Rectification design and construction of a high-rise building
QIN Yun1,2, XIE Zhi-yong1, WANG Wen-yuan3, LUO Hao3, CHEN Chang-shuai3
1. Yunnan university, 650000, Kunming, China; 2. Kunming Architecture Design & Research Group Ltd., 650000, Kunming, China;
3.China Construction Second Engineering Bureau Ltd., 100160, Beijing, China
Abstract：
There was one high rise building with a raft foundation whose inclination rate was more than 1% in Kunming, the settlement was still unstable and that needed to be rectified. Thus, in the rectification design and constructing, the following factors were studied such as foundation underpinning, determination of the rectification jacking, construction preparation, safety control, measures of the construction process, determination of the lifting device, lifting target, jacking construction process control, lifting process and etc.. Also the problem of quantity correction was discussed. Compared with the traditional rectification, the requirement of eliminating the internal stresses in the structural rectification was put forward, and the corresponding control measures were expounded. The practice of correcting the rectification of the high-rise building by the computer controlled linkage jack system for the first time in Yunnan Province was successful.
