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针对库仑土压力理论中图解法计算黏性土被动土压力过程繁琐及精度较低的问题,应用库仑平面滑裂面假定,考虑填土黏聚力及其与挡土墙墙背接触面上的黏着力,建立了可用于编程试算的黏性填土挡土墙的被动土压力计算公式.算例分析表明:对符合朗肯或库仑理论假设条件的情况,公式的计算结果与经典的朗肯或库仑公式相同;考虑与不考虑墙背上的黏着力,计算结果差异较大,该差异随着墙背上的黏着力增大而增大;公式计算简便快捷,精度可靠,易于在工程中推广应用.
In view of Coulomb’s theory of soil pressure, the method of calculating the passive earth pressure of clay soil is complicated and low precision, the Coulomb flat slip surface assumption is used, and the cohesion of earth fill and its contact with the wall of the retaining wall are considered The formula of passive earth pressure of clay-filled retaining wall which can be used for trial calculation is established.An example analysis shows that the calculation results of the formula are in good agreement with those of classical Lang Ken or Coulomb formula the same; consider and do not consider the adhesive force on the back of the wall, the calculation results are quite different, the difference increases with the increase of the adhesive force on the back of the wall; formula is simple and quick, accurate and reliable, easy in engineering In the promotion and application.