CN110004938A - A kind of foundation pit side-wall structural strengthening suspension device - Google Patents

A kind of foundation pit side-wall structural strengthening suspension device Download PDF

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Publication number
CN110004938A
CN110004938A CN201910239169.5A CN201910239169A CN110004938A CN 110004938 A CN110004938 A CN 110004938A CN 201910239169 A CN201910239169 A CN 201910239169A CN 110004938 A CN110004938 A CN 110004938A
Authority
CN
China
Prior art keywords
foundation pit
wall
pit side
pile
suspension device
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
CN201910239169.5A
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Chinese (zh)
Inventor
任东兴
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.)
CREEC Chengdu Survey Design and Research Co Ltd
Original Assignee
CREEC Chengdu Survey Design and Research 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 CREEC Chengdu Survey Design and Research Co Ltd filed Critical CREEC Chengdu Survey Design and Research Co Ltd
Priority to CN201910239169.5A priority Critical patent/CN110004938A/en
Publication of CN110004938A publication Critical patent/CN110004938A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/04Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
    • 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
    • E02D5/22Piles
    • E02D5/58Prestressed concrete piles
    • 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
    • E02D5/74Means for anchoring structural elements or bulkheads
    • E02D5/76Anchorings for bulkheads or sections thereof in as much as specially adapted therefor

Abstract

The invention belongs to Base hole supporting technology fields, disclose a kind of foundation pit side-wall structural strengthening suspension device, for influencing to solve the problems, such as that existing foundation pit support device does not consider that the pile for prestressed pipe in foundation pit side-wall deforms foundation pit side-wall.The present invention in foundation pit side-wall by being arranged injected hole, and it is launched in injected hole into soil nailing and grout injection formation integral structure, then the purpose of common stress is connected up to by steel strand wires and pile for prestressed pipe in foundation pit side-wall itself, shear resistance can not only be improved, foundation pit side-wall uses common combined bolting and shotcrete compared with the prior art simultaneously, it can also achieve the purpose that reduce anchor bolt construction workload, to reduce the cost of foundation pit side-wall supporting.

Description

A kind of foundation pit side-wall structural strengthening suspension device
Technical field
The invention belongs to foundation pit side-wall reinforcement technique fields, and in particular to a kind of foundation pit side-wall structural strengthening suspension device.
Background technique
Pattern foundation pit supporting structure is the safety to guarantee Underground Construction and foundation pit surrounding environment, to foundation pit side-wall and peripheral ring Supporting and retaining system, reinforcing and the safeguard measure that border uses.The prior art is also more about the technical literature of pattern foundation pit supporting structure, such as application No. is 201720031646.5 utility model patent disclose the pattern foundation pit supporting structure that a kind of band is conducive to discharge structure, including pattern foundation pit supporting structure Plate, pattern foundation pit supporting structure intralamellar part are provided with anchor pole, and anchor pole is inserted into slope pars intramuralis, pattern foundation pit supporting structure plate and slope wall and connects by the way that anchor pole is fixed It connects, pattern foundation pit supporting structure plate side is tightly attached to Po Bishang, and the pattern foundation pit supporting structure plate other side is provided with drainpipe, and drainpipe passes through pattern foundation pit supporting structure Intralamellar part, and drainpipe is fixedly connected with pattern foundation pit supporting structure plate, drainpipe front end is provided with nylon wire, and nylon wire is wrapped in draining On the outside of pipe, pars intramuralis digging in slope has drainage trap, and nylon wire is arranged in drainage trap, and rubble, foundation pit branch are filled with inside drainage trap Backplate left end is provided with protrusion, and the setting of pattern foundation pit supporting structure plate right end is fluted, and groove and protrusion cooperate and be arranged, pattern foundation pit supporting structure Backboard portion is provided with reinforcing rib;The diameter of rubble is 3-5mm, and anchor pole and drainpipe are obliquely installed;Groove is internally provided with Rubber pad;Pattern foundation pit supporting structure plate is rectangle, and protrusion and groove are arranged in parallel in pattern foundation pit supporting structure plate two sides respectively;Reinforcing rib includes first Reinforcing rib and the second reinforcing rib, the first reinforcing rib and the second reinforcing rib are arranged in a mutually vertical manner, and the first reinforcing rib and second is reinforced Muscle is fixedly connected with pattern foundation pit supporting structure plate;First reinforcing rib and the second reinforcing rib at least provided with two groups, and the first reinforcing rib and Second reinforcing rib is that channel steel is made, and the first reinforcing rib is arranged between the second reinforcing rib of two adjacent groups.
In another example application No. is 201720348680.5 utility model patents to disclose a kind of deep pit support protection unit, packet Bored concrete pile and vertical foundation pit are included, vertical foundation pit edge preset has bored concrete pile, supporting attachment beam is fixedly connected at the top of bored concrete pile, The inside of supporting attachment beam is fixedly connected on supporting supporting beam by supporting girder, and supporting attachment beam and supporting supporting beam are solid Surely it is connected to the top of support column, the bottom end of support column is fixedly connected on the bottom of vertical foundation pit, is provided on the outside of vertical base Slope foundation pit, the bottom of slope foundation pit, which is dug, an annular gutter;Uniformly inserted with soil nailing, soil nailing in the slope surface of slope foundation pit It is vertical with slope surface, and branch mask is fixedly connected on soil nailing;Branch mask is that face is built in concrete spray, and is preset with steel in branch mask Muscle net;Bored concrete pile is uniformly distributed along the edge of vertical foundation pit, and the top of bored concrete pile is integrated towards the side of vertical foundation pit It is provided with undertaking pedestal, pedestal is accepted and is fixedly connected on supporting attachment beam;Soil normal thereto is fixedly connected on bored concrete pile Nail, soil nailing are fixedly connected with reinforcing face, and reinforcing face is to be embedded with the concrete of steel reinforcement cage to build part
Application No. is 201621209334.0 utility model patents to disclose a kind of supporting construction of foundation pit, the foundation pit of the supporting It is made of the two sides foundation pit of an intermediate foundation pit and the intermediate foundation pit two sides, and the depth of intermediate foundation pit is less than two sides foundation pit, It include: to set the foundation pile of intermediate foundation pit and the support pile of two sides foundation pit in the earthwork below the absolute altitude of intermediate base pit foundation bottom; It is provided with structure base slab at the absolute altitude of intermediate base pit foundation bottom, which mutually ties with the top of aforementioned base stake and support pile It closes;It is equipped between the opposite support pile gap of two sides foundation pit prestressed to drawing anchor cable;Extension is provided on the outside of support pile Plate;Support pile is located at the periphery of intermediate foundation pit;Hanging plate includes a plurality of expansion bolts, plural number reinforced mesh and concrete Layer, wherein the outside of every support pile is arranged in expansion bolt longitudinal gap, and is linked with reinforced mesh on the expansion bolt, The reinforced mesh region hung on the outside of the region in the adjacent support pile gap and support pile is provided with concrete layer;Support pile For solid matter support pile;Structure base slab is made of armored concrete;It is prestressed that drawing anchor cable horizontal is arranged;It is prestressed right It draws and is equipped with waist rail on the outside of the support pile at anchor cable position.
Although also more for the technical literature of pattern foundation pit supporting structure in the prior art, during Specific construction, part Pile for prestressed pipe is had in side wall around foundation pit, and the presence of pile for prestressed pipe will cause foundation pit deformation.
Summary of the invention
The present invention does not consider pile for prestressed pipe in foundation pit side-wall to foundation pit side-wall to solve existing foundation pit support device The problem of deformation influences, and a kind of foundation pit side-wall structural strengthening suspension device is provided, by technique improvement, it can be improved foundation pit side The shear resistance of wall improves the stability of pattern foundation pit supporting structure.
In order to solve the technical problem, the technical scheme adopted by the invention is that:
A kind of foundation pit side-wall structural strengthening suspension device, including the pile for prestressed pipe being embedded in foundation pit side-wall, which is characterized in that Injected hole is equipped between pile for prestressed pipe and the side slope of foundation pit side-wall, launching in injected hole has the soil protruded under foundation pit bottom surface Nail, soil nailing have poured into cement slurry in the interior gap between soil nailing and injected hole, and the cement slurry maintenance in soil nailing and injected hole is solidifying Gu integral structure is formed after and is connect by steel strand wires with pile for prestressed pipe.
It is equipped with multiple anchor poles being obliquely installed in the foundation pit side-wall, the anchor pole protrudes into the length in foundation pit side-wall from upper Under be gradually reduced.
As a kind of preferred mode of the present invention, each anchor pole is arranged in parallel.
Reinforced mesh is equipped at the side slope of the foundation pit side-wall, each anchor pole stretches out the side slope and steel mesh of foundation pit side-wall Piece connects and is injected with cement concrete layer.
What is be spaced on the reinforced mesh is provided with reinforced steel.
Multiple drainage holes are offered in the side slope of the foundation pit side-wall.
Shuting is offered on foundation pit side-wall top surface between pile for prestressed pipe and soil nailing.
Compared with prior art, the invention has the following advantages:
A kind of foundation pit side-wall structural strengthening suspension device of the invention, including the pile for prestressed pipe being embedded in foundation pit side-wall, in advance Injected hole is equipped between stress tubular pole and foundation pit side-wall side slope, launching in injected hole has the soil nailing protruded under foundation pit bottom surface, soil Cement slurry is poured into gap in nail between soil nailing and injected hole, shape after the cement slurry maintenance solidification in soil nailing and injected hole It is into a single integrated structure and connect with pile for prestressed pipe by steel strand wires.The present invention by being arranged injected hole in foundation pit side-wall, and Launched in injected hole into soil nailing and grout injection form integral structure, then by steel strand wires and itself in foundation pit side-wall Pile for prestressed pipe is connected up to the purpose of common stress, can not only improve shear resistance, while foundation pit compared with the prior art Side wall uses common combined bolting and shotcrete, additionally it is possible to achieve the purpose that reduce anchor bolt construction workload, to reduce foundation pit side-wall branch The cost of shield.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the structural schematic diagram of reinforced mesh of the invention;
Fig. 3 is the engineering plan of one embodiment of the invention;
Marked in the figure: I, foundation pit, 2, foundation pit side-wall, 3, the side slope of foundation pit side-wall, 4, pile for prestressed pipe, 5, soil nailing, 6, steel strand wires, 7, anchor pole, 8, shuting, 9, reinforced mesh, 10, drainage hole, 11, reinforced steel.
Specific embodiment
The present invention will be further described with reference to the examples below, and described embodiment is only present invention a part Embodiment is not whole embodiment.Based on the embodiments of the present invention, those skilled in the art are not making Other embodiments used obtained, belong to protection scope of the present invention under the premise of creative work.
In conjunction with attached drawing, a kind of foundation pit side-wall structural strengthening suspension device of the invention, including being embedded in foundation pit side-wall 2 Pile for prestressed pipe 4, wherein the lower end of pile for prestressed pipe 4 is located in the soil body under 1 bottom surface of foundation pit, pile for prestressed pipe 4 and foundation pit It is equipped with injected hole (being not drawn into attached drawing) between the side slope of side wall, launching in injected hole has the soil nailing protruded under 1 bottom surface of foundation pit 5, soil nailing 5 has poured into cement slurry in the interior gap between soil nailing 5 and injected hole, and the cement slurry maintenance in soil nailing and injected hole is solidifying Gu integral structure is formed after and is connect by steel strand wires 6 with pile for prestressed pipe 4.During Specific construction, the cement of injected hole After 70% that M25 intensity should be reached after slurry maintenance, steel strand wires could be passed through and connect with pile for prestressed pipe.Herein it should be noted that steel Twisted wire 6 is connected to the upper end of the soil nailing 5 in pile for prestressed pipe 4 and injected hole.
And it also requires explanation, the internal diameter of injected hole is greater than the outer diameter of soil nailing, i other words the size of soil nailing is small and infuses Starch the size in hole.Such as during Specific construction, the diameter of injected hole is 150mm, then it is 48mm, wall thickness that soil nailing, which selects diameter, For the soil nailing of 3mm, an overall structure is formed with soil nailing to pass through priming charge mud.
The effect of soil nailing is to improve shear resistance.It, can not also in injected hole according to the actual conditions of disparity items It is put into soil nailing, directly the concrete column in pile for prestressed pipe and injected hole is attached by steel strand wires, reaches common stress Purpose.
A kind of foundation pit side-wall structural strengthening suspension device of the invention, including the prestressed pipe being embedded in foundation pit side-wall Stake is equipped with injected hole between pile for prestressed pipe and foundation pit side-wall side slope, launching in injected hole has the soil protruded under foundation pit bottom surface Nail, soil nailing have poured into cement slurry in the interior gap between soil nailing and injected hole, and the cement slurry maintenance in soil nailing and injected hole is solidifying Gu integral structure is formed after and is connect by steel strand wires with pile for prestressed pipe.The present invention in foundation pit side-wall by being arranged slip casting Hole, and launch in injected hole into soil nailing and grout injection forms integral structure, then by steel strand wires and itself in foundation pit Pile for prestressed pipe in side wall is connected up to the purpose of common stress, can not only improve shear resistance, while compared to existing Technology foundation pit side-wall uses common combined bolting and shotcrete, additionally it is possible to achieve the purpose that reduce anchor bolt construction workload, to reduce base Cheat the cost of side wall supporting.
In the specific implementation process, it can also be attached by other attachments between pile for prestressed pipe 4 and soil nailing 5, It is preferential that steel strand wires is selected to be attached but in engineering construction.
Multiple anchor poles 7 being obliquely installed are equipped in the foundation pit side-wall 2, such as when the ratio of slope of the side slope 3 of foundation pit side-wall is When 1:0.6, the tilt angle of anchor pole is 15 °.The length that the anchor pole 7 protrudes into foundation pit side-wall 2 gradually subtracts under upper It is small.As a kind of preferred mode of the present invention, each anchor pole 7 is arranged in parallel.
Reinforced mesh 9 is equipped at the side slope 3 of the foundation pit side-wall, each anchor pole 7 stretches out the side slope 3 and steel of foundation pit side-wall Muscle mesh sheet 10 connects and is injected with cement concrete layer.
As a kind of preferred mode of the present invention, what is be spaced on the reinforced mesh 9 is provided with reinforced steel 11.
Multiple drainage holes 10 are offered in the side slope 3 of the foundation pit side-wall.
Wherein combined bolting and shotcrete refers to borrowing high pressure spray jetting cement concrete and squeezes into the connection of the anchor metal in foundation pit side-wall Cooperation is used to side slope and is reinforced, and combined bolting and shotcrete itself belongs to the prior art, and those skilled in the art can understand and manage Solution, details are not described herein.
Shuting 8 is offered on the top surface of foundation pit side-wall 2 between pile for prestressed pipe 4 and soil nailing 5, for preventing water Stream punching is flowed out from the side slope of foundation pit side-wall.
It is applicant in one engineering project of Chengdu in conjunction with Fig. 3, Fig. 3, entire project is one layer of basement, in Specific construction In the process, it is carried out using segmentation, uses combined bolting and shotcrete for AB sections, CD sections, DE sections, EF sections, FG sections and GH sections, remaining section uses certainly Right slope.Entire engineering is since the difficulty of construction is larger, and the cost and workload for using common combined bolting and shotcrete are very Greatly, the workload of anchor pole squeezed into will be very huge.
Therefore using injected hole and by the way of being inserted into soil nailing, and soil nailing and the pile for prestressed pipe in foundation pit side-wall are mutually interconnected It fetches and achievees the purpose that common stress, to have the function that foundation ditch strengthening supporting, compared with the prior art using common spray anchor The mode of supporting, can substantially reduce the use of anchor pole, to reduce the cost and workload of supporting.

Claims (7)

1. a kind of foundation pit side-wall structural strengthening suspension device, including the pile for prestressed pipe (4) being embedded in foundation pit side-wall (2), It is characterized in that, injected hole is equipped between the side slope (3) of pile for prestressed pipe (4) and foundation pit side-wall, is launched in injected hole and protrudes into base Cheat the soil nailing (5) under (1) bottom surface, poured into cement slurry in the gap in soil nailing (5) between soil nailing and injected hole, soil nailing with Integral structure is formed after cement slurry maintenance solidification in injected hole and is connect by steel strand wires (6) with pile for prestressed pipe (4).
2. foundation pit side-wall structural strengthening suspension device according to claim 1, which is characterized in that the foundation pit side-wall (2) Interior to be equipped with multiple anchor poles (7) being obliquely installed, the anchor pole (7) is protruded into the length in foundation pit side-wall and is gradually reduced under upper.
3. foundation pit side-wall structural strengthening suspension device according to claim 2, which is characterized in that each anchor pole (7) is mutual It is arranged in parallel.
4. foundation pit side-wall structural strengthening suspension device according to claim 1, which is characterized in that the side slope of foundation pit side-wall (3) it is equipped at reinforced mesh (9), the side slope that each anchor pole (7) stretches out foundation pit side-wall connect with reinforced mesh and is injected with water Cement concrete layer.
5. foundation pit side-wall structural strengthening suspension device according to claim 4, which is characterized in that the reinforced mesh (9) Upper interval is provided with reinforced steel (11).
6. foundation pit side-wall structural strengthening suspension device according to claim 1, which is characterized in that the side slope of foundation pit side-wall (3) multiple drainage holes (10) are offered on.
7. foundation pit side-wall structural strengthening suspension device according to claim 1 to 6, which is characterized in that be located at pre- Shuting (8) are offered on foundation pit side-wall top surface between stress tubular pole (4) and soil nailing (5).
CN201910239169.5A 2019-03-27 2019-03-27 A kind of foundation pit side-wall structural strengthening suspension device Pending CN110004938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910239169.5A CN110004938A (en) 2019-03-27 2019-03-27 A kind of foundation pit side-wall structural strengthening suspension device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910239169.5A CN110004938A (en) 2019-03-27 2019-03-27 A kind of foundation pit side-wall structural strengthening suspension device

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Publication Number Publication Date
CN110004938A true CN110004938A (en) 2019-07-12

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CN201910239169.5A Pending CN110004938A (en) 2019-03-27 2019-03-27 A kind of foundation pit side-wall structural strengthening suspension device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110805049A (en) * 2019-11-07 2020-02-18 武汉武建机械施工有限公司 Construction method of mountain slope ultra-thickness spray anchor permanent supporting structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110805049A (en) * 2019-11-07 2020-02-18 武汉武建机械施工有限公司 Construction method of mountain slope ultra-thickness spray anchor permanent supporting structure
CN110805049B (en) * 2019-11-07 2021-05-11 武汉武建机械施工有限公司 Construction method of mountain slope ultra-thickness spray anchor permanent supporting structure

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