摘要
将填土内摩擦角及墙土接触面上的外摩擦角与墙体平动位移之间的关系植入传统水平层分析法中,用于求解非极限平动变位模式状态下的土压力。取挡土墙后滑动土体的水平薄层单元进行受力分析,建立了非极限状态下土压力强度的一阶微分方程,得到了非极限平动变位模式下挡土墙上的土压力分布、土压力合力及土压力合力作用点的计算公式。将计算结果与已有模型试验、库仑土压力和其它土压力计算方法的结果进行了比较。结果表明该计算方法接近土压力的真实分布,能综合考虑挡土墙变位模式及其位移对土压力的影响。
The relation between the internal and external frictional angle and the displacement of retaining wall are incorporated into modified horizontal layer analysis method to solve earth pressure under non-limit state with mode of translation.After forcing analysis to horizontal slice element of sliding soil behind the retaining wall,the first order differential equations of earth pressure under non-limit state are set up,then the strength of the non-limit state earth pressure for retaining wall with mode of translation,the resultant force of earth pressure and its application point are obtained.Comparing the calculated results with some experimental results and Coulomb earth pressure,it is shown that the presented calculation method is very close the real distribution of earth pressure,the influence of movement mode and displacement of retaining wall to earth pressure can be comprehensively considered.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2010年第19期75-79,共5页
Journal of Wuhan University of Technology
基金
宁夏大学科学研究基金(ZR200701
QN200816)
关键词
水平层分析法
非极限状态
平动模式
主动土压力
被动土压力
horizontal layer analysis method
non-limit state
translation mode
active earth pressure
passive earth pressure
