Culmann's method for active earth pressure of cohesive soil and its application
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摘要: 基于库仑理论的平面滑裂面假设，利用库尔曼图解法求无黏性土土压力原理，考虑滑裂面上填土的黏聚力和填土与挡土墙背之间的黏着力，推出求黏性土主动土压力的新方法。方法可以使用假定滑裂面的方式进行编程试算从而求得主动土压力及破坏面倾角。采用VB.net为开发平台编制了程序。计算显示该方法易于实现且精度高，原理简单，便于推广应用。Abstract: Based on the sliding plane hypothesis of Coulumb's earth pressure theory and the Culmann's graphical construction for the active earth pressure of non-cohesive soil, a new method to calculate the active earth pressure of cohesive soil is derived considering the cohesion force on the sliding surface and the adhesive force on the interface of retaining walls. The assumption of sliding surface for programming is employed to obtain the active earth pressure and the sliding plane angle. Using programming language VB.net design, the procedures are developed. The calculated results show that the proposed method is of simple principle and high precision. It can be easily popularized and applied in projects.
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