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Seismic box type cover structure for building liquefied foundation

A technology for liquefying foundations and buildings, which is applied in construction, infrastructure engineering, protection devices, etc., to achieve obvious effects, convenient construction, and the effect of restraining shear force

Inactive Publication Date: 2015-01-21
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems existing in existing measures and methods for eliminating ground liquefaction earthquake subsidence, the present invention provides a building liquefaction foundation anti-seismic box-type cover structure

Method used

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  • Seismic box type cover structure for building liquefied foundation
  • Seismic box type cover structure for building liquefied foundation
  • Seismic box type cover structure for building liquefied foundation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The anti-seismic box-type cover structure of the liquefied foundation of the building includes a grid-shaped mixing pile box body, and the grid-style mixing pile box box body includes reinforcement piles 1 placed under the foundation of the building's outer wall, placed Protective pile 2 under the foundation of the inner wall of the building, the bottom of the mixing pile box penetrates the liquefied soil layer of the foundation and penetrates into the non-liquefied soil layer, and a reinforcing rib waterproof cushion layer 3 is laid between the foundation surface and the top of the mixing pile box , and the top of the stirring pile box body goes deep into the reinforcing rib waterproof cushion 3; the grid-shaped stirring pile box body also includes a connecting pile 4 between the reinforcement pile 1 and the guard pile 2, and the reinforcement Pile 1 is composed of three rows of cement-soil mixing piles with a diameter of 500mm, the guard pile 2 and connecting pile 4 ar...

Embodiment 2

[0026] The anti-seismic box-type cover structure of the liquefied foundation of the building includes a grid-shaped stirring pile box body, and the grid-shaped stirring pile box box body includes reinforcement piles 1 placed under the foundation of the outer column of the building, placed Protective pile 2 under the column foundation in the building, the bottom of the mixing pile box penetrates the liquefied soil layer of the foundation and penetrates into the non-liquefied soil layer, and a reinforcing rib waterproof cushion 3 is laid between the foundation surface and the top of the mixing pile box , and the top of the stirring pile box casing goes deep into the rib waterproof cushion 3; the grid-shaped stirring pile box casing also includes a connecting pile 4 between the guard pile 2 and the guard pile 2, and the reinforcement Pile 1 is composed of three rows of cement-soil mixing piles with a diameter of 500mm, the guard pile 2 and connecting pile 4 are composed of two row...

Embodiment 3

[0028] The anti-seismic box-type cover structure of the liquefied foundation of the building includes a grid-shaped mixing pile box body, and the grid-shaped mixing pile box box body includes reinforcement piles 1 placed under the foundation of the building's outer wall, placed Protective pile 2 under the column foundation in the building, the bottom of the mixing pile box penetrates the liquefied soil layer of the foundation and penetrates into the non-liquefied soil layer, and a reinforcing rib waterproof cushion 3 is laid between the foundation surface and the top of the mixing pile box , and the top of the stirring pile box body goes deep into the reinforcing rib waterproof cushion 3; Between the connecting pile 4, the reinforcement pile 1 is composed of three rows of cement-soil mixing piles with a diameter of 500mm, and the guard pile 2 and connecting pile 4 are composed of two rows of cement-soil mixing piles with a diameter of 500mm. And the lap length c between adjace...

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Abstract

The invention relates to a building foundation structure, in particular to a seismic box type cover structure for a building liquefied foundation, which comprises a grid-type mixing pile box body, wherein the grid-type mixing pile box body comprises a reinforcement pile and a retaining pile, the reinforcement pile is arranged under a building exterior wall or an exterior column foundation, and the retaining pile is arranged under a building interior wall or an interior column foundation; the bottom of the grid-type mixing pile box body penetrates through the foundation liquefied soil into the non-liquefied soil, and a stiffener waterproof cushion ply is arranged between the foundation surface and the grid-type mixing pile box body. The seismic box type cover structure for the building liquefied foundation has the characteristics that the rigid of the foundation is improved in a horizontal direction, the shear force of the a liquefied soil layer under dynamic loads is inhibited, pore water pressure in the liquefied soil layer under dynamic loads is also inhibited from increasing, and the drainage of pore water is prevented. The seismic box type cover structure for the building liquefied foundation is suitable for liquefiable sites of buildings less than 10 floors high, and has the advantages of convenient convenience in construction, reasonable cost and obvious effect.

Description

technical field [0001] The invention relates to a building foundation structure, in particular to a building liquefied foundation anti-seismic box-type cover structure. Background technique [0002] Measures and methods commonly used in engineering design to eliminate foundation liquefaction seismic subsidence include: [0003] 1. Replace all liquefied soil layers with non-liquefied soil layers, or increase the thickness of non-liquefied soil layers. But this method is only applicable to the case of thin liquefied soil layer. [0004] 2. Use the reinforcement method (such as vibrating, vibrating densification, compacted gravel piles, etc.) forming. [0005] 3. The effect of using bottom foundation or other deep foundation treatment is obvious, but when dealing with the liquefied soil layer of buildings (structures) with low height, the cost is relatively high. Contents of the invention [0006] In order to solve the problems existing in the existing measures and meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/32E02D31/02
Inventor 韩鹏举任超郝海艳王茂桑白晓红刘新杜湧王海杰张文博齐园园刘飞姣
Owner TAIYUAN UNIV OF TECH