Settling, reinforcing and lifting method of independent foundations of existing building

Abstract

The invention discloses a settling, reinforcing and lifting method of independent foundations of an existing building, and belongs to the technical field of building foundation reinforcing and lifting. The settling, reinforcing and lifting method comprises the following steps: S1, settlement survey is conducted, specifically, all the independent foundations are subjected to settlement survey according to datum elevation points set on site, settlement data are recorded, the differential settlement is calculated, and a unified elevation line is set; S2, the foundations are stabilized, specifically, soil bodies at the bottoms of the independent foundations are subjected to grouting reinforcement treatment, and a stable area is formed; and S3, the foundations are lifted, specifically, soil bodies, close to the independent foundations, on the upper part of the stable area are grouted so as to lift the independent foundations to the unified elevation line. The settling, reinforcing and lifting method has the characteristics of high stability, high precision, easy construction and low cost.

Description

technical field [0001] The invention relates to the technical field of reinforcement and elevation of building foundations, in particular to a settlement reinforcement and elevation method for independent foundations of existing buildings. Background technique [0002] my country's loess covers a large area, mainly distributed in the eastern end of the Qilian Mountains in Gansu in the west, to the Taihang Mountains at the junction of Shanxi, Henan, and Hebei in the east, to the Qinling Mountains in Shaanxi in the south, and to the Great Wall in the north, including Shaanxi, Shaanxi, Ningxia, Gansu There are more than 220 counties and cities in five provinces including Qinghai, Qinghai, covering an area of ​​540,000 square kilometers, accounting for 6% of the country's land area. The Loess Plateau in Northwest my country is the largest Loess Plateau in the world, and the Loess Plain in North China is the largest Loess Plain in the world. [0003] Typical loess is composed of ...

AI Technical Summary

Problems solved by technology

For example, the cushion replacement method is suitable for buildings with small loads and areas lacking groundwater, and the foundation needs to be excavated, and the construction work area is large, which affects normal operation; lime-soil compaction piles are used in areas with low water content and hard geology. The compaction effect is poor; the economical efficiency of the piling method is poor, and the cost is high in the case of thick collapsible loess

In addition, the stability of the above method is not good. After the building is delivered and applied, the problem of uneven settlement of the building will still occur, resulting in varying degrees of damage to the overall structure of the building, cracking of the wall, and subsidence of the floor.

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