A pipe jacking building wall structure and its construction method

Abstract

The present invention provides a pipe jacking building wall structure and a construction method thereof, including a foundation pit layer, a prefabricated layer disposed on one side of the foundation pit layer, and a structural layer. A number of pipe jacking retaining piles are provided at intervals on one side of the foundation pit layer. The prefabricated layer is disposed on the side of the foundation pit layer close to the pipe jacking retaining piles and is spaced from the foundation pit layer. The prefabricated layer is arranged side by side with the foundation pit layer, and the lower end surface of the prefabricated layer is connected to the upper end surface of the structural layer; the structural layer is perpendicular to the foundation pit layer and is located directly below the prefabricated layer; a filling layer is further provided between the foundation pit layer and the prefabricated layer. The pipe jacking building wall structure of the present invention has a simple structure and is easy to construct, with good construction quality. It can realize the recycling of prefabricated layer components, save building materials, has good construction effects, can also achieve environmental protection, and at the same time can shorten the construction period and improve work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of municipal pipeline engineering construction, and particularly relates to a pipe jacking building wall structure and a construction method thereof. Background Art

[0002] With the increasing intensity of the upgrading and development of municipal infrastructure, the application of the pipe jacking construction technology for municipal pipelines is becoming more and more extensive. At present, the jack back wall in the pipe jacking well foundation pit mostly adopts a cast-in-place concrete structure. This structure requires the pipe jacking construction to be carried out after the concrete reaches the design strength, and it is abandoned after the pipe jacking is completed. This construction method not only wastes building materials, but also seriously affects the construction period, and it is extremely easy to damage the local environment after its demolition. Summary of the Invention

[0003] The invention provides a pipe jacking building wall structure, which solves the technical problems of serious material waste, long construction period and high production cost caused by the cast-in-place concrete structure in the prior art. The invention can not only realize the recycling of precast layer components, save building materials, have good construction effects, but also realize environmental protection, shorten the construction period and improve work efficiency at the same time.

[0004] In order to solve the above technical problems, the technical scheme adopted by the invention is as follows:

[0005] A pipe jacking building wall structure includes a foundation pit layer, a precast layer and a structural layer arranged on one side of the foundation pit layer. A plurality of pipe jacking retaining piles are arranged at intervals on one side of the foundation pit layer. The precast layer is arranged on the side of the foundation pit layer close to the pipe jacking retaining piles and is spaced from the foundation pit layer. The precast layer is arranged side by side with the foundation pit layer, and the lower end surface of the precast layer is connected to the upper end surface of the structural layer; the structural layer is perpendicular to the foundation pit layer and is located directly below the precast layer; a filling layer is also arranged between the foundation pit layer and the precast layer.

[0006] Further, the thickness of the filling layer is not less than 50 mm.

[0007] Further, a framework layer is arranged on the side of the precast layer away from the foundation pit layer. The framework layer includes a plurality of spliced steel plates.

[0008] Further, adjacent steel plates are connected and fixed by bolts.

[0009] Further, a plurality of connecting pieces are arranged on the framework layer. The connecting pieces sequentially penetrate through the framework layer and the precast layer.

[0010] Further, each connecting piece includes a plurality of bolts. Adjacent bolts are connected by a coupler. A nut matching with the bolt is arranged on the side of the bolt protruding from the side of the framework layer away from the precast layer.

[0011] Further, one end of the bolt placed in the precast layer is a bent structure, and the bent structure is an L shape.

[0012] Further, the foundation pit layer is an earthwork structure layer.

[0013] Further, both the precast layer and the structure layer are concrete structure layers; the filling layer is a fine aggregate concrete structure layer.

[0014] A construction method for a pipe jacking building wall structure, using the pipe jacking building wall structure as described above, the steps are as follows:

[0015] S1: Set a plurality of pipe jacking retaining piles arranged at intervals on the same side of the foundation pit layer;

[0016] S2: Excavate an earth pit on the side of the foundation pit layer close to the pipe jacking retaining pile and along the height direction of the pipe jacking retaining pile from top to bottom to a set depth;

[0017] S3: Set the structure layer perpendicular to the lower end face of the set depth of the foundation pit layer;

[0018] S4: Set the precast layer on the side of the foundation pit layer close to the pipe jacking retaining pile, and the precast layer is set perpendicular to the upper end face of the structure layer;

[0019] S5: Set a framework layer outside the precast layer, and connect the framework layer and the precast layer into one body through the connecting piece;

[0020] S6: Pour fine aggregate concrete between the foundation pit layer and the precast layer to form the filling layer.

[0021] Compared with the prior art, the pipe jacking building wall structure of the present invention has a simple structure and is easy to construct, with good construction quality, can realize the recycling of precast layer components, save building materials, has good construction effects, and can also protect the environment. At the same time, the construction period can be shortened and the work efficiency can be improved. Description of the Drawings

[0022] Figure 1 is a schematic structural view of a prefabricated and assembled background wall according to an embodiment of the present invention;

[0023] Figure 2 is a top view of a prefabricated and assembled background wall according to an embodiment of the present invention;

[0024] Figure 3 is a side view of a prefabricated and assembled background wall according to an embodiment of the present invention.

[0025] In the figure:

[0026] 10. Foundation pit layer, 20. Jacking pipe retaining pile, 30. Prefabricated layer

[0027] 40. Structural layer, 50. Filling layer, 60. Framework layer

[0028] 70. Bolt, 80. Connector Specific implementation mode

[0029] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] This embodiment provides a jacking pipe building wall structure, as Figures 1-3 shown, including a foundation pit layer 10, a prefabricated layer 30 and a structural layer 40 arranged on one side of the foundation pit layer 10. A number of jacking pipe retaining piles 20 are arranged at intervals on one side of the foundation pit layer 10. The jacking pipe retaining piles 20 are vertically arranged and the inside thereof is used for placing jacking pipes. The spacing distance of the jacking pipe retaining piles 20 can be set according to actual situations and will not be specifically described here. The foundation pit layer 10 is an earthwork structural layer, and the space between adjacent jacking pipe retaining piles 20 is filled with earthwork. The prefabricated layer 30 is arranged on the side of the foundation pit layer 10 close to the jacking pipe retaining piles 20 and is arranged at intervals with the foundation pit layer 10. The prefabricated layer 30 is arranged side by side with the foundation pit layer 10, and the lower end surface of the prefabricated layer 30 is connected to the upper end surface of the structural layer 40; the structural layer 40 is perpendicular to the foundation pit layer 10 and is located directly below the prefabricated layer 30. A filling layer 50 is further arranged between the foundation pit layer 10 and the prefabricated layer 30, and the thickness of the filling layer 50 is not less than 50 mm.

[0031] Furthermore, a framework layer 60 is arranged on the side of the prefabricated layer 30 away from the foundation pit layer 10. The framework layer 60 includes a number of spliced steel plates, and adjacent steel plates are connected and fixed by bolts 70. The steel plate structures can be the same or different. The bolts 70 are mainly arranged at the splicing seams between adjacent steel plates, and the number of bolts 70 can be determined according to actual situations and will not be specifically limited here.

[0032] Furthermore, a number of connectors 80 are arranged on the framework layer 60. The connectors 80 penetrate through the framework layer 60 and the prefabricated layer 30 in sequence. The connectors 80 are mainly arranged at the outer edges and connection points of the framework layer 60. Each connector 80 includes a number of bolts, and adjacent bolts are connected by a coupler. Most of the bolts are mainly embedded in the prefabricated layer 30. On the side of the framework layer 60 away from the prefabricated layer 30, there are some bolts protruding outward. The bolts cooperate with nuts on the side of the framework layer 60 away from the prefabricated layer 30. Furthermore, the end of the bolt embedded in the prefabricated layer 30 is a bent structure. Preferably, the bent structure of the bolt at one end in the prefabricated layer 30 is an L shape, which increases the connection strength between the prefabricated layer 30 and the framework layer 60 and improves the overall stability of the jacking pipe building wall structure.

[0033] In this embodiment, the foundation pit layer 10 is an earthwork structure layer; the prefabricated layer 30 and the structure layer 40 are both concrete structure layers; and the filling layer 40 is a fine stone concrete structure layer.

[0034] A construction method of a pipe jacking building wall structure, using the pipe jacking building wall structure as described above, comprises the following steps:

[0035] S1: a plurality of jacking pipe retaining piles 20 are arranged at intervals on the same side of the foundation pit layer 10 , that is, the construction of the foundation pit layer 10 is carried out in the working well around the jacking pipe retaining piles 20 .

[0036] S2: excavating the earthwork pit layer by layer from top to bottom to a set depth on one side of the foundation pit layer 10 close to the jacking pipe retaining pile 20 and along the height direction of the jacking pipe retaining pile 20.

[0037] S3: After excavation reaches a set depth, a concrete structure is poured on the lower end surface of the earthwork pit perpendicular to one side of the foundation pit layer 10 as soon as possible to form a structural layer 60.

[0038] S4: Soil is then cleaned on the surface of the pit layer 10 near the top pipe retaining pile 20, and a prefabricated layer 30 is set on one side of the cleaned pit layer 10, and the prefabricated layer 30 is set perpendicular to the upper end surface of the structural layer 60. Check the control line during installation; the prefabricated layer 30 is hoisted and installed in blocks, and the prefabricated layer 30 and the pit layer 10 are arranged side by side, and the gap between the prefabricated layer 30 and the pit layer 10 is not less than 50mm; the position, verticality and splicing gap of the prefabricated layer 30 are checked during the installation process.

[0039] S5: a frame layer 60 is arranged outside the prefabricated layer 30 , and the frame layer 60 and the prefabricated layer 30 are connected together by a connecting member 80 .

[0040] S6: Fine stone concrete is poured between the foundation pit layer 10 and the prefabricated layer 30 to form a filling layer 50. When the fine stone concrete of the filling layer 50 reaches a preset strength, the pipeline jacking work can be carried out.

[0041] Compared with the prior art, the pipe-jacking building wall structure of the present invention has a simple structure and is easy to construct, has good construction quality, can realize the recycling of prefabricated layer components, save building materials, has good construction effect, and can also protect the environment, while shortening the construction period and improving work efficiency.

[0042] The above embodiments of the present invention are described in detail, and the contents are only preferred embodiments of the present invention, and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of application of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A pipe jacking building wall structure, characterized in that, It includes a foundation pit layer, a precast layer disposed on one side of the foundation pit layer, and a structural layer. There are a number of pipe jacking retaining piles arranged at intervals on one side of the foundation pit layer. The precast layer is disposed on the side of the foundation pit layer close to the pipe jacking retaining piles and is spaced from the foundation pit layer. The precast layer is arranged side by side with the foundation pit layer, and the lower end surface of the precast layer is connected to the upper end surface of the structural layer. The structural layer is perpendicular to the foundation pit layer and is located directly below the precast layer. A filling layer is also provided between the foundation pit layer and the precast layer. On the side of the precast layer away from the foundation pit layer, there is a framework layer, and the framework layer includes a number of spliced steel plates. Adjacent steel plates are connected and fixed by bolts. There are a number of connecting pieces on the framework layer. Each connecting piece includes a number of bolts. The bolts connecting adjacent steel plates are connected through a coupler. The bolts on the connecting piece protrude from the side of the framework layer away from the precast layer and are provided with nuts matching them.

2. The pipe jacking building wall structure according to claim 1, characterized in that, The thickness of the filling layer is not less than 50 mm.

3. The pipe jacking building wall structure according to claim 1 or 2, characterized in that, The connecting pieces sequentially penetrate through the framework layer and the precast layer.

4. The pipe jacking building wall structure according to claim 3, characterized in that, The bolts on the connecting piece at one end placed in the precast layer are of a bent structure, and the bent structure is an L shape.

5. A pipe jacking building wall structure according to any one of claims 1-2 and 4, characterized in that, The foundation pit layer is an earthwork structural layer.

6. The pipe jacking building wall structure according to claim 5, characterized in that, The precast layer and the structural layer are both concrete structural layers; the filling layer is a fine aggregate concrete structural layer.

7. A construction method for the wall structure of a pipe jacking building, characterized in that, Adopt the pipe jacking building wall structure as described in any one of 1 - 6, and the steps are as follows: S1: Set a number of pipe jacking retaining piles arranged at intervals on the same side of the foundation pit layer. S2: On the side of the foundation pit layer close to the pipe jacking retaining piles and along the height direction of the pipe jacking retaining piles, excavate an earth pit from top to bottom to a set depth. S3: Set the structural layer perpendicular to the foundation pit layer at the lower end surface of the set depth. S4: Set the precast layer on the side of the foundation pit layer close to the pipe jacking retaining piles, and the precast layer is set perpendicular to the upper end surface of the structural layer. S5: Set the framework layer outside the precast layer, and connect the framework layer and the precast layer into one body through the connecting pieces. S6: Pour fine aggregate concrete between the foundation pit layer and the precast layer to form the filling layer.

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