岩土工程学报Issue(z2)：412-417,6.DOI:10.11779/CJGE2014S2072
双排桩隔离位移场防护邻近基坑高楼监测研究
Monitoring of double-row piles and high buildings adjacent to deep foundation pits
李东海 1王梦恕 2杨广武 1刘军 3张顶立4
作者信息
- 1. 北京交通大学隧道及地下工程教育部工程研究中心，北京 100044
- 2. 北京市市政工程研究院，北京 100037
- 3. 北京市重大项目建设指挥部办公室，北京 100029
- 4. 北京建筑工程学院，北京 100044
- 折叠
摘要
Abstract
The existing buildings adjacent to a deep foundation pit will be damaged seriously or additionally deformed when the foundation pit is excavated, and it will lead to motion of soils. The double-row piles as one of shielding measures are studied. Based on a deep foundation pit adjacent to high buildings in Beijing, the key design parameters of double-row piles such as distance of row piles, distance of piles, link of top beam, and strength of soils between the piles are analyzed. Through the numerical simulation and in-situ monitoring, the displacement field grouped by the double-row piles, soils after the piles and high buildings is analyzed. The deformation laws of the double-row piles, soils after the piles and high buildings are concluded. At the same time, it is proved that the double-row piles can reduce the displacement field obviously by comparing the double-row piles to the single-row ones. The horizontal displacement of soils after the piles decreases from 17 mm to 8 mm, with a percent of about 53%. The maximum differential settlement of high buildings is 6.9 mm and the angle variance is 0.33‰. In a word, the safety of buildings is ensured by monitoring during the excavation of the deep foundation pit. It may be useful reference to the similar engineering in future.关键词
深基坑/双排桩/位移场/既有建筑/监测Key words
deep foundation pit/double-row pile/displacement field/existing building/monitoring分类
建筑与水利引用本文复制引用
李东海,王梦恕,杨广武,刘军,张顶立..双排桩隔离位移场防护邻近基坑高楼监测研究[J].岩土工程学报,2014,(z2):412-417,6.
