CN109519179A - Special-shaped well shield launching construction method - Google Patents
Special-shaped well shield launching construction method Download PDFInfo
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- CN109519179A CN109519179A CN201811267788.7A CN201811267788A CN109519179A CN 109519179 A CN109519179 A CN 109519179A CN 201811267788 A CN201811267788 A CN 201811267788A CN 109519179 A CN109519179 A CN 109519179A
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- originating station
- originating
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- reaction frame
- shield
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- 238000010276 construction Methods 0.000 title claims abstract description 44
- 238000009434 installation Methods 0.000 claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims description 89
- 239000010959 steel Substances 0.000 claims description 89
- 230000002787 reinforcement Effects 0.000 claims description 46
- 238000003466 welding Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000009415 formwork Methods 0.000 claims description 8
- 239000004567 concrete Substances 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 210000002435 tendon Anatomy 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 4
- 238000000465 moulding Methods 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- E21D9/0621—Shield advancing devices
-
- 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
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention provides a kind of special-shaped well shield launching construction method, include: S1) pour the first originating station and the second originating station, reaction frame mounting groove is set, first originating station and the second originating station respectively include two unilateral originating stations of asymmetric tunnel axis setting, and each unilateral side originating station has horizontal mounting surface and installation inclined-plane；S2) asymmetric tunnel axis installs two and parallel originates guide rail on the installation inclined-plane of the first originating station and the second originating station；S3 shield machine) is assembled in special-shaped well and is installed in shield machine originates on guide rail far from the one end for originating portal；S4) reaction frame is fixed in reaction frame mounting groove；S5) asymmetric tunnel axis installs multiple shield bodies and moves pier on the horizontal mounting surface of the first originating station and the second originating station；S6 it) is moved in shield body and fixes thrustor between pier and shield machine；S7) push shield machine mobile by thrustor；S8 it) abolishes and originates portal.Structural stability and rigidity are more preferable and the manufacturing cycle is short, low in cost for originating in this method.
Description
Technical field
The present invention relates to technical field of tunnel construction, and in particular, to a kind of abnormal shape well shield launching construction method.
Background technique
In the shield-tunneling construction in tunnel, the shield launching of the prior art uses double reaction frame bracing members frame structures and originates
Bracket originates structure to realize shield launching, specifically, the bracket that originates of steel construction is set up between starting well and headwall, will
The shield body of shield machine, which is erected at, to be originated on bracket, then positioned at the position installation of the shield body tail portion of shield machine on the ground of starting well
Double reaction frames install 12 horizontally-supported steel pipes between construction surface to be excavated and double reaction frames simultaneously, larger in some sizes
Special-shaped well in, it may appear that shield launching hoisting port apart from headwall too far, or by starting well in conventional launching shaft
Size limits and can not place to originate bracket or reaction frame and actually originate and lack in construction and originate bracket or reaction frame ontology,
Originate construction according to traditional at this time, can will originate construction process become it is more complicated, and originate structure stability and
Rigidity can all be deteriorated, and bring very big risk to construction is originated.
Summary of the invention
The object of the present invention is to provide a kind of special-shaped well shield launching construction methods, are able to solve the shield in special-shaped well and begin
Send out hoisting port apart from headwall too far or in conventional launching shaft by starting well size limited and can not place originate bracket or
Reaction frame and actually originating lacks in construction originate bracket or reaction frame ontology caused by the problem of originating poor structure rigidity.
To achieve the goals above, the embodiment of the present invention provides a kind of special-shaped well shield launching construction method, the construction
Method includes: S1) according to surveying and locating as a result, originating opposite direction along shield machine from originating portal in the shaft bottom of the special-shaped well
Successively pour identical first originating station of height and the second originating station, and first originating station and second originating station it
Between in the reaction frame mounting groove for originating negative side and setting up the first width, wherein first originating station and described the
Two originating stations respectively include two unilateral originating stations of asymmetric tunnel axis setting, each unilateral side originating station have horizontal mounting surface and
There is the installation inclined-plane of the first angle, the installation of the unilateral originating station of two of asymmetric tunnel axis setting with the horizontal mounting surface
Inclined-plane is oppositely arranged；S2) asymmetric tunnel axis is installed on the installation inclined-plane of first originating station and second originating station
Two parallel to originate guide rail, so that each originates the peace that guide rail straddles first originating station and second originating station
It fills on inclined-plane；S3 shield machine assembling) is carried out in the special-shaped well, the shield body for completing the shield machine of assembling is installed in the beginning
Far from described one end for originating portal on hair guide rail；S4) reaction frame is installed in the reaction frame mounting groove and with described
One originating station and second originating station are fixed；S5 it) is originated at described two described in outer lateral edge two of guide rail and originates guide rail
Extending direction asymmetric tunnel axis on the horizontal mounting surface of first originating station and second originating station installs multiple shields
Body moves pier；S6 it) moves in two symmetrical shield bodies nearest away from the shield machine and is fixed respectively between pier and the shield machine
Shield machine movable pushing device；S7 shield machine movement) is pushed by the thrustor, and in the cutterhead end face of the shield machine
Away from the portal that originates up to stopping after designated length pushing, it is moved to along originator during promotion when the shield machine described
When the shield tail of the shield body of shield machine is more than the reaction frame, the assembled negative endless tube piece between the shield tail and the reaction frame；S8)
Portal is originated described in abolishing, the shield machine driving completes shield launching.
Further, step S1) according to surveying and locating as a result, in the shaft bottom of the special-shaped well from originating portal along shield
The opposite direction that originates of machine successively pours identical first originating station of height and the second originating station, comprising: according to surveying and locating result
Determine the profile size and reaction frame mounting groove of each unilateral originating station of first originating station and second originating station
Position；Setting-out goes out multiple bar planting points in the profile of each unilateral originating station, bar planting and holds on multiple bar planting points
Row reinforcing bar is bound to form the framework of steel reinforcement of each unilateral originating station, and the framework of steel reinforcement of each unilateral originating station has
Skeleton horizontal plane and the skeleton inclined-plane with the skeleton horizontal plane with the first angle；Negative side is originated according to surveying and locating result edge
It is respectively welded on the skeleton inclined-plane and skeleton horizontal plane of the framework of steel reinforcement of each unilateral originating station to according to preset space length
Muti-piece support steel plate；It welds in the reaction frame mounting groove and is connect with the end of the framework of steel reinforcement of each unilateral originating station
Fixing steel plate；According to surveying and locating result the framework of steel reinforcement of each unilateral originating station of second originating station framework water
Supporting steel plate is welded in the position of the first spacing of reaction frame mounting groove described in distance in plane；It is bonded each unilateral originating station
The profile of framework of steel reinforcement installs formwork for placing and pours chamber to be formed；Intracavitary injection concrete is poured to described to form described first
Originating station and second originating station；First originating station and second originating station that pour are conserved.
Preferably, first angle is between 15 ° -30 °.
Further, step S2) on the installation inclined-plane of first originating station and second originating station symmetrical tunnel
Road axis install two it is parallel originate guide rail so that each originates guide rail and straddles first originating station and described second
On the installation inclined-plane of originating station, comprising: originate the every of guide rail and first originating station and second originating station for each
Support steel plate welding described in muti-piece on the skeleton inclined-plane of the framework of steel reinforcement of the one unilateral originating station.
Further, step S4) in by reaction frame be installed in the reaction frame mounting groove and with first originating station
It is fixed with second originating station, comprising: the reaction frame is lifted into reaction frame mounting groove；By two of the reaction frame
Column towards first originating station one side respectively with the reinforcing bar of each unilateral originating station of corresponding first originating station
The fixing steel plate that the end of skeleton is welded is fixed, by the two root posts of the reaction frame towards the one side of second originating station
The fixing steel plate welded respectively with the end of the framework of steel reinforcement of each unilateral originating station of corresponding second originating station is solid
It is fixed；Support on the skeleton horizontal plane of the reaction frame and the framework of steel reinforcement of each unilateral originating station of second originating station
Multiple support diagonal braces are welded between steel plate.
Further, the step S5) on the horizontal mounting surface of first originating station and second originating station
Asymmetric tunnel axis installs multiple shield bodies and moves pier, comprising: multiple shield bodies are moved to the steel of pier and each unilateral originating station
Muti-piece support steel plate on the skeleton horizontal plane of tendons skeleton corresponds welding.
Further, step S6) described in thrustor be separated type hydraulic jack.
Further, the step S8) in abolish originate portal include: the shield machine cutterhead and described originate hole
Scaffold is set up between door；Strip the reinforcing bar in the structural wall originated where portal.
Abnormal shape well shield launching construction method provided by the invention pours the first originating station and the using in special-shaped well shaft bottom
Two originating stations and on first originating station and second originating station installation originate track originate structure instead of existing skill
Bracket is originated in art, by pouring so that first originating station and second originating station are integrally formed with special-shaped well, the beginning
It sends out structural strength and rigidity is more preferable, and compared with originating bracket, this is originated, and the structure manufacturing cycle is short, cost is cheaper；At this
It invents in the construction method provided, a reaction frame is used only, the reaction frame is lifted into first originating station and described
By the reaction frame and first originating station and second originating station after in reaction frame mounting groove between second originating station
Fixation forms float Structure respectively, greatly improves the stability and rigidity of the reaction frame, and complete using this construction method
After shield launching operation, it is omitted and removes extra reaction frame, originates the step of structure hoisting goes out well head, effectively save
The construction cost of post-processing, the construction period for shortening tunnel.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Fig. 1 is the flow chart for the special-shaped well shield launching construction method step that embodiment of the present invention provides.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually needle
For direction shown in the drawings either for it is vertical, on vertical or gravity direction for each component mutual alignment relation
Word is described.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 1 is the flow chart for the special-shaped well shield launching construction method step that embodiment of the present invention provides.The present invention mentions
The special-shaped well shield launching construction method supplied includes: S1) according to surveying and locating as a result, in the shaft bottom of the special-shaped well from originating hole
Door successively pours identical first originating station of height and the second originating station along the opposite direction that originates of shield machine, and begins described first
In the vertical reaction frame mounting groove for originating negative side and setting up the first width between hair platform and second originating station, wherein
First originating station and second originating station respectively include two unilateral originating stations of asymmetric tunnel axis setting, each unilateral side
Originating station has the installation inclined-plane of the first angle, the setting of asymmetric tunnel axis with horizontal mounting surface and with the horizontal mounting surface
The installation inclined-planes of two unilateral originating stations be oppositely arranged；S2) in the installation of first originating station and second originating station
On inclined-plane asymmetric tunnel axis install two it is parallel originate guide rail so that each originates guide rail and straddles described first and originate
On the installation inclined-plane of platform and second originating station；S3 shield machine assembling) is carried out in the special-shaped well, the shield of assembling will be completed
The shield body of structure machine is installed in described originate on guide rail far from described one end for originating portal；S4) reaction frame is installed in described anti-
It is fixed in power frame mounting groove and with first originating station and second originating station；S5 the outer of guide rail) is originated at described two
The extending direction of guide rail is originated described in lateral edge two on the horizontal mounting surface of first originating station and second originating station
Asymmetric tunnel axis installs multiple shield bodies and moves pier；S6) the two symmetrical shield bodies nearest away from the shield machine move pier and
Shield machine movable pushing device is fixed between the shield machine respectively；S7) push shield machine mobile by the thrustor, and
In the cutterhead end face of the shield machine away from the portal that originates up to stopping promotion after designated length, when the shield during promotion
When the shield tail for the shield body that machine is moved to the shield machine along originator is more than the reaction frame, in the shield tail and the counter-force
Assembled negative endless tube piece between frame；S8 portal is originated described in) abolishing, the shield machine driving completes shield launching.
Abnormal shape well shield launching construction method provided by the invention pours the first originating station and the using in special-shaped well shaft bottom
Two originating stations, first originating station and second originating station poured is integrally formed with the special-shaped well, described first
Installation originates guide rail formation and originates structure instead of in the prior art on the installation inclined-plane of originating station and second originating station
Originate bracket, with the prior art originate bracket compared with, it is provided by the invention to originate structural strength and rigidity is more preferable, be convenient for simultaneously
Construction manufacture；A reaction frame is used only in construction method provided by the invention, the reaction frame is mounted on described first and originates
After vertically originating in reaction frame mounting groove on opposite direction between platform and second originating station with first originating station and
Second originating station is fixedly connected, so that the installation of the reaction frame is more firm；Movement of the shield machine before driving
It moves the thrustor between pier by being mounted on the shield machine and shield body and realizes, the thrustor is every to push the shield
After machine moves a certain distance, remove the thrustor and the shield body move connection between pier, by the thrustor with
The shield body moves the adjacent next shield body of pier and moves pier connection, pushes the shield machine mobile again, until the shield machine
The cutterhead end face of shield machine is moved to originate portal away from described and stop pushing (normally, up to the thrustor after designated length
The designated length is the width of a piece of negative endless tube piece), when the shield tail of the shield body of the shield machine is more than described during promotion
When reaction frame, assembled negative endless tube piece, starts in the cutterhead of the shield machine between the reaction frame and the shield tail of the shield body
When cutting off the soil body originated on portal abolished, shield launching terminates.
Further, step S1) according to surveying and locating as a result, in the shaft bottom of the special-shaped well from originating portal along shield
The opposite direction that originates of machine successively pours identical first originating station of height and the second originating station, comprising: according to surveying and locating result
Determine the profile size and reaction frame mounting groove of each unilateral originating station of first originating station and second originating station
Position；Setting-out goes out multiple bar planting points in the profile of each unilateral originating station, bar planting and holds on multiple bar planting points
Row reinforcing bar is bound to form the framework of steel reinforcement of each unilateral originating station, and the framework of steel reinforcement of each unilateral originating station has
Skeleton horizontal plane and the skeleton inclined-plane with the skeleton horizontal plane with the first angle；Negative side is originated according to surveying and locating result edge
It is respectively welded on the skeleton inclined-plane and skeleton horizontal plane of the framework of steel reinforcement of each unilateral originating station to according to preset space length
Muti-piece support steel plate；It welds in the reaction frame mounting groove and is connect with the end of the framework of steel reinforcement of each unilateral originating station
Fixing steel plate；According to surveying and locating result the framework of steel reinforcement of each unilateral originating station of second originating station framework water
Supporting steel plate is welded in the position of the first spacing of reaction frame mounting groove described in distance in plane；It is bonded each unilateral originating station
The profile of framework of steel reinforcement installs formwork for placing and pours chamber to be formed；Intracavitary injection concrete is poured to described to form described first
Originating station and second originating station；First originating station and second originating station that pour are conserved.
In one embodiment, it completes on multiple bar planting points bar planting and to execute reinforcing bar binding each described to be formed
After the framework of steel reinforcement of unilateral originating station, in design reinforcement, the protective layer of general framework of steel reinforcement structure is 7cm, is originated first
The boundary of platform and the second originating station shoots off protective layer and forms stirrup muscle, main reinforcement and distributing reinforcement after determining, in view of the first originating station and
The main stress surface of second originating station is installation inclined-plane, the framework of steel reinforcement of each unilateral originating station after completing concreting
Skeleton inclined-plane forms installation inclined-plane, twice main reinforcement is arranged at support steel plate on each skeleton inclined-plane, in distributing reinforcement and stirrup muscle
Between add construction muscle and the support of built-in fitting angle steel to reinforce the integral strength and rigidity of the framework of steel reinforcement of each unilateral originating station；?
Reaction frame mounting groove described in distance the on the skeleton horizontal plane of the framework of steel reinforcement of each unilateral originating station of second originating station
Supporting steel plate is welded in the position of one spacing, and the supporting steel plate can be selected plurality of steel plates and be spliced to form, and originates portal certainly along shield
The opposite direction that originates of machine is successively laid with the plurality of steel plates and by each unilateral side of the plurality of steel plates and second originating station
The framework of steel reinforcement of originating station welds；The installation site that formwork for placing is determined according to surveying and locating result, after installing formwork for placing,
Repetition measurement is carried out to the formwork for placing of fitting skeleton inclined-plane installation, it is ensured that longitudinal straightness and skeleton inclined-plane and skeleton on skeleton inclined-plane
First angle of horizontal plane, formwork for placing is using longitudinal main stupefied and vertical stupefied set-up mode, and using butterfly buckle and right
Wire drawing thick stick and the mode of stirrup muscle welding tense each formwork for placing；Intracavitary injection concrete is poured to described to form described
One originating station and second originating station, specifically, using with backfill the same concretes of special-shaped shaft bottom plate sink structures into
Row pours, it is ensured that the later period without processing, pours using casting of concrete in mass mode, primary concreting molding, pour in it is tight
Lattice control the pouring molding effect on installation inclined-plane, it is ensured that and it is consistent with design, when pouring construction, it is ensured that concrete vibrating is uniform.
Preferably, first angle is between 15 ° -30 °.Specifically, the selection of first angle is according to Specific construction
Used in the gauge size of shield machine determine, for example, being more highly preferred to when the shield body diameter of shield machine is 6410mm
Ground, first angle are 27 °.
Further, step S2) on the installation inclined-plane of first originating station and second originating station symmetrical tunnel
Road axis install two it is parallel originate guide rail so that each originates guide rail and straddles first originating station and described second
On the installation inclined-plane of originating station, comprising: originate the every of guide rail and first originating station and second originating station for each
Support steel plate welding described in muti-piece on the skeleton inclined-plane of the framework of steel reinforcement of the one unilateral originating station.Described first is straddled to begin
Each on the installation inclined-plane of hair platform and second originating station originate guide rail using with first originating station and described the
The mode of muti-piece support steel plate welding on the skeleton inclined-plane of the framework of steel reinforcement of each unilateral originating station of two originating stations is fixed on
On the installation inclined-plane of first originating station and second originating station, this fixed form facilitates easy to operate and secured.
Further, step S4) in by reaction frame be installed in the reaction frame mounting groove and with first originating station
It is fixed with second originating station, comprising: the reaction frame is lifted into reaction frame mounting groove；By two of the reaction frame
Column towards first originating station one side respectively with the reinforcing bar of each unilateral originating station of corresponding first originating station
The fixing steel plate that the end of skeleton is welded is fixed, by the two root posts of the reaction frame towards the one side of second originating station
The fixing steel plate welded respectively with the end of the framework of steel reinforcement of each unilateral originating station of corresponding second originating station is solid
It is fixed；Support on the skeleton horizontal plane of the reaction frame and the framework of steel reinforcement of each unilateral originating station of second originating station
Multiple support diagonal braces are welded between steel plate.
In one embodiment, the width of the reaction frame mounting groove is 1.2m, and the two root posts of the reaction frame are in institute
The size for stating reaction frame installation slot width direction is 0.6m, after the reaction frame is lifted into the reaction frame mounting groove, institute
The column for stating reaction frame cannot simultaneously with each unilateral originating station of first originating station and second originating station reinforcing bar
The fixing steel plate that the end of skeleton is welded is fixed, therefore in the column of the reaction frame and the first originating station or the second originating station
After fixation, I-steel is placed between the column and the first originating station or the second originating station of the reaction frame, it is preferable that will be described
The fixing steel plate that the end of the framework of steel reinforcement of each unilateral originating station of the column of reaction frame and second originating station is welded
Welding, later in the end institute of the column of the reaction frame and the framework of steel reinforcement of each unilateral originating station of first originating station
Gap merging I-steel (for example, merging 20b I-steel) between the fixing steel plate of welding, by the I-steel and the counter-force
The fixing steel plate that the end of the framework of steel reinforcement of each unilateral originating station of the column of frame and first originating station is welded is simultaneously
Welding forms float Structure, prevents the reaction frame from the situation of bottom floating can occur after stress is excessive, in preliminary fixed institute
After stating reaction frame, in order to reinforce the rigidity of the reaction frame, usually in the column of the reaction frame and second originating station
At least two support diagonal brace of welding is between supporting steel plate on the skeleton horizontal plane of the framework of steel reinforcement of each unilateral side originating station to add
Gu the reaction frame, seamless steel pipe is can be selected in the support diagonal brace, for example, selecting the seamless steel pipe of diameter 609mm, wall thickness 16mm
As support diagonal brace, formed between the support diagonal brace and the column and second originating station longitudinal triangle stablize by
Power structure enhances the reaction frame structure.
Further, the step S5) on the horizontal mounting surface of first originating station and second originating station
Asymmetric tunnel axis installs multiple shield bodies and moves pier, comprising: multiple shield bodies are moved to the steel of pier and each unilateral originating station
Muti-piece support steel plate on the skeleton horizontal plane of tendons skeleton corresponds welding.
Multiple shield bodies move pier and pass through the skeleton horizontal plane of the framework of steel reinforcement with each unilateral originating station
On muti-piece support steel plate welding mode be fixed on first originating station and second originating station, can be filled in pushing tow
Make shield body move pier when setting promotion shield machine movement firm, and enough driving reaction forces can be generated, shield machine is moved
It is dynamic.
Further, step S6) described in thrustor be separated type hydraulic jack.
In one embodiment, multiple counter-forces usually are welded close to the position of horizontal plane on the surface of the shield body of shield machine
Pier moves in counter-force pier and shield body and is equipped with separated type hydraulic jack between pier, separated type hydraulic jack one end and shield body
It moves the fixed other end of pier and counter-force pier is fixed to push shield machine mobile, for example, the separated type hydraulic jack is 100
Ton separated type hydraulic jack.
Further, the step S8) in abolish originate portal include: the shield machine cutterhead and described originate hole
Scaffold is set up between door；Strip the reinforcing bar in the structural wall originated where portal.
In one embodiment, scaffold is set up between portal in the cutterhead of the shield machine and described originate, divide two layers
It abolishes and originates portal, first layer is abolished to carry out from the bottom to top, abolishes with a thickness of 20cm, originates the outer reinforcement of portal to strip and is
Purpose, three people carry out abolishing operation simultaneously by the way of first intermediate and then both sides；It is the base abolished in first layer that the second layer, which is abolished,
It carries out, using from top to bottom carrying out, abolishes with a thickness of 30cm, the glass in the final ground-connecting-wall retained where originating portal on plinth
20cm thickness including fiber bar uses the cutterhead rotary grinding ground-connecting-wall of shield machine later, shield machine when being ground ground-connecting-wall
Cutterhead revolving speed is 1.2 revs/min, and moment of torsion control prevents safe axle fracture in 4300KNm, is executed while being ground ground-connecting-wall
Foam jet operation is for the cutterhead of shield machine lubrication and depositing dust of constructing.
Abnormal shape well shield launching construction method provided by the invention pours the first originating station and the using in special-shaped well shaft bottom
Two originating stations and on first originating station and second originating station installation originate track originate structure instead of existing skill
Bracket is originated in art, by pouring so that first originating station and second originating station are integrally formed with special-shaped well, the beginning
It sends out structural strength and rigidity is more preferable, and compared with originating bracket, this is originated, and the structure manufacturing cycle is short, cost is cheaper；At this
It invents in the construction method provided, a reaction frame is used only, the reaction frame is lifted into first originating station and described
By the reaction frame and first originating station and second originating station after in reaction frame mounting groove between second originating station
Fixation forms float Structure respectively, greatly improves the stability and rigidity of the reaction frame, and complete using this construction method
After shield launching operation, it is omitted and removes extra reaction frame, originates the step of structure hoisting goes out well head, effectively save
The construction cost of post-processing, the construction period for shortening tunnel.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (8)
1. a kind of abnormal shape well shield launching construction method, which is characterized in that the construction method includes:
S1) according to surveying and locating as a result, originating portal originates opposite direction successively along shield machine certainly in the shaft bottom of the special-shaped well
Pour identical first originating station of height and the second originating station, and between first originating station and second originating station
The reaction frame mounting groove that negative side sets up the first width is originated described in vertical, wherein first originating station and described second begins
Hair platform respectively includes two unilateral originating stations of asymmetric tunnel axis setting, each unilateral side originating station have horizontal mounting surface and with institute
State the installation inclined-plane that horizontal mounting surface has the first angle, the installation inclined-plane of the unilateral originating station of two of asymmetric tunnel axis setting
It is oppositely arranged；
S2) on the installation inclined-plane of first originating station and second originating station asymmetric tunnel axis install two it is parallel
Guide rail is originated, so that each originates guide rail and straddle on the installation inclined-plane of first originating station and second originating station；
S3 shield machine assembling) is carried out in the special-shaped well, the shield body for completing the shield machine of assembling is installed in described originate and is led
Far from described one end for originating portal on rail；
S4) reaction frame is installed in the reaction frame mounting groove and is consolidated with first originating station and second originating station
It is fixed；
S5) originated at described two originated described in outer lateral edge two of guide rail the extending direction of guide rail in first originating station and
Asymmetric tunnel axis installs multiple shield bodies and moves pier on the horizontal mounting surface of second originating station；
S6 it) is moved in two symmetrical shield bodies nearest away from the shield machine and fixes shield machine between pier and the shield machine respectively
Movable pushing device；
S7 shield machine movement) is pushed by the thrustor, and originates portal away from described in the cutterhead end face of the shield machine
Stop pushing after up to designated length, is moved to the shield body of the shield machine along originator when the shield machine during promotion
When shield tail is more than the reaction frame, the assembled negative endless tube piece between the shield tail and the reaction frame；
S8 portal, the shield machine driving are originated described in) abolishing.
2. construction method according to claim 1, which is characterized in that step S1) according to surveying and locating as a result, described
The shaft bottom of special-shaped well successively pours identical first originating station of height and second from originate opposite direction of the portal along shield machine is originated
Originating station, comprising:
The profile of each unilateral originating station of first originating station and second originating station is determined according to surveying and locating result
The position of size and reaction frame mounting groove；
Setting-out goes out multiple bar planting points in the profile of each unilateral originating station, bar planting and executes on multiple bar planting points
Reinforcing bar is bound to form the framework of steel reinforcement of each unilateral originating station, and the framework of steel reinforcement of each unilateral originating station has bone
Frame horizontal plane and the skeleton inclined-plane with the skeleton horizontal plane with the first angle；
According to surveying and locating result along originate opposite direction according to preset space length each unilateral originating station framework of steel reinforcement
Muti-piece support steel plate is respectively welded on skeleton inclined-plane and skeleton horizontal plane；
The positioning steel connecting with the end of the framework of steel reinforcement of each unilateral originating station is welded in the reaction frame mounting groove
Plate；
According to surveying and locating result on the skeleton horizontal plane of the framework of steel reinforcement of each unilateral originating station of second originating station
Weld supporting steel plate in position apart from first spacing of reaction frame mounting groove；
The profile for being bonded the framework of steel reinforcement of each unilateral originating station installs formwork for placing and pours chamber to be formed；
Intracavitary injection concrete is poured to described to form first originating station and second originating station；
First originating station and second originating station that pour are conserved.
3. construction method according to claim 2, which is characterized in that first angle is between 15 ° -30 °.
4. construction method according to claim 2, which is characterized in that step S2) in first originating station and described
On the installation inclined-plane of second originating station asymmetric tunnel axis install two it is parallel originate guide rail so that each originate guide rail across
On the installation inclined-plane of first originating station and second originating station, comprising:
Each is originated the steel of each unilateral originating station of guide rail and first originating station and second originating station
The welding of support steel plate described in muti-piece on the skeleton inclined-plane of tendons skeleton.
5. construction method according to claim 1, which is characterized in that step S4) in reaction frame is installed in the counter-force
It is fixed in frame mounting groove and with first originating station and second originating station, comprising:
The reaction frame is lifted into reaction frame mounting groove；
By the two root posts of the reaction frame towards first originating station one side respectively with corresponding first originating station
The fixing steel plate that is welded of end of framework of steel reinforcement of each unilateral originating station fix, by the two root posts court of the reaction frame
To second originating station one side respectively with the framework of steel reinforcement of each unilateral originating station of corresponding second originating station
The fixing steel plate that end is welded is fixed；
Branch on the skeleton horizontal plane of the reaction frame and the framework of steel reinforcement of each unilateral originating station of second originating station
Multiple support diagonal braces are welded between support steel plate.
6. construction method according to claim 1, which is characterized in that the step S5) in first originating station and
Asymmetric tunnel axis installs multiple shield bodies and moves pier on the horizontal mounting surface of second originating station, comprising:
Multiple shield bodies are moved to the muti-piece support steel on the skeleton horizontal plane of the framework of steel reinforcement of pier and each unilateral originating station
Plate corresponds welding.
7. construction method according to claim 1, which is characterized in that step S6) described in thrustor be separate type liquid
Press jack.
8. construction method according to claim 1, which is characterized in that the step S8) in abolish and originate portal and include:
Scaffold is set up between portal in the cutterhead of the shield machine and described originate；Strip the structure originated where portal
Reinforcing bar within the walls.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811267788.7A CN109519179B (en) | 2018-10-29 | 2018-10-29 | Special-shaped well shield starting construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811267788.7A CN109519179B (en) | 2018-10-29 | 2018-10-29 | Special-shaped well shield starting construction method |
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| CN109519179B CN109519179B (en) | 2021-03-02 |
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Cited By (1)
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| CN112012753A (en) * | 2020-09-17 | 2020-12-01 | 江苏西尔德建设工程有限公司 | Shield tunneling machine starting method based on special-shaped extension steel ring |
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| Publication number | Publication date |
|---|---|
| CN109519179B (en) | 2021-03-02 |
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