摘要
以某深基坑支护工程为例进行研究,该基坑北侧紧邻一高层建筑,该侧支护结构采用双排灌注桩加深层搅拌桩,现场监测资料显示支护结构有效地控制了基坑及临近建筑的变形,基坑支护设计合理。采用数值模拟方法对比分析了有无临近建筑两种工况下桩体的受力性状。结果表明:在临近建筑情况下基坑变形、支护桩弯矩、支护桩剪力均放大了数倍,而且在弯矩分布图上也有差别。研究结果可为支护结构的优化设计提供思路。
A deep foundation pit was studied in this paper,which is adjacent to a building. The retaining structure is collateral pile with double deep mixing, and the field monitoring data show that deformation of the supporting structure and adjacent building is controlled effectively, the structural design is reasonable. Comparative analysis is made by numerical simulation under two kinds of conditions. The results show that, in the case of pit adjacent buildings, the deformation of pit, bending moment of supporting pile and shear force of supporting piles are enlarged several times, and in the moment there are differences on the maps. This study may provide ideas for optimization design of support structure.
出处
《建筑科学》
北大核心
2014年第7期119-124,共6页
Building Science
关键词
深基坑
双排桩支护
紧邻建筑
桩体受力特征
数值模拟
deep foundation pit
double-row piles
adjacent building
pile force characteristic
numerical simulation
