【摘要】 介绍了考虑楔形体滑面变形的简捷极限变形平衡法 ,认为该法概念明确 ,分析快捷。传统的极限平衡法只考虑了沿滑动面交线方向的切向力 ,而忽略了与交线垂直方向的切向力 ,由此得到一个静定体系并求得静力解。文章经分析及与实验对比 ,说明不考虑与交线垂直方向的切向力的影响是偏于不安全的 ,因此在的方法中考虑滑面的变形以求解静不定体系。对楔形体稳定分析的实例表明该简捷分析法的计算结果与实验成果相一致 ,而极限平衡法得到的安全系数偏高。通过分析 ,认为楔形体滑面的相对刚度系数对其稳定性影响较大 ,因此在实际工程中应加以重视。更多还原

【Abstract】 A simple and direct limiting deformation equilibrium method for wedge sliding considering all the three deformation components of the discontinuity planes is presented. The traditional limiting equilibrium method is based on a statistic system assuming that sliding is resisted only by the sliding resistance parallel to the sliding direction along the line of intersection of the two discontinuity planes. Therefore, we work out the psudo-elastic system to take care of the deformation of the discontinuities and to solve the indeterminate system. Through analysis and experiment, it is illustrated that the result based on traditional method is unsafe. The calculated results are fairly consistent with the experimental ones, while those based on the traditional method are unsafe. The stiffness of the discontinuities should be emphasized.更多还原