CN113756325A

CN113756325A - Emergency support device for foundation pit collapse

Info

Publication number: CN113756325A
Application number: CN202111036582.5A
Authority: CN
Inventors: 盛金喜; 胡盛龙; 周晓龙; 潘凤斌; 周环丽
Original assignee: Blooms Group Co ltd
Current assignee: Blooms Group Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2021-12-07

Abstract

The invention discloses a foundation pit collapse emergency support device in the field of foundation pit construction, which comprises a telescopic precast pile, a telescopic base, a telescopic bottom rod and a high-strength mud hanging net, wherein a clamping ring is arranged at the upper end of the telescopic precast pile, a connecting external thread is arranged on the surface of the lower end of the telescopic precast pile, and a connecting piece is arranged at the upper end of the telescopic precast pile; and a slurry-hanging high-strength mud blocking net which can be built quickly is arranged between the supports, so that mud can be hung strongly, and the protection capability of the support is effectively improved.

Description

Emergency support device for foundation pit collapse

Technical Field

The invention relates to the field of foundation pit construction, in particular to an emergency support device for foundation pit collapse.

Background

The foundation pit is a soil pit excavated at the design position of the foundation according to the elevation of the foundation and the plane size of the foundation. Before excavation, an excavation scheme is determined according to geological and hydrological data and the conditions of buildings nearby the site, and waterproof drainage work is performed. The person who is not excavated can use the method of putting the side slope to stabilize the earth slope, and the size of the slope is determined according to the relevant construction regulations. When a deeper foundation pit and a building adjacent to the deeper foundation pit are excavated, a foundation pit wall supporting method, a concrete-sprayed wall protecting method and a large foundation pit are used, and even an underground continuous wall and a columnar column type bored pile are used for interlocking, so that an outer soil layer is prevented from collapsing; for those who have no influence on nearby buildings, the underground water level can be reduced by a well point method, and slope releasing open cut is adopted; the urban bridge engineering foundation pit is mainly used for bearing platforms, bridge abutments and foundation expansion construction and generally comprises two types of non-supporting and supporting, wherein an important engineering or supporting structure is used as one part of a main structure, the excavation depth is more than 10 meters, the distance from an adjacent building and an important facility is within the excavation depth, and the foundation pit which needs to be strictly protected such as historical relics, modern excellent buildings, important pipelines and the like exists in the range of the foundation pit.

When the existing foundation pit supporting device is installed, the installation process is complex, the cement concrete site building and pouring are needed, time and labor are wasted, the existing foundation pit supporting device cannot be used for the emergency situation of foundation pit collapse, the support for supporting cannot be recycled, resource waste is easily caused, the dismounting is difficult, the support is left in the foundation pit, the environmental pollution is easily caused, and the improvement of the service life and the protection capability of the support is not facilitated.

Disclosure of Invention

The invention aims to provide an emergency support device for foundation pit collapse, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

emergent supporting device that sinks of foundation ditch, hang the mud net including flexible precast pile, flexible base, flexible sill bar, high strength, the upper end of flexible precast pile is provided with the card and establishes the circle, the lower extreme surface of flexible precast pile is provided with connects the external screw thread, the upper end of flexible precast pile is provided with the connecting piece, two go-between have been seted up on the surface of connecting piece.

As a further scheme of the invention: the surface of flexible precast pile scribbles waterproof coating, the surface of flexible precast pile scribbles wear-resisting coating.

As a still further scheme of the invention: a plurality of fixed orificess have been seted up on flexible base surface, the inner chamber of fixed orifices is provided with connects the internal thread.

As a still further scheme of the invention: the connecting external thread of flexible precast pile lower extreme meshes with connecting the internal thread, a plurality of connecting holes have been seted up to the inside wall of flexible base.

As a still further scheme of the invention: the connecting holes are movably connected through a telescopic bottom rod, and one side of the telescopic precast pile is provided with a hole.

As a still further scheme of the invention: the inner chamber of flexible precast pile is installed the high strength and is hung the mud net, one side fixedly connected with back shaft that mud net was hung to the high strength.

As a still further scheme of the invention: the surface of back shaft is provided with the connecting block, the lower extreme fixedly connected with a plurality of pre-buried piles of flexible base.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, on the basis of the existing foundation pit collapse supporting device, the traditional reinforced concrete on-site construction and pouring mode is not adopted for supporting and installation, but the flexible and changeable telescopic freely-assembled prefabricated column is adopted for rapidly constructing and assembling on site, the construction speed block is high in efficiency, is not limited by sites, is particularly suitable for the emergency situation of foundation pit collapse, the supporting and disassembling after use are simple and convenient, and can be recycled, so that the economic cost is reduced; and a slurry-hanging high-strength mud blocking net which can be built quickly is arranged between the supports, so that mud can be hung strongly, and the protection capability of the support is effectively improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the female connection thread of the present invention;

fig. 3 is a schematic view of a high-strength mud-hanging net connection structure according to the present invention.

In the figure: 1. a connecting member; 2. telescoping the precast pile; 3. clamping a ring; 4. connecting external threads; 5. a telescopic base; 6. connecting holes; 7. a telescopic bottom rod; 8. a fixing hole; 9. a water-resistant coating; 10. high-strength mud hanging net; 11. connecting blocks; 12. a support shaft; 13. pre-burying the pile; 14. a wear-resistant coating; 15. opening a hole; 16. a connecting ring; 17. and connecting the internal threads.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, in the embodiment of the present invention, the emergency support device for foundation pit collapse includes a flexible precast pile 2, a flexible base 5, a flexible bottom rod 7, and a high-strength mud-hanging net 10, wherein an engaging ring 3 is disposed at an upper end of the flexible precast pile 2, a connecting external thread 4 is disposed on a lower end surface of the flexible precast pile 2, a connecting member 1 is disposed at an upper end of the flexible precast pile 2, and two connecting rings 16 are disposed on a surface of the connecting member 1.

Wherein, the surface of the flexible precast pile 2 is coated with a waterproof coating 9, the surface of the flexible precast pile 2 is coated with a wear-resistant coating 14, when in use, the service life of the flexible precast pile 2 is conveniently and effectively prolonged, the surface of the flexible base 5 is provided with a plurality of fixed holes 8, the inner cavity of the fixed holes 8 is provided with a connecting internal thread 17, when in use, the support building speed block is convenient to be used, the efficiency is high, the support building speed block is not limited by sites, the support building device is particularly suitable for the emergency situation of foundation pit collapse, the connecting external thread 4 at the lower end of the flexible precast pile 2 is meshed with the connecting internal thread 17, the inner side wall of the flexible base 5 is provided with a plurality of connecting holes 6, when in use, the support building and the installation are convenient to be carried out by adopting the traditional reinforced concrete on-site building pouring mode, but the flexible and changeable assembly type precast columns which can be freely assembled are quickly built and assembled on site, the connecting holes 6 are movably connected through a flexible bottom rod 7, trompil 15 has been seted up to 2 one sides of flexible precast pile, it is simple and convenient to make strut during the use, recycle again, reduce economic cost, high strength string mud net 10 is installed to the inner chamber of flexible precast pile 2, one side fixedly connected with back shaft 12 of mud net 10 is hung to high strength, it hangs mud net 10 to be convenient for set up the thick liquid high strength of hanging that can build fast between the support during use, can hang mud by force, effectively increase the protective capacities of strutting, the surface of back shaft 12 is provided with connecting block 11, a plurality of pre-buried piles 13 of lower extreme fixedly connected with of telescopic base 5, be convenient for during the use be fixed in foundation ditch ground according to the telescopic base 5 at foundation ditch collapse scope area with the pre-buried pile 13 top.

The working principle of the invention is as follows: when in use, the telescopic base 5 is stretched to adjust the length to a proper length, the telescopic base 5 at the top of the pre-buried pile 13 is fixed on the ground of a foundation pit according to the area of the range of the subsidence of the foundation pit, the telescopic precast pile 2 is adjusted to a proper height according to the depth of the foundation pit, the telescopic precast pile 2 is fixed by the connecting ring 16 on the surface of the connecting piece 1 through the engagement and fixation of the connecting external thread 4 and the connecting internal thread 17 on the inner side wall of the fixed hole 8 arranged on the surface of the telescopic base 5, the middle connecting part is connected by the telescopic bottom rod 7, the support device does not adopt the traditional reinforced concrete on-site construction and pouring mode for support installation, but adopts the flexible and variable assembled precast columns which can be freely assembled in a telescopic way to be quickly constructed and assembled on site, the construction speed block has high efficiency, is not limited by the site, is particularly suitable for the emergency situation of the subsidence of the foundation pit, and the support after use is simple and convenient to disassemble, the mud can be recycled, the economic cost is reduced, and the mud hanging net 10 which can be quickly built and is high in mud hanging strength is arranged between the supports, so that mud can be hung strongly, and the protection capability of support is effectively improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. Emergent supporting device that sinks of foundation ditch, including flexible precast pile (2), flexible base (5), flexible sill bar (7), mud net (10) are hung to high strength, its characterized in that: the upper end of flexible precast pile (2) is provided with the card and establishes circle (3), the lower terminal surface of flexible precast pile (2) is provided with connects external screw thread (4), the upper end of flexible precast pile (2) is provided with connecting piece (1), two go-between (16) have been seted up on the surface of connecting piece (1).

2. The emergency support device for foundation pit collapse according to claim 1, wherein: the surface of the telescopic precast pile (2) is coated with a waterproof coating (9), and the surface of the telescopic precast pile (2) is coated with a wear-resistant coating (14).

3. The emergency support device for foundation pit collapse according to claim 1, wherein: a plurality of fixing holes (8) are formed in the surface of the telescopic base (5), and connecting internal threads (17) are arranged in inner cavities of the fixing holes (8).

4. The emergency support device for foundation pit collapse according to claim 1, wherein: the connecting external thread (4) and the connecting internal thread (17) at the lower end of the telescopic precast pile (2) are meshed, and a plurality of connecting holes (6) are formed in the inner side wall of the telescopic base (5).

5. The emergency support device for foundation pit collapse according to claim 4, wherein: the connecting holes (6) are movably connected through a telescopic bottom rod (7), and one side of the telescopic precast pile (2) is provided with a hole (15).

6. The emergency support device for foundation pit collapse according to claim 1, wherein: the inner chamber of flexible precast pile (2) is installed high strength and is hung mud net (10), one side fixedly connected with back shaft (12) of mud net (10) are hung to high strength.

7. The emergency support device for foundation pit collapse according to claim 6, wherein: the surface of back shaft (12) is provided with connecting block (11), the lower extreme fixedly connected with of flexible base (5) is a plurality of pre-buried stake (13).