CN106283956A - Medium-and low-speed maglev two-wire excavation location pile foundation combined type support rail beam transition section structure - Google Patents
Medium-and low-speed maglev two-wire excavation location pile foundation combined type support rail beam transition section structure Download PDFInfo
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- CN106283956A CN106283956A CN201610826230.2A CN201610826230A CN106283956A CN 106283956 A CN106283956 A CN 106283956A CN 201610826230 A CN201610826230 A CN 201610826230A CN 106283956 A CN106283956 A CN 106283956A
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- support rail
- rail beam
- pile foundation
- base plate
- armored concrete
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/006—Deep foundation of tracks
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/08—Deep or vertical foundation
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Abstract
The invention belongs to that middle low speed magnetic suspension traffic engineering is low puts Line technology field, and disclose medium-and low-speed maglev two-wire excavation location pile foundation combined type support rail beam transition section structure, including the first pile foundation carrying structure, pile foundation joist composite bearing structure, two placing of reinforcement concrete support rail beam base plates, two placing of reinforcement concrete beam-type structures, support rail beam both sides backfill filler, bridge abutment and headwall, armored concrete support rail beam base plate is accepted on the top of the first pile foundation carrying structure；Reinforced concrete beam type structure is accepted on the top of armored concrete support rail beam base plate；It is provided with first row ditch by support rail beam both sides backfill filler, described in the side in described first row ditch, is provided with the first weathering.Long-time stability of the present invention are more preferable, both met the deformation of support rail girder construction and the high request of settlement after construction, meet again the requirement of the controllability of bedding long-time stability, durability and construction quality, effectively realize magnetic suspension elevated structure and the low smoothly transition putting line transition section F rail.
Description
Technical field
The invention belongs to that middle low speed magnetic suspension traffic engineering is low puts Line technology field, more particularly, to middle low speed magnetic
Floating two-wire excavation location support rail beam transition section structure pattern.
Background technology
Middle low speed magnetic suspension track traffic belongs to a kind of novel traffic mode, and achievement in research both domestic and external is less, the whole world
Open the circuit minority especially of operation.The middle low speed magnetic suspension railway business fortune that the most only in March, 2005, Japan's construction was opened
The middle low speed magnetic suspension railway business operating line that line-the East Hillside Line and in June, 2014, Korea S opened.And the middle low speed of China
Magnetic suspension traffic only National University of Defense technology's test wire, Green City Mountain test wire, Tangshan experiment line at present, but do not put into effect
Formal circuit, and all based on elevated structure, rarely seen relevant elevated structure and the low research put in terms of line transition segment structure and
Application.
In wheel rail high speed railway, there is substantial amounts of bridge changeover portion roadbed, high-speed railway changeover portion roadbed uses mostly
Trapezium structure, have employed cement stabilized graded macabam in trapezoidal scope and fills, and have employed than the non-higher compacting of changeover portion roadbed
Requirement.During built high-speed railway operation, bridge changeover portion scope, often there is non-fragment orbit protuberance, gap, grout
Etc. disease.The reason of this disease, is owing to changeover portion roadbed remains by the earth structure of rock and soil constitution, changeover portion mostly
After roadbed is laid a railway track, still can occur necessarily to settle, there is poor (the specification permission settlement after construction of certain settlement after construction with bridge abutment
Difference is not more than 5mm), owing to high-speed railway uses seamless track steel rail, in the range of specification allows settlement after construction difference, have no effect on
Normal operation, but the diseases such as non-fragment orbit protuberance, gap, grout can be caused, need timely repair and maintenance.
The F rail of medium-and low-speed maglev traffic line is to be used fishplate bar scene to be spliced by a short rail successively, and leaves between rail
Seam, meets the ride comfort of the F rail of magnetic-levitation train even running requirement, and under rail to be leaned on, works ensures.Low put circuit location,
Under support rail beam, basis is by the earth structure of rock and soil constitution, is affected by the factor such as landform, geological conditions, and quality is the most easily-controllable
System, is easily generated differential settlement under load and various factor of natural environment effect, can occur unavoidably and elevated structure bridge bridge
The settlement after construction that platform is inconsistent, produces settlement after construction poor, and low circuit of putting occurs in that differential settlement with bridge abutment position, necessarily affects
The ride comfort of F rail, in some instances it may even be possible to cause F rail to produce the problem such as faulting of slab ends, deformation, time serious, will affect the normal fortune of maglev vehicle
Battalion.
Summary of the invention
For disadvantages described above or the Improvement requirement of prior art, the invention provides medium-and low-speed maglev two-wire excavation location stake
Base combined type support rail beam transition section structure, this structure should meet elevated structure and the low rigidity put between circuit and settle
Cross, it is ensured that magnetic suspension traffic engineering elevated structure and the low ride comfort requirement putting line transition section F rail, meet magnetic floating traffic again
Engineering is low puts the intensity of line transition section sub rail foundation, long-time stability requirement, and construction quality controllability is strong.
For achieving the above object, the invention provides the pile foundation combined type support rail beam transition of medium-and low-speed maglev two-wire excavation location
Segment structure, it is characterised in that include the first pile foundation carrying structure, pile foundation joist composite bearing structure, armored concrete support rail beam
Base plate, two placing of reinforcement concrete beam-type structures, support rail beam both sides backfill filler, abutment bridge and headwall, wherein,
Described first pile foundation carrying structure and described pile foundation joist composite bearing structure accept described armored concrete jointly
Support rail beam base plate；
Described first pile foundation carrying structure is provided with many, and every described first pile foundation carrying structure is all vertically arranged, and
And every described first pile foundation carrying structure top all accept described armored concrete support rail beam base plate, described first pile foundation is held
The top described armored concrete support rail beam base plate of embedding carrying structure just connects with it；
Reinforced concrete beam type structure described in two rows is accepted at the top of described armored concrete support rail beam base plate, and adjacent
Two save reserved expansion joint between described armored concrete support rail beam base plate；
Described pile foundation joist composite bearing structure is provided with multiple, and the two adjacent described armored concrete support rail beams of joint
Pile foundation joist composite bearing structure described in one it is respectively provided with, for supporting these two blocks of adjacent described reinforcing bars at the expansion joint of base plate
Concrete support rail beam base plate, each described pile foundation joist composite bearing structure all includes that reinforced concrete supporting beam and the second pile foundation are held
Carrying structure, and described reinforced concrete supporting beam is all accepted on the top of every described second pile foundation carrying structure, described reinforcing bar mixes
Solidifying soil joist accepts described armored concrete support rail beam base plate；
The top of described second pile foundation carrying structure embeds described reinforced concrete supporting beam and just connects with it, described reinforced concrete
Soil joist has just connect with described armored concrete support rail beam base plate or has overlapped, described armored concrete support rail beam base plate and described reinforcing bar
Concrete beam-type structural integrity pours molding thus collectively forms armored concrete support rail beam；
Described reinforced concrete supporting beam both sides are provided with for limiting described armored concrete support rail beam base plate lateral displacement
Convex gear platform；
Arranging wired weathering section described in two rows between reinforced concrete beam type structure, between described line, weathering section has
Cross fall and head fall, for current are introduced two adjacent sections armored concrete support rail beam base plate internode expansion joint and then
Current are discharged；
Described support rail beam both sides backfill filler is arranged on soft stratum, and by described support rail beam both sides backfill filler
Being provided with first row ditch, described first row ditch is provided with the first draining away from the side of described support rail beam both sides backfill filler
Slope；
Described armored concrete support rail beam base plate is positioned at described support rail beam both sides backfill filler；
The lower end of every described first pile foundation carrying structure is stretched in supporting course, with in weakness after described soft stratum
When stratum produces sedimentation, described first pile foundation carrying structure can bear negative friction, thus to concrete-steel reinforced concrete support rail beam
There is provided stable bearing capacity, in case the differential settlement of support rail beam both sides backfill filler reduces the perpendicular of armored concrete support rail beam
To, vertical and horizontal rigidity；
One end of described armored concrete support rail beam base plate is overlapped on described bridge abutment, and both are by pin even
Connect release longitudinal restraint, and limit lateral displacement；
The both sides of one end that described armored concrete support rail beam base plate is overlapped on described bridge abutment are respectively provided with described end
Wall, and the headwall of described every side backfills filler with the support rail beam both sides of respective side respectively and abuts, and protects described support rail for gear
Beam both sides backfill filler；
Being provided with second row ditch by described headwall, described second row ditch is provided with second away from the side of described headwall
Weathering.
Preferably, described first pile foundation carrying structure is cast-in-situ bored pile, and joist has just connect with support rail beam base plate or overlapped, with
Pile foundation carrying structure just connects.
Preferably, described in all these, the first pile foundation carrying structure is ranks arrangements.
Preferably, the lower end of every described second pile foundation carrying structure sequentially passes through roadbed filling, institute under described support rail beam
Stretch in supporting course after stating shallow layer reinforcement district and described soft stratum.
Preferably, described armored concrete support rail beam base plate is overlapped on one end of described bridge abutment and described bridge abutment
Between be provided with wear-resisting sliding layer.
Preferably, described pin includes pre-buried connection reinforcing bar, Colophonium hemp cut and rustless steel sleeve pipe, described pre-buried connection reinforcing bar
It is positioned at described rustless steel sleeve pipe and is fixedly installed described Colophonium hemp cut between the two.
Preferably, between described line, the cross fall of weathering section is 3%～5%, and head fall is not less than 2 ‰.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it is possible to show under acquirement
Benefit effect:
(1) the armored concrete support rail beam base plate of the present invention, reinforced concrete beam type structure all use armored concrete existing
Field one-piece casting, the two composition integral reinforced concrete structure is in order to directly take on track load and the magnetic-levitation train of track transmission
Load, then deadweight and upper load are passed to first pile foundation carrying structure rigidly connected with it, structural reliability is high.
(2) the first pile foundation carrying structure of the present invention is goed deep in supporting course, and roadbed produces when necessarily settling, and the first pile foundation is held
Carry structure still to bear negative friction and stronger bearing capacity is provided, it is to avoid cause because foundation stabilization quality is wayward
The differential settlement impact on support rail beam vertical and horizontal rigidity, structure vertical cross stiffness and structural reliability are more excellent.
(3) the first pile foundation carrying structure control effect of settling of the present invention is preferable, therefore can save cutting bedding ground and add
Gu and reduce cutting bedding replacement thickness, only need to meet the requirement of basic replacement thickness, can investment reduction, the reduction of erection time, have
Significantly technology and economic advantages.
(4) reinforced concrete supporting beam that pile foundation carrying structure and reinforced concrete floor are arranged, can be greatly reduced pile foundation
The stress concentration phenomenon of armored concrete support rail beam base plate at carrying structure；Further, since the lateral connection effect of joist, also increase
Add lateral stiffness and the ability of opposing differential settlement deformation of structure, the quantity of transverse pile foundation can have been reduced, reduce investment.
(5) two placing of reinforcement concrete beam-type structures of two-wire are combined by reinforced concrete floor simultaneously, can
To be effectively increased the lateral stiffness of reinforced concrete beam type structure, left and right two joint reinforced concrete beam type structure is made to be placed in rigidity phase
On same reinforced concrete floor, the lateral stability of reinforced concrete beam type structure can be effectively increased, control reinforced concrete
Relative settlement between soil girder structure, is also beneficial to the maintenance during operation and maintenance, and measure construction simple, easy, cost save, effect
The best.
(6) adjacent armored concrete support rail beam base plate shares pile foundation joist composite bearing structure, and at adjacent steel
Reserved expansion joint between reinforced concrete support rail beam base plate, can avoid the section of encorbelmenting by the impact failure of train load, and reduce temperature
Stress and the impact of shrinkage and creep.
(7) armored concrete support rail beam base plate is overlapped on bridge abutment near one end of elevated bridge, passes through pin
Connect, it is to avoid the sedimentation faulting of slab ends that causes because of measures of foundation treatment difference between the two, it is ensured that magnetic float F rail low put circuit with
Bridge abutment connected position will not produce faulting of slab ends, effectively realizes magnetic suspension traffic engineering elevated structure and puts line transition section F with low
The smoothly transition of rail.
Accompanying drawing explanation
Fig. 1 is the schematic longitudinal section of the present invention；
Fig. 2 is the generalized section in Fig. 1 along I-I line；
Fig. 3 is the generalized section in Fig. 1 along II-II line；
Fig. 4 is that in the present invention, armored concrete support rail beam base plate is overlapped on the floor map on bridge abutment；
Fig. 5 is pile foundation joist of the present invention and the armored concrete support rail affixed connection diagram of beam base plate.
Fig. 6 is pile foundation joist of the present invention and armored concrete support rail beam base plate is articulated and connected schematic diagram.
Fig. 7 is the cross sectional representation of pin in the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.If additionally, technical characteristic involved in each embodiment of invention described below
The conflict of not constituting each other just can be mutually combined.
With reference to Fig. 1～Fig. 7, medium-and low-speed maglev two-wire excavation location pile foundation combined type support rail beam transition section structure, including the
One pile foundation carrying structure 3, pile foundation joist composite bearing structure 90, armored concrete support rail beam base plate 2, two placing of reinforcement beams of concrete
Formula structure 1, support rail beam both sides backfill filler 4, bridge abutment 12 and headwall 13, wherein,
Described first pile foundation carrying structure 3 and described pile foundation joist composite bearing structure 90 accept described reinforced concrete jointly
Soil support rail beam base plate 2；
Described first pile foundation carrying structure 3 is provided with many, and every described first pile foundation carrying structure 3 is all vertically arranged,
And described armored concrete support rail beam base plate 2 is all accepted on the top of every described first pile foundation carrying structure 3, described first
The top of base carrying structure 3 embeds described armored concrete support rail beam base plate 2 and just connects with it；
Reinforced concrete beam type structure 1 described in two rows, and phase are accepted in the top of described armored concrete support rail beam base plate 2
Adjacent two save reserved expansion joint between described armored concrete support rail beam base plate 2；
Described pile foundation 901 joist composite bearing structure 90 is provided with the two multiple and adjacent described armored concrete of joint
Being respectively provided with pile foundation 901 joist composite bearing structure 90 described at the expansion joint of support rail beam base plate 2, for supporting, this is adjacent
Two save described armored concrete support rail beam base plate 2, and each described pile foundation 901 joist composite bearing structure 90 all includes reinforced concrete
Soil joist 901 and the second pile foundation carry structure 902, and institute is all accepted on the top of every described second pile foundation carrying structure 902
Stating reinforced concrete supporting beam 901, described reinforced concrete supporting beam 901 accepts described armored concrete support rail beam base plate 2；
The top of described second pile foundation carrying structure 902 embeds described reinforced concrete supporting beam 901 and just connects with it, described steel
Reinforced concrete joist 901 has just connect with described armored concrete support rail beam base plate 2 or has overlapped, described armored concrete support rail beam base plate
2 with described reinforced concrete beam type structure 1 formed by integrally casting molding thus collectively form armored concrete support rail beam 9；
Described reinforced concrete supporting beam 901 both sides are provided with for limiting described armored concrete support rail beam base plate 2 horizontal
The convex gear platform of displacement；
Wired weathering section is set between reinforced concrete beam type structure 1 described in two rows, weathering section tool between described line
There are cross fall and head fall, for current being introduced two adjacent sections armored concrete support rail beam base plate 2 internode expansion joint
And then current are discharged；Between described line, the cross fall of weathering section is 3%～5%, more preferably 4%, and weathering section between line
Head fall not less than 2 ‰, in order to draining.
Described support rail beam both sides backfill filler 4 is arranged on soft stratum 5, and backfills filler in described support rail beam both sides
4 other are provided with first row ditch 7, and described first row ditch 7 is provided with the away from the side of described support rail beam both sides backfill filler 4
One weathering 8；
Described armored concrete support rail beam base plate 2 is positioned at described support rail beam both sides backfill filler 4；
The lower end of every described first pile foundation carrying structure 3 through stretching in supporting course 6 after described soft stratum 5, with
When soft stratum 5 produces sedimentation, described first pile foundation carrying structure 3 can bear negative friction, thus to concrete-steel reinforced concrete
Support rail beam 9 provides stable bearing capacity, in case the differential settlement of support rail beam both sides backfill filler 4 reduces armored concrete support rail
Vertical, the vertical and horizontal rigidity of beam 9；
One end of described armored concrete support rail beam base plate 2 is overlapped on described bridge abutment 12, and both pass through pin
Follow closely 15 Connection Release longitudinal restraints, and limit lateral displacement；
The both sides of one end that described armored concrete support rail beam base plate 2 is overlapped on described bridge abutment 12 are respectively provided with described
Headwall 13, and the headwall 13 of described every side backfills filler 4 with the support rail beam both sides of respective side respectively and abuts, and protects institute for gear
State support rail beam both sides backfill filler 4；
Described headwall 13 is other is provided with second row ditch 17, and described second row ditch 17 sets away from the side of described headwall 13
It is equipped with the second weathering 18.
Further, described first pile foundation carrying structure 3 is cast-in-situ bored pile, and joist 90 has just connect with support rail beam 9 base plate 2 or taken
Connect, just connect with pile foundation carrying structure 3.Using pin 15 to overlap in the position of support rail beam internode seam, remaining position uses and just connects.
Described in all these, the first pile foundation carrying structure 3 is arranged in ranks.
Further, described armored concrete support rail beam base plate 2 is overlapped on one end of described bridge abutment 12 and described bridge
Being provided with wear-resisting sliding layer 16 between abutment 12, described pin 15 includes pre-buried connection reinforcing bar 15.1, Colophonium hemp cut 15.2 and not
Rust steel thimble 15.3, described pre-buried connection reinforcing bar 15.1 is positioned at described rustless steel sleeve pipe 15.3 and is fixedly installed between the two
Described Colophonium hemp cut 15.2.
This structural shape can effectively solve in low speed magnetic suspension traffic engineering low to put circuit tight to post-construction settlement of subgrade requirement
Lattice, engineering that replacement thickness causes greatly is huge, it is big, long in time limit to invest to take traditional cutting to excavate, and backfill filler construction
Quality is wayward, bedding long-time stability and the problem of poor durability, thus improves and low put the reliable of circuit support rail girder construction
Degree, reduces engineering risk.
Armored concrete support rail beam 9 agent structure of the present invention all uses reinforced concrete soil scene one-piece casting, reinforced concrete
Soil support rail beam 9 girder structure is in order to directly take on track load and the magnetic-levitation train load of track transmission, then will conduct oneself with dignity and top
Load passes to pile foundation rigidly connected with it carrying structure 3, and structural reliability is high.Pile foundation carrying structure 3 uses reinforced concrete
Earth boring auger hole pouring pile makes, and transverse direction and longitudinal direction is made up of multiple rows of reinforced concrete bored pile, and vertical cross stiffness is big；And pile foundation
Going deep into reliable supporting course 8, when between the certain sedimentation of embankment generation and armored concrete support rail beam 9, generation is come to nothing, pile foundation carrying is tied
Structure 3 still can bear negative friction and provide stronger bearing capacity, has stronger longitudinal, vertical and lateral stability.Two lines
Reinforced concrete beam type structure is connected by shared base plate, further increases lateral stiffness and the stability of structure.
Armored concrete support rail beam base plate 2 one end of armored concrete support rail beam 9 is overlapped on bridge abutment 12, and the two leads to
Cross pin 15 to connect, the most releasable temperature stress of pin 15, it is achieved support rail beam stretches longitudinal, laterally limits support rail beam
Displacement, improves the lateral stability of structure.One end of support rail beam overlaps with bridge abutment 12, makes low to put circuit support rail beam and bridge
The sedimentation of abutment 12 lap position is consistent, it is to avoid bridge abutment 12 and low putting produce faulting of slab ends sedimentation between circuit support rail girder construction；Low
Putting circuit armored concrete support rail beam base plate 2 other end to be embedded in and stable low put in line construction, its sedimentation puts circuit with low
Structure is consistent, due to low put line construction through basement process and after filling compacting sedimentation value be in controlled range, therefore, support rail
Sedimentation between beam two ends is at bridge abutment 12 and low puts between line construction, close to linear change, it is achieved thereby that overhead
Bridge structure and the low sedimentation transition put between line construction, it also avoid faulting of slab ends, the smooth-going of changeover portion scope F rail be effectively ensured
Property.
Wear-resisting sliding layer 16 is arranged between armored concrete support rail beam base plate 2 and bridge abutment 12, by resistance to mill sliding
The effect of layer 16, can release the rotation that support rail beam is likely to occur under the load action such as relative settlement, temperature to a certain extent
Retrain, and the dynamic stress that magnetic-levitation train is transferred to bridge abutment 12 plays cushioning effect, it also avoid support rail beam and bridge abutment
Abrasion and stress between 12 are concentrated and are caused the partial pressing of structure to destroy.
Adjacent armored concrete support rail beam base plate 2 shares pile foundation joist composite bearing structure, and at adjacent reinforcing bar
Reserved expansion joint between concrete support rail beam base plate 2, can avoid the section of encorbelmenting by the impact failure of train load, and reduce temperature should
Power and the impact of shrinkage and creep.
The reinforced concrete supporting beam 90 that pile foundation carrying structure 3 and reinforced concrete floor 2 are arranged, can be greatly reduced pile foundation
The stress concentration phenomenon of armored concrete support rail beam base plate 2 at carrying structure；Further, since the lateral connection effect of joist 90,
Too increase lateral stiffness and the ability of opposing differential settlement deformation of structure, the quantity of transverse pile foundation can be reduced, reduce and throw
Money.
The making step that the present invention is concrete is as follows:
(1) construction overhead bridge structure abutment, pours bridge abutment body concrete, abutment of constructing, and backfills abutment foundation foundation ditch；
The location of pin should be performed before abutment concreting and bury work underground；
(2) excavating cut slope side slope is to designing at road bed absolute altitude, requires that the bedding carrying out necessity changes according to design and fills out；Ground
After process completes, low after filling platform by changeover portion design requirement put under circuit support rail beam geotechnique basis, geotechnique under platform consequence beam-and-rail
Basis filling construction Tong Bu with abutment cone.According to each position wire feeding and compaction requirement when filling, changeover portion scope with
Non-changeover portion district is synchronous layered fills, and next layer fills and fills last layer after detection meets the requirements again, until armored concrete holds
At the absolute altitude of beam-and-rail base plate bottom surface；
(3) it is in subgrade cross section, vertical section direction construction drill bored concrete pile at reinforced concrete floor bottom surface absolute altitude, i.e.
First pile foundation carrying structure 3, drilled pile construction should use the construction technology little to the most filling roadbed disturbance；Reach at cast-in-situ bored pile
After desired strength, amputate pile crown, colligation concrete floor and the connection reinforcing bar with stake by code requirement；
(4) laying high-strength wearable sliding layer it is on abutment at armored concrete support rail beam with abutment overlap joint, according to design
Joint is long keeps off platform 91, armored concrete support rail beam base plate 2 and reinforced concrete beam type structure 1 merogenesis formwork erection to joist 90, convex,
Each parts concrete reaches difference form removal after design strength, and the face that backfills between reinforced concrete beam type structure is made and sloped inwardly
Weathering and by design requirement, to carry out top layer waterproof, one-time-concreting molding, carry out all kinds of built-in fitting such as pin, sleeper before pouring
Pedestal connects location and the installation of reinforcing bar, water conservancy diversion rail bearing built-in fitting etc.；
(5) constructing and low put both sides, circuit bridge abutment 12 joint headwall 13, headwall 13 uses concrete one-piece casting to execute
Work, waits headwall 13 concrete to reach form removal after design strength, then puts circuit graded broken stone top by design requirement construction is low
The backfill layer in face, confining bed, associated satellite structures, by design and construction bridge abutment 12 cone end face confining bed etc., limit of constructing
Slope protection, drainage system etc..
(6) carry out low circuit and the elevated structure section of track put to lay and the installation of associated satellite engineering and construction, construct complete
After.
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention, not in order to
Limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, all should comprise
Within protection scope of the present invention.
Claims (8)
1. medium-and low-speed maglev two-wire excavation location pile foundation combined type support rail beam transition section structure, it is characterised in that include first
Base carrying structure, pile foundation joist composite bearing structure, armored concrete support rail beam base plate, two placing of reinforcement concrete beam-type structures,
Support rail beam both sides backfill filler, bridge abutment and headwall, wherein,
Described first pile foundation carrying structure and described pile foundation joist composite bearing structure accept described armored concrete support rail jointly
Beam base plate；
Described first pile foundation carrying structure is provided with many, and every described first pile foundation carrying structure is all vertically arranged, and often
Described armored concrete support rail beam base plate, described first pile foundation carrying knot are all accepted in the top of the first pile foundation carrying structure described in root
The top of structure embeds described armored concrete support rail beam base plate and just connects with it；
Reinforced concrete beam type structure described in two rows, and two adjacent sections are accepted in the top of described armored concrete support rail beam base plate
Between described armored concrete support rail beam base plate, expansion joint is set；
Described pile foundation joist composite bearing structure is provided with multiple, and two pieces of adjacent described armored concrete support rail beam base plates
Expansion joint at be respectively provided with pile foundation joist composite bearing structure described in, for supporting this adjacent two described reinforced concretes of joint
Soil support rail beam base plate, each described pile foundation joist composite bearing structure all includes reinforced concrete supporting beam and the second pile foundation carrying knot
Structure, and every described second pile foundation carrying structure top all accept described reinforced concrete supporting beam, described armored concrete
Joist accepts described armored concrete support rail beam base plate；
The top of described second pile foundation carrying structure embeds described reinforced concrete supporting beam and just connects with it, described armored concrete torr
Beam has just connect with described armored concrete support rail beam base plate or has overlapped, described armored concrete support rail beam base plate and described reinforced concrete
Soil girder structure formed by integrally casting molding thus collectively form armored concrete support rail beam；
Described reinforced concrete supporting beam both sides are provided with for limiting the convex of described armored concrete support rail beam base plate lateral displacement
Type gear platform；
Arranging wired weathering section described in two rows between reinforced concrete beam type structure, between described line, weathering section has laterally
The gradient and head fall, for current introducing two adjacent sections armored concrete support rail beam base plate internode expansion joint and then by water
Stream is discharged；
Described support rail beam both sides backfill filler is arranged on soft stratum, and in the other setting of backfill filler of described support rail beam both sides
Having first row ditch, described first row ditch is provided with the first weathering away from the side of described support rail beam both sides backfill filler；
Described armored concrete support rail beam base plate is positioned at described support rail beam both sides backfill filler；
The lower end of every described first pile foundation carrying structure is stretched in supporting course, with at soft stratum after described soft stratum
When producing sedimentation, described first pile foundation carrying structure can bear negative friction, thus provides to concrete-steel reinforced concrete support rail beam
Stable bearing capacity, in case the differential settlement of support rail beam both sides backfill filler reduces the vertical, vertical of armored concrete support rail beam
To and lateral stiffness；
One end of described armored concrete support rail beam base plate is overlapped on described bridge abutment, and both are released by pin connection
Put longitudinal restraint, and limit lateral displacement；
The both sides of one end that described armored concrete support rail beam base plate is overlapped on described bridge abutment are respectively provided with described headwall, and
And the headwall of described every side backfills filler with the support rail beam both sides of respective side respectively and abuts, protect described support rail beam both sides for gear
Backfill filler；
Being provided with second row ditch by described headwall, described second row ditch is provided with the second draining away from the side of described headwall
Slope.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation combined type support rail beam transition section structure, its
Being characterised by, described first pile foundation carrying structure is cast-in-situ bored pile, and joist has just connect with support rail beam base plate or overlapped, and holds with pile foundation
Carry structure just to connect.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation combined type support rail beam transition section structure, its
Being characterised by, position joist and support rail beam base plate at support rail beam internode seam use pin overlap joint, and remaining position uses and just connects.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation combined type support rail beam transition section structure, its
Being characterised by, described in all these, the first pile foundation carrying structure is ranks arrangements.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation combined type support rail beam transition section structure, its
Being characterised by, the lower end of every described second pile foundation carrying structure sequentially passes through roadbed filling, described shallow-layer under described support rail beam
Stretch in supporting course behind stabilization zone and described soft stratum.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation combined type support rail beam transition section structure, its
Being characterised by, between described line, the cross fall of weathering section is 3%～5%, and head fall is not less than 2 ‰.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation combined type support rail beam transition section structure, its
Being characterised by, described armored concrete support rail beam base plate is overlapped between one end of described bridge abutment and described bridge abutment and sets
It is equipped with wear-resisting sliding layer.
Medium-and low-speed maglev two-wire excavation location the most according to claim 1 pile foundation combined type support rail beam transition section structure, its
Being characterised by, described pin includes that pre-buried connection reinforcing bar, Colophonium hemp cut and rustless steel sleeve pipe, described pre-buried connection reinforcing bar are positioned at institute
State in rustless steel sleeve pipe and be fixedly installed described Colophonium hemp cut between the two.
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| CN201610826230.2A CN106283956B (en) | 2016-09-15 | 2016-09-15 | Medium-and low-speed maglev two-wire excavation location pile foundation combined type support rail beam transition section structure |
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Cited By (1)
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| CN106283956B (en) | 2017-11-14 |
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