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以不同土压力状态与静止土压力状态时的压力差值计算分布力,基于Mindlin应变解建立了任意土压力变化下的土体侧向位移计算模型,计算得到土体达到主动极限状态下土体位移和达到被动极限状态下的土体位移。通过编制的程序研究了不同计算参数对土体达到主(被)动极限状态下土体位移的影响规律,包括土的内摩擦角、黏聚力、计算深度、计算宽度等,研究了土体主动极限位移和达到被动极限位移相关性规律。通过模型试验的实测资料验证了土压力位移计算模型的有效性和合理性。利用计算模型可以得到不同位移限值要求下的侧向土压力,从而为不同工程中土压力的合理取值提供了理论依据。
The distribution force is calculated based on the pressure difference between the different earth pressure states and the static earth pressure state. Based on the Mindlin strain solution, the calculation model of the soil lateral displacement under any soil pressure change is established, and the soil mass under the active limit state Displacement and displacement of soil under passive limit state. The influence of different calculation parameters on the soil displacement under the condition of main (or) dynamic limit was studied by the program, including the internal friction angle, cohesion, calculated depth and calculated width of the soil, The relationship between active limit displacement and passive limit displacement. The validity and rationality of the soil pressure displacement calculation model are verified by the measured data of the model test. The lateral earth pressure under different displacement limits can be obtained by using the calculation model, which provides a theoretical basis for the reasonable value of earth pressure in different projects.