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A Deviation Correction Method for Local Settlement of Pile Foundation Buildings

A local settlement and building technology, applied in construction, infrastructure engineering and other directions, can solve the problems of high environmental conditions, difficult control of settlement and rectification rate, secondary damage to the superstructure of buildings, etc. Effect

Inactive Publication Date: 2020-08-25
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Among them, the forced landing rectification method has high requirements on the type of foundation soil and the surrounding environmental conditions of the building, and the settlement amount and rectification rate are not easy to control, which may easily lead to secondary uneven settlement or re-tilt; It is easy to cause secondary damage to the upper structure of the building, and due to the high self-weight of high-rise buildings, improper jacking reaction force will cause accelerated settlement of the foundation, resulting in changes in the bearing capacity of the foundation, thereby inducing secondary settlement and other hazards

Method used

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  • A Deviation Correction Method for Local Settlement of Pile Foundation Buildings
  • A Deviation Correction Method for Local Settlement of Pile Foundation Buildings
  • A Deviation Correction Method for Local Settlement of Pile Foundation Buildings

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Embodiment Construction

[0032] The idea of ​​correcting the deviation of the present invention: according to the settlement and inclination of the building, a jack cap (as a loading platform) is added to the pile with a large settlement, and the building is used as a reaction point, and the load is gradually loaded by the jack, relying on the self-weight of the building. Pile, so that the pile end is relocated to the bearing layer (that is, re-reaching the stable soil layer) to meet the later use of bearing capacity, while the jack cap is used as a counter force point to lift the building that has subsided due to collapsing and achieve the purpose of correcting the deviation. Because the self-weight of the building is used to press the pile, the present invention can not only strictly control the settlement difference of the original pile, but also ensure the subsequent bearing capacity of the original pile, and the force of each structure is reasonable during the deviation correction and reinforcement...

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Abstract

The invention relates to a deviation rectification method for local settlement of a pile foundation building. The method comprises the following step: according to the settlement inclination conditionof the building, a jack bearing platform is additionally arranged on a pile with large settlement capacity to serve as a loading platform, a building serves as a counter-force point, a jack is adopted for gradually loading in a graded mode, a pile end is made to be located on a bearing layer by pressing the pile with the self-weight of the building, the later use bearing capacity is met, meanwhile, the jack bearing platform serves as the counter-force point, the building settled due to collapsing is lifted, and the purpose of deviation rectification is achieved. The application of the invention enables the settlement volume and the inclination correction rate to be effectively and safely controlled, the bearing capacity of the pile meets the requirement of safe use after back pressure isfinished, the problems that the settlement amount and the inclination correcting speed are not easy to control, and secondary uneven settlement or re-inclination is easily caused are well solved, andmeanwhile, the problem that secondary damage is caused to an upper structure in the jacking process is also solved. The construction process is simple and convenient, particularly conforms to the force transmission principle, is safe and reliable, and is worthy of wide-range popularization and application.

Description

technical field [0001] The invention relates to the technical field of building deviation correction and reinforcement, in particular to a deviation correction method for local settlement of pile foundation buildings. Background technique [0002] With the continuous development of my country's national economy, the urbanization process in the Northwest collapsible loess area is also accelerating, and the technical level of architectural structure design, construction technology and construction management has also been greatly improved, and more and more of high-rise buildings. As the foundation entity of high-rise buildings in collapsible loess areas, the pile foundation has been widely used in the foundation engineering of high-rise buildings in collapsible loess areas because of its wide range of design options and can adapt to complex geological conditions and buildings of different scales. Applications. [0003] However, due to the particularity of the collapsible loe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D35/00
CPCE02D35/00
Inventor 朱彦鹏魏真红杨校辉杨奎斌朱乔红
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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