CN106013172A - Double row pile and diagonal brace combined soft soil deep foundation pit supporting structure and construction method - Google Patents

Double row pile and diagonal brace combined soft soil deep foundation pit supporting structure and construction method Download PDF

Info

Publication number
CN106013172A
CN106013172A CN201610516496.7A CN201610516496A CN106013172A CN 106013172 A CN106013172 A CN 106013172A CN 201610516496 A CN201610516496 A CN 201610516496A CN 106013172 A CN106013172 A CN 106013172A
Authority
CN
China
Prior art keywords
diagonal brace
campshed
plate
pile
construction
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.)
Granted
Application number
CN201610516496.7A
Other languages
Chinese (zh)
Other versions
CN106013172B (en
Inventor
王新泉
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.)
Zhajiang Xinyu Construction Co., Ltd.
Original Assignee
Hangzhou Jiangrun Technology 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 Hangzhou Jiangrun Technology Co Ltd filed Critical Hangzhou Jiangrun Technology Co Ltd
Priority to CN201610516496.7A priority Critical patent/CN106013172B/en
Publication of CN106013172A publication Critical patent/CN106013172A/en
Application granted granted Critical
Publication of CN106013172B publication Critical patent/CN106013172B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18Bulkheads or similar walls made solely of concrete in situ
    • E02D5/187Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00Production methods

Abstract

The invention relates to a double row pile and diagonal brace combined soft soil deep foundation pit supporting structure. An inner row pile and an outer row pile are arranged outside a foundation pit, a connecting plate, a top curing region, a pile block coupling beam and a vertical waterproof pile are arranged between the inner row pile and the outer row pile, and a vertical water-stop plate is inserted into the vertical waterproof pile; a pit bottom slurry soil fixing layer is arranged in the bottom of the foundation pit along the inner side of the inner row pile; a diagonal brace is arranged between the inner row pile and a basic raft board, and a vertical steel latticework column is arranged across the middle part of the diagonal brace; a bottom supporting pier is arranged at the connection of the diagonal brace and the basic raft board, and a waist beam is arranged at the connection of the diagonal brace and the inner row pile; and an anti-floating anchor and a main body structural pile are arranged under the basic raft board. The structure provided by the invention not only can enhance the stability of the foundation pit support structure and reduce the pit bottom rebound deformation, but also can prevent seepage failure of the foundation pit. The invention further discloses a construction method of the double row pile and diagonal brace combined soft soil deep foundation pit supporting structure.

Description

Double-row pile and diagonal brace combination Deep Foundation Pit Support for Soft Soil structure and construction method
Technical field
The present invention relates to a kind of pattern foundation pit supporting structure intensity, dynamically double-row pile of control Supporting Structure deformation of can effectively promoting and combine soft with diagonal brace Soil deep foundation pit supporting construction method, belongs to underground engineering field, it is adaptable to soft clay area, Deep Foundation Pit Supporting Project.
Background technology
Along with the quickening of Urbanization in China speed, people are to the exploitation of the underground space and utilize increasingly extensive, building foundation pit work The features such as Cheng Chengxian " big, deep, tight, near ", various novel forms of going along with sb. to guard him, construction technology continue to bring out.For large area Deep-foundation pit engineering, traditional pile-anchor retaining form can be restricted on construction space, limited circumstances the most on construction ground Under, transversal reinforcement body often difficulty sets, and base pit stability relies primarily on shearing strength and the resistance to capsizing of support pile.
Existing a kind of big foundation ditch diagonal brace structure, it include diagonal brace rod member, diagonal brace counterforce device, support pile end right angle pallet, Screw bolt and nut, it is characterised in that: described diagonal brace rod member is connected by bolted splice with diagonal brace counterforce device, described diagonal brace counter-force Device enters in foundation pit earth by static pressure, and described diagonal brace rod member and support pile end right angle pallet are by being articulated and connected, and support pile end is straight Angle pallet is connected with rectangle support pile end.Though this structure uses diagonal brace structure, but diagonal brace counterforce device is static pressure buries, Quality control on construction difficulty is bigger;Structure is difficult to water outside effective prevention and control foundation ditch and penetrates into.
A kind of with diagonal brace and the combination type foundation pit supporting construction drawing anchor, foundation pit supporting construction is provided with enclosure wall, enclosure wall top Portion is provided with a diagonal brace, and diagonal brace lower end connects bearing, and bearing is positioned at bottom foundation ditch, and is provided with for offsetting tiltedly throwing support active force Stiffening pile.This structure contributes to comprehensively have employed diagonal brace and draws anchor to promote the stability of foundation pit supporting construction, but structure is difficult to Overcome extraneous water to penetrate into, fail to carrying out reinforcement bottom diagonal brace simultaneously.
In sum, though existing foundation pit supporting construction can obtain good supporting effect under suitable operating mode, but at effective prevention and control base Outside hole, water penetrates into, the dynamic aspect such as diagonal brace support strength, rationalization's construction that controls remains certain deficiency.In consideration of it, based on Being actually needed of current engineering, the most urgently invents a kind of stability that foundation pit enclosure structure not only can be substantially improved, Er Qieke To reduce the resilience at the end, hole, it is also possible to prevent foundation ditch negative and positive angular position from occurring the double-row pile of seepage failure to combine weak soil with diagonal brace Deep foundation pit supporting construction method.
Summary of the invention
It is an object of the invention to provide a kind of simultaneously working as to control foundation pit supporting construction deformation, reduce the double of construction organization difficulty Campshed combines Deep Foundation Pit Support for Soft Soil construction method with diagonal brace.
For achieving the above object, present invention employs techniques below scheme:
This double-row pile combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace, arranges interior campshed and outer campshed, interior row outside foundation ditch Arranging connecting plate, curing area, top, stake top coupling beam and vertical water-seal pile between stake and outer campshed, vertical water-seal pile is inserted into vertically Water-stop sheet;Bottom foundation ditch, the inner side along interior campshed arranges the solid soil layer of hole prime cement;Between interior campshed and Base isolation system, diagonal brace is set, At diagonal brace span centre, vertical steel lattice column is set;Diagonal brace and Base isolation system joint arrange bottom support pier, and diagonal brace connects with interior campshed Place arranges waist rail;In Base isolation system anti-float anchor rod arranged below and agent structure stake.
As preferably: described bottom support pier upper surface is vertical with diagonal brace, and lay bottom bearing plate, at bottom support pier and base Between plinth raft plate, connection dowel is set.
As preferably: described agent structure stake uses digging hole filling pile;Vertical water-seal pile uses cement mixing pile.
As preferably: described interior campshed and outer campshed use pile for prestressed pipe, vertically lay template limiting plate along interior campshed and connect Hoop plate and connecting plate spacing ring;Described template limiting plate connecting hoop plate is fastenedly connected with interior campshed, described template limiting plate connecting hoop Plate is welded to connect with template limiting plate;Connecting plate spacing ring is laid from interior campshed and outer campshed top down, connecting plate spacing ring edge It is arranged circumferentially a connecting plate stopper slot;Two the connecting plate stopper slots corresponding with outer campshed at interior campshed are inserted into connecting plate.
As preferably: curing area, the top height downward 2-3m of original ground outside foundation ditch.
As preferably: described waist rail transverse section is the most trapezoidal, use reinforced concrete structure, in waist rail and interior campshed intersection Upper and lower be respectively provided with template limiting plate;On waist rail, reserved shear force wall reinforcing steel bar connects reinforcing bar through hole and shear wall.
As preferably: described diagonal brace uses steel pipe or shaped steel, arranges diagonal brace bearing plate, diagonal brace bearing plate and diagonal brace at diagonal brace two ends At right angles it is welded to connect;Bottom diagonal brace bearing plate contacts with pressure jack and pressure pier surface;The stress test on diagonal brace surface passes Sensor is welded to connect with diagonal brace or pastes and is connected.
As preferably: described steel lattice column top arranges hinged-support and pressure diffusion plate, length is set in the middle of described steel lattice column and adjusts Joint bolt, is connected with agent structure stake top bottom described steel lattice column.
As preferably: described water-stop sheet uses sidewall to paste geomembrane or the steel plate of sheet rubber;It is provided with shear wall outside interior campshed, Arranging water barrier between shear wall and interior campshed, described water barrier uses geomembrane or sheet rubber, water barrier and interior campshed and basis Raft plate is pasted and is connected.
This double-row pile combines Deep Foundation Pit Support for Soft Soil construction method with diagonal brace, including following construction procedure:
1), field surveys: according to site operation requirement, carry out engineering mapping at engineering site, find out engineering geology soil nature, Lower water level, foundation ditch and the existing distance closing on building, and mark interior campshed, outer campshed, the stake position of agent structure stake at the scene;
2), interior campshed and outer campshed construction: outside interior campshed, be inserted in template limiting plate connecting hoop plate, connecting plate spacing ring, It is inserted in connecting plate spacing ring outside outer campshed, then sets pile for prestressed pipe straight down, campshed and outer campshed in being formed, and guarantee Article two, connecting plate stopper slot is to being located along the same line;
3), the construction of vertical water-seal pile: between interior campshed and outer campshed, under interior campshed is lateral, set cement mixing pile, and Before vertical water-seal pile concrete initial set, vertically water-seal pile axis inserts water-stop sheet, makes water-stop sheet top mark height at the bottom of connecting plate Absolute altitude;
4), connecting plate construction: in the middle of connecting plate lifting to interior campshed and outer campshed, make connecting plate dual-side insert connecting plate limit In the connecting plate stopper slot of position ring;
5), curing area, top construction: before vertical water-seal pile concrete final set, the soil body pressure injection between internal campshed and outer campshed Hardening slurry, forms curing area, top;
6), foundation ditch internal upper part soil excavation: formed after intensity until construction supporting structure, 1/3~1/2 height model in excavation pit Enclose the interior soil body, then put slope to foundation ditch elevation of bottom to treatment with external measures platform in the middle of foundation ditch;
7), mid-section body structure and agent structure pile driving construction: carry out agent structure pile driving construction, in agent structure according to design stake position Stake top arranges Base isolation system and main structural frame post, and inner side along interior campshed arranges the solid soil layer of hole prime cement bottom foundation ditch;
8), diagonal brace bottom support pier construction: lay requirement according to diagonal brace, lay bottom support pier in setting position, the end, hole;
9), waist rail construction: template limiting plate is set in the setting position, inner side of interior campshed, and installs waist rail template, make waist rail mould Plate is connected by template connecting bolt with template limiting plate, and casting concrete forms waist rail subsequently;
10), steel lattice column construction: diagonal brace span centre position lay steel lattice column, anchor in agent structure stake bottom steel lattice column, Top arranges the hinged-support and pressure diffusion plate being connected with diagonal brace, and centre arranges length adjusting screws;
11), diagonal brace lay: at diagonal brace bottom support pier, pressure jack is set towards concrete breast beam side, make bottom bearing plate with Pressure jack is in close contact, and makes the diagonal brace bearing plate at diagonal brace two ends be completely embedded, at diagonal brace with waist rail, bottom support pier respectively Surface configuration stress test sensor;Make diagonal brace be completely embedded with steel lattice column simultaneously;Applied pre-by pressure jack pair diagonal brace Stress, pressure jack reinforcing passes through pressure pier pressure-bearing after completing;
12), diagonal brace position soil excavation: after diagonal brace has been constructed, then carry out diagonal brace position soil excavation, during soil excavation The stress situation of change of simultaneous observation diagonal brace, the Pressure behaviour born by changing diagonal brace controls the steady statue of supporting construction;
13), foundation ditch shear wall construction: after excavation of foundation pit completes, first the inner surface of campshed lays water barrier along foundation ditch, then props up If template carries out shear wall concreting and hole end remaining area Base isolation system pours;
14), diagonal brace is removed: after foundation ditch shear wall concrete strength meets requirement, diagonal brace pressure on top surface is laid down at interval, progressively removes Diagonal brace.
The invention has the beneficial effects as follows:
(1) present invention uses double-row pile combination stressed with diagonal brace, while guaranteeing foundation pit supporting construction stability, it is achieved that base Deformation in the digging process of hole, stable dynamic control.
(2) present invention introduces half against method technique in Excavation Process, both can control to cheat at the end in Excavation Process Rebound deformation amount, in turn, ensures that the construction quality of diagonal brace bottom support pier, and the bonding strength of diagonal brace and diagonal brace bottom support pier.
(3) vertical water-seal pile is set outside present invention campshed outside, and vertically water-seal pile axis inserts water proof flaggy, interior row Paste water barrier, the problem that can effectively solve foundation ditch seepage failure between stake and shear wall, improve the energy of foundation ditch impermeabilisation deformation Power.
Accompanying drawing explanation
Fig. 1 is that one double-row pile of the present invention combines Deep Foundation Pit Support for Soft Soil constructing structure schematic diagram with diagonal brace;
Fig. 2 is Fig. 1 waist rail formwork erection schematic diagram;
Fig. 3 is campshed and outer campshed connecting plate connection diagram in Fig. 1;
Fig. 4 is bearing plate and diagonal brace bearing plate connection diagram bottom Fig. 1;
Fig. 5 is that one double-row pile of the present invention combines Deep Foundation Pit Support for Soft Soil construction process figure with diagonal brace;
Fig. 6 is that campshed in Fig. 5, outer campshed, vertical water-seal pile have been constructed rear soil body subregion excavation schematic diagram.
Description of reference numerals: campshed in 1-;The outer campshed of 2-;3-connecting plate;Curing area, 4-top;5-stake top coupling beam;6-vertically stops Water stake;7-water-stop sheet;The 8-hole solid soil layer of prime cement;9-Base isolation system;10-diagonal brace;11-steel lattice column;12-bottom support pier;13- Waist rail;14-anti-float anchor rod;15-agent structure stake;Bearing plate bottom 16-;17-connects dowel;18-water barrier;19-template limits Position plate connecting hoop plate;20-connecting plate spacing ring;21-template limiting plate;22-connecting plate stopper slot;23-shear force wall reinforcing steel bar passes hole; 24-diagonal brace bearing plate;25-pressure jack;26-pressure pier;27-stress test sensor;28-hinged-support;29-pressure diffusion Plate;30-length adjusting screws;31-shear wall connects reinforcing bar;The 32-top soil body;33-Base isolation system;34-main structural frame Post;35-waist rail template;The 36-diagonal brace position soil body;37-shear wall;38-anti-float anchor rod expands termination;39-shear force wall reinforcing steel bar; The soil body outside 40-foundation ditch;41-template connecting bolt.
Detailed description of the invention
Illustrate embodiments of the invention are described in further detail below in conjunction with accompanying drawing, but the present embodiment is not limited to this Bright, the analog structure of every employing present invention and similar change thereof, protection scope of the present invention all should be listed in.
The construction technical requirement of pile for prestressed pipe, concrete pouring construction technology require, agent structure pile construction technology requires, base Hole soil excavation construction technical requirement, anti-float anchor rod design and construction technology requirement etc., repeats no more in present embodiment, emphasis Illustrate the embodiment that the present invention relates to structure.
Fig. 1 is that one double-row pile of the present invention combines Deep Foundation Pit Support for Soft Soil constructing structure schematic diagram with diagonal brace, and Fig. 2 is Fig. 1 waist rail Formwork erection schematic diagram, Fig. 3 is bearing plate and diagonal brace bearing plate connection diagram bottom Fig. 1.Shown in reference Fig. 1~Fig. 3, this Inventive structure, arranges interior campshed 1 and outer campshed 2 outside foundation ditch, arrange between interior campshed 1 and outer campshed 2 connecting plate 3, Curing area, top 4, stake top coupling beam 5, vertical water-seal pile 6, vertical water-seal pile 6 is inserted into vertical water-stop sheet 7;Bottom foundation ditch Inner side along interior campshed 1 arranges the solid soil layer 8 of hole prime cement;Between interior campshed 1 and Base isolation system 9, diagonal brace 10 is set, at diagonal brace 10 span centres arrange vertical steel lattice column 11;Diagonal brace 10 and Base isolation system 9 joint arrange bottom support pier 12 and interior campshed 1 Joint arranges waist rail 13;In Base isolation system 9 anti-float anchor rod arranged below 14 and agent structure stake 15.
Interior campshed 1 and outer campshed 2 use the pile for prestressed pipe of diameter 500, the long 12m of interior campshed, the long 10m of outer campshed.Along interior Campshed 1 vertically lays template limiting plate connecting hoop plate 19 and connecting plate spacing ring 20.Template limiting plate connecting hoop plate 19 uses height The rustless steel anchor ear of intensity, is fastenedly connected with interior campshed 1, is welded to connect with template limiting plate 21.Template limiting plate 21 uses Thick 20mm, strength grade are the steel plate of Q235.Connecting plate spacing ring 20 is laid from interior campshed 1 and outer campshed 2 top down, Circumferentially arranging a connecting plate stopper slot 22, limited impression is inverted trapezoidal, top width 60mm, bottom width 100mm, high 60mm; It is inserted into connecting plate 3 at two connecting plate stopper slots 22 that interior campshed 1 and outer campshed 2 are corresponding, the thick 60mm of connecting plate 3, Dual-side sets wide 90mm, the trapezoidal joint of high 60mm, and the concrete strength of connecting plate 3 is 40Mpa.
Curing area, top 4, the hole solid soil layer 8 of prime cement all use draws pore pressure and notes hardening slurry mode and formed, curing area, top 4 thickness 2m, the solid soil layer 8 thickness 2m of hole prime cement, hardening slurry all uses cement mortar.
Stake top coupling beam 5 uses reinforced beam, deck-siding 600mm, and strength grade of concrete is C35.
Vertical water-seal pile 6 uses the cement mixing pile of diameter 600mm.
Water-stop sheet 7 uses sidewall to paste the steel plate of geomembrane, steel plate thickness 10mm.
Base isolation system 9 uses the armoured concrete slab of thick 500mm, strength grade of concrete C25.
Diagonal brace 10 uses long 8m, strength grade to be the H profile steel that Q235, height and width are 300mm;Diagonal brace 10 with Base isolation system 9 angle is 30 °.Arrange diagonal brace bearing plate 24 at diagonal brace two ends, diagonal brace bearing plate 24 at right angles welds with diagonal brace 10 Connect in succession;Diagonal brace bearing plate 24 uses long 800mm, wide 400mm, thick 20mm strength grade to be the steel plate of Q235;The end Portion's diagonal brace bearing plate 24 contacts with pressure jack 25 and pressure pier 26 surface;Pressure jack 25 uses 100t automatically to lock pressure Hydraulic jack;The H profile steel cutting that pressure pier 26 uses height and width to be 300mm forms;Answering of diagonal brace 10 surface Power test sensor 27 is pasted with diagonal brace 10 and is connected, and stress test sensor 27 uses resistance-strain type maximum range to be 20mm Surface strain sensor.
The H profile steel cutting that steel lattice column 11 uses height and width to be 300mm forms, and arranges at steel lattice column 11 top Hinged-support 28 and pressure diffusion plate 29, centre arranges length adjusting screws 30.Hinged-support 28 uses the rustless steel of diameter 40mm Rotating shaft.Pressure diffusion plate 29 uses wide 400mm, long 500mm, thick 20mm, strength grade to be the rectangular steel plates of Q235.
Water barrier 18 is set between shear wall 37 and interior campshed 1 and uses geomembrane, water barrier 18 and interior campshed 1, Base isolation system 33 paste connection.The thick 500mm of shear wall 37, wall height 8m, strength grade of concrete C30.Water barrier 18 uses thick 10mm Sheet rubber.
Bottom support pier 12 transverse section bottom width 500mm, high 500mm, using strength grade is the concreting of C30.The end Arrange between portion's support pier 12 with Base isolation system 9 and be connected dowel 17.Connect dowel 17 and use diameter 32mm, the spiral shell of long 1m Stricture of vagina reinforcing bar.Bottom bearing plate 16 uses long 800mm, wide 300mm, thick 20mm strength grade to be the steel plate of Q235.
Waist rail 13 transverse section is in " right-angled trapezium " shape, and the end, 300mm, top width 400, high 500mm, employing armored concrete is tied Structure, strength grade of concrete is C35.On waist rail 13, reserved shear force wall reinforcing steel bar connects reinforcing bar 31 through hole 23 and shear wall. Shear force wall reinforcing steel bar passes the high 500mm in hole 23, diameter 30mm.Shear wall connects reinforcing bar 31 and uses diameter 25mm, long 0.3m Spiral.
Anti-float anchor rod 14 uses diameter 32mm, the spiral of long 10m, and bottom reinforcing bar, mud jacking forms anti-float anchor rod and expands termination 38。
Agent structure stake 15 uses digging hole filling pile, stake diameter 800mm.
Template connecting bolt 33 uses the stainless steel bolt of diameter 25mm.
The square column that main structural frame post 34 uses width to be 500mm, strength grade of concrete is C40.
Waist rail template 35 use thick 10mm, strength grade be Q235 steel plate be prefabricated into the bottom panel identical with waist rail 13 shape and Side panel.
Shear force wall reinforcing steel bar 39 uses the spiral of diameter 25mm as vertical reinforcement, uses diameter 20mm plain steel-bar conduct Transverse steel.
Outside the foundation ditch internal upper part soil body 32, the diagonal brace position soil body 36, foundation ditch, the soil body 40 is the muck soil of plastic state.
A kind of double-row pile combines Deep Foundation Pit Support for Soft Soil construction method with diagonal brace, including following construction procedure:
1), field surveys: according to site operation requirement, carry out engineering mapping at engineering site, find out engineering geology soil nature, Lower water level, foundation ditch and the existing distance closing on building, and campshed 1 in mark, outer campshed 2, agent structure stake 15 at the scene Stake position;
2), interior campshed 1 and outer campshed 2 are constructed: be inserted in template limiting plate connecting hoop plate 19, connecting plate limit outside interior campshed 1 Position ring 20, is inserted in connecting plate spacing ring 20 outside, then sets pile for prestressed pipe straight down outside campshed, campshed 1 He in being formed Outer campshed 2, and guarantee that two connecting plate stopper slots 22 are to being located along the same line;
3), vertical water-seal pile 6 is constructed: between interior campshed 1 and outer campshed 2, set cement stir under interior campshed 1 is lateral Mix stake, and before vertical water-seal pile concrete initial set, vertically water-seal pile 6 axis inserts water-stop sheet 7, makes water-stop sheet 7 top mark Height is in connecting plate 3 end absolute altitude;
4), connecting plate 3 is constructed: is lifted by connecting plate 3 to interior campshed 1 middle with outer campshed 2, makes connecting plate dual-side insert In the connecting plate stopper slot 22 of connecting plate spacing ring 20;
5), construct in curing area, top 4: before vertical water-seal pile 6 concrete final set, between internal campshed 1 and outer campshed 2 Soil body pressure injection hardening slurry, forms curing area, top 4;
6), the foundation ditch internal upper part soil body 32 excavates: after construction supporting structure forms intensity, in excavation pit, 1/3~1/2 highly In the range of the soil body, then put slope to foundation ditch elevation of bottom to treatment with external measures platform in the middle of foundation ditch;
7), mid-section body structure and agent structure stake 15 are constructed: carry out agent structure stake 15 according to design stake position and construct, are leading Body structure pile top arranges Base isolation system 9 and main structural frame post 34, and inner side along interior campshed 1 arranges hole bottom foundation ditch The solid soil layer 8 of prime cement;
8), diagonal brace bottom support pier 12 is constructed: lays requirement according to diagonal brace 10, lays bottom support pier in setting position, the end, hole 12;
9), waist rail 13 constructs: arranges template limiting plate 21 in the setting position, inner side of interior campshed 1, and installs waist rail template 35, Making waist rail template 35 be connected by template connecting bolt 33 with template limiting plate 21, casting concrete forms waist rail 13 subsequently;
10), steel lattice column 11 is constructed: lays steel lattice column 11 at diagonal brace 10 span centre position, anchors into master bottom steel lattice column 11 In body structure pile 15, top arranges the hinged-support 28 and pressure diffusion plate 29 being connected with diagonal brace 10, and centre arranges length adjustment Bolt 30;
11), diagonal brace 10 is laid: arranges pressure jack 25 at diagonal brace bottom support pier 12 towards concrete breast beam 13 side, makes Bottom bearing plate 16 is in close contact with pressure jack 25, make the diagonal brace bearing plate 24 at diagonal brace two ends respectively with waist rail 13, the end Portion's support pier 12 is completely embedded, at diagonal brace surface configuration stress test sensor;Make diagonal brace 10 be connected with steel lattice column 11 simultaneously Closely;By pressure jack 25 to diagonal brace 10 Shi Hanzhang, the very heavy 25 top reinforcings of pressure pass through pressure pier 26 after completing Pressure-bearing;
12), the diagonal brace position soil body 36 excavates: after diagonal brace 10 has been constructed, then carries out the diagonal brace position soil body 36 and excavate, the soil body The stress situation of change of simultaneous observation diagonal brace 10 in digging process, the Pressure behaviour born by changing diagonal brace 10 controls supporting and ties The steady statue of structure.
13), foundation ditch shear wall 37 is constructed: after excavation of foundation pit completes, first along foundation ditch, the inner surface of campshed 1 lays water barrier 18, then install template carry out shear wall 37 concreting and hole end remaining area Base isolation system 9 pour;
14), diagonal brace 10 removes: after foundation ditch shear wall 37 concrete strength meets and requires, diagonal brace 10 pressure on top surface is laid down at interval, Progressively remove diagonal brace 10.

Claims (10)

1. a double-row pile combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace, it is characterised in that: interior campshed (1) is set outside foundation ditch With outer campshed (2), connecting plate (3), curing area, top (4), stake top are set between interior campshed (1) and outer campshed (2) Coupling beam (5) and vertical water-seal pile (6), vertical water-seal pile (6) is inserted into vertical water-stop sheet (7);Along interior row bottom foundation ditch The inner side of stake (1) arranges the solid soil layer (8) of hole prime cement;Diagonal brace (10) is set between interior campshed (1) and Base isolation system (9), At diagonal brace (10) span centre, vertical steel lattice column (11) is set;Diagonal brace (10) and Base isolation system (9) joint arrange bottom Support pier (12), diagonal brace (10) and interior campshed (1) joint arrange waist rail (13);Arranged below anti-at Base isolation system (9) Drogue bar (14) and agent structure stake (15).
A kind of double-row pile the most according to claim 1 combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace, it is characterised in that: institute State bottom support pier (12) upper surface vertical with diagonal brace (10), and lay bottom bearing plate (16), in bottom support pier (2) It is connected dowel (17) with arranging between Base isolation system (9).
A kind of double-row pile the most according to claim 1 combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace, it is characterised in that: institute State agent structure stake (15) and use digging hole filling pile;Vertical water-seal pile (6) uses cement mixing pile.
A kind of double-row pile the most according to claim 1 combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace, it is characterised in that: institute The interior campshed (1) stated and outer campshed (2) use pile for prestressed pipe, vertically lay template limiting plate connecting hoop along interior campshed (1) Plate (19) and connecting plate spacing ring (20);Described template limiting plate connecting hoop plate (19) is fastenedly connected with interior campshed (1), Described template limiting plate connecting hoop plate (19) is welded to connect with template limiting plate (21);Connecting plate spacing ring (20) is from interior row Stake (1) and outer campshed (2) top down are laid, and connecting plate spacing ring (20) circumferentially arranges a connecting plate stopper slot (22); Two the connecting plate stopper slots (22) corresponding at interior campshed (1) and outer campshed (2) are inserted into connecting plate 3.
A kind of double-row pile the most according to claim 1 combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace, it is characterised in that: top Curing area, portion (4) height downward 2-3m of original ground outside foundation ditch.
A kind of double-row pile the most according to claim 1 combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace, it is characterised in that: institute State waist rail (13) transverse section the most trapezoidal, use reinforced concrete structure, in waist rail (13) and interior campshed (1) intersection Upper and lower be respectively provided with template limiting plate (21);At the upper reserved shear force wall reinforcing steel bar of waist rail (13) through hole (23) and shearing Wall connects reinforcing bar (31).
A kind of double-row pile the most according to claim 1 combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace, it is characterised in that: institute State diagonal brace (10) and use steel pipe or shaped steel, diagonal brace bearing plate (24), diagonal brace bearing plate (24) are set at diagonal brace (10) two ends At right angles it is welded to connect with diagonal brace (10);Bottom diagonal brace bearing plate (24) and pressure jack (25) and pressure pier (26) Surface contacts;The stress test sensor (27) on diagonal brace (10) surface is welded to connect with diagonal brace (10) or pastes and is connected.
A kind of double-row pile the most according to claim 1 combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace, it is characterised in that: institute State steel lattice column (11) top and setting in the middle of hinged-support (28) and pressure diffusion plate (29), described steel lattice column (11) is set Length adjusting screws (30), described steel lattice column (11) bottom is connected with agent structure stake (15) top.
A kind of double-row pile the most according to claim 1 combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace, it is characterised in that: institute Stating water-stop sheet (7) uses sidewall to paste geomembrane or the steel plate of sheet rubber;Interior campshed (1) outside is provided with shear wall (37), cuts Arranging water barrier (18) between power wall (37) and interior campshed (1), described water barrier (18) uses geomembrane or sheet rubber, Water barrier (18) is pasted with interior campshed (1) and Base isolation system (33) and is connected.
10. a double-row pile combines Deep Foundation Pit Support for Soft Soil construction method with diagonal brace, it is characterised in that include following construction procedure:
1), field surveys: according to site operation requirement, carry out engineering mapping at engineering site, find out engineering geology soil nature, Lower water level, foundation ditch and the existing distance closing on building, and mark interior campshed (1), outer campshed (2), agent structure stake at the scene (15) stake position;
2), interior campshed (1) and outer campshed (2) construction: interior campshed (1) outside be inserted in template limiting plate connecting hoop plate (19), Connecting plate spacing ring (20, it is inserted in connecting plate spacing ring (20) outside outside campshed, then sets pile for prestressed pipe, shape straight down Campshed (1) and outer campshed (2) in becoming, and guarantee that two connecting plate stopper slots (22) are to being located along the same line;
3), vertical water-seal pile (6) construction: between interior campshed (1) and outer campshed (2), lateral near interior campshed (1) Under set cement mixing pile, and before vertical water-seal pile concrete initial set, vertically water-seal pile (6) axis inserts water-stop sheet (7), Make water-stop sheet (7) top mark height in connecting plate (3) end absolute altitude;
4), connecting plate (3) construction: in the middle of connecting plate (3) lifting to interior campshed (1) and outer campshed (2), make connection Plate dual-side inserts in the connecting plate stopper slot (22) of connecting plate spacing ring (20);
5), curing area, top (4) construction: before vertical water-seal pile (6) concrete final set, internal campshed (1) and outer campshed (2) soil body pressure injection hardening slurry between, forms curing area, top (4);
6), the foundation ditch internal upper part soil body (32) excavation: after construction supporting structure forms intensity, in excavation pit, 1/3~1/2 is high The soil body in the range of degree, then put slope to foundation ditch elevation of bottom to treatment with external measures platform in the middle of foundation ditch;
7), mid-section body structure and agent structure stake (15) construction: according to design stake position carry out agent structure stake (15) construction, Base isolation system (9) and main structural frame post (34) are set on agent structure stake top, and along interior campshed (1) bottom foundation ditch Inner side the hole solid soil layer (8) of prime cement is set;
8), diagonal brace bottom support pier (12) construction: lay requirement according to diagonal brace (10), bottom setting position, the end, hole is laid Support pier (12);
9), waist rail (13) construction: template limiting plate (21) is set in the setting position, inner side of interior campshed (1), and installs waist Beam forms (35), is made waist rail template (35) be connected by template connecting bolt (33) with template limiting plate (21), waters subsequently Build concrete and form waist rail (13);
10), steel lattice column (11) construction: lay steel lattice column (11), steel lattice column (11) at diagonal brace (10) span centre position Bottom anchors in agent structure stake (15), and top arranges the hinged-support (28) and pressure diffusion plate (29) being connected with diagonal brace (10), Centre arranges length adjusting screws (30);
11), diagonal brace (10) is laid: arrange pressure at diagonal brace bottom support pier (12) towards concrete breast beam (13) side very heavy Top (25), makes bottom bearing plate (16) be in close contact with pressure jack (25), makes the diagonal brace bearing plate (24) at diagonal brace two ends It is completely embedded with waist rail (13), bottom support pier (12) respectively, at diagonal brace surface configuration stress test sensor;Make tiltedly simultaneously Support (10) is completely embedded with steel lattice column (11);By pressure jack (25) to diagonal brace (10) Shi Hanzhang, pressure Power very heavy (25) top reinforcing passes through pressure pier (26) pressure-bearing after completing;
12), the diagonal brace position soil body (36) excavation: after diagonal brace (10) has been constructed, then carry out the diagonal brace position soil body (36) and open Dig, the stress situation of change of simultaneous observation diagonal brace (10) during soil excavation, by changing the pressure that diagonal brace (10) bears Dynamically control the steady statue of supporting construction;
13), foundation ditch shear wall (37) construction: after excavation of foundation pit completes, first the inner surface of campshed (1) is laid along foundation ditch Water barrier (18), then install template carry out shear wall (37) concreting and hole end remaining area Base isolation system (9) pour;
14), diagonal brace (10) is removed: after foundation ditch shear wall (37) concrete strength meets requirement, diagonal brace (10) is laid down at interval Pressure on top surface, progressively removes diagonal brace (10).
CN201610516496.7A 2016-07-01 2016-07-01 Double-row pile combines Deep Foundation Pit Support for Soft Soil structure and construction method with diagonal brace Active CN106013172B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610516496.7A CN106013172B (en) 2016-07-01 2016-07-01 Double-row pile combines Deep Foundation Pit Support for Soft Soil structure and construction method with diagonal brace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610516496.7A CN106013172B (en) 2016-07-01 2016-07-01 Double-row pile combines Deep Foundation Pit Support for Soft Soil structure and construction method with diagonal brace

Publications (2)

Publication Number Publication Date
CN106013172A true CN106013172A (en) 2016-10-12
CN106013172B CN106013172B (en) 2018-02-27

Family

ID=57106721

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610516496.7A Active CN106013172B (en) 2016-07-01 2016-07-01 Double-row pile combines Deep Foundation Pit Support for Soft Soil structure and construction method with diagonal brace

Country Status (1)

Country Link
CN (1) CN106013172B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107246015A (en) * 2017-07-20 2017-10-13 中大建设股份有限公司 A kind of super-sized foundation pit subregion adds inner supporting structure and construction method after excavating
CN108301418A (en) * 2017-01-13 2018-07-20 张继红 Taper pile construction equipment, taper pile construction method and taper pile deep foundation pit supporting structure
CN108756895A (en) * 2018-05-07 2018-11-06 安徽省公路桥梁工程有限公司 A kind of tunnel excavation support construction method
CN109056656A (en) * 2018-08-08 2018-12-21 杭州江润科技有限公司 Tidal channel construction method is formed based on portable sliding formwork integral cast-in-situ
CN109537599A (en) * 2018-10-09 2019-03-29 杭州江润科技有限公司 The construction method of deep foundation pit support system support changing structure for use
CN110700281A (en) * 2019-11-21 2020-01-17 深圳市东深工程有限公司 Deep foundation pit supporting construction process
CN111424680A (en) * 2020-04-21 2020-07-17 陈木养 Foundation pit supporting structure based on multiple miniature piles and construction method thereof
CN111622234A (en) * 2020-06-12 2020-09-04 中赟国际工程有限公司 Unloading type thin-wall box-type retaining wall supported by obliquely and vertically combined steel pipe pile and construction process
CN112663624A (en) * 2020-12-21 2021-04-16 亚都建设集团有限公司 Composite support for foundation pit and construction method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100957599B1 (en) * 2010-01-20 2010-05-13 (주)힐건설 Basement-structure construction method to use temporary earth retaining structure
CN201794079U (en) * 2010-09-26 2011-04-13 济南大学 Foundation pit supporting system
CN202936797U (en) * 2012-12-05 2013-05-15 昆明理工大学 Double-row pile supporting structure with inclined struts
CN103452121A (en) * 2013-08-26 2013-12-18 中冶集团武汉勘察研究院有限公司 Long pile and short pile combined single-row pile and horizontal internal support pile supporting structure and construction method thereof
CN204098043U (en) * 2014-09-22 2015-01-14 中南勘察设计院(湖北)有限责任公司 After staying soil, excavation is in conjunction with inner support Retaining Structure with Double-row Piles
CN206204954U (en) * 2016-07-01 2017-05-31 深圳市金世纪工程实业有限公司 Double-row pile combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100957599B1 (en) * 2010-01-20 2010-05-13 (주)힐건설 Basement-structure construction method to use temporary earth retaining structure
CN201794079U (en) * 2010-09-26 2011-04-13 济南大学 Foundation pit supporting system
CN202936797U (en) * 2012-12-05 2013-05-15 昆明理工大学 Double-row pile supporting structure with inclined struts
CN103452121A (en) * 2013-08-26 2013-12-18 中冶集团武汉勘察研究院有限公司 Long pile and short pile combined single-row pile and horizontal internal support pile supporting structure and construction method thereof
CN204098043U (en) * 2014-09-22 2015-01-14 中南勘察设计院(湖北)有限责任公司 After staying soil, excavation is in conjunction with inner support Retaining Structure with Double-row Piles
CN206204954U (en) * 2016-07-01 2017-05-31 深圳市金世纪工程实业有限公司 Double-row pile combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
史毅清: "型钢斜支撑组合支护技术在深基坑工程中的应用", 《施工技术》 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108301418A (en) * 2017-01-13 2018-07-20 张继红 Taper pile construction equipment, taper pile construction method and taper pile deep foundation pit supporting structure
CN107246015A (en) * 2017-07-20 2017-10-13 中大建设股份有限公司 A kind of super-sized foundation pit subregion adds inner supporting structure and construction method after excavating
CN108756895A (en) * 2018-05-07 2018-11-06 安徽省公路桥梁工程有限公司 A kind of tunnel excavation support construction method
CN108756895B (en) * 2018-05-07 2019-09-03 安徽省公路桥梁工程有限公司 A kind of tunnel excavation support construction method
CN109056656A (en) * 2018-08-08 2018-12-21 杭州江润科技有限公司 Tidal channel construction method is formed based on portable sliding formwork integral cast-in-situ
CN109056656B (en) * 2018-08-08 2020-09-18 杭州江润科技有限公司 Flood discharge ditch construction method based on portable slip form integral cast-in-place molding
CN109537599B (en) * 2018-10-09 2020-08-14 杭州江润科技有限公司 Construction method of support replacing structure of deep foundation pit support system
CN109537599A (en) * 2018-10-09 2019-03-29 杭州江润科技有限公司 The construction method of deep foundation pit support system support changing structure for use
CN110700281A (en) * 2019-11-21 2020-01-17 深圳市东深工程有限公司 Deep foundation pit supporting construction process
CN111424680A (en) * 2020-04-21 2020-07-17 陈木养 Foundation pit supporting structure based on multiple miniature piles and construction method thereof
CN111622234A (en) * 2020-06-12 2020-09-04 中赟国际工程有限公司 Unloading type thin-wall box-type retaining wall supported by obliquely and vertically combined steel pipe pile and construction process
CN112663624A (en) * 2020-12-21 2021-04-16 亚都建设集团有限公司 Composite support for foundation pit and construction method

Also Published As

Publication number Publication date
CN106013172B (en) 2018-02-27

Similar Documents

Publication Publication Date Title
CN106013172A (en) Double row pile and diagonal brace combined soft soil deep foundation pit supporting structure and construction method
CN1307348C (en) Construction method for underground structure through half reverse course of action of inverting connection
CN202672093U (en) Anchoring type dock wall structure of sheet-pile wall
CN205742213U (en) Foundation pit supporting construction
CN103741714A (en) Construction method for full cover-excavation reverse method of underground engineering
CN105951612B (en) Stake head bug repairing and reinforcement structure and its construction method under active service bridge water
CN104846841B (en) Anti-floating construction method for basements without uplift piles
CN206204954U (en) Double-row pile combines Deep Foundation Pit Support for Soft Soil structure with diagonal brace
CN101787701B (en) Construction method for supporting pine pile in elevator shaft foundation pit
CN108612110A (en) A kind of Deep Foundation Pit of Metro Stations combined type construction method for supporting
CN105672450A (en) Laying method for large-aperture water draining pipeline parallel to upper part of existing metro tunnel structure
CN106193644B (en) Basement reconstruction structure with raft foundation building
CN103321246A (en) Underground diaphragm wall based foundation pit construction method
CN103088830A (en) Construction method for composite outer wall structure of ultra-deep basement
CN110004991A (en) Underground structure anti-floating system and construction method based on raised type tangs plate
CN110205921A (en) The precast assembly pier stud construction and construction method of bellows connection are inserted by reinforcing bar
CN104652495A (en) Waterproof construction process for joint of inner support upright post of foundation pit and bottom plate
CN108035379B (en) Comprehensive pipe gallery and construction method thereof
CN201943086U (en) Underground building wall body
CN104975607A (en) Offshore area local deep foundation pit stanching pit construction method
CN102653946A (en) Waterproof construction method for setting rubber waterstop at bottom of reinforced concrete raft foundation
CN204282295U (en) Pile formula case cylinder breakwater structure
CN109322320A (en) The construction method of Deep Thick Soft Ground Area cushion cap and basement bottom board
CN105113513B (en) Anti-seepage foundation pit supporting structure and construction method
CN108396878B (en) A kind of section steel beam is combined with profiled sheet blocks entrance construction method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
CB03 Change of inventor or designer information

Inventor after: Wu Shengguang

Inventor after: Chu Weiping

Inventor after: Fu Lianfa

Inventor after: Peng Yuyu

Inventor after: Jin Jinzhu

Inventor before: Wang Xinquan

CB03 Change of inventor or designer information
TA01 Transfer of patent application right

Effective date of registration: 20180104

Address after: 325000 Zhejiang Province, Wenzhou city Lucheng District Tangjiaqiao road nature homes 5 room 2101

Applicant after: Zhajiang Xinyu Construction Co., Ltd.

Address before: 310015 Hangzhou Wanda Commercial Center, Zhejiang, building 3, unit 1901, room 3

Applicant before: Hangzhou Jiang Run Science and Technology Ltd.

GR01 Patent grant
GR01 Patent grant