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Title:
METHOD FOR STRENGTHENING AND LIFTING HIGH-RISE BUILDING HAVING RAFT FOUNDATION
Document Type and Number:
WIPO Patent Application WO/2020/248429
Kind Code:
A1
Abstract:
The present invention relates to a method for strengthening and lifting a high-rise building that has a raft foundation, comprising the following steps: arranging a plurality of measuring points at intervals around the outer contour of a building, and determining the lifting side of the building according to the elevation of the measuring points; distributing a plurality of reinforcement grouting holes perpendicular to a raft foundation at intervals within the range of the raft foundation, and using pressure grouting in the reinforcement grouting holes to form a reinforcement under the raft foundation; laying downwardly inclined lifting holes on the outer side of the raft foundation at two ends close to the lifting side of the building; and performing simultaneous pressure grouting in the lifting holes to lift the lifting side of the building, and controlling the lifting speed so that the elevations of two corners are finally simultaneously lifted to the same height as the elevation of corresponding corners of a non-lifting side of the building. A reinforced composite pile foundation supporting a reinforcement is formed under the reinforcement, and supports the raft foundation together with the reinforcement. The present invention has the advantages of good overall stability, controllable lifting speed and height, little damage done to a building, and the prevention of re-settling.

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Inventors:
CUI XUEDONG (CN)
WU JIGUANG (CN)
CUI TENGYUE (CN)
Application Number:
PCT/CN2019/107379
Publication Date:
December 17, 2020
Filing Date:
September 23, 2019
Export Citation:
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Assignee:
BEIJING HENGXIANG HONGYE FOUNDATION REINFORCEMENT TECH CO LTD (CN)
International Classes:
E02D35/00
Foreign References:
CN107435346A2017-12-05
CN207228186U2018-04-13
CN109083433A2018-12-25
US4906140A1990-03-06
JP2005213904A2005-08-11
Attorney, Agent or Firm:
BEIJING WEIZHENG PATENT AGENCY CO., LTD. et al. (CN)
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