Rectifying and Strengthening Method for Pile Foundation of High-rise Building and Engineering Practice(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2018年03期
- Page:
- 87-94
- Research Field:
- Publishing date:
Info
- Title:
- Rectifying and Strengthening Method for Pile Foundation of High-rise Building and Engineering Practice
- Author(s):
- ZHU Yan-peng; WANG Hai-ming; YANG Kui-bin; YANG Xiao-hui
- Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology
- Keywords:
- pile foundation; high-rise building; rectifying and reinforcement; supplement raft; static bolt pile
- PACS:
- -
- DOI:
- -
- Abstract:
- Aiming at a differential settlement accident engineering of certain 99.9 meter high-rise buildings with pile foundation, in order to not only reduce the foundation’s compression and preferably intensify the whole rigidity of building foundation, but also stop settlement and resist uneven settlement, combining with the characteristics of the high-rise building structure and geological conditions, the method of “supplement raft + broaden the external raft + the static bolt pile” was proposed based on the thinking of intensifying the foundation’s rigidity and stopping settlement and regulate balance. The method was verified by test data analysis. The results show that it is feasible to scheme of comprehensive inclination rectification and reinforcement with the technology of “supplement raft + broaden the external raft + the static bolt pile”. For excessive settlement and large uneven settlement of high-rise buildings, with the technology of “supplement raft + broaden the external raft + the static bolt pile”, the pile foundation will change into raft pile composite foundation, which can improve the intensity and the bearing capacity of foundation. The static bolt pile’s locations, quantity and construction order can be used to create the conditions of building return back and to attain the aims of stopping settlement and tilt and rectifying properly. The raft expansion can not only reduce the settlement trend in the process of rectifying inclination, but also play the role of preventing tilting in the building use process.
Last Update: 2018-05-31