CN108396778A - A kind of construction method in precast assembly tunnel - Google Patents

A kind of construction method in precast assembly tunnel Download PDF

Info

Publication number
CN108396778A
CN108396778A CN201810074617.6A CN201810074617A CN108396778A CN 108396778 A CN108396778 A CN 108396778A CN 201810074617 A CN201810074617 A CN 201810074617A CN 108396778 A CN108396778 A CN 108396778A
Authority
CN
China
Prior art keywords
side wall
construction
bottom plate
cast
top plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810074617.6A
Other languages
Chinese (zh)
Inventor
赵健
何显松
罗刚
邵晓峰
严小舟
杨洋
谭斌
钟健
邬菊学
罗毅
魏运鸿
孙春平
毕小毛
钟翔
刘彬斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu City Investment City Construction Technology Co Ltd
Chengdu Municipal Engineering And Research Design Institute
Chengdu City Construction Technology Investment Management Group Co Ltd
China Railway 23rd Bureau Group Co Ltd
Architetural Design Institute Co Ltd of China Railway 23rd Bureau Group Co Ltd
Original Assignee
Chengdu City Investment City Construction Technology Co Ltd
Chengdu Municipal Engineering And Research Design Institute
Chengdu City Construction Technology Investment Management Group Co Ltd
China Railway 23rd Bureau Group Co Ltd
Architetural Design Institute Co Ltd of China Railway 23rd Bureau Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu City Investment City Construction Technology Co Ltd, Chengdu Municipal Engineering And Research Design Institute, Chengdu City Construction Technology Investment Management Group Co Ltd, China Railway 23rd Bureau Group Co Ltd, Architetural Design Institute Co Ltd of China Railway 23rd Bureau Group Co Ltd filed Critical Chengdu City Investment City Construction Technology Co Ltd
Priority to CN201810074617.6A priority Critical patent/CN108396778A/en
Publication of CN108396778A publication Critical patent/CN108396778A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/045Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • E02D29/05Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

The invention discloses a kind of tunnel construction technologies.The construction method in the precast assembly tunnel of the present invention, the precast assembly tunnel include prefabricated top plate, side wall and bottom plate, and the connecting portion between each precast wall body is cast-in-place linkage section, and construction procedure is:Prefabricated top plate, side wall and bottom plate;Side wall mounting groove trenching construction, the side wall mounting groove use TRD engineering method construction moldings;Side wall is installed, side wall is spliced into multiple framed side wallboards;The earthwork between side wall is excavated from the top down, forms tunnel basis section;Mounting base;Top plate is installed.Top plate, side wall and bottom plate are all made of prefabricated, and connecting portion is the cast-in-place linkage section of wet type between precast wall body, is conducive to live rapid construction, reduces the interference to road;Installation is hung in using TRD engineering methods construction side wall mounting groove, then by prefabricated side wall, stable support of tunnel basis is formed, ensures tunnel structure intensity, the track of occupancy is smaller, minimum to the interference of road, reduces the wasting of resources.

Description

A kind of construction method in precast assembly tunnel
Technical field
The present invention relates to a kind of tunnel construction technology, more particularly to a kind of construction method in precast assembly tunnel.
Background technology
With urbanization process quickening and city road network it is more and more ripe, for city old road it is rapid Transformation becomes increasingly important.In the transformation process of old road, the rapid and realization of engineering construction is current rapid same It is important, it is provided with the road structure that under-traverse tunnel is more science, it can save ground space, overall effect simple and beautiful, Therefore it is widely used.It is carried out in existing city road network due to carrying out under-traverse tunnel transformation to existing road, institute It is very stringent with the construction period of construction, to reduce to townie interference.
Existing under-traverse tunnel mostly uses falsework, the form of cast-in-place concrete is constructed, but there are the construction period compared with Long problem causes urban transportation the influence of some time;The external under-traverse tunnel engineering of reference and underground pipe gallery system, The mentality of designing for now proposing precast assembly tunnel is completed the prefabricated of tunnel piecemeal or tunnel construction sections in pre-fabricated factory, then is transported Assembled construction is carried out to construction site, is had and is saved duration, short to road interference time and small environmental pollution excellent Point, so being paid close attention to by this field.
But during practice of construction, how could realize rapid construction, reduce the interference to road, and overcome It is existing to add cast-in-place concrete to bring adverse effect using falsework, steel reinforcement cage while exempting traditional foundation pit supporting construction construction Waste, save construction cost.
Invention content
It is an object of the invention to when the assembled constructing tunnel formed using prefabricated piecemeal, how could realize and quickly apply The interference of work, reduction to road, and overcome existing use falsework, steel reinforcement cage that cast-in-place concrete is added to bring unfavorable shadow The technical issues of ringing while exempting traditional foundation pit supporting construction construction waste, provides a kind of construction method in precast assembly tunnel, In the construction method, top plate, side wall and bottom plate are all made of prefabricated, and the connecting portion of each precast wall body is the cast-in-place company of wet type Section is connect, is conducive to live quick-assembling construction, reduces the interference to road;Using TRD engineering methods construction side wall mounting groove, then will Prefabricated side wall hangs in installation, forms stable support of tunnel basis, ensures tunnel structure intensity, the track of occupancy is smaller, right The interference of road is minimum, reduces the wasting of resources.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:
A kind of construction method in precast assembly tunnel, the precast assembly tunnel includes prefabricated top plate, side wall and bottom plate, each Connecting portion between precast wall body is cast-in-place linkage section, and construction procedure is:
A, prefabricated top plate, side wall and bottom plate;
B, side wall mounting groove trenching construction, the side wall mounting groove use TRD engineering method construction moldings;
D, side wall is installed, side wall, supporting and retaining system soil at both sides are spliced into multiple framed side wallboards;
E, the earthwork between side wall is excavated from the top down, forms tunnel passage space section;
F, mounting base;
E, top plate is installed.
In the construction method, top plate, side wall and bottom plate be all made of it is prefabricated, if having middle wall also be prefabricated, each precast wall body Connecting portion be wet type cast-in-place linkage section, be conducive to live quick-assembling and construct, reduce interference to road;Separately Outside, side wall is first installed in construction procedure, first uses TRD engineering methods construction side wall mounting groove, then prefabricated side wall is hung in into installation, shape At stable support of tunnel basis, further realizes rapid construction and ensure tunnel structure intensity, and constructed and used due to side wall The step of TRD engineering method grooving adds prefabricated side wall to install, Gu the track occupied when side wall is constructed is smaller, to road when side wall is constructed Current interference is minimum, while being also avoided that problem of resource waste caused by existing foundation pit temporary support structures construction.
Preferably, in step E, is carried out by the way of half range construction on road, first encircled and hunted down in road side It constructs, after the completion of the side wall, bottom plate and mounting of roof plate that wait for the side, restores road traffic, then the road other side is encircled and hunted down Construction.Half range construction reduces the interference to road again, alleviates the passage problem of urban road in work progress. In the construction stage, precast wall body can be used as foundation pit supporting construction, undertakes soil lateral pressure and water pressure, ensures base pit stability, In exterior wall of the permanent service stage precast wall body as tunnel, additional increase foundation pit supporting construction can be exempted, save material, section About land used.
Further, tunnel thickness of earth covering 40-60cm, the pipeline for crossing frame assembly tunnel upper take local reduction The mode of tunnel roof reserves arrangement space.
Preferably, the side wall includes multiple framed side wallboards mutually spliced, the splicing end face of each framed side wallboard its two On a vertical side, the first spelling joint and for the installation that cooperates is respectively equipped on two of each framed side wallboard splicing end faces Two spelling joints are correspondingly provided with reserved grout groove, in framed side wallboard assembly, first on two mutually assembled framed side wallboard splicing end faces It realizes that rapid-aligning assembles using the first spelling joint and the cooperation of the second spelling joint, then injects anti-water coagulation into reserved grout groove Soil.
Preferably, buried water stop in being additionally provided in the slip casting slot formed after two framed side wallboard assembly, is perfused coagulation Middle buried water stop is permanently fixed in slip casting slot after soil.
Preferably, installing waterproof connector at the splicing seams of framed side wallboard, the waterproof connector includes being covered in framed side wallboard Steel sealing plate on splicing seams is equipped with pre-buried card slot, the pre-buried card slot and steel sealing plate on two framed side wallboards mutually spliced Installation end be correspondingly arranged.It is covered using steel sealing plate at framed side wallboard splicing seams, and is arranged on the framed side wallboard of splicing seams both sides The pre-buried card slot of steel sealing plate is installed, the installation of steel sealing plate is convenient for, and forms stable connection structure and waterproof construction.
Further, laying water-proof coiled material and fish tail and waterproof layer on the wall face of side wall.It is arranged on side wall wall face Waterproof roll and fish tail and waterproof layer form the outsourcing waterproof construction of side wall, and waterproof connector is installed at the splicing seams of framed side wallboard The continuity for ensureing waterproof construction, meets waterproof requirement.
Preferably, being equipped with bottom plate built-in connection in the end of bottom plate and side wall splicing, connect on side wall corresponding position There is a side wall built-in connection, when mounting base, is connect with side wall built-in connection using bottom plate built-in connection, carry out cast-in-place company Connect the construction of section.
Further, if there is middle wall in assembled tunnel, wall built-in connection in being correspondingly arranged with bottom plate on middle wall is convenient for bottom The Fast Installation of plate.
Preferably, being additionally provided with the cast-in-place hole of anti-floating pile on bottom plate, bottom plate is run through in the cast-in-place hole of anti-floating pile, on bottom plate The embedded bar extended in the also pre-buried cast-in-place hole of oriented anti-floating pile carries out the cast-in-place anti-floating pile driving construction of bottom plate after bottom plate positioning.
Preferably, when installation top plate, slip casting notch, top plate and the cast-in-place company of side wall are equipped in top plate and side wall splicing end face When connecing section construction, the inside slip casting of slip casting notch is utilized.Specially in the slip casting notch of the splicing end set of top plate, it is convenient for connection Position is full of slurries, realizes stable connection structure, ensures the quality of connection of top plate and side wall.
Preferably, setting the embedded bar being mutually matched in top plate and side wall splicing end respectively, coordinate cast-in-place linkage section Transverse joint is formed between top plate and side wall, and a plurality of chance is set in straight wall transverse joint and wall splicing end contact site Water expansion sealing strip.A plurality of water expandable waterstop is set on the face that transverse joint is contacted with wall, meets waterproof demand.
Compared with prior art, beneficial effects of the present invention:
1, in the construction method, top plate, side wall and bottom plate are all made of prefabricated, and the connecting portion of each precast wall body is wet type Cast-in-place linkage section is conducive to live quick-assembling construction, reduces the interference to road;Using the construction side wall installation of TRD engineering methods Slot, then prefabricated side wall is hung in into installation, stable support of tunnel basis is formed, ensures tunnel structure intensity, the track of occupancy It is smaller, it is minimum to the interference of road, reduce the wasting of resources;
2, half range construction reduces the interference to road again, and the passage for alleviating urban road in work progress is asked Topic;
3, in the construction stage, precast wall body can be used as foundation pit supporting construction, undertakes soil lateral pressure and water pressure, ensures that foundation pit is steady It is qualitative, additional increase foundation pit supporting construction can be exempted, material is saved, save the area;In permanent service stage, precast wall body is same Shi Zuowei undertakes part upper load, achievees the effect that a wall is multi-purpose.
Description of the drawings:
Fig. 1 is the construction process figure of the construction method in precast assembly tunnel of the present invention.
Fig. 2 is the structural schematic diagram in precast assembly tunnel in embodiment.
Fig. 3 is the schematic diagram that side wall splices waterproof construction in embodiment.
Fig. 4 is the structural schematic diagram of waterproof splicing device in Fig. 3.
Fig. 5 is the schematic diagram of the outer waterproof construction of side wall in precast assembly tunnel in embodiment.
Fig. 6 is the schematic diagram of backplanes support connection structure.
Fig. 7 is the splicing bottom plate in precast assembly tunnel and side wall connection diagram in embodiment.
Fig. 8 is the structural schematic diagram of the anti-floating pile constructing structure on bottom plate.
Fig. 9 is the connection diagram of prefabricated panel and anti-floating pile in embodiment.
Figure 10 is the structural schematic diagram of the horizontally-spliced structure of precast assembly tunnel straight wall in embodiment.
It is marked in figure:1- top plates, 101- slip casting notch, 2- side walls, the first framed side wallboards of 201-, the second framed side wallboards of 202-, 203- third framed side wallboards, 3- bottom plates, 301- bottom plate embedded bars, 302- bottom plate splicing blocks, the cast-in-place hole of 303- anti-floating piles, 304- Pre- pile anchoring muscle, wall in 4-, the cast-in-place linkage sections of 5-, 6- waterproof splicing devices, buried water stop in 61-, the first spelling joints of 62-, 621- the first pre-buried steel board groups, 622- connections are to hook, and 623- first reserves grout groove, the second spelling joints of 63-, and 631- second is pre-buried Steel plate group, 632- connection hook grooves, 633- second reserve grout groove, 7- waterproof rolls, 8- fish tail and waterproof layers, the pre-buried card slots of 9-, 10- Steel sealing plate, 11- support shaped steel, 12- reinforcing steel bar connecting sleeve tubes, the cast-in-place anti-floating piles of 13-, 14- water expandable waterstops, 15- second are anti- Water coiled material.
Specific implementation mode
With reference to test example and specific implementation mode, the present invention is described in further detail.But this should not be understood It is only limitted to embodiment below for the range of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that the content of present invention is realized The range of invention.
Embodiment 1
As depicted in figs. 1 and 2, the construction method in the present embodiment precast assembly tunnel, the under-traverse tunnel for urban road are constructed, The precast assembly tunnel of the present embodiment includes prefabricated top plate 1, side wall 2 and bottom plate 3, including middle wall 4, between each precast wall body Connecting portion be cast-in-place linkage section 5, construction procedure is:
A, prefabricated top plate 1, side wall 2 and bottom plate 3 and middle wall 4;
B, side wall mounting groove trenching construction, the side wall mounting groove use TRD engineering method construction moldings;
D, side wall 2 is installed, side wall 2, supporting and retaining system soil at both sides are spliced into multiple side wall ash wall body plates;
E, the earthwork between side wall 2 is excavated from the top down, forms tunnel basis section;
F, mounting base 3;
E, top plate 1 is installed.
In the construction method of the present embodiment, top plate, side wall, middle wall and bottom plate are all made of prefabricated, the company of each precast wall body Socket part position is the cast-in-place linkage section of wet type, is conducive to live quick-assembling construction, reduces the interference to road;In addition, applying Side wall is first installed during work step is rapid, TRD engineering methods construction side wall mounting groove is first used, then prefabricated side wall is hung in into installation, is formed steady Fixed support of tunnel basis, further realizes rapid construction and ensures tunnel structure intensity, and since side wall construction uses TRD works The step of method grooving adds prefabricated side wall to install, Gu the track occupied when side wall is constructed is smaller, to road when side wall is constructed Interference it is minimum, while being also avoided that problem of resource waste caused by the construction of existing foundation pit temporary support structures.
Embodiment 2
As shown in Fig. 1 and Figure 10, according to the construction method in precast assembly tunnel described in embodiment 1, the present embodiment is by the construction party Method is used for the assembled constructing tunnel of crossroad, the precast assembly tunnel of the present embodiment, including prefabricated top plate 1, wallboard and bottom Plate 3, the wallboard in the present embodiment includes side wall 2 and middle wall 4, and the connecting portion between each precast wall body is cast-in-place linkage section 5, the wallboard includes multiple ash wall body plates spliced successively, and waterproof splicing device is designed on the splicing end face of each ash wall body plate 6, the waterproof splicing device 6 includes 62 and second spelling joint 63 of mutually matched first spelling joint, first spelling joint 62 It is separately positioned on the assembled end faces of single ash wall body plate opposite two with the second spelling joint 63, in two mutually assembled ash wall body plates Splicing end face on be correspondingly provided with reserved grout groove.
Further, slip casting slot is formed after two ash wall body plate assembly, and middle buried water stop 61, this reality are equipped in slip casting slot Apply the explanation that example carries out side wall splicing waterproof construction by taking the first framed side wallboard 201 and the second framed side wallboard 202 as an example, the first framed side wallboard 201 and 202 assembly of the second framed side wallboard after formed slip casting slot, in slip casting slot be equipped with middle buried water stop 61.In two framed side wallboards After assembly, the reserved grout groove being correspondingly arranged forms slip casting slot, and buried water stop in being arranged in slip casting slot, further supplement is anti- Aqueous energy.After two ash wall body plate assembly, the reserved grout groove being correspondingly arranged forms slip casting slot, buried in being arranged in slip casting slot Waterstop further supplements water resistance.
The precast assembly tunnel of the present embodiment includes prefabricated profiled top plate, wallboard and bottom plate, convenient for live rapid construction; The waterproof splicing device being arranged on each ash wall body plate splicing end face, that is, be separately positioned on two opposite assembly of single ash wall body plate The first spelling joint on end face and the second spelling joint, and the first spelling joint and the second spelling joint cooperate and connect installation, in this way In two ash wall body plate assembly, can be connected by two made up joint, and also there are assembly for another installation end face of ash wall body plate Connector and another ash wall body plate are installed, and are so recycled, are formed stable side wall convenient for quick-assembling or middle wall construction, raising are applied Work efficiency rate;And it is also correspondingly provided with reserved grout groove in mutual assembled wall plate end face, after splicing into reserved grout groove Slurries are injected, waterproof construction is formed by water-proof concrete slip casting, ensure the water resistance of assembled tunnel sidewalls;It is mutually matched First spelling joint and the second spelling joint pour into a mould the structural strengthening of concrete in conjunction with reserved grout groove, ensure the splicing of entire side wall Intensity ensures service life and the safety in assembled tunnel.
The present embodiment is illustrated from the ash wall body plate splicing construction of side wall 2, further, with the second framed side wallboard 202 It is illustrated for spelling joint, as shown in figure 3, first spelling joint 62 includes being connected to the second framed side wallboard 202 splicing end face On connection to hook 622, installation connection is also embedded in side wall ash wall body plate 202 to the first pre-embedded steel slab 621 of hook 622.
Further, as shown in figure 3, second spelling joint 63 includes being mounted on 202 other side of the second framed side wallboard to spell Connection hook groove 632 on contact surface, the connection hook groove 632 with connect to hook 622 match be arranged, in the second framed side wallboard 202 It is also embedded with the second pre-embedded steel slab 631 of installation connection hook groove 632, the first splicing is respectively set in 202 both sides of the second framed side wallboard Head and the second spelling joint, spelling is also respectively set in the both sides of the face of the first framed side wallboard 201 and the second framed side wallboard 203 that splice therewith Connector thus forms continuous splicing construction.Connect two installations that single ash wall body plate is separately positioned on to hook and connection hook groove It on end face, and connects hook groove and connect to hook matching setting, installed convenient for rapid-aligning in ash wall body plate assembly, and in ash wall body plate Interior pre-buried installation connects the pre-embedded steel slab to hooking and connecting hook groove, convenient for forming stable connection structure, ensures bonding strength.
Further, the connection is that two L-shaped steel plates being oppositely arranged form to hook 622, corresponding to hook 622 with connecting Connection hook groove 632 there are two L-shaped steel plate is set.
In the present embodiment, it is designed with reserved grout groove on two splicing end faces of single side wall ash wall body plate 202, respectively The connection in the ash wall body plate is arranged to hook in first reserved grout groove 623 and the second reserved grout groove 633, the reserved grout groove Between 622.Reserved grout groove setting is in connection between hook, and ash wall body plate splicing is after installation is complete, convenient in the hook for realizing connection Fixed slurries are perfused between slot, form stable connection and waterproof construction.
Further, waterproof roll 7 and fish tail and waterproof layer 8 are additionally provided on the wall face of side wall, in the ash wall body plate of side wall Splicing seams at be also equipped with waterproof connector.Waterproof roll and fish tail and waterproof layer are set on side wall wall face, form side wall Outsourcing waterproof construction, and the continuity that waterproof connector ensures waterproof construction is installed at the splicing seams of ash wall body plate, meet waterproof and wants It asks.
The waterproof connector includes the steel sealing plate 10 being covered on ash wall body plate splicing seams, in two ash wall body plates mutually spliced On be equipped with pre-buried card slot 9, the pre-buried card slot 9 and the installation end of steel sealing plate 10 are correspondingly arranged.It is adopted at ash wall body plate splicing seams It is covered with steel sealing plate, and the pre-buried card slot of steel sealing plate is installed in setting in the ash wall body plate of splicing seams both sides, is convenient for the peace of steel sealing plate Dress, and form stable connection structure and waterproof construction.
The present embodiment is equipped with bottom plate built-in connection in the end of bottom plate 3 and wallboard splicing, is accordingly connected on wallboard Wallboard built-in connection, the bottom plate built-in connection are correspondingly arranged the connection structure to match with wallboard built-in connection.
Bottom plate built-in connection and wallboard built-in connection, and two built-in connections are respectively set on bottom plate and wallboard Match, pre-buried processing is completed in bottom plate and wallboard, when constructing at the scene, the assembly of bottom plate and wallboard can be rapidly completed, carry High construction efficiency;And the connection structure for design corresponding with bottom plate built-in connection and wallboard built-in connection of specially arranging in pairs or groups, ensure Bonding strength ensures the bonding strength of bottom plate and wallboard in the reinforcement for coordinating cast-in-place linkage section;Finally, by COMPREHENSIVE CALCULATING and Selection is that can reach to bear the lateral effect with vertical force of bottom plate by bottom plate built-in connection and wallboard built-in connection, into And the connection bar construction between floor pack can be cancelled when compared with long tunnel situation, bottom plate spicing forming type step is reduced, is improved Construction efficiency.
Specifically, the bottom plate built-in connection is bottom plate embedded bar 301, and the wallboard built-in connection on side wall is Side wall embedded bar 201, and reinforcing steel bar connecting sleeve tube 12 is arranged.The design of bottom plate embedded bar and wallboard embedded bar coordinates steel The splicing of muscle branch sleeve, connection structure firm stable, bottom plate and side wall or middle wall is efficient.
As shown in fig. 6, the bottom plate 3 of the present embodiment is spliced by multiple bottom plate splicing blocks 302.
In the present embodiment, type steel support wall 11 is also connected in the lower end of side wall 2 and middle wall 4.In wallboard lower end, shaped steel is set Knee wall replaces concrete wall using shaped steel, can construction and installation type steel support wall at the scene, it is possible to reduce communications and transportation weight Weight is lifted with wall, and intensity and structural requirement can be met.The type steel support wall of the present embodiment is H profile steel or I-shaped steel At.
The present embodiment is additionally provided with the cast-in-place hole 303 of anti-floating pile on bottom plate 3, and bottom plate 3 is run through in the cast-in-place hole 303 of anti-floating pile, The also pre-buried cast-in-place 303 interior pre- pile anchoring muscle 304 extended of hole of oriented anti-floating pile on bottom plate 3.
The present embodiment sets pre- pile anchoring muscle by presetting the cast-in-place hole of anti-floating pile on bottom plate in the cast-in-place hole of anti-floating pile, When coordinating steel reinforcement cage cast anti-floating pile, plays the cast positioning to anti-floating pile and realize what bottom plate and anti-floating pile were bonded Effect, due to embedded bar can with it is cast-in-place made of anti-floating pile be stably connected with, realize anti-floating pile to the tension in assembled tunnel and anti- Press function.
Further, more pre- pile anchoring muscle 304 are equipped on bottom plate 3, more pre- pile anchoring muscle 304 are along the cast-in-place hole of anti-floating pile 303 are evenly arranged.More pre- pile anchoring muscle are evenly arranged along the cast-in-place hole of anti-floating pile, its linkage section is equal after being conducive to cast-in-place formation anti-floating pile Even stress, guarantee bottom plate and anti-floating pile are stably connected with structure.
In the present embodiment, the pre- pile anchoring muscle 304 is L-shaped, and fixed edge is embedded in advance in bottom plate 3, and free margins is in anti-floating pile Extend in cast-in-place hole 303.L-shaped pre- pile anchoring muscle fixed edge is embedded in bottom plate, and free margins extends in the cast-in-place hole of anti-floating pile, When pouring into a mould concrete in the cast-in-place hole of anti-floating pile, the free end of pre- pile anchoring muscle, which is embedded in cast-in-place concrete, to achieve a fixed connection, And L-shaped pre- pile anchoring muscle makes its part in anti-floating pile longer, more conducively ensures bonding strength.
Further, the fixed edge of the pre- pile anchoring muscle 304 is radially extended along the cast-in-place hole of anti-floating pile 303, and free margins is along anti- The floating cast-in-place hole 303 of stake is axially extending.The free margins of pre- pile anchoring muscle is axial arranged conducive to increase bonding strength along the cast-in-place hole of anti-floating pile.
Specifically, cast-in-place anti-floating pile 13 is connected under bottom plate 3, the cast-in-place anti-floating pile 13, which is that steel reinforcement cage is cast-in-place, to be formed, institute Steel reinforcement cage is stated to match with the free margins of pre- pile anchoring muscle 304.The steel reinforcement cage of anti-floating pile and the free margins of pre- pile anchoring muscle are equipped with, Bottom plate and anti-floating pile can be realized by the equal frame of free margins of all pre- pile anchoring muscle among steel reinforcement cage, then after carrying out cast-in-place cast It is bonded.
The present embodiment is in the cast-in-place linkage section 5 of top plate 1 and side wall 2, including is embedded in top plate 1 and the splicing of side wall 2 respectively The embedded bar of end, the embedded bar extend wall splicing end face and are mutually matched, and are additionally provided in top plate splicing end Slip casting notch 101, the slip casting notch 101 are arranged on assembled tunnel wall face.
The present embodiment does not set embedded bar by splicing end part in top plate and side wall, and embedded bar extends wall simultaneously It is mutually matched, bonding strength is can guarantee after cast-in-place transverse joint, and specially in the slip casting notch of the splicing end set of top plate, just In being full of slurries to connecting portion, realizes stable connection structure, ensure the quality of connection of top plate and side wall.
In the present embodiment, the slip casting notch 101 and the angle of top plate splicing end face are 45 degree.Slip casting notch angle is set Being smoothed out for slip casting can most be can guarantee by counting to 45 degree.
Further, the embedded bar size for being embedded in top plate 1 and the splicing of side wall 2 end respectively matches, and equipped with use In the reinforced bar sleeve of connection.By the top plate and side wall of straight screw sleeve connection spelling portion both sides, realizes quickly connection installation and ensure The effect of bonding strength.
In the present embodiment, the slip casting notch 101 splices end along top plate 1 and is laterally extended, between top plate 1 and side wall 2 Cast-in-place concrete is filled in space, forms cast-in-place linkage section 5.
Further, it is additionally provided with a plurality of water expandable waterstop 14 on the cast-in-place linkage section 5, the water-swellable stops The setting of water bar 14 splices end contact site in cast-in-place linkage section 5 and wall.On the face that straight wall transverse joint is contacted with wall A plurality of water expandable waterstop is set, waterproof demand is met.
In the present embodiment, the second waterproof roll 15, second waterproof roll 15 are additionally provided in the outside of cast-in-place linkage section 5 It is arranged close on the tunnel exterior wall at splicing position.Wall on the outside of straight wall transverse joint sets waterproof roll, further right Splice position and carry out waterproofing protection, reduces the water resistance to the assembled tunnel of erosion, guarantee for splicing position.
Due to being the assembled constructing tunnel of crossroad, in the step E of the present embodiment, using half range construction on road Mode carries out, i.e., first carries out encircling and hunting down construction in road side, after the completion of the side wall, bottom plate and mounting of roof plate that wait for the side, restores road Then face traffic carries out the road other side encircling and hunting down construction.Half range construction reduces the interference to road again, delays Solve the passage problem of urban road in work progress.And in the construction stage, precast wall body can be used as foundation pit supporting construction, undertake side To soil pressure and water pressure, ensure that base pit stability can exempt in exterior wall of the permanent service stage precast wall body as tunnel It is additional to increase foundation pit supporting construction, it saves material, save the area.
Further, the tunnel thickness of earth covering of the present embodiment is 50cm, and the pipeline for crossing frame assembly tunnel upper is adopted The mode that part reduces tunnel roof is taken to reserve arrangement space.
Further, it in framed side wallboard assembly, is realized first with the first spelling joint 62 and the cooperation of the second spelling joint 63 fast Speed contraposition assembling, then inject water-proof concrete into reserved grout groove.
Further, buried water stop 61 in being additionally provided in the slip casting slot formed after two framed side wallboard assembly, perfusion Middle buried water stop 61 is permanently fixed in slip casting slot after concrete.
Specifically, waterproof connector is also installed at the splicing seams of framed side wallboard, the waterproof connector includes being covered in framed side wallboard Steel sealing plate 10 on splicing seams is equipped with pre-buried card slot 9, the pre-buried card slot 9 and steel on two framed side wallboards mutually spliced The installation end of sealing plate 10 is correspondingly arranged.It is covered using steel sealing plate at framed side wallboard splicing seams, and in the framed side wallboard of splicing seams both sides The pre-buried card slot of upper setting installation steel sealing plate, is convenient for the installation of steel sealing plate, and form stable connection structure and waterproof construction.
Further, laying water-proof coiled material and fish tail and waterproof layer on the wall face of side wall.It is arranged on side wall wall face Waterproof roll and fish tail and waterproof layer form the outsourcing waterproof construction of side wall, and waterproof connector is installed at the splicing seams of framed side wallboard The continuity for ensureing waterproof construction, meets waterproof requirement.
Further, it is equipped with bottom plate built-in connection in the end that bottom plate 3 and side wall 2 splice, in side wall corresponding position On be connected with side wall built-in connection, when mounting base, connect, showed with side wall built-in connection using bottom plate built-in connection Pour the construction of linkage section.
Further, wall built-in connection in being also correspondingly arranged with bottom plate on middle wall 4 is convenient for the Fast Installation of bottom plate.
Further, when top plate 1 is installed, splices end face in top plate 1 and side wall 2 and be equipped with slip casting notch 101, top plate and side When the cast-in-place linkage section of wall is constructed, the inside slip casting of slip casting notch is utilized.Specially in the slip casting notch of the splicing end set of top plate, just In being full of slurries to connecting portion, realizes stable connection structure, ensure the quality of connection of top plate and side wall.
In the present embodiment, splices end in top plate 1 and side wall 2 respectively and set the embedded bar being mutually matched, coordinate cast-in-place company It connects section and forms transverse joint between top plate and side wall, and be arranged in the transverse joint of straight wall and wall splicing end contact site A plurality of water expandable waterstop 14.A plurality of water expandable waterstop is set on the face that transverse joint is contacted with wall, is met anti- Water demand.
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive Feature and/or step other than, can combine in any way.
This specification(Including any accessory claim, abstract and attached drawing)Disclosed in any feature, except non-specifically chatting It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only It is an example in a series of equivalent or similar characteristics.

Claims (10)

1. a kind of construction method in precast assembly tunnel, which is characterized in that the precast assembly tunnel includes prefabricated top plate, side Wall and bottom plate, the connecting portion between each precast wall body is cast-in-place linkage section, and construction procedure is:
A, prefabricated top plate, side wall and bottom plate;
B, side wall mounting groove trenching construction, the side wall mounting groove use TRD engineering method construction moldings;
D, side wall is installed, side wall, supporting and retaining system soil at both sides are spliced into multiple framed side wallboards;
E, the earthwork between side wall is excavated from the top down, forms tunnel passage space section;
F, mounting base;
E, top plate is installed.
2. the construction method in precast assembly tunnel according to claim 1, which is characterized in that in step E, adopted on road It is carried out with the mode that half range is constructed, first carries out encircling and hunting down construction in road side, wait for that the side wall, bottom plate and mounting of roof plate of the side are completed Afterwards, restore road traffic, then the road other side is carried out to encircle and hunt down construction.
3. the construction method in precast assembly tunnel according to claim 1, which is characterized in that the side wall includes multiple phases The framed side wallboard mutually spliced, the splicing end face of each framed side wallboard is on two vertical side, in two splicings of each framed side wallboard The first spelling joint and the second spelling joint of the installation that cooperates are respectively equipped on end face, in two mutually assembled framed side wallboard splicings It is correspondingly provided with reserved grout groove on end face, in framed side wallboard assembly, is realized first with the first spelling joint and the cooperation of the second spelling joint Rapid-aligning assembles, then injects water-proof concrete into reserved grout groove.
4. the construction method in precast assembly tunnel according to claim 3, which is characterized in that after two framed side wallboard assembly It is additionally provided with middle buried water stop in the slip casting slot of formation, middle buried water stop is permanently fixed in slip casting slot after concrete perfusion.
5. the construction method in precast assembly tunnel according to claim 4, which is characterized in that at the splicing seams of framed side wallboard Waterproof connector is installed, the waterproof connector includes the steel sealing plate being covered on framed side wallboard splicing seams, in two sides mutually spliced Pre-buried card slot is equipped on wallboard, the installation end of the pre-buried card slot and steel sealing plate is correspondingly arranged.
6. the construction method in precast assembly tunnel according to claim 5, which is characterized in that on the wall face upper berth of side wall If waterproof roll and fish tail and waterproof layer.
7. the construction method in the precast assembly tunnel according to one of claim 1-6, which is characterized in that in bottom plate and side wall The end of splicing is equipped with bottom plate built-in connection, is connected with side wall built-in connection on side wall corresponding position, when mounting base, profit It is connect with side wall built-in connection with bottom plate built-in connection, then carries out bottom plate temporary support, carry out applying for cast-in-place linkage section Work.
8. the construction method in precast assembly tunnel according to claim 7, which is characterized in that be additionally provided with anti-floating on bottom plate Bottom plate is run through in the cast-in-place hole of stake, the cast-in-place hole of anti-floating pile, extends in the also pre-buried cast-in-place hole of oriented anti-floating pile on bottom plate pre-buried Reinforcing bar carries out the cast-in-place anti-floating pile driving construction of bottom plate after bottom plate positioning.
9. the construction method in precast assembly tunnel according to claim 7, which is characterized in that when installation top plate, in top plate Slip casting notch, which is equipped with, when top plate is constructed with the cast-in-place linkage section of side wall with side wall splicing end face utilizes the inside slip casting of slip casting notch.
10. the construction method in precast assembly tunnel according to claim 9, which is characterized in that respectively in top plate and side wall Splicing end sets the embedded bar being mutually matched, and cast-in-place linkage section is coordinated to form transverse joint between top plate and side wall, and A plurality of water expandable waterstop is arranged with wall splicing end contact site in straight wall transverse joint.
CN201810074617.6A 2018-01-25 2018-01-25 A kind of construction method in precast assembly tunnel Pending CN108396778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810074617.6A CN108396778A (en) 2018-01-25 2018-01-25 A kind of construction method in precast assembly tunnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810074617.6A CN108396778A (en) 2018-01-25 2018-01-25 A kind of construction method in precast assembly tunnel

Publications (1)

Publication Number Publication Date
CN108396778A true CN108396778A (en) 2018-08-14

Family

ID=63094692

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810074617.6A Pending CN108396778A (en) 2018-01-25 2018-01-25 A kind of construction method in precast assembly tunnel

Country Status (1)

Country Link
CN (1) CN108396778A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109098720A (en) * 2018-10-23 2018-12-28 山东万广建设工程有限公司 Precast combined underground structure product and construction method
CN109137658A (en) * 2018-09-10 2019-01-04 贵州省绿筑科建住宅产业化发展有限公司 Four sections of assembled underground pedestrian passageway of one kind and its construction method
CN110042860A (en) * 2019-04-19 2019-07-23 中铁五局集团成都工程有限责任公司 The Construction Method of Metro Station of existing underpass intrusion
CN113774956A (en) * 2021-09-23 2021-12-10 中铁四院集团南宁勘察设计院有限公司 Assembled tunnel side wall assembly, assembled tunnel and construction method
CN113802842A (en) * 2020-06-17 2021-12-17 振中建设集团有限公司 Seamless construction method for assembled node connection part
CN114687377A (en) * 2020-12-30 2022-07-01 上海建工二建集团有限公司 Large-bottom-plate modular structure under time-limited condition and construction method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101725149A (en) * 2009-12-15 2010-06-09 中铁二局股份有限公司 Construction method of long open-cut tunnel
CN102226345A (en) * 2011-04-07 2011-10-26 中国建筑材料科学研究总院 Method for carrying out advanced water shut-off on post-cast strips in underground engineering and advanced water shut-off steel plate structure
CN204626378U (en) * 2015-04-20 2015-09-09 中国建筑第八工程局有限公司 The syndeton of coercion underground continuous wall
CN204753627U (en) * 2015-04-30 2015-11-11 黑龙江宇辉新型建筑材料有限公司 Prefabricated comprehensive piping lane
CN205276316U (en) * 2015-12-28 2016-06-01 南京明麓建筑工程有限公司 Modular prefabricated piping lane
CN105804115A (en) * 2016-02-29 2016-07-27 济南轨道交通集团有限公司 Integrated construction device and construction method for fabricated diaphragm wall or precast pile and fabricated underground station
CN205840885U (en) * 2016-07-15 2016-12-28 苏州大学 A kind of shield tunnel chip architecture and attachment structure thereof
CN106869172A (en) * 2017-04-01 2017-06-20 中交第二航务工程局有限公司 In-situ deposited prefabricated split-mounting type subway underground station construction method
CN206752446U (en) * 2017-05-19 2017-12-15 青岛瑞源工程集团有限公司 A kind of prefabricated sheet pile

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101725149A (en) * 2009-12-15 2010-06-09 中铁二局股份有限公司 Construction method of long open-cut tunnel
CN102226345A (en) * 2011-04-07 2011-10-26 中国建筑材料科学研究总院 Method for carrying out advanced water shut-off on post-cast strips in underground engineering and advanced water shut-off steel plate structure
CN204626378U (en) * 2015-04-20 2015-09-09 中国建筑第八工程局有限公司 The syndeton of coercion underground continuous wall
CN204753627U (en) * 2015-04-30 2015-11-11 黑龙江宇辉新型建筑材料有限公司 Prefabricated comprehensive piping lane
CN205276316U (en) * 2015-12-28 2016-06-01 南京明麓建筑工程有限公司 Modular prefabricated piping lane
CN105804115A (en) * 2016-02-29 2016-07-27 济南轨道交通集团有限公司 Integrated construction device and construction method for fabricated diaphragm wall or precast pile and fabricated underground station
CN205840885U (en) * 2016-07-15 2016-12-28 苏州大学 A kind of shield tunnel chip architecture and attachment structure thereof
CN106869172A (en) * 2017-04-01 2017-06-20 中交第二航务工程局有限公司 In-situ deposited prefabricated split-mounting type subway underground station construction method
CN206752446U (en) * 2017-05-19 2017-12-15 青岛瑞源工程集团有限公司 A kind of prefabricated sheet pile

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109137658A (en) * 2018-09-10 2019-01-04 贵州省绿筑科建住宅产业化发展有限公司 Four sections of assembled underground pedestrian passageway of one kind and its construction method
CN109098720A (en) * 2018-10-23 2018-12-28 山东万广建设工程有限公司 Precast combined underground structure product and construction method
CN110042860A (en) * 2019-04-19 2019-07-23 中铁五局集团成都工程有限责任公司 The Construction Method of Metro Station of existing underpass intrusion
CN113802842A (en) * 2020-06-17 2021-12-17 振中建设集团有限公司 Seamless construction method for assembled node connection part
CN114687377A (en) * 2020-12-30 2022-07-01 上海建工二建集团有限公司 Large-bottom-plate modular structure under time-limited condition and construction method
CN114687377B (en) * 2020-12-30 2023-08-08 上海建工二建集团有限公司 Large bottom plate modularized structure under time-limited condition and construction method
CN113774956A (en) * 2021-09-23 2021-12-10 中铁四院集团南宁勘察设计院有限公司 Assembled tunnel side wall assembly, assembled tunnel and construction method

Similar Documents

Publication Publication Date Title
CN108396778A (en) A kind of construction method in precast assembly tunnel
CN108252329B (en) Assembly type comprehensive pipe gallery for bearing force of enclosure structure and construction method thereof
CN106759420B (en) A kind of prefabricated assembled transformer substation foundation structure
CN110258640B (en) Construction method of superposed wall system for cover-excavation top-down construction
CN110055997A (en) A kind of prefabricated assembled cantilever retaining wall using grouting anchor connection mode
CN207794133U (en) Precast assembly tunnel
CN212004543U (en) Trackless steel pipe mounting structure in shield tunnel
CN110029753A (en) A kind of crack resistence exempts from float strips board wall body and construction method
CN113513041A (en) Assembled multi-layer flat-top large-span pillar-free underground structure and open excavation construction method thereof
CN105089182A (en) Concrete partition wall system for steel structure and construction method thereof
CN108360567A (en) The reversed construction method in precast assembly tunnel
CN108411938A (en) A kind of precast assembly tunnel
CN110004980B (en) Composite assembled underground structure and first-reverse-then-forward construction method
CN107514012A (en) A kind of partial precast assembly steel concrete combination underground pipe gallery for exempting from template
CN206635786U (en) Prefabricated assembled transformer substation foundation structure
CN112045841B (en) Construction method of assembly type beam-making pedestal for prefabricating high-speed railway box beam
CN113187487B (en) Construction method of double-layer full-section frozen underground excavation station structure of subway
CN210887303U (en) Coincide assembled utility tunnel structure
CN211816415U (en) Subway station side wall construction crack control prestressing force structure
CN209686449U (en) A kind of prefabricated assembled pipe gallery of sheet hydrant and its piping lane unit
CN209686448U (en) A kind of prefabricated assembled pipe gallery of sheet hydrant and its piping lane unit
CN207750089U (en) A kind of side wall splicing waterproof construction in precast assembly tunnel
CN208782449U (en) A kind of cable duct bank
CN218204326U (en) H-shaped steel upright column sleeve
CN109695347A (en) The construction techniques of curved device is held based on round steel

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20180814