5 optional assembled point positions of front ring shield duct piece；
16 assembled point positions to be selected are along the circumferential direction uniformly laid and it is respectively 1 from front to back along clockwise direction
Point, 2 points ..., 16 points；
5 optional assembled point positions be denoted as respectively a points, b points, c points, d points and e points and its along clockwise direction by preceding
To rear arrangement；Wherein, a, b, c, d and e are positive integer, 1≤a≤16,1≤b≤16,1≤c≤16,1≤d≤16, and 1≤e≤
16；
Step 2: selection influence index and its weight coefficient determine：According to tunnel section residing for when front ring shield duct piece
Shield Construction Method Used parameter during Shield Construction Method Used is carried out, three selection influence indexs to influenceing pipe sheet assembling point position selection
It is determined respectively with the weight coefficient of three selection influence indexs；
Three selection influence indexs are respectively attitude of shield machine, shield machine jack progressive error and gap of the shield tail；
Step 3: the selective evaluation of assembled point position may be selected：Three selection shadows according to determined by step 2
Snap mark and its weight coefficient, and according to the Exchanger Efficiency with Weight Coefficient Method optional assembled selectivity minute for putting position described to 5 in step 1
Do not evaluated, and best one described optional assembly puts position as when front ring shield duct piece using the selectivity evaluated
Pipe sheet assembling point position.
A kind of above-mentioned general ring pipe sheet assembling point position of subway shield tunnel construction determines method, it is characterized in that：In institute's construction tunnel
It is initial ring shield duct piece positioned at most shield duct piece described in a ring of rear side, it is described when front ring shield duct piece is positioned at described initial
Shield duct piece described in a ring on front side of ring shield duct piece；
Complete after the assembled selective evaluation for putting position may be selected, also needed to when front ring shield segment assembling is constructed in step 3
After the completion of shield machine jack travel information and gap of the shield tail information be respectively calculated；
When front ring shield segment assembling construction after the completion of shield machine jack travel information include YGS, YGX, YGZ and
YGY；Wherein, YGS is the stroke of the shield machine top jack after the completion of the construction of front ring shield segment assembling, and YGX is to work as front ring
The stroke of shield machine bottom jack after the completion of shield segment assembling construction, YGZ are to construct to complete when front ring shield segment assembling
The stroke of shield machine left side jack afterwards, YGY are the shield machine right side jack after the completion of the construction of front ring shield segment assembling
Stroke；
Gap of the shield tail information after the completion of the construction of front ring shield segment assembling includes DWS, DWX, DWZ and DWY；Wherein,
DWS is the top gap of the shield tail after the completion of the construction of front ring shield segment assembling, and DWX is when front ring shield segment assembling has been constructed
Bottom gap of the shield tail after, DWZ are the left side gap of the shield tail after the completion of the construction of front ring shield segment assembling, and DWY is current
Right side gap of the shield tail after the completion of the construction of ring shield segment assembling.
A kind of above-mentioned general ring pipe sheet assembling point position of subway shield tunnel construction determines method, it is characterized in that：Three in step 2
The weight coefficient of attitude of shield machine is denoted as λ described in the selection influence indexZ, the weight coefficient of shield machine jack progressive error
It is denoted as λQ, the weight coefficient of gap of the shield tail is denoted as λD；Wherein, 0 ＜ λZThe ＜ λ of ＜ 1,0QThe ＜ λ of ＜ 1,0D＜ 1, λZ+λQ+λD=1.
A kind of above-mentioned general ring pipe sheet assembling point position of subway shield tunnel construction determines method, it is characterized in that：Three in step 2
The maximum weight coefficient of numerical value is denoted as λ in the weight coefficient of the selection influence indexM, λM=0.4~0.6；Three selections
The minimum weight coefficient of numerical value is denoted as λ in the weight coefficient of influence indexm, λm=0.1~0.3.
A kind of above-mentioned general ring pipe sheet assembling point position of subway shield tunnel construction determines method, it is characterized in that：To three in step 2
When the weight coefficient of the individual selection influence index is determined, first according to being carried out when tunnel section residing for front ring shield duct piece
Shield Construction Method Used parameter during Shield Construction Method Used, and setup parameter set in advance is combined, selection described on three influences
The influence degree of index is determined respectively；Weight coefficient=λ of the maximum selection influence index of influence degreeM, influence degree
Weight coefficient=λ of minimum selection influence indexm；
The setup parameter includes attitude of shield machine deviation threshold s, jack progressive error threshold value q and gap of the shield tail permissible value
d；Wherein, s ＞ 0, q ＞ 0 and d ＞ 0.
A kind of above-mentioned general ring pipe sheet assembling point position of subway shield tunnel construction determines method, it is characterized in that：Described in step 2
Shield Construction Method Used parameter includes attitude of shield machine parameter, shield machine jack progressive error parameter and gap of the shield tail parameter；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP is shield
Shield is relative to the horizontal departure amount of tunnel central axis in shield machine during structure tunneling construction, shield machine when CZ is Shield Construction Method Used
Middle shield relative to tunnel central axis vertical missing amount；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack stroke
Poor QSX；
The gap of the shield tail parameter includes top gap of the shield tail DS, bottom gap of the shield tail DX, left side gap of the shield tail DZ and the right side
Side gap of the shield tail DY；
When the influence degree of selection influence index described to three is determined, process is as follows：
Step 201, gap of the shield tail parameter judge：By the gap of the shield tail parameter middle and upper part gap of the shield tail DS, bottom shield tail
Clearance D X, left side gap of the shield tail DZ and right side gap of the shield tail DY carry out difference comparsion with gap of the shield tail permissible value d respectively：When DS,
When DX, DZ and DY are not less than d, into step 202；Otherwise, it is judged as described in three selection influence indexs between shield tail
The influence degree of gap is maximum, and the influence degree of the attitude of shield machine is minimum, and completes the shadow of three selection influence indexs
The degree of sound determination process；
Step 202, shield machine jack progressive error parameter judge：By left and right sides jack progressive error QZY and upper and lower sides thousand
Jin top progressive error QSX carries out difference comparsion with jack progressive error threshold value q respectively：When QZY and QSX is no more than q, into step
Rapid 203；Otherwise, it is judged as that the influence degree of shield machine jack progressive error described in three selection influence indexs is maximum,
The influence degree of the gap of the shield tail is minimum, and completes the influence degree determination process of three selection influence indexs；
Step 203, attitude of shield machine parameter judge：By shield machine horizontal attitude SP and shield machine perpendicular attitude CZ respectively with
Attitude of shield machine deviation threshold s carries out difference comparsion：As SP ＞ s or CZ ＞ s, it is judged as in three selection influence indexs
The influence degree of the attitude of shield machine is maximum, and the influence degree of the shield machine jack progressive error is minimum, and completes three
The influence degree determination process of the selection influence index；Otherwise, it is judged as shield described in three selection influence indexs
The influence degree of machine jack progressive error is maximum, and the influence degree of the gap of the shield tail is minimum, and completes three selection shadows
Snap target influence degree determination process.
A kind of above-mentioned general ring pipe sheet assembling point position of subway shield tunnel construction determines method, it is characterized in that：Described s=10mm
~100mm, q=30mm~100mm, d=5mm~55mm.
A kind of above-mentioned general ring pipe sheet assembling point position of subway shield tunnel construction determines method, it is characterized in that：Three in step 2
The weight coefficient of attitude of shield machine is denoted as λ described in the selection influence indexZ, the weight coefficient of shield machine jack progressive error
It is denoted as λQ, the weight coefficient of gap of the shield tail is denoted as λD；Wherein, 0 ＜ λZThe ＜ λ of ＜ 1,0QThe ＜ λ of ＜ 1,0D＜ 1, λZ+λQ+λD=1；
Shield Construction Method Used parameter described in step 2 includes attitude of shield machine parameter, shield machine jack progressive error parameter
With gap of the shield tail parameter；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP is shield
Shield is relative to the horizontal departure amount of tunnel central axis in shield machine during structure tunneling construction, shield machine when CZ is Shield Construction Method Used
Middle shield relative to tunnel central axis vertical missing amount；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack stroke
Poor QSX；Wherein, QZY=QZ-QY, QZ are to the shield when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of jack on the left of machine, QY are to the shield machine right side when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of side jack；QSX=QS-QX, QS are to when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of shield machine top jack, QX are to the shield when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of machine bottom jack；
The gap of the shield tail parameter includes top gap of the shield tail DS, bottom gap of the shield tail DX, left side gap of the shield tail DZ and the right side
Side gap of the shield tail DY；
, need to be to 16 institutes when being determined in step 2 to three selection influence indexs for influenceing pipe sheet assembling point position selection
Three selection influence indexs for stating each assembled point position to be selected in assembled point position to be selected are determined respectively；
Attitude of shield machine, shield machine thousand described in three selection influence indexs of n points in 16 assembled point positions to be selected
Jin top progressive error and gap of the shield tail, are denoted as Z (n), Q (n) and D (n) respectively；Wherein, n be positive integer and n=1,2 ..., 16；
When being determined to Z (n), Q (n) and D (n), shield is carried out according to tunnel section residing for when front ring shield duct piece
Shield Construction Method Used parameter during tunneling construction, and be determined with reference to setup parameter set in advance；The setup parameter bag
Include attitude of shield machine benchmark, attitude of shield machine deviation threshold s, jack progressive error threshold value q and gap of the shield tail permissible value d；Wherein,
S ＞ 0, q ＞ 0 and d ＞ 0；
The attitude of shield machine benchmark includes shield machine horizontal attitude benchmark Sj and shield machine perpendicular attitude benchmark Cj, wherein
Sj is relative to shield in the shield machine set in advance before progress Shield Construction Method Used in tunnel section residing for front ring shield duct piece
In the horizontal departure amount of tunnel central axis, Cj be to when tunnel section residing for front ring shield duct piece carry out Shield Construction Method Used it
In preceding shield machine set in advance shield relative to tunnel central axis vertical missing amount；
When being determined to Z (n), according to formula Z (n)=Z1(n)+Z2(n) (1) is determined；
In formula (1), Z1(n) according to shield machine horizontal attitude SP, shield machine horizontal attitude benchmark Sj and attitude of shield machine
Deviation threshold s is determined：
As SP-Sj ＜-s,
As-s≤SP-Sj ＜ 0,
As 0≤SP-Sj ＜ s,
As SP-Sj >=s,
In formula (1), Z2(n) according to shield machine perpendicular attitude CZ, shield machine perpendicular attitude benchmark Cj and attitude of shield machine
Deviation threshold s is determined：
As CZ-Cj≤- s,
As-s ＜ CZ-Cj≤0,
As 0 ＜ CZ-Cj≤s,
As CZ-Cj ＞ s,
When being determined to Q (n), according to formula Q (n)=Q1(n)+Q2(n) (2) are determined；
In formula (2), Q1(n) it is determined according to left and right sides jack progressive error QZY and jack progressive error threshold value q：
As QZY ＜-q,
As-q≤QZY ＜ 0,
As 0≤QZY ＜ q,
As QZY >=q,
In formula (2), Q2(n) it is determined according to upper and lower sides jack progressive error QSX and jack progressive error threshold value q：
As QSX≤- q,
As-q ＜ QSX≤0,
As 0 ＜ QSX≤q,
As QSX ＞ q,
When being determined to D (n), according to formulaCarry out true
It is fixed；
In formula (3), D1(n) it is determined according to top gap of the shield tail DS and gap of the shield tail permissible value d：
As DS ＜ d,
As DS >=d, D1(n)=0；
In formula (3), D2(n) it is determined according to bottom gap of the shield tail DX and gap of the shield tail permissible value d：
As DX ＜ d,
As DX >=d, D2(n)=0；
In formula (3), D3(n) it is determined according to left side gap of the shield tail DZ and gap of the shield tail permissible value d：
As DZ ＜ d,
As DZ >=d, D3(n)=0；
In formula (3), D4(n) it is determined according to right side gap of the shield tail DY and gap of the shield tail permissible value d：
As DY ＜ d,
As DY >=d, D4(n)=0.
A kind of above-mentioned general ring pipe sheet assembling point position of subway shield tunnel construction determines method, it is characterized in that：Carried out in step 3
When the selective evaluation of assembled point position may be selected, process is as follows：
Step 301, assembled point position preference degree calculating may be selected：16 spellings to be selected according to determined by step 2
Three selection influence indexs of each assembled point position to be selected in position are decorateeed, and with reference to the weight system of three selection influence indexs
Number, the preference degree of optional assembled point position described to 5 in step 1 are respectively calculated；
Shield described in three selection influence indexs of m points in 5 optional assembled point positions determined by step 2
Structure machine posture, shield machine jack progressive error and gap of the shield tail, are denoted as Z (m), Q (m) and D (m) respectively；Wherein, m is positive integer
And m=a, b, c, d or e；
When the preference degree of m points calculates in optional assembled point position described to 5, according to formula H (m)=λD·D
(m)+λQ·Q(m)+λZZ (m) (5) is calculated；
In this step, the preference degree of a points, b points, c points, d points and the e points that calculate, H (a), H (b), H are denoted as respectively
(c), H (d) and H (e)；
Step 302, optional assembled point position preference degree compare：5 optional spellings to being calculated in step 301
Preference degree H (a), H (b), H (c), H (d) and the H (e) for decorateeing position are compared, and from 5 optional assembled point positions
Find out the maximum optional assembled point position of preference degree；
The optional assembled point position for the preference degree maximum found out is denoted as N points, and N points are the best optional spelling of selectivity
It is when the pipe sheet assembling point position of front ring shield duct piece to decorate position and its；Wherein, N is positive integer and 1≤N≤16.
A kind of above-mentioned general ring pipe sheet assembling point position of subway shield tunnel construction determines method, it is characterized in that：Described in step 2
Shield Construction Method Used parameter includes attitude of shield machine parameter, shield machine jack progressive error parameter and gap of the shield tail parameter；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP is shield
Shield is relative to the horizontal departure amount of tunnel central axis in shield machine during structure tunneling construction, shield machine when CZ is Shield Construction Method Used
Middle shield relative to tunnel central axis vertical missing amount；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack stroke
Poor QSX；Wherein, QZY=QZ-QY, QZ are to the shield when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of jack on the left of machine, QY are to the shield machine right side when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of side jack；QSX=QS-QX, QS are to when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of shield machine top jack, QX are to the shield when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of machine bottom jack；
The gap of the shield tail parameter includes top gap of the shield tail DS, bottom gap of the shield tail DX, left side gap of the shield tail DZ and the right side
Side gap of the shield tail DY；
Completed in step 3 after the assembled selective evaluation for putting position may be selected, work as front ring shield according to what is drawn in step 3
The pipe sheet assembling point position of section of jurisdiction, to described when front ring shield duct piece carries out assembling construction.
The present invention has advantages below compared with prior art：
1st, method and step is simple and input cost is low, and it is convenient to realize.
2nd, method is reasonable in design, is extrapolated according to the pipe sheet assembling point potential energy of upper ring shield duct piece when front ring shield duct piece
5 assembled point positions may be selected, consider further that three selection influence indexs, calculate 5 preference degrees that assembled point position may be selected,
And using the maximum optional assembled point position of preference degree as when the assembled point position of front ring shield duct piece.
3rd, three selection influence index selections are reasonable, comprehensively, accurately consider the factor for influenceing pipe sheet assembling point position selection,
Shield duct piece in practice of construction can be effectively reduced, because of the segment damage and percolating water phenomenon of the improper appearance in pipe sheet assembling point position, to improve
It is molded tunnel quality.
4th, the weight modulus method of three selection influence indexs is simple, reasonable and realization is convenient, using effect is good, energy
Easy, directly perceived and accurate expression is carried out to the influence degree of pipe sheet assembling point position selection to three selection influence indexs.
5th, the computational methods of assembled point position preference degree are simple, reasonable in design and result of calculation is reliable, and consideration meets scene
Construction and three of pipe sheet assembling point position selection selection influence indexs are influenceed, according to the influence modes of three selection influence indexs,
And the influence degree of each selection influence index is embodied by weight, and optimal pipe sheet assembling is judged by weighted sum
Point position.
6th, consider that parameter related to general ring segment selection during actual Shield Construction Method Used (i.e. is dug by shield comprehensively
Enter construction parameter), in combination with setup parameter, and by weight analysis, pass through the quantitative section of jurisdiction for calculating current ring shield duct piece
Assembly point position, is provided for pipe sheet assembling and meet the assembled point position of live reality and instruct, practicality and workable, realization is finely
The quantitative control changed.
7th, by data processing equipment can it is easy, quickly calculate each optional assembled preference degree for putting position, taken
Between very short and amount of calculation it is small, realize it is easy, need to only input corresponding to Shield Construction Method Used parameter, setup parameter and weight coefficient
.
8th, attitude of shield machine benchmark is determined according to the datum axis of reference in shield tunneling process, to pipe sheet assembling
When point position is determined, attitude of shield machine benchmark determined by consideration, so as to which the axle of construction molding tunnel duct piece is effectively ensured
Line position, realizes Precise control, strong applicability, and identified pipe sheet assembling point position more meets live actual.
9th, complete after the assembled selective evaluation for putting position may be selected, calculate after the completion of the construction of front ring shield segment assembling
Shield machine jack travel information and gap of the shield tail information, instruct site operation, realize general endless tube piece point position selection process
Informationization, and realize the quantitative control of jack stroke and gap of the shield tail, realize the Precise control of segment selection.
10th, using effect is good and practical value is high, adapts in Practical Project in Different Strata because duct piece float upward amount is different
And the different shield driving axis taken, scene reality is bonded, it (is specifically that pipe sheet assembling point position determines to make segment selection result
With pipe sheet assembling) it is consistent with shield driving thinking, it is ensured that adaptability.Also, according to live reality, and consider three selection shadows
Snap target influence degree, and by adjusting weight coefficient, three selection influence indexs are influenceed with the pipe when front ring shield duct piece
The significance level of the assembled point position of piece is adjusted, exceed or the selection influence index of approach construction limit value (i.e. setup parameter) (
Referred to as influence factor) weight coefficient rise, realize easy, more meet live actual.
In summary, the inventive method step is simple, reasonable in design and realization is convenient, using effect is good, can be easy, quick
And accurately determine the assembled point position of general endless tube piece.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is the layout position illustration of the assembled point position of general endless tube piece 16.
Fig. 2 is the method flow block diagram of the present invention.
Embodiment
The general ring pipe sheet assembling point position of a kind of subway shield tunnel construction as shown in Figure 2 determines method, using shield machine along tunnel
Road central axis carries out Shield Construction Method Used to institute's construction tunnel from the front to the back, and Shield Construction Method Used carries out shield after completing a ring
Pipe sheet assembling is constructed；
Before any ring shield segment assembling construction, first the pipe sheet assembling point position when front ring shield duct piece is determined,
Process is as follows：
Determined Step 1: assembled point position may be selected：According to shield duct piece staggered joint erection method, and according to upper ring shield pipe
The pipe sheet assembling point position of piece, selected from 16 assembled point positions to be selected when 5 optional assembled point positions of front ring shield duct piece；
16 assembled point positions to be selected are along the circumferential direction uniformly laid and it is respectively 1 from front to back along clockwise direction
Point, 2 points ..., 16 points, refer to Fig. 1；
5 optional assembled point positions be denoted as respectively a points, b points, c points, d points and e points and its along clockwise direction by preceding
To rear arrangement；Wherein, a, b, c, d and e are positive integer, 1≤a≤16,1≤b≤16,1≤c≤16,1≤d≤16, and 1≤e≤
16；
Step 2: selection influence index and its weight coefficient determine：According to tunnel section residing for when front ring shield duct piece
Shield Construction Method Used parameter during Shield Construction Method Used is carried out, three selection influence indexs to influenceing pipe sheet assembling point position selection
It is determined respectively with the weight coefficient of three selection influence indexs；
Three selection influence indexs are respectively attitude of shield machine, shield machine jack progressive error and gap of the shield tail；
Step 3: the selective evaluation of assembled point position may be selected：Three selection shadows according to determined by step 2
Snap mark and its weight coefficient, and according to the Exchanger Efficiency with Weight Coefficient Method optional assembled selectivity minute for putting position described to 5 in step 1
Do not evaluated, and best one described optional assembly puts position as when front ring shield duct piece using the selectivity evaluated
Pipe sheet assembling point position.
Also, the tunnel central axis is the design centre axis of institute's construction tunnel.
As shown in figure 1, the angle γ in 16 assembled point positions to be selected between two neighboring assembled point position to be selected is
22.5°.In 16 assembled point positions to be selected, 16 points be located at the top, 8 points be located at positioned at bottom and 16 points with 8 points it is same
On vertical curve.
In the present embodiment, shield duct piece described in the ring in institute's construction tunnel positioned at last side is initial ring shield duct piece,
The front ring shield duct piece of working as is positioned at the initially shield duct piece described in the ring on front side of ring shield duct piece.
During practice of construction, when carrying out assembling construction to the initial ring shield duct piece, without entering to its pipe sheet assembling point position
Row determines.
When carrying out assembled point position may be selected in the present embodiment, in step 1 determining, according to shield duct piece staggered joint erection method
It is determined, this method is conventional shield segment assembling method well known to those skilled in the art, realizes easy, operability
By force.
In step 1 upper ring shield duct piece be when the adjacent upper ring shield duct piece of front ring shield duct piece and its positioned at work as
On rear side of front ring shield duct piece.Herein, the pipe sheet assembling point position of upper ring shield duct piece is denoted as NSPoint, wherein NSFor positive integer, and 1
≤NS≤16。
In the present embodiment, when optional assembled point position described to 5 is determined, process is as follows：
Step 1: a points determine：According to the pipe sheet assembling point position N of upper ring shield duct pieceSPoint, a points are determined：Work as NS
During+2 ＞ 16, a=NS+2-16；Otherwise, a=NS+2；
Step 2: b points determine：According to identified a points in step 1, b points are determined：As a+3 ＞ 16, b=a
+3-16；Otherwise, b=a+3；
Step 3: c points determine：According to identified b points in step 2, c points are determined：As b+3 ＞ 16, c=b
+3-16；Otherwise, c=b+3；
Step 4: d points determine：According to identified c points in step 3, d points are determined：As c+3 ＞ 16, d=c
+3-16；Otherwise, d=c+3；
Step 5: e points determine：According to identified d points in step 4, e points are determined：As d+3 ＞ 16, e=d
+3-16；Otherwise, e=d+3.
In the present embodiment, the weight coefficient of attitude of shield machine is denoted as described in three selection influence indexs in step 2
λZ, the weight coefficient of shield machine jack progressive error is denoted as λQ, the weight coefficient of gap of the shield tail is denoted as λD；Wherein, 0 ＜ λZ＜ 1,0
＜ λQThe ＜ λ of ＜ 1,0D＜ 1, λZ+λQ+λD=1.
Also, the maximum weight coefficient of numerical value is denoted as in the weight coefficient of three selection influence indexs in step 2
λM, λM=0.4~0.6；The minimum weight coefficient of numerical value is denoted as λ in the weight coefficient of three selection influence indexsm, λm=
0.1~0.3.
In the present embodiment, described λM=0.45~0.55, described λm=0.1~0.15.
So, the weight coefficient determination process of three selection influence indexs can significantly be simplified, only need to be to described in three
The influence degree that selection influence index influences pipe sheet assembling point position selection is from top to bottom ranked up, just can it is easy, immediately arrive at
The weight coefficient of three selection influence indexs.Wherein, the selection influence index influences the shadow of pipe sheet assembling point position selection
The degree of sound is bigger, and the weight coefficient of the selection influence index is bigger.Also, the weight of the maximum selection influence index of influence degree
Coefficient=λM, weight coefficient=λ of the minimum selection influence index of influence degreem。
In the present embodiment, when the weight coefficient of selection influence index described to three is determined in step 2, first basis
To the Shield Construction Method Used parameter when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used, and combine and set in advance
Fixed setup parameter, the influence degree of selection influence index described to three are determined respectively；The maximum selection of influence degree
Weight coefficient=λ of influence indexM, weight coefficient=λ of the minimum selection influence index of influence degreem。
The setup parameter includes attitude of shield machine deviation threshold s, jack progressive error threshold value q and gap of the shield tail permissible value
d；Wherein, s ＞ 0, q ＞ 0 and d ＞ 0.
Thus, the determination method of the weight coefficient of three selection influence indexs is simple and realizes conveniently, and result
Accurately, reliability is high.
During practice of construction, described s=10mm~100mm, q=30mm~100mm, d=5mm~55mm.
Preferably, described s=35mm~45mm, q=55mm~65mm, d=10mm~30mm.
In the present embodiment, described s=40mm, q=60mm, d=15mm., can be according to specific need during practice of construction
Will, s, q and d value size are adjusted accordingly.Wherein ,-s=-40mm ,-q=-60mm.
When being set to gap of the shield tail permissible value d, generally require that gap of the shield tail is not less than 15mm, harsh conditions
Under require that gap of the shield tail is not less than 10mm, make scope of activities 10mm~30mm of gap of the shield tail, gap of the shield tail standard value is 30mm.
During practice of construction, when carrying out Shield Construction Method Used to institute's construction tunnel using the shield machine, after the shield machine
Portion is equipped with four jack, and four jack are hydraulic jack, and four jack are laid in same vertical plane
Upper and its along the circumferential direction uniformly laying.Four jack are respectively positioned at top, bottom, the left side at the shield machine rear portion
The top jack on side and right side, bottom jack, left side jack and right side jack.Gap of the shield tail refers to shield machine shield tail
Gap between shield duct piece.
In the present embodiment, it is very heavy that Shield Construction Method Used parameter described in step 2 includes attitude of shield machine parameter, shield machine
Push up progressive error parameter and gap of the shield tail parameter；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP is shield
Shield is relative to the horizontal departure amount of tunnel central axis in shield machine during structure tunneling construction, shield machine when CZ is Shield Construction Method Used
Middle shield relative to tunnel central axis vertical missing amount；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack stroke
Poor QSX；Wherein, QZY=QZ-QY, QZ are to the shield when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of jack on the left of machine, QY are to the shield machine right side when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of side jack；QSX=QS-QX, QS are to when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of shield machine top jack, QX are to the shield when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of machine bottom jack；
The gap of the shield tail parameter includes top gap of the shield tail DS, bottom gap of the shield tail DX, left side gap of the shield tail DZ and the right side
Side gap of the shield tail DY.
Wherein, the stroke of shield machine left and right sides jack when left and right sides jack progressive error QZY is Shield Construction Method Used
Difference, the progressive error of the upper and lower both sides jack of shield machine when upper and lower sides jack progressive error QSX is Shield Construction Method Used.SP is shield
Shield (being specifically the geometric center point of that is, middle shield in the middle part of middle shield) is inclined with the level of tunnel central axis in shield machine during tunneling construction
Residual quantity, shield in shield machine (in being specifically in the middle part of shield, i.e., the geometric center point of middle shield) is relative to tunnel when CZ is Shield Construction Method Used
The vertical missing amount of road central axis, the geometric center point of middle shield are located on the central axis of shield machine.
When the influence degree of selection influence index described to three is determined, process is as follows：
Step 201, gap of the shield tail parameter judge：By the gap of the shield tail parameter middle and upper part gap of the shield tail DS, bottom shield tail
Clearance D X, left side gap of the shield tail DZ and right side gap of the shield tail DY carry out difference comparsion with gap of the shield tail permissible value d respectively：When DS,
When DX, DZ and DY are not less than d, into step 202；Otherwise, it is judged as described in three selection influence indexs between shield tail
The influence degree of gap is maximum, and the influence degree of the attitude of shield machine is minimum, and completes the shadow of three selection influence indexs
The degree of sound determination process；
Step 202, shield machine jack progressive error parameter judge：By left and right sides jack progressive error QZY and upper and lower sides thousand
Jin top progressive error QSX carries out difference comparsion with jack progressive error threshold value q respectively：When QZY and QSX is no more than q, into step
Rapid 203；Otherwise, it is judged as that the influence degree of shield machine jack progressive error described in three selection influence indexs is maximum,
The influence degree of the gap of the shield tail is minimum, and completes the influence degree determination process of three selection influence indexs；
Step 203, attitude of shield machine parameter judge：By shield machine horizontal attitude SP and shield machine perpendicular attitude CZ respectively with
Attitude of shield machine deviation threshold s carries out difference comparsion：As SP ＞ s or CZ ＞ s, it is judged as in three selection influence indexs
The influence degree of the attitude of shield machine is maximum, and the influence degree of the shield machine jack progressive error is minimum, and completes three
The influence degree determination process of the selection influence index；Otherwise, it is judged as shield described in three selection influence indexs
The influence degree of machine jack progressive error is maximum, and the influence degree of the gap of the shield tail is minimum, and completes three selection shadows
Snap target influence degree determination process.
So, according to the method described in step 201 to step 203, easy, quickly described on three influence can be selected to refer to
Target influence degree is determined, and it is convenient to realize, and the influence degree result of identified three selection influence indexs can
Lean on, it is operable strong.
In the present embodiment, three selection influence indexs for influenceing pipe sheet assembling point position selection are determined in step 2
When, three selection influence indexs of each assembled point position to be selected it need to be determined respectively in assembled point position to be selected described to 16；
Attitude of shield machine, shield machine thousand described in three selection influence indexs of n points in 16 assembled point positions to be selected
Jin top progressive error and gap of the shield tail, are denoted as Z (n), Q (n) and D (n) respectively；Wherein, n be positive integer and n=1,2 ..., 16；
When being determined to Z (n), Q (n) and D (n), shield is carried out according to tunnel section residing for when front ring shield duct piece
Shield Construction Method Used parameter during tunneling construction, and be determined with reference to setup parameter set in advance；The setup parameter bag
Include attitude of shield machine benchmark, attitude of shield machine deviation threshold s, jack progressive error threshold value q and gap of the shield tail permissible value d；
The attitude of shield machine benchmark includes shield machine horizontal attitude benchmark Sj and shield machine perpendicular attitude benchmark Cj, wherein
Sj is relative to shield in the shield machine set in advance before progress Shield Construction Method Used in tunnel section residing for front ring shield duct piece
In the horizontal departure amount of tunnel central axis, Cj be to when tunnel section residing for front ring shield duct piece carry out Shield Construction Method Used it
In preceding shield machine set in advance shield relative to tunnel central axis vertical missing amount；
When being determined to Z (n), according to formula Z (n)=Z1(n)+Z2(n) (1) is determined；
In formula (1), Z1(n) according to shield machine horizontal attitude SP, shield machine horizontal attitude benchmark Sj and attitude of shield machine
Deviation threshold s is determined：
As SP-Sj ＜-s,
As-s≤SP-Sj ＜ 0,
As 0≤SP-Sj ＜ s,
As SP-Sj >=s,
In formula (1), Z2(n) according to shield machine perpendicular attitude CZ, shield machine perpendicular attitude benchmark Cj and attitude of shield machine
Deviation threshold s is determined：
As CZ-Cj≤- s,
As-s ＜ CZ-Cj≤0,
As 0 ＜ CZ-Cj≤s,
As CZ-Cj ＞ s,
When being determined to Q (n), according to formula Q (n)=Q1(n)+Q2(n) (2) are determined；
In formula (2), Q1(n) it is determined according to left and right sides jack progressive error QZY and jack progressive error threshold value q：
As QZY ＜-q,
As-q≤QZY ＜ 0,
As 0≤QZY ＜ q,
As QZY >=q,
In formula (2), Q2(n) it is determined according to upper and lower sides jack progressive error QSX and jack progressive error threshold value q：
As QSX≤- q,
As-q ＜ QSX≤0,
As 0 ＜ QSX≤q,
As QSX ＞ q,
When being determined to D (n), according to formulaCarry out true
It is fixed；
In formula (3), D1(n) it is determined according to top gap of the shield tail DS and gap of the shield tail permissible value d：
As DS ＜ d,
As DS >=d, D1(n)=0；
In formula (3), D2(n) it is determined according to bottom gap of the shield tail DX and gap of the shield tail permissible value d：
As DX ＜ d,
As DX >=d, D2(n)=0；
In formula (3), D3(n) it is determined according to left side gap of the shield tail DZ and gap of the shield tail permissible value d：
As DZ ＜ d,
As DZ >=d, D3(n)=0；
In formula (3), D4(n) it is determined according to right side gap of the shield tail DY and gap of the shield tail permissible value d：
As DY ＜ d,
As DY >=d, D4(n)=0.
When carrying out may be selected the selective evaluation of assembled point position in the present embodiment, in step 3, process is as follows：
Step 301, assembled point position preference degree calculating may be selected：16 spellings to be selected according to determined by step 2
Three selection influence indexs of each assembled point position to be selected in position are decorateeed, and with reference to the weight system of three selection influence indexs
Number, the preference degree of optional assembled point position described to 5 in step 1 are respectively calculated；
Shield described in three selection influence indexs of m points in 5 optional assembled point positions determined by step 2
Structure machine posture, shield machine jack progressive error and gap of the shield tail, are denoted as Z (m), Q (m) and D (m) respectively；Wherein, m is positive integer
And m=a, b, c, d or e；
When the preference degree of m points calculates in optional assembled point position described to 5, according to formula H (m)=λD·D
(m)+λQ·Q(m)+λZZ (m) (5) is calculated；
In this step, the preference degree of a points, b points, c points, d points and the e points that calculate, H (a), H (b), H are denoted as respectively
(c), H (d) and H (e)；
Step 302, optional assembled point position preference degree compare：5 optional spellings to being calculated in step 301
Preference degree H (a), H (b), H (c), H (d) and the H (e) for decorateeing position are compared, and from 5 optional assembled point positions
Find out the maximum optional assembled point position of preference degree；
The optional assembled point position for the preference degree maximum found out is denoted as N points, and N points are the best optional spelling of selectivity
It is when the pipe sheet assembling point position of front ring shield duct piece to decorate position and its；Wherein, N is positive integer and 1≤N≤16.
During carrying out Shield Construction Method Used to institute's construction tunnel, to carrying out shield when tunnel section residing for front ring shield duct piece
During structure tunneling construction, generally, Shield Construction Method Used, the tunnel central axis should be carried out by the tunnel central axis
For the design centre axis of institute's construction tunnel；But during practice of construction, to overcome duct piece float upward, attitude of shield machine adjustment etc. all
Multifactor influence, it is ensured that the actual installation position of assembly shaping shield duct piece, when reality carries out Shield Construction Method Used, according to another
The datum axis of outer determination carries out Shield Construction Method Used, and the datum axis is revised Shield Construction Method Used benchmark, also referred to as
Attitude of shield machine benchmark.
Described Sj is to set in advance before tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
Shield in shield machine (in being specifically in the middle part of shield, i.e., the geometric center point of middle shield) relative to the horizontal departure amount of tunnel central axis,
Cj is (specific to shield in the shield machine set in advance before progress Shield Construction Method Used in tunnel section residing for front ring shield duct piece
It is the geometric center point of that is, middle shield in the middle part of middle shield) relative to the vertical missing amount of tunnel central axis, thus Sj is in shield machine
The level of datum axis and tunnel central axis is inclined at shield (being specifically the geometric center point of that is, middle shield in the middle part of middle shield) present position
Residual quantity, Cj are datum axis and tunnel at shield in shield machine (in being specifically in the middle part of shield, i.e., the geometric center point of middle shield) present position
The vertical missing amount of road central axis.
During practice of construction, generally, shield machine horizontal attitude benchmark Sj=0, and shield machine perpendicular attitude benchmark Cj
=0.In the present embodiment, Sj=Cj=0.
During practice of construction, to realize Precise control, it is ensured that the positional accuracy in construction molding tunnel, consider section of jurisdiction
The influences of the factor to institute's construction tunnel axis such as floating, attitude of shield machine adjustment, phase is carried out to Sj and Cj value size respectively
It should adjust, realize that easy and using effect is good, workmen can according to specific needs, to shield machine horizontal attitude benchmark Sj and shield
Structure machine perpendicular attitude benchmark Cj is adjusted accordingly.
When reality is determined to attitude of shield machine benchmark, -50mm≤Sj≤50mm, -50mm≤Cj≤50mm.For example,
Consider during influence of the duct piece float upward to institute's construction tunnel axis, it is necessary to consider that duct piece float upward amount is offset, now to need to hang down to shield machine
Straight attitude reference Cj is adjusted, because duct piece float upward is common phenomenon in shield-tunneling construction, to offset the float-amount of section of jurisdiction, by shield
Structure machine perpendicular attitude benchmark Cj be adjusted to float-amount identical negative value, it is when such as duct piece float upward amount being 30mm, shield machine is vertical
Attitude reference Cj is adjusted to -30mm.
It is actual according to engineering when reality is determined to the datum axis, deviate from shield machine shield by measuring shield duct piece
The difference between the posture after posture and shield duct piece stabilization during tail, it is determined that the displacement of abjection shield machine shield tail backing structure section of jurisdiction
Value, and according to the shift value of abjection shield machine shield tail backing structure section of jurisdiction, the datum axis of reference in shield tunneling process is carried out
It is determined that.
It is typically all the Tunnel Design line style for input in the segment array software used at present, joins with reference to tunnel segment structure
Number, fitting of the section of jurisdiction to circuit is carried out, the factor of consideration includes the basic parameter of section of jurisdiction, such as wedge-shaped amount, ring width, minimum rotation
Angle, piecemeal etc., and attitude of shield machine, jack cylinder stroke, gap of the shield tail etc..But in actual field work progress, shield
After structure pipe sheet assembling abjection shield tail, more obvious rising phenomenon often be present, in order to ensure shaping tunnel axis is controlled, now
Shield machine driving axis reference is no longer design tunnel axis (i.e. tunnel central axis), and often selects reserved Segment displacement
The line lower axis of amount is as reference.Existing segment array software should be pressed close to design tunnel by shield machine during driving and section of jurisdiction axis
The principle design of axis, the feelings that shield machine and section of jurisdiction axis have differences with design tunnel axis during actual driving are not considered
Condition, therefore typesetting result is not inconsistent actually with scene during practice of construction, accuracy rate is low, causes software to be transported in practice in engineering
It is not high with degree.And this problem can effectively be overcome using the present invention.
In the present embodiment, to realize that convenient and calculating process is simple, calculating speed is fast, result of calculation is accurate, in step 301
When may be selected assembled point position preference degree calculating, using data processing equipment to 5 in the step 1 optional assembly
The preference degree of point position is respectively calculated.
In the present embodiment, the data processing equipment is PC.During actual use, the data processing equipment can also be adopted
With palm PC, data processing chip etc..
When the preference degree of optional assembled point position described to 5 in step 1 is respectively calculated, first it need to use and institute
The data input device for stating data processing equipment connection inputs Shield Construction Method Used parameter, the setup parameter and a upper ring
The pipe sheet assembling point position of shield duct piece.Wherein, the attitude of shield machine parameter in the Shield Construction Method Used parameter, shield machine are very heavy
Top progressive error parameter and gap of the shield tail parameter are the actual measurement parameter that draws of measurement and three is actual measured value.
When being determined to shield machine jack progressive error parameter, enter according to tunnel section residing for when front ring shield duct piece
The stroke QZ of shield machine left side jack, the stroke QY of shield machine right side jack, shield machine top during row Shield Construction Method Used
The stroke QS of jack and the stroke QX of shield machine bottom jack are determined, and wherein QZ, QY, QS and QX are actual measurement
Value, because shield machine jack is hydraulic jack, thus QZ, QY, QS and QX are the oil cylinder stroke of corresponding jack.Institute
QZ, QY, QS and the QX stated be shield machine guidance panel on or shield machine tunnel operating system on show shield machine top, under
The run-length data (also referred to as oil cylinder stroke data) in portion, left side and right side jack, realizes that easy and data are accurate, reliable.
When being determined to the attitude of shield machine parameter, shield machine horizontal attitude SP and shield machine perpendicular attitude CZ are
Actual measured value and the two can directly be obtained from the driving guidance system of the shield machine, realize easy and data it is accurate,
Reliably.When being measured to SP and CZ, middle part laying measuring cell it can be measured in the middle part of the shield machine.
When being determined to the gap of the shield tail parameter, between top gap of the shield tail DS, bottom gap of the shield tail DX, left side shield tail
Gap DZ and right side gap of the shield tail DY is actual measured value, is surveyed by Field Force and obtains numerical value.Also, the gap of the shield tail ginseng
Number is the gap of the shield tail before front ring shield segment assembling.Wherein, gap of the shield tail DS in top is to when residing for front ring shield duct piece
Tunnel section carries out gap between shield machine shield tail top and upper ring shield duct piece after Shield Construction Method Used, between the shield tail of bottom
Gap DX is to shield machine shield tail bottom and a upper ring shield after tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
Gap between structure section of jurisdiction, left side gap of the shield tail DZ are to when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
Gap on the left of shield machine shield tail between upper ring shield duct piece afterwards, right side gap of the shield tail DY is to when front ring shield duct piece institute
Gap after place tunnel section progress Shield Construction Method Used on the right side of shield machine shield tail between upper ring shield duct piece.
It is easy to operate and intuitive display during practice of construction, also needs to input the ring number of upper ring shield duct piece, and upper one
The pipe sheet assembling point position of the ring number of ring shield duct piece and upper ring shield duct piece is by Field Force according to live actual acquisition.
Attitude of shield machine benchmark, attitude of shield machine deviation threshold s, jack progressive error threshold value q in the setup parameter
It is the artificial parameter set according to specific needs with gap of the shield tail permissible value d.In addition, also need to input tunnel segment structure parameter
With the weight coefficient of the predetermined three selection influence indexs, the tunnel segment structure parameter includes working as front ring shield duct piece
Width L, the wedge shape amount Δ and diameter D when front ring shield duct piece when front ring shield duct piece.In the present embodiment, institute's construction tunnel
In each ring shield duct piece tunnel segment structure parameter all same.The weight coefficient of three selection influence indexs is three institutes of judgement
State the coefficient of significance level of the selection influence index in the point position selection of section of jurisdiction.
Complete in the present embodiment, in step 3 after the assembled selective evaluation for putting position may be selected, drawn according in step 3
When the pipe sheet assembling point position of front ring shield duct piece, to described when front ring shield duct piece carries out assembling construction.
Also, applied to described when front ring shield duct piece carries out assembling construction using the shield segment assembling lining cutting of routine
Work method carries out assembling construction.After the completion of assembling construction, a section of jurisdiction ring is obtained.Per ring shield duct piece by one piece of block that binds
(i.e. K blocks), two pieces bind the adjacent block of block both sides and polylith is connected to mark between two adjacent blocks positioned at described respectively
Quasi- block is assembled, drawn in step 3 when the pipe sheet assembling point position of front ring shield duct piece is binds when in front ring shield duct piece
The position (position in the middle part of the block that specifically binds) of block.
In addition, to when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used, being dug according to the shield of routine
Enter construction method to be constructed.
Complete after the assembled selective evaluation for putting position may be selected, also needed to when front ring shield in the present embodiment, in step 3
Shield machine jack travel information and gap of the shield tail information after the completion of pipe sheet assembling construction are respectively calculated；
When front ring shield segment assembling construction after the completion of shield machine jack travel information include YGS, YGX, YGZ and
YGY；Wherein, YGS is the stroke of the shield machine top jack after the completion of the construction of front ring shield segment assembling, and YGX is to work as front ring
The stroke of shield machine bottom jack after the completion of shield segment assembling construction, YGZ are to construct to complete when front ring shield segment assembling
The stroke of shield machine left side jack afterwards, YGY are the shield machine right side jack after the completion of the construction of front ring shield segment assembling
Stroke；
Gap of the shield tail information after the completion of the construction of front ring shield segment assembling includes DWS, DWX, DWZ and DWY；Wherein,
DWS is the top gap of the shield tail after the completion of the construction of front ring shield segment assembling, and DWX is when front ring shield segment assembling has been constructed
Bottom gap of the shield tail after, DWZ are the left side gap of the shield tail after the completion of the construction of front ring shield segment assembling, and DWY is current
Right side gap of the shield tail after the completion of the construction of ring shield segment assembling.
Thus, using energy simplicity of the invention, fast and accurately calculate after the completion of the construction of front ring shield segment assembling
Shield machine jack travel information and gap of the shield tail information, according to being calculated after the completion of the construction of front ring shield segment assembling
Gap of the shield tail information, the pipe sheet assembling point position determined by step 3 when front ring shield duct piece can further be tested
Card, practicality are very strong.
Described in treating after the completion of front ring shield duct piece carries out assembling construction, spelled according to the front ring shield duct piece of working as being calculated
Shield machine jack travel information after the completion of dress construction, is controlled to shield machine jack.Then, to next ring shield pipe
Tunnel section residing for piece carries out Shield Construction Method Used；So not very repeat, until completing the shield-tunneling construction process of institute's construction tunnel.
Wherein, when calculating the shield machine jack travel information after the completion of being constructed when front ring shield segment assembling,
Described
In formula (6-1), (6-2), (6-3) and (6-4), L is when the width of front ring shield duct piece, and Δ is when front ring shield duct piece
Wedge shape amount；
It is described when calculating the gap of the shield tail information after the completion of being constructed when front ring shield segment assembling
And
In formula (7-1), (7-2), (7-3) and (7-4), L is when the width of front ring shield duct piece, and Δ is when front ring shield duct piece
Wedge shape amount, D be when the diameter (i.e. external diameter) of front ring shield duct piece, spacing or shield of the l between the jack of shield machine top and the bottom
Spacing between structure machine left and right sides jack, the wherein spacing between the jack of shield machine top and the bottom and shield machine left and right sides are very heavy
Spacing between top is identical.
To sum up, after the completion of this ring driving is completed (after completion when the Shield Construction Method Used process of front ring shield duct piece),
According to section of jurisdiction point position selection principle, respectively to 16 assembled point position assignment to be selected, considered by assignment to embody described in three
The washability (i.e. selectivity or preference degree) of each assembled point position to be selected under the influence of selection influence index.It is to be selected for any one
When assembly point position carries out assignment, it is both needed to consider the influence of three selection influence indexs, and according to each selection influence index
Influence degree carries out assignment, also protrudes or weaken the importance of corresponding selection influence index by assignment.So, treated described in 16
In the assembled point position of choosing, there are three assignment, i.e. Z in each described assembled corresponding three described selection influence index in point position to be selected
(n), Q (n) and D (n).Meanwhile in conjunction with the weight coefficient of three selection influence indexs, it just can calculate and be treated described in 16
The weighted value (i.e. preference degree) of each assembled point position to be selected in the assembled point position of choosing, the weighted value of each assembled point position to be selected is corresponding three
Three assignment (i.e. Z (n), Q (n) and D (n)) of the individual selection influence index and the weight in three selection influence indexs
Coefficient lambdaZ、λQAnd λDProduct, i.e., according to formula H (n)=λD·D(n)+λQ·Q(n)+λZZ (n) (5-1) is calculated.Root
Extrapolate when 5 optional assembled point positions of front ring shield duct piece, compare according to the pipe sheet assembling point potential energy of upper ring shield duct piece
The size of this 5 weighted values that point position may be selected, the optional assembled point position maximum using weighted value is as working as front ring shield duct piece
Assembled point position.
It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention
Any simple modification, change and the equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (9)
1. a kind of general ring pipe sheet assembling point position of shield determines method, it is characterised in that：Using shield machine along tunnel central axis
Shield Construction Method Used is carried out to institute's construction tunnel from the front to the back, progress shield segment assembling is applied after Shield Construction Method Used completes a ring
Work；
Before any ring shield segment assembling construction, first the pipe sheet assembling point position when front ring shield duct piece is determined, process
It is as follows：
Determined Step 1: assembled point position may be selected：According to shield duct piece staggered joint erection method, and according to upper ring shield duct piece
Pipe sheet assembling point position, selected from 16 assembled point positions to be selected when 5 optional assembled point positions of front ring shield duct piece；
16 assembled point positions to be selected along the circumferential direction uniformly lay and its be respectively 1 point from front to back along clockwise direction, 2
Point ..., 16 points；
5 optional assembled point positions be denoted as respectively a points, b points, c points, d points and e points and its along clockwise direction from front to back
Arrangement；Wherein, a, b, c, d and e are positive integer, 1≤a≤16,1≤b≤16,1≤c≤16,1≤d≤16,1≤e≤16；
Step 2: selection influence index and its weight coefficient determine：Carried out according to tunnel section residing for when front ring shield duct piece
Shield Construction Method Used parameter during Shield Construction Method Used, three selection influence indexs and three to influenceing pipe sheet assembling point position selection
The weight coefficient of the individual selection influence index is determined respectively；
Three selection influence indexs are respectively attitude of shield machine, shield machine jack progressive error and gap of the shield tail；
Step 3: the selective evaluation of assembled point position may be selected：Three selection influences refer to according to determined by step 2
Mark and its weight coefficient, and enter respectively according to the Exchanger Efficiency with Weight Coefficient Method optional assembled selectivity for putting position described to 5 in step 1
Row evaluation, and best one described optional assembly puts position as when the section of jurisdiction of front ring shield duct piece using the selectivity evaluated
Assembly point position；
The weight coefficient of attitude of shield machine is denoted as λ described in three selection influence indexs in step 2Z, shield machine jack
The weight coefficient of progressive error is denoted as λQ, the weight coefficient of gap of the shield tail is denoted as λD；Wherein, 0 ＜ λZThe ＜ λ of ＜ 1,0QThe ＜ λ of ＜ 1,0D＜
1, λZ+λQ+λD=1；
Shield Construction Method Used parameter described in step 2 includes attitude of shield machine parameter, shield machine jack progressive error parameter and shield
Tail gap parameter；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP digs for shield
Enter when constructing that shield is relative to the horizontal departure amount of tunnel central axis in shield machine, shield in shield machine when CZ is Shield Construction Method Used
Relative to the vertical missing amount of tunnel central axis；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack progressive error
QSX；Wherein, QZY=QZ-QY, QZ are to the shield machine when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of left side jack, QY are to the shield machine right side when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of jack；QSX=QS-QX, QS are to the shield when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of structure machine top jack, QX are to the shield machine when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of bottom jack；
The gap of the shield tail parameter includes top gap of the shield tail DS, bottom gap of the shield tail DX, left side gap of the shield tail DZ and right side shield
Tail clearance D Y；
, need to be to being treated described in 16 when being determined in step 2 to three selection influence indexs for influenceing pipe sheet assembling point position selection
Three selection influence indexs of each assembled point position to be selected are determined respectively in the assembled point position of choosing；
Attitude of shield machine, shield machine jack described in three selection influence indexs of n points in 16 assembled point positions to be selected
Progressive error and gap of the shield tail, Z (n), Q (n) and D (n) are denoted as respectively；Wherein, n be positive integer and n=1,2 ..., 16；
When being determined to Z (n), Q (n) and D (n), shield driving is carried out according to tunnel section residing for when front ring shield duct piece
Shield Construction Method Used parameter during construction, and be determined with reference to setup parameter set in advance；The setup parameter includes shield
Structure machine attitude reference, attitude of shield machine deviation threshold s, jack progressive error threshold value q and gap of the shield tail permissible value d；Wherein, s ＞
0, q ＞ 0 and d ＞ 0；
The attitude of shield machine benchmark includes shield machine horizontal attitude benchmark Sj and shield machine perpendicular attitude benchmark Cj, wherein Sj are
To shield in the shield machine set in advance before progress Shield Construction Method Used in tunnel section residing for front ring shield duct piece relative to tunnel
The horizontal departure amount of road central axis, Cj are to pre- before tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
In the shield machine first set shield relative to tunnel central axis vertical missing amount；
When being determined to Z (n), according to formula Z (n)=Z1(n)+Z2(n) (1) is determined；
In formula (1), Z1(n) according to shield machine horizontal attitude SP, shield machine horizontal attitude benchmark Sj and attitude of shield machine deviation threshold
Value s is determined：
As SP-Sj ＜-s,
As-s≤SP-Sj ＜ 0,
As 0≤SP-Sj ＜ s,
As SP-Sj >=s,
In formula (1), Z2(n) according to shield machine perpendicular attitude CZ, shield machine perpendicular attitude benchmark Cj and attitude of shield machine deviation threshold
Value s is determined：
As CZ-Cj≤- s,
As-s ＜ CZ-Cj≤0,
As 0 ＜ CZ-Cj≤s,
As CZ-Cj ＞ s,
When being determined to Q (n), according to formula Q (n)=Q1(n)+Q2(n) (2) are determined；
In formula (2), Q1(n) it is determined according to left and right sides jack progressive error QZY and jack progressive error threshold value q：
As QZY ＜-q,
As-q≤QZY ＜ 0,
As 0≤QZY ＜ q,
As QZY >=q,
In formula (2), Q2(n) it is determined according to upper and lower sides jack progressive error QSX and jack progressive error threshold value q：
As QSX≤- q,
As-q ＜ QSX≤0,
As 0 ＜ QSX≤q,
As QSX ＞ q,
When being determined to D (n), according to formula
It is determined；
In formula (3), D1(n) it is determined according to top gap of the shield tail DS and gap of the shield tail permissible value d：
As DS ＜ d,
As DS >=d, D1(n)=0；
In formula (3), D2(n) it is determined according to bottom gap of the shield tail DX and gap of the shield tail permissible value d：
As DX ＜ d,
As DX >=d, D2(n)=0；
In formula (3), D3(n) it is determined according to left side gap of the shield tail DZ and gap of the shield tail permissible value d：
As DZ ＜ d,
As DZ >=d, D3(n)=0；
In formula (3), D4(n) it is determined according to right side gap of the shield tail DY and gap of the shield tail permissible value d：
As DY ＜ d,
As DY >=d, D4(n)=0.
2. determine method according to the general ring pipe sheet assembling point position of shield described in claim 1, it is characterised in that：Institute's construction tunnel
In shield duct piece described in a ring positioned at last side be initial ring shield duct piece, it is described when front ring shield duct piece is at the beginning of described
Shield duct piece described in a ring on front side of beginning ring shield duct piece；
Completed in step 3 after the assembled selective evaluation for putting position may be selected, also need to complete to constructing when front ring shield segment assembling
Shield machine jack travel information and gap of the shield tail information afterwards is respectively calculated；
Shield machine jack travel information after the completion of the construction of front ring shield segment assembling includes YGS, YGX, YGZ and YGY；Its
In, YGS is the stroke of the shield machine top jack after the completion of the construction of front ring shield segment assembling, and YGX is when front ring shield pipe
The stroke of shield machine bottom jack after the completion of piece assembling construction, YGZ are the shield after the completion of the construction of front ring shield segment assembling
The stroke of jack on the left of machine, YGY are the stroke of the shield machine right side jack after the completion of the construction of front ring shield segment assembling；
Gap of the shield tail information after the completion of the construction of front ring shield segment assembling includes DWS, DWX, DWZ and DWY；Wherein, DWS is
Top gap of the shield tail after the completion of the construction of front ring shield segment assembling, DWX are after the completion of the construction of front ring shield segment assembling
Bottom gap of the shield tail, DWZ be when front ring shield segment assembling construction after the completion of left side gap of the shield tail, DWY be when front ring shield
Right side gap of the shield tail after the completion of the construction of structure pipe sheet assembling.
3. determine method according to the general ring pipe sheet assembling point position of shield described in claim 1 or 2, it is characterised in that：Step 2
In the weight coefficients of attitude of shield machine described in three selection influence indexs be denoted as λZ, the power of shield machine jack progressive error
Weight coefficient is denoted as λQ, the weight coefficient of gap of the shield tail is denoted as λD；Wherein, 0 ＜ λZThe ＜ λ of ＜ 1,0QThe ＜ λ of ＜ 1,0D＜ 1, λZ+λQ+λD=
1。
4. determine method according to the general ring pipe sheet assembling point position of shield described in claim 3, it is characterised in that：Three in step 2
The maximum weight coefficient of numerical value is denoted as λ in the weight coefficient of the individual selection influence indexM, λM=0.4~0.6；Three choosings
Select the weight coefficient that numerical value is minimum in the weight coefficient of influence index and be denoted as λm, λm=0.1~0.3.
5. determine method according to the general ring pipe sheet assembling point position of shield described in claim 4, it is characterised in that：It is right in step 2
When the weight coefficient of three selection influence indexs is determined, first according to entering when tunnel section residing for front ring shield duct piece
Shield Construction Method Used parameter during row Shield Construction Method Used, and setup parameter set in advance is combined, to three selection shadows
Snap target influence degree is determined respectively；Weight coefficient=λ of the maximum selection influence index of influence degreeM, influence journey
Weight coefficient=λ of the minimum selection influence index of degreem；
The setup parameter includes attitude of shield machine deviation threshold s, jack progressive error threshold value q and gap of the shield tail permissible value d；Its
In, s ＞ 0, q ＞ 0 and d ＞ 0.
6. determine method according to the general ring pipe sheet assembling point position of shield described in claim 5, it is characterised in that：Institute in step 2
Stating Shield Construction Method Used parameter includes attitude of shield machine parameter, shield machine jack progressive error parameter and gap of the shield tail parameter；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP digs for shield
Enter when constructing that shield is relative to the horizontal departure amount of tunnel central axis in shield machine, shield in shield machine when CZ is Shield Construction Method Used
Relative to the vertical missing amount of tunnel central axis；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack progressive error
QSX；
The gap of the shield tail parameter includes top gap of the shield tail DS, bottom gap of the shield tail DX, left side gap of the shield tail DZ and right side shield
Tail clearance D Y；
When the influence degree of selection influence index described to three is determined, process is as follows：
Step 201, gap of the shield tail parameter judge：By the gap of the shield tail parameter middle and upper part gap of the shield tail DS, bottom gap of the shield tail
DX, left side gap of the shield tail DZ and right side gap of the shield tail DY carry out difference comparsion with gap of the shield tail permissible value d respectively：As DS, DX, DZ
When being not less than d with DY, into step 202；Otherwise, it is judged as the shadow of gap of the shield tail described in three selection influence indexs
The degree of sound is maximum, and the influence degree of the attitude of shield machine is minimum, and completes the influence degree of three selection influence indexs
Determination process；
Step 202, shield machine jack progressive error parameter judge：By left and right sides jack progressive error QZY and upper and lower sides jack
Progressive error QSX carries out difference comparsion with jack progressive error threshold value q respectively：When QZY and QSX is no more than q, into step
203；Otherwise, it is judged as that the influence degree of shield machine jack progressive error described in three selection influence indexs is maximum, institute
It is minimum to state the influence degree of gap of the shield tail, and completes three influence degree determination process for selecting influence index；
Step 203, attitude of shield machine parameter judge：By shield machine horizontal attitude SP and shield machine perpendicular attitude CZ respectively with shield
Machine attitude misalignment threshold value s carries out difference comparsion：As SP ＞ s or CZ ＞ s, it is judged as described in three selection influence indexs
The influence degree of attitude of shield machine is maximum, and the influence degree of the shield machine jack progressive error is minimum, and completes described in three
Select the influence degree determination process of influence index；Otherwise, it is judged as shield machine thousand described in three selection influence indexs
The influence degree of jin top progressive error is maximum, and the influence degree of the gap of the shield tail is minimum, and completes three selection influences and refer to
Target influence degree determination process.
7. determine method according to the general ring pipe sheet assembling point position of shield described in claim 5, it is characterised in that：Described s=
10mm~100mm, q=30mm~100mm, d=5mm~55mm.
8. determine method according to the general ring pipe sheet assembling point position of shield described in claim 1, it is characterised in that：Enter in step 3
When the selective evaluation of assembled point position may be selected in row, process is as follows：
Step 301, assembled point position preference degree calculating may be selected：16 assembled points to be selected according to determined by step 2
Three selection influence indexs of each assembled point position to be selected in position, and with reference to the weight coefficient of three selection influence indexs, it is right
The preference degree of 5 optional assembled point positions is respectively calculated in step 1；
Shield machine described in three selection influence indexs of m points in 5 optional assembled point positions determined by step 2
Posture, shield machine jack progressive error and gap of the shield tail, are denoted as Z (m), Q (m) and D (m) respectively；Wherein, m is positive integer and m=
A, b, c, d or e；
When the preference degree of m points calculates in optional assembled point position described to 5, according to formula H (m)=λD·D(m)+
λQ·Q(m)+λZZ (m) (5) is calculated；
In this step, the preference degree of a points, b points, c points, d points and the e points that calculate, H (a), H (b), H (c), H are denoted as respectively
And H (e) (d)；
Step 302, optional assembled point position preference degree compare：To the 5 optional assembled points calculated in step 301
Preference degree H (a), H (b), H (c), H (d) and the H (e) of position are compared, and are found out from 5 optional assembled point positions
The maximum optional assembled point position of preference degree；
The optional assembled point position for the preference degree maximum found out is denoted as N points, and N points are the best optional assembled point of selectivity
Position and its be when the pipe sheet assembling point position of front ring shield duct piece；Wherein, N is positive integer and 1≤N≤16.
9. determine method according to the general ring pipe sheet assembling point position of shield described in claim 1 or 2, it is characterised in that：Step 2
Described in Shield Construction Method Used parameter include attitude of shield machine parameter, shield machine jack progressive error parameter and gap of the shield tail ginseng
Number；
The attitude of shield machine parameter includes shield machine horizontal attitude SP and shield machine perpendicular attitude CZ；Wherein, SP digs for shield
Enter when constructing that shield is relative to the horizontal departure amount of tunnel central axis in shield machine, shield in shield machine when CZ is Shield Construction Method Used
Relative to the vertical missing amount of tunnel central axis；
The shield machine jack progressive error parameter includes left and right sides jack progressive error QZY and upper and lower sides jack progressive error
QSX；Wherein, QZY=QZ-QY, QZ are to the shield machine when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of left side jack, QY are to the shield machine right side when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of jack；QSX=QS-QX, QS are to the shield when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of structure machine top jack, QX are to the shield machine when tunnel section residing for front ring shield duct piece carries out Shield Construction Method Used
The stroke of bottom jack；
The gap of the shield tail parameter includes top gap of the shield tail DS, bottom gap of the shield tail DX, left side gap of the shield tail DZ and right side shield
Tail clearance D Y；
Completed in step 3 after the assembled selective evaluation for putting position may be selected, work as front ring shield duct piece according to what is drawn in step 3
Pipe sheet assembling point position, to it is described when front ring shield duct piece carry out assembling construction.
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| CN109723463B (en) * | 2019-03-01 | 2024-03-22 | 中铁工程服务有限公司 | Selection instrument suitable for six piecemeal section of jurisdictions |
| CN110119564A (en) * | 2019-05-07 | 2019-08-13 | 中铁工程装备集团有限公司 | A kind of section of jurisdiction pre-selection method of the automatic measurement based on gap of the shield tail |
| CN110119564B (en) * | 2019-05-07 | 2022-02-15 | 中铁工程装备集团有限公司 | Segment preselection method based on automatic measurement of shield tail clearance |
| CN110135047A (en) * | 2019-05-10 | 2019-08-16 | 上海隧道工程有限公司 | Universal segment type selecting method for correcting error |
| CN110135047B (en) * | 2019-05-10 | 2023-07-25 | 上海隧道工程有限公司 | General segment selection type correction method |
| CN114075986A (en) * | 2021-03-25 | 2022-02-22 | 上海大学 | Segment splicing point position selection system and method |
| CN114075986B (en) * | 2021-03-25 | 2024-01-30 | 上海大学 | Segment assembly point position selection system and method |
| CN113107503A (en) * | 2021-04-27 | 2021-07-13 | 中铁工程装备集团有限公司 | Shield machine simultaneously adapting to two segment assembling positions |
| CN114017060A (en) * | 2021-09-18 | 2022-02-08 | 中铁十局集团第一工程有限公司 | Shield segment model selection method |
| CN114017060B (en) * | 2021-09-18 | 2024-02-09 | 中铁十局集团第一工程有限公司 | Method for selecting shield segment |
| CN114109411A (en) * | 2021-11-30 | 2022-03-01 | 中铁一局集团有限公司 | Pipe sheet assembling point position selection device in shield construction, selection method and application |
| CN114352313A (en) * | 2021-12-07 | 2022-04-15 | 上海市基础工程集团有限公司 | Simulation turntable for selecting splicing point positions of general wedge-shaped duct pieces |
| CN116049969A (en) * | 2023-04-03 | 2023-05-02 | 中国建筑第六工程局有限公司 | Method for selecting point positions of universal wedge-shaped duct pieces |
| CN116049969B (en) * | 2023-04-03 | 2023-06-20 | 中国建筑第六工程局有限公司 | Method for selecting point positions of universal wedge-shaped duct pieces |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105673041A (en) | 2016-06-15 |
| CN105673041B (en) | 2018-01-12 |
| CN107725067B (en) | 2019-01-25 |
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Effective date of registration: 20181212 Address after: 710054 North Yanta Road, Xi'an, Shaanxi Province, No. 1 Applicant after: Zhongtie No.1 Bureau Group Co., Ltd. Applicant after: China Railway First Group Urban Rail Transit Engineering Co., Ltd. Address before: 710054 North Yanta Road, Xi'an, Shaanxi Province, No. 1 Applicant before: Zhongtie No.1 Bureau Group Co., Ltd. |
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