摘要
当挡土墙后填土为倾斜面粘性填土时 ,朗肯土压力理论应用不多 .其原因在于 :一方面 ,采用朗肯极限应力分析方法难以获得解析表达式 ;另一方面 ,采用Terzaghi图解法需作若干个莫尔圆进行分析 ,其过程较繁锁 .为此 ,作者通过较为简单的应力圆图解分析 ,推导出了此边界条件下朗肯土压力的解析公式 .理论推导还表明 ,其它边界条件下朗肯土压力的解是其解的特例 ,从而证明了这些公式的正确性 .此外 ,通过实例介绍了所推公式的应用方法 .为便于应用 ,编写了计算机程序 ,可完成全部计算和绘图处理 .实践结果表明 ,所推公式还可用来解决朗肯土压力理论应用范围内的其他问题 ,具有普遍适用的意义 .
Up to now the theory of Rankine earth pressure is not widely used in the condition of retaining walls of cohesive backfill with an inclined surface. For it is difficult to obtain the analytical formulae from the analytical method of Rankine′s limited stress, and Terzaghi′s graphical solution becomes tiresome because several Mohr circles need to be drawn. The authors derive the analytical formulae from the simple graphical analysis of the stress circles. Meanwhile derivation also shows that the solutions of Rankine earth pressure of other boundary conditions are its special examples. Therefore, these formulae are proven to be correct. Besides, an example is provided to illustrate the application of these formulae. To be convenient, they are programmed so that the whole calculation and graphical treatment can be completed. These formulae presented in the paper can be used to solve other problems within the application range of the theory of Rankine earth pressure. [
出处
《中南工业大学学报》
CSCD
北大核心
2000年第6期473-476,共4页
Journal of Central South University of Technology(Natural Science)
基金
国家教育部博士点基金资助项目! (945 330 5 )
关键词
挡土墙
粘性填土
朗肯土压力
莫尔圆
边界条件
retaining wall
cohesive backfill
Rankine earth pressure
Mohr circle
boundary condition
