Foundation reinforcing and deviation rectifying method

A foundation reinforcement and foundation technology, applied in the direction of foundation structure engineering, foundation structure repair, soil protection, etc., can solve the problems of disturbing the base soil, aggravating the foundation settlement, and the reinforcement effect is difficult to achieve the expected goal, etc. The effect of strengthening stiffness

CN111779045AActive Publication Date: 2020-10-16GUANGZHOU URBAN PLANNING & DESIGN SURVEY RES INST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-10-16

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Abstract

The invention relates to the technical field of foundation construction, and discloses a foundation reinforcing and deviation rectifying method. The method comprises the following steps that anchor rod steel bars are implanted around a first pile hole, an anchor rod static pressure steel pipe pile is constructed, a deep soil body is repeatedly subjected to extruding and grouting through the steelpipe pile, and after grouting is completed, a pressurizing assembly is installed and the steel pipe pile is temporarily locked; and a second pile hole is formed in a foundation ground to be constructed, a grouting steel pipe is inserted into the second pile hole, the grouting steel pipe conducts local directional reinforcing on a shallow soil body in a repeated grouting mode as well, a pressure value of the steel pipe pile is monitored in the grouting process, and gradual re-pressing is conducted on the steel pipe pile through the pressurizing assembly, so that slow reinforcing and lifting ofa settled soil layer and deviation rectifying of a foundation are achieved. According to the method, through repeated multi-time multi-point grouting of the deep soil body and the shallow soil body and gradual re-pressing of the steel pipe pile, the settled soil layer is slowly reinforced and lifted, directional deviation rectifying is conducted on the foundation, uneven settlement and overall building inclination that have occurred can be effectively reduced or eliminated, and reinforcing and deviation rectifying are combined.
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Description

technical field

[0001] The invention relates to the technical field of foundation construction, in particular to a foundation reinforcement and deviation correction method. Background technique

[0002] At present, there are many ways to strengthen the foundation of buildings, including pile foundation underpinning method, tree root pile method, base grouting method, etc., and mature design and construction methods have been formed, but the above methods can only strengthen the strength and rigidity of the foundation. Controlling the settlement after foundation construction cannot effectively reduce the difference in settlement between piles, and can not make directional and reasonable corrections to the overall or partial inclination of the building that has occurred, so that it can be restored to its original position and meet the requirements of national standards. Especially when limited by the conditions of the construction site and the weak strength of the original fou...

Examples

Embodiment Construction

[0035] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or positional relationship. Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invent...