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Horizontal directional preloading device and implementation method for buried cap foundation soil

A technology with horizontal orientation and implementation method, applied in soil protection, infrastructure engineering, construction, etc., can solve problems such as performance improvement that has not yet been carried out, and achieve the effect of convenient implementation, simple manufacturing, and improved safety reserve

Active Publication Date: 2021-06-25
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, although designers in related industries in my country realize that the foundation soil of the side wall of the buried cap can bear part of the load, they have not carried out research on efficient and quick performance improvement measures

Method used

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  • Horizontal directional preloading device and implementation method for buried cap foundation soil
  • Horizontal directional preloading device and implementation method for buried cap foundation soil
  • Horizontal directional preloading device and implementation method for buried cap foundation soil

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Embodiment approach

[0033] This embodiment also discloses a method for implementing the above-mentioned horizontal directional preloading device for foundation soil of the buried cap, including the following steps:

[0034] (1) Determine the size of the bottom plate 11 according to the target side wall size of the buried cap 100 in the horizontal force direction;

[0035] (2) Determine the size of the grouting bladder 10 according to the design precompression amount of the foundation soil and the size of the base plate 11;

[0036] (3) Assemble the prefabricated grouting pocket 10, bottom plate 11, grouting one-way valve 12 and grouting one-way valve 13, and seal the connection; compress and fold the grouting pocket 10 and lay it flat fixed on the surface of the bottom plate 11 to form a complete grouting extrusion device 1;

[0037](4) During the construction of the bearing platform, first bury the grouting pipe 4 and the grouting pipe 5. When burying, determine the position of the outlet port ...

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Abstract

The invention discloses a horizontally directional preloading device and an implementation method for foundation soil of an embedded cap platform, belonging to the technical field of bridge engineering. It squeezes the foundation soil of the side wall of the buried cap through the grouting extrusion device, which not only expands the horizontal interaction force area between the buried cap and the foundation soil, but also realizes the improvement of the foundation of the side wall of the cap. Soil preload strengthening treatment enables the foundation soil to provide high level resistance under the condition of small compression deformation, and achieve the goal of improving the safety reserve of the pile group foundation. The directional preloading device provides a new way of thinking for the performance improvement of various buried cap pile foundations and buried block foundation caps, which not only enhances the safety reserve of the foundation, but also enhances the horizontal resistance of the subsequent caps. It lays the foundation for the application of the application, and has very important engineering promotion value for the design and safe application of the horizontal bearing performance of pile group foundations in bridge engineering in my country.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a horizontally directional preloading device and an implementation method for buried cap foundation soil. Background technique [0002] Due to the advantages of large horizontal rigidity and strong anti-overturning ability, the buried cap pile group foundation is the preferred foundation type for carrying the upper structure to transmit horizontal force in bridge engineering. When the horizontal force acts, the transmission of the upper load to the pile foundation is realized through the stiffness distribution relationship between the cap and the pile foundation, so as to achieve the purpose of bearing the horizontal force of the pile group foundation. However, in the above load distribution process, the horizontal resistance of the foundation soil on the side wall of the buried cap is ignored, which makes the design of the pile foundation conservative, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/12E02D27/14E02D3/12
CPCE02D3/12E02D27/12E02D27/14
Inventor 竺明星王博臣龚维明王洋戴国亮张志彤
Owner SOUTHEAST UNIV
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