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Foundation treatment method

A treatment method and foundation technology, applied in infrastructure engineering, water conservancy engineering, artificial islands, etc., can solve problems such as huge differences in stiffness, building cracking, uneven deformation, etc., to ensure construction quality, increase overall stiffness, and reduce unevenness. subsidence effect

Inactive Publication Date: 2014-03-12
李应芝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, these foundations have relatively high bearing capacity regardless of rock or soil. However, due to the huge difference in stiffness between the soil layer and rock, the biggest problem is that uneven deformation is prone to occur, resulting in cracking of the building.

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0014] Combined with the foundation treatment project of a construction base in Gansu, it will be further explained.

[0015] 1. Project overview

[0016] The construction site of a residential area used to be an old factory building. All the old buildings have been demolished. The site is flat and wide. Buildings 1# to 8# are two groups of large chassis and three towers, with a total height of 32.3m (10 floors) , the structure type is a short-strand shear wall structure system with a transfer layer. The soil layer of the site is uneven in thickness and different in nature. The soil layers from top to bottom are: ① Miscellaneous fill soil thickness 0.5-1.0m; ② Hard plastic clay (fak=180kpa, Es=27.5Mpa) is 1.0~1.2m thick; ③plastic clay (fak=130kpa, Es=5.5Mpa) is 0~2.2m thick, partially missing; ④soft plastic clay (fak =60kpa, Es=2.0Mpa) is 1.0-2.5m thick; ⑤flow plastic clay (fak=30kpa, Es=1.0Mpa) is 0-2.1m thick, partially absent. Below the soil layer is the bedrock, which is...

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Abstract

The invention relates to the technical field of geotechnical engineering, in particular to a foundation treatment method. The foundation treatment method is characterized in that the mattress method is adopted, slag or medium sand or coarse sand or soil doped with stones or cohesive soil is used in a soil-rock combination ground, and the thickness of the mattress layer is 300-500mm; for the soil-rock combination ground with large difference in soil thicknesses, especially the position with large difference in compression amount of the ground, the width of a settlement joint is set to be enough, when the floor of a house is 2-3, the width of the settlement joint is 50-80mm, when the floor of the house is 4-5, the width of the settlement joint is 80-120mm, and when the floor of the house is more than 5, the width of the settlement joint is no less than 120mm; the post-cast strip method is adopted in the connection portion of a high layer and a low layer, the width is no less than 500mm, and the use function and water prevention problems of buildings due to the settlement joint are avoided. According to the combination mode, the independent foundation and one-column-one-pile mode is adopted, and the construction quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a foundation treatment method. Background technique [0002] The foundation of geotechnical engineering is closely related to the safety and normal use of buildings. The subsidence of the foundation will cause hollowing and cracking of the indoor floor, and cracking and sinking of the outdoor scattered water. Problems such as uneven sedimentation. Soil-rock combination foundation is a common construction site in mountainous areas. The common soil-rock combination foundation mainly includes: the foundation with pinch-out distribution of soil layer, which is formed due to the large slope of the underlying bedrock surface; the thickness of the covering soil layer is extremely different Uniform foundation, which is caused by the unevenness of the bedrock surface; stone bud foundation, a common foundation form in limestone areas, and some stone buds may be exposed. ...

Claims

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Application Information

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IPC IPC(8): E02D27/00E02D27/12E02D29/16E02D3/08
Inventor 李应芝
Owner 李应芝
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