论文部分内容阅读
改进了水平层分析法,用于计算任意位移模式的土压力分布。对不同位移模式下水平微分单元进行受力分析,认为位移模式只影响了层间等效内摩擦角。根据前人提出的内摩擦角逐渐发挥的概念,将层间等效内摩擦角与挡土墙位移模式联系起来,并应用到水平层分析法中,实现了能够定量反映位移模式的土压力计算方法。分析表明:随位移模式变化,土压力合力大小始终保持不变且与库仑理论计算结果相一致,土压力分布和合力作用点则变化显著。试验数据验证了方法的合理性和可靠性。研究成果可供刚性挡土墙土压力计算参考。
Improved horizontal-layer analysis for calculating earth pressure distribution at arbitrary displacement patterns. The force analysis of horizontal differential units in different displacement modes is considered. The displacement mode only affects the inter-layer equivalent internal friction angle. According to the concept of gradual development of internal friction angle put forward by the predecessor, the equivalent internal friction angle between layers and the displacement mode of retaining wall are linked and applied to horizontal layer analysis to realize the earth pressure calculation which can quantitatively reflect the displacement mode method. The analysis shows that with the change of displacement mode, the resultant force of earth pressure always stays unchanged and consistent with the result of Coulomb theory, the distribution of earth pressure and the point of action of force change significantly. Experimental data verify the rationality and reliability of the method. The research results can be used as reference for earth pressure calculation of rigid retaining wall.