Anti-frost heaving and anti-seismic composite foundation structure

A composite foundation, anti-frost heave technology, applied in the field of foundation anti-freeze and earthquake resistance, can solve the problems of economic loss and safety hazards, accelerated building collapse, high earthquake disaster intensity, etc. The effect of preventing and controlling frost heave deformation and damage

Pending Publication Date: 2020-07-03
BAICHENG NORMAL COLLEGE
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country's permafrost areas are widely distributed, and a large number of buildings are built on foundations with severe frost heave. Failure to adopt effective frost heave prevention and control measures causes deformation and damage, which brings huge economic losses and safety hazards. obstacle
At the same time, my country is located in the Pacific Rim and the Eurasian seismic belt, and the intensity of earthquake disasters is large and frequent. The traditional seismic design adopts the design method to improve the strength, ductility, and stiffness of the structure. The seismic energy is consumed by the structure, often resulting in concrete cracking and steel yielding. question
In the event of a rare strong earthquake, although excessive acceleration and interstory displacement cannot cause the building to collapse, it cannot operate normally

Method used

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  • Anti-frost heaving and anti-seismic composite foundation structure

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Effect test

Embodiment 1

[0021] Such as figure 1 As shown, a frost heaving and anti-seismic composite foundation structure, including a plurality of rigid cap piles, coarse sand cushion, rubber gravel reinforced cushion, rubber shock-isolation cushion and raft, is uniformly arranged in the foundation soil with multiple A rigid hat-type pile, the coarse sand cushion is located on the top of the foundation soil, the rubber gravel reinforced cushion is located on the above the coarse sand cushion, and the rubber shock-absorbing cushion is located on the above the rubber gravel reinforced cushion The raft is located above the rubber shock-absorbing cushion, the coarse sand cushion, the rubber gravel reinforced cushion and the rubber shock-isolation cushion are provided with baffles, and the building is built on the raft. The rigid cap pile includes a pile cap and a pile body, the upper end of the pile body is hingedly connected with the pile cap, and the lower end of the pile body is located in the bearin...

Embodiment 2

[0024] The construction method of a kind of anti-frost heaving and anti-seismic composite foundation structure described in embodiment 1, the steps are as follows:

[0025] Step 1, prefabricated pile body and pile cap, raft, baffle;

[0026] Step 2, drive the prefabricated pile body into the foundation soil, the lower end of the pile body is in the bearing layer, and the upper end of the pile body is hinged with the mushroom-shaped pile cap, and a plurality of rigid hat-type piles are symmetrically arranged according to the center;

[0027] Step 3: Arrange a circle of prefabricated baffles around the surrounding area. The baffles are buried in the soil at a depth of 20-40mm and are 20-40mm higher than the top of the cushion;

[0028] Step 4, laying a layer of coarse sand cushion with a thickness of 1-1.5m.

[0029] Step 5: Mix rubber and pebbles or crushed stones evenly at a ratio of 1-2:2, lay a 1 / 2 thickness rubber gravel cushion, lay a wave-shaped geogrid, and then lay a 1...

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Abstract

The invention discloses an anti-frost heaving and anti-seismic composite foundation structure. The anti-frost heaving and anti-seismic composite foundation structure includes a plurality of rigid captype piles, a coarse sand cushion layer, a rubber pebble stiffened cushion layer, a rubber quake isolation cushion layer and a raft plate, the multiple rigidity cap type piles are evenly arranged in foundation soil, the coarse sand cushion layer is positioned on the foundation soil, the rubber pebble stiffened cushion layer is located on the coarse layer, the rubber quake isolation cushion layer is located on the rubber pebble stiffened cushion layer, the raft plate is located on the rubber quake isolation cushion layer, a blocking plate is placed on the periphery of the coarse sand cushion layer, the rubber pebble stiffened cushion layer, and the rubber quake isolation cushion layer, a building is built on the raft plate. The foundation structure can effectively prevent the foundation frost heave and the earthquake damage deformation and fracture under earthquake in a cold area, improve the mechanics performance of the foundation structure; effectively lower or avoid the enormous economic loss caused by the earthquake and the freezing damage.

Description

technical field [0001] The invention belongs to the field of anti-freezing and anti-seismic foundation, and in particular relates to a composite foundation structure for anti-frost heaving and anti-seismic. Background technique [0002] my country's permafrost areas are widely distributed, and a large number of buildings are built on foundations with severe frost heave. Failure to adopt effective frost heave prevention and control measures causes deformation and damage, which brings huge economic losses and safety hazards. obstacle. At the same time, my country is located in the Pacific Rim and the Eurasian seismic belt, and the intensity of earthquake disasters is large and frequent. The traditional seismic design adopts the design method to improve the strength, ductility, and stiffness of the structure. The seismic energy is consumed by the structure, often resulting in concrete cracking and steel yielding. question. When a rare strong earthquake occurs, although excessiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/34E02D27/35E02D31/08E02D31/00E02D3/00
CPCE02D3/005E02D27/34E02D27/35E02D31/00E02D31/08E02D2300/0084
Inventor 史晓星汪莉赵莹莹
Owner BAICHENG NORMAL COLLEGE
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