摘要
理论与实践均表明止水帷幕对基坑开挖和坑壁稳定有明显影响,但相关规范中尚未考虑。用数值模拟的方法分析了水泥土桩帷幕深度、排数对桩锚支护深基坑整体稳定性的影响,以及采用实体式布置与格栅式布置的区别,得出了基坑整体稳定性系数与水泥土桩深度、排数的关系,并分析了两种布置形式的差异,为基坑的支护设计与施工提供指导。
Although obvious impacting from waterproof curtain on foundation pit excavation and pit wall stability has made clear theoreti-cally and practically, but still failed to consider on relevant specifications. The paper has analyzed impacts from cement - soil pile cur-tain depths, number of rows on pile - anchor supported deep foundation pit overall stability and differentiation between solid arrange-ment and grid arrangement through numerical simulation ; worked out relationship between foundation pit overall stability coefficient and cement - soil pile depths and number of rows. Finally analyzed difference between the two arrangements thereby provided guidance for foundation pit support design and construction.
作者
左伟
叶洪东
魏东波
Zuo Wei;Ye Hongdong;Wei Dongbo(China Coal Geological Engineering Co.Ltd.,Beijing 100040;Hebei University of Engineering,Handan,Hebei 056038)
出处
《中国煤炭地质》
2018年第7期54-57,共4页
Coal Geology of China
关键词
桩锚支护
数值模型
帷幕深度
桩排数
布置模式
pile - anchor support
numerical simulation
curtain depth
number of pile rows
arrangement mode
