CN210151702U

CN210151702U - Soft foundation reinforcing structure

Info

Publication number: CN210151702U
Application number: CN201920204669.0U
Authority: CN
Inventors: 张军辉; 李�城; 范海山; 陈智勇; 张银银; 胡健坤
Original assignee: Changsha University of Science and Technology
Current assignee: Changsha University of Science and Technology
Priority date: 2019-02-18
Filing date: 2019-02-18
Publication date: 2020-03-17
Anticipated expiration: 2029-02-18

Abstract

The description relates to the technical field of foundation treatment engineering, and discloses a soft foundation reinforcing structure, which comprises a to-be-constructed area and a supporting structure which is made of immersed tube type steel pile triangular net, wherein the to-be-constructed area mainly comprises a brick slag concrete layer, a steel bar net rack, a graded broken stone layer and a rubble reinforced layer from top to bottom. The rubble reinforcing layer is formed by pouring binder diluent into the immersed tube type steel pile and pressing rubbles in, drainage ditches communicated with the sewage sedimentation tank are dug on the peripheral side of the to-be-constructed area, and geogrid filter screens are laid on the peripheral side walls of the to-be-constructed area. The soft foundation reinforcing structure can better meet the soft foundation construction and effectively reinforce the soft foundation.

Description

Soft foundation reinforcing structure

Technical Field

The utility model relates to a ground treatment engineering technical field, more specifically say, it relates to a weak ground reinforced structure.

Background

In the engineering construction process, the soft foundation is taken as a poor foundation, and the problems of deformation, stability and the like of the foundation are considered due to low strength, poor stability and large settlement, so that the reinforcement of the soft foundation is particularly important in engineering practice. The current engineering mainly adopts a soil replacement cushion method, a drainage consolidation method, a deep stirring method and the like. However, the soil replacement bedding course method has large engineering quantity, poor economy, poor effect of the drainage consolidation method and difficult deep stirring method practice, so that the solidification of the soft foundation is a subject to be continuously researched. Meanwhile, in the practical process, the drainage channel of the soft foundation reinforcing structure is unreasonable in arrangement, water in the soft foundation cannot be effectively drained, the bearing capacity and stability of the foundation cannot be guaranteed, and the structural layer in the curing structure is complex in arrangement, so that the scheme is complex in procedure, high in construction cost and incapable of meeting the actual engineering requirements. In order to ensure the bearing capacity and stability of the soft foundation and meet the actual requirements of engineering, an effective soft foundation reinforcing structure must be adopted.

Disclosure of Invention

In view of the disadvantages of the prior art, an object of the present invention is to provide a soft foundation reinforcing structure satisfying practical engineering and to provide at least the advantages which will be described later.

In order to achieve the purpose and other advantages of the invention, the method is mainly achieved through the following technical scheme:

the construction area uses the immersed tube type steel pile triangular net as a supporting structure and mainly comprises a brick slag concrete layer, a steel bar net rack, a graded gravel layer and a rubble reinforced layer from top to bottom. The rubble reinforcing layer is formed by pouring binder diluent into the immersed tube type steel pile and pressing rubbles in, drainage ditches communicated with the sewage sedimentation tank are dug on the peripheral side of the to-be-constructed area, and geogrid filter screens are laid on the peripheral side walls of the to-be-constructed area.

The soft foundation reinforcing structure can better meet the soft foundation construction and effectively reinforce the soft foundation. Through the technical scheme, lay the rubble in treating the construction area, equipment such as press is impressed the rubble soft foundation, the rubble is impressed and is played in the foundation when reinforced to the foundation, unnecessary water is also extruded in the soft soil base, reduce the water content of soft foundation, water passes through geogrid filter screen and flows into behind the escape canal, discharge into the sewage sedimentation tank through the escape canal, in time drain away, immersed tube steel pile pours into the binder diluent and makes the rubble bond formation wholly, avoid the deformation of soft foundation and the removal of rubble, effectively improve foundation anti deformability and foundation stability.

Preferably, the immersed tube type steel piles are staggered with each other, the diameter of each immersed tube type steel pile is 20-40cm, and the longitudinal and transverse distance between the immersed tube type steel piles is set to be 60-120 cm; arranging prestressed pipe pile rows on the central line of the prestressed pipe piles before and after the prestressed pipe piles are arranged, wherein the arrangement distance is still 60-120 cm; the steel pipe piles are distributed in a triangular array.

By adopting the technical scheme, a stable triangular steel pipe pile net is convenient to form, so that a soft foundation forms a stable structure.

Preferably, the area to be constructed is spliced with a drainage channel, one end of the drainage channel extends out of the soil body and is positioned in a drainage ditch, and the drainage channel is provided with a water seepage hole.

By adopting the technical scheme, redundant water in the soft foundation is discharged, and the water content in the soft foundation is reduced.

Preferably, the drainage channel is composed of a plurality of sections of section pipes and a fire arrow drill bit, and the section pipes are in an inner and outer sleeving structure.

By adopting the technical scheme, the drainage channel forms a closed pipeline with strong integrity and is easy to insert into a soft foundation.

Preferably, the composition of the particles of the graded crushed stone layer meets the specified grading requirement, and the thickness is set to be 40-50 cm.

By adopting the technical scheme, the foundation has good functions of permeating water, diffusing stress and bearing transition, and the possibility of sinking of the soft foundation is reduced.

Preferably, the concrete layer adopts construction waste such as brick dregs after screening as coarse and fine aggregate, and the thickness is set to be 40-60 cm.

By adopting the technical scheme, the soft foundation can be reinforced while the building is fully utilized.

Preferably, the graded rubble layer and the brick slag concrete layer are provided with a steel bar net rack.

Through adopting above-mentioned technical scheme, the reinforcing bar rack can have better deformation adaptability, improves the whole tensile of soft foundation and shears the performance.

To sum up, the utility model discloses following beneficial effect has:

1. through immersed tube type steel pile triangular net, form soft foundation reinforced structure frame, effectively improve the bearing capacity of soft foundation.

2. Through the grout outlet arranged in the immersed tube type steel pile, the thick binder diluent can be sprayed, so that rubbles are bonded with each other, a stable integral structure is formed, and the shearing resistance and tensile strength of the soft foundation are enhanced.

3. The drainage channel consists of the sectional pipes and the hot spot drill bit, so that the redundant water in the soft foundation can be drained when the drainage channel is conveniently inserted into the soft foundation, the water content is effectively reduced, and the bearing capacity and the stability of the foundation are improved.

Drawings

Fig. 1 is a perspective view of the present embodiment.

Fig. 2 is a sectional view of the present embodiment.

Fig. 3 is a schematic view of a drain passage according to the present embodiment.

Detailed description of the preferred embodiments

The present invention is further described in detail below with reference to the accompanying drawings so that those skilled in the art can implement the invention by referring to the description.

The utility model provides a weak foundation reinforced structure, as shown in fig. 1 and fig. 2, is bearing structure including 2 triangular meshes of the immersed tube type steel pile of pressing into treating construction area 1, includes from last to mainly including brick sediment concrete layer 3, reinforcing bar rack 4, gradation rubble layer 5 and rubble enhancement layer 6 down. The rubble reinforcing layer 6 is formed by pouring binder diluent into the immersed tube type steel pile 2 and pressing rubbles, a drainage ditch 8 communicated with a sewage sedimentation tank 7 is dug at the peripheral side of the region 1 to be constructed, and a geogrid filter screen 9 is laid at the peripheral side wall of the region to be constructed.

Determining the arrangement position of the immersed tube type steel piles 2, wherein the diameter of each immersed tube type steel pile 2 is 20-40cm, and the longitudinal and transverse spacing between the immersed tube type steel piles 2 is set to be 80-120 cm; arranging 2 rows of immersed tube type steel piles on the central line of the immersed tube type steel piles 2 before and after arrangement, wherein the arrangement distance is still 80-120 cm; the steel piles are distributed in a triangular array to form a stable supporting structure of the soft foundation.

The method comprises the following steps of paving rubbles in a to-be-constructed area 1, pressing the rubbles into a soft foundation through a press and other mechanical equipment to enable a soil foundation to be fully compacted, extruding redundant water in the soft foundation, and discharging the water into a drainage ditch and a sewage pool 7 through a geogrid net 9 and a drainage channel 10 without re-excavating, filling and replacing, so that the construction cost is reduced, the water content in the soft foundation can be effectively degraded, and the bearing capacity of the foundation is improved.

Immersed tube type steel pile 2 sets up a plurality of grout outlets, and the binder diluent passes through injection apparatus and pours the diluent into the different degree of depth of weak ground into, makes binder diluent and rubble fully contact to strengthen the bonding between rubble, soil matrix, immersed tube type steel pile 2, form the stable main part.

The drainage channel 10 is inserted into a to-be-constructed area, a front port 103 of the drainage channel is in a fire arrow shape and is convenient to insert into a soft foundation, the drainage channel is composed of a plurality of sections of branch pipes 100, a rocket sleeve head can be assembled and disassembled, the branch pipes are in a notch sleeve joint structure 102 and are high in integrity, the drainage channel 10 is provided with a plurality of water seepage holes 101, and ends of the drainage channel extend out of the foundation and are located in drainage ditches, so that water in the soft foundation is drained more thoroughly.

And paving a graded gravel layer 5 above the foundation to the port of the immersed tube type steel pile 2, wherein the thickness of the graded gravel layer 5 is 20-40cm, paving a brick slag concrete layer 3 above the port, the thickness is 30-50cm, and arranging a reinforcing steel bar net rack 4 between layers, thereby forming an integral structure with compression resistance and tensile resistance, improving the deformation resistance and preventing the foundation from settling.

The present embodiment is to be construed as merely illustrative of the present invention and not limitative of the remainder of the disclosure in any way whatsoever, and it is to be understood that modifications and variations can be made by those skilled in the art without departing from the scope of the present invention as defined in the appended claims and their equivalents.

Claims

1. The utility model provides a weak foundation stabilization structure which characterized by: the construction method comprises the following steps that a to-be-constructed area (1) takes a triangular net of the immersed tube type steel pile (2) as a supporting structure and comprises a brick slag concrete layer (3), a reinforcing steel bar net rack (4), a graded gravel layer (5) and a rubble reinforcing layer (6) from top to bottom; the rubble enhancement layer (6) is poured into the binder diluent and is constituted with the rubble of impressing by immersed tube steel pile (2), digs escape canal (8) of establishing with sewage sedimentation tank (7) in waiting to construct regional (1) week side, waits to construct regional week side wall and lays geogrid filter screen (9).

2. The weak foundation reinforcing structure according to claim 1, wherein: a drainage channel (10) is arranged around the area (1) to be constructed, one end of the drainage channel (10) extends out of a soil body and is positioned in a drainage ditch (8), and the drainage channel (10) is provided with water seepage holes (101).

3. The weak foundation reinforcing structure according to claim 2, wherein: the drainage channel (10) is composed of a plurality of sectional pipes (100) and a fire arrow drill bit (103), and the sectional pipes (100) are provided with a notch sleeving structure (102).

4. The weak foundation reinforcing structure according to claim 1, wherein: the side wall of the immersed tube type steel pile (2) is provided with a plurality of grout outlets.

5. The weak foundation reinforcing structure according to claim 1, wherein: the brick slag concrete layer (3) adopts the brick slag soil after being screened as a thickness collection.