摘要
以朗金土压力公式为基础，建立了分步开挖基坑挡土墙上主动土压力荷载增量的极限状态方程，给出了符合可靠度要求的土压力荷载的分项系数；分析了分步开挖时土压力计算中应注意的问题，并分析研究了土性参数的变异性与荷载分项系数对土压力可靠度计算的影响。
Equation of ultimate state of active earth pressure loading increment on retaining wall in foundation pit during excavation by steps is set up;coefficient of sorting of earth pressure loading conforming to the requirement of reliability is given;problems in earth pressure calculation during excavation by steps are analyzed.
出处
《工程勘察》
CSCD
北大核心
2000年第2期4-7,共4页
Geotechnical Investigation & Surveying
关键词
土压力
极限状态
荷载
分步开挖
基坑
挡土墙
earth pressure
ultimate state
coefficient of sorting
reliability
excavation by steps
