摘要
通过对复合地基作用机制的分析,讨论研究了复合地基侧向土压力的计算方法.研究表明,复合地基侧向土压力的计算,应根据复合地基增强体性质不同采用不同的设计方法.对柔性桩复合地基,可采用复合土层复合模量法,即以复合方法计算出的复合土层强度指标,代替原地基土强度指标的方法;对刚性桩复合地基,应采用复合地基荷载分担比方法,选择基础底面桩间土作用的附加应力,作为该平面位置的超载值.
Overloading design is a common problem in the design and calculation of foundation pit engineering. The calculation of pile foundation, composite foundation and limited soil pressure lacks standard. In this thesis, the calculation method of lateral soil pressure is proposed based on the mechanism of composite foundation. The analysis reveals that the calculation should depend on the type of reinforcement in the composite foundation. For flexible pile composite foundation,composite modulus method is suggested,i.e, the parameters of the composite soil layers can be calculated by recombination method. For rigid pile composite foundation, load share method is suggested. Subsidiary stress in the soil between piles under the foundation can be used as the overload of the corresponding plane.
出处
《河南科学》
2012年第9期1271-1275,共5页
Henan Science
基金
国家自然科学基金资助项目(50978235)
关键词
基坑
侧壁
复合土层
土压力
稳定性
foundation pit： side wall： composite soil layer： earth pressure： stability
