Cement mixing pile enclosure wall arrangement type

Abstract

The utility model provides a cement mixing pile enclosure wall arrangement type, and mainly relates to a building foundation reinforcement treatment method. A cement mixing pile enclosure wall arrangement form comprises a building bottom plate and a cement mixing pile enclosure wall. The utility model has the beneficial effects that the liquefied soil layer is placed in the closed box body through the cement mixing pile enclosing wall, and the soil body in the box body is limited in the aspects of water permeability and shear strain, so that the soil in the box body does not generate shear strain when an earthquake occurs, and the building bottom plate is used as the top of the box body, so that the structure is simple and convenient. The non-liquefied soil layer serves as the bottom of the box body, the cement mixing pile enclosure wall serves as a wall body of the closed box body, then the liquefied soil layer is kept stable, the building is kept stable, and the cement mixing pile enclosure wall is arranged in a grid shape to generate a plurality of grid spaces for stabilizing the liquefied soil layer. Furthermore, rigid piles are densely arranged in each grating space in an array manner to further reinforce the liquefied soil layer, so that the overall structure of the building foundation is more stable.

Description

Technical Field

[0001] This utility model mainly relates to a method for strengthening building foundations, specifically a cement mixing pile enclosure wall arrangement. Background Technology

[0002] With the rapid development of water conservancy projects in recent years, more and more composite foundation treatment methods have been applied to engineering projects, such as cement mixing pile composite foundations, crushed stone pile composite foundations, CFG pile composite foundations, and prestressed pipe pile composite foundations. In order to improve the bearing capacity of the foundation, and considering the problems that flexible pile composite foundations have poor replacement effect and small improvement in bearing capacity, while pile foundations have high engineering costs and also have a small improvement in bearing capacity, it is urgent to find a foundation treatment technology that can effectively improve the bearing capacity of the foundation without causing engineering waste.

[0003] Furthermore, regarding the issue of soil liquefaction in water conservancy projects, the soil liquefaction-resistant reinforcement treatment scheme should be determined through economic and technical comparisons. When the liquefied soil layer thickness is less than 3.0m, all liquefied soil layers can be replaced with non-liquefied soil; when the liquefied soil layer thickness is greater than 3.0m, foundation reinforcement treatment methods such as enclosure, dynamic compaction, vibro-compacted piles, compacted crushed stone piles, and pile foundations can be used. Considering construction, cost, and impact on surrounding buildings and the environment, cement mixing pile enclosure is the most commonly used method for treating soil liquefaction in water conservancy projects.

[0004] In summary, in special cases involving soft foundations and soil liquefaction, the optimal combination and layout of different foundation treatment schemes directly impacts project investment, construction progress, and the quality of foundation reinforcement. Therefore, it is crucial to save on project investment and construction time while ensuring project quality. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a cement-mixing pile enclosure wall arrangement. The main effect is that the cement-mixing pile enclosure wall places the liquefiable soil layer within a sealed enclosure. The soil within the enclosure is restricted in terms of water permeability and shear strain, thus ensuring that the soil within the enclosure does not experience shear strain during an earthquake. The building's foundation slab serves as the top of the enclosure, the non-liquefiable soil layer as the bottom, and the cement-mixing pile enclosure wall as the walls of the sealed enclosure. This maintains the stability of the liquefied soil layer and consequently, the stability of the building. The cement-mixing pile enclosure wall is arranged in a grid-like pattern, creating multiple grid spaces that stabilize the liquefied soil layer. Furthermore, rigid piles are densely arrayed within each grid space to further reinforce the liquefied soil layer, making the overall structure of the building foundation more stable.

[0006] To achieve the above objectives, this utility model employs the following technical solution:

[0007] A cement mixing pile enclosure wall arrangement includes a building base slab and a cement mixing pile enclosure wall. The cement mixing pile enclosure wall is arranged in a grid shape at the bottom of the building base slab, and a plain concrete cushion layer is filled between the building base slab and the cement mixing pile enclosure wall.

[0008] The top of the enclosure wall grid of the cement mixing pile is fixedly provided with a mattress layer, and pile caps are arranged in an array at the bottom of the mattress layer, with a rigid pile fixedly provided at the bottom of each pile cap.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. The liquefiable soil layer is enclosed in a sealed box by a cement-mixing pile retaining wall. The soil inside the box is restricted in terms of water permeability and shear strain, thus ensuring that the soil inside the box does not experience shear strain during an earthquake. The building's foundation slab acts as the lid of the box, the non-liquefiable soil layer as the bottom, and the cement-mixing pile retaining wall as the wall of the sealed box, thereby maintaining the stability of the liquefiable soil layer and thus the stability of the building.

[0011] 2. The cement mixing pile enclosure wall is arranged in a grid pattern to create multiple grid spaces that stabilize the liquefied soil layer. Rigid piles are then densely arranged in an array within each grid space to further reinforce the liquefied soil layer, making the overall structure of the building foundation more stable. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of this utility model;

[0014] Figure 3 This is a cross-sectional structural schematic diagram of the present invention;

[0015] Figure 4 This is a schematic diagram of the rigid pile structure of this utility model;

[0016] Figure 5 This is a schematic diagram of the cement mixing pile enclosure wall structure of this utility model.

[0017] The labels shown in the attached diagram are: 1. Building base slab; 2. Cement mixing pile enclosure wall; 3. Plain concrete cushion layer; 4. Mattress layer; 5. Pile cap; 6. Rigid pile. Detailed Implementation

[0018] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0019] Example: A type of cement mixing pile enclosure wall layout

[0020] like Figure 1-5 As shown, a cement mixing pile enclosure wall arrangement includes the following specific structural features:

[0021] A cement-mixing pile enclosure wall arrangement includes a building base slab 1 for supporting buildings on the ground, and a cement-mixing pile enclosure wall 2 for supporting the building base slab 1 below ground. The cement-mixing pile enclosure wall 2 is arranged in a grid shape at the bottom of the building base slab 1 to form a box that encloses the liquefiable soil layer to prevent the liquefied soil layer from generating shear strain during earthquakes or other events, thereby affecting the stability of the building base slab 1. A plain concrete cushion layer 3 is filled between the building base slab 1 and the cement-mixing pile enclosure wall 2 to separate and connect the building base slab 1 and the cement-mixing pile enclosure wall 2, thereby preventing the liquefied soil layer from contacting and seeping into the building base slab 1.

[0022] A mattress layer 4 is fixedly installed at the top inside the grid of the cement mixing pile enclosure wall 2 to connect the rigid piles 6 and further seal the top of each of the cement mixing pile enclosure wall 2 grids. Pile caps 5 are arranged in an array at the bottom of the mattress layer 4, and rigid piles 6 are fixedly installed at the bottom of each pile cap 5. The rigid piles 6 arranged in an array inside the grid of the cement mixing pile enclosure wall 2 are inserted into the liquefiable soil layer inside the grid of the cement mixing pile enclosure wall 2 to further reinforce the building base slab 1 and the cement mixing pile enclosure wall 2 and improve the stability of the device.

[0023] Working principle:

[0024] By setting a grid-like structure formed by cement-mixing pile enclosure wall 2 below ground level, with the bottom extending at least 0.5m into the non-liquefiable soil layer, the building's foundation slab serves as the top of the box-like structure, the non-liquefiable soil layer as the middle, and the cement-mixing pile enclosure wall as the walls of the sealed box. The liquefiable soil layer is placed within the grid formed by the cement-mixing pile enclosure wall 2 to stabilize it. Furthermore, rigid piles 6 are densely arrayed inside the grid of the cement-mixing pile enclosure wall 2 and inserted into the liquefied soil layer within the grid to further reinforce the building's foundation slab 1 and the cement-mixing pile enclosure wall 2, thereby enhancing the stability of the device. The specific implementation steps are as follows:

[0025] 1. Excavate the foundation to the building surface;

[0026] 2. Construct the enclosure wall according to the positioning dimensions of the cement mixing pile enclosure wall, and conduct continuity testing of the enclosure wall;

[0027] 3. Seven days after the construction of the enclosure wall, rigid piles will be constructed within the grid formed by the enclosure wall;

[0028] 4. After the rigid piles are constructed, single pile bearing capacity and composite foundation bearing capacity tests shall be conducted according to the design requirements;

[0029] 5. After the test results meet the design requirements, construct the rigid pile cap. Once the concrete strength of the pile cap reaches 70%, backfill with a cushion layer of the same thickness as the pile cap. Then, proceed with the plain concrete construction.

[0030] 6. Tie the reinforcing steel bars of the building's foundation slab and carry out floor construction.

[0031] In explaining this utility model, it should be noted that the terms indicating location are only for ease of description and understanding, and are not intended to limit the installation location of specific technical features. Other possible installation methods are not excluded.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A type of cement mixing pile enclosure wall arrangement, comprising a building base slab (1) and a cement mixing pile enclosure wall (2), characterized in that: The cement mixing pile enclosure wall (2) is arranged in a grid shape at the bottom of the building base plate (1), and a plain concrete cushion layer (3) is filled between the building base plate (1) and the cement mixing pile enclosure wall (2).

2. The arrangement of a cement mixing pile enclosure wall according to claim 1, characterized in that: The top of the grid of the cement mixing pile enclosure wall (2) is fixedly provided with a mattress layer (4), and the bottom of the mattress layer (4) is densely provided with pile caps (5) in an array, and each pile cap (5) is fixedly provided with a rigid pile (6) at the bottom.

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