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在总结归纳土压力随变形发展规律研究现状的基础上,给出了一种新的考虑位移影响的土压力计算模型。提出被动区土压力计算修正系数η的取值范围;并提出计算中等代内摩擦角φD按抗剪强度相等原理分层计算土压力的方法。最后编制有限元程序进行计算和分析,计算结果表明:主动侧土压力计算值介于静止土压力与Rankine主动土压力之间,被动侧土压力小于Rankine被动土压力,并随变形的减小趋向于静止土压力。
On the basis of summarizing the research status of earth pressure with the development of deformation, a new earth pressure calculation model considering the effect of displacement is given. The range of correction coefficient η of passive earth pressure is proposed. The method of calculating soil pressure stratified by the principle of equivalent shear strength is proposed to calculate internal friction angle φD. Finally, a finite element program is compiled and analyzed. The calculation results show that the earth pressure on the active side is between the earth pressure and Rankine active earth pressure, the earth pressure on the passive side is less than Rankine’s passive earth pressure, At rest earth pressure.