论文部分内容阅读
以简单非均质岩质边坡的滑动为研究对象,建立了Sarma法力学模型。根据岩质边坡块体静力平衡条件,得出侧向正压力与临界加速度系数之间的关系,推导了临界加速度系数公式,得到边坡处于地震烈度条件下的安全稳定系数。分析了边坡的安全稳定系数与临界加速度系数之间的函数关系,并利用此函数关系将传统Sarma法进行了改进。计算结果表明:岩质边坡安全稳定系数与临界加速度系数之间呈单调递减的函数关系;与传统Sarma法相比,改进Sarma法无需迭代,不存在收敛性问题,算例分析中仅需6次计算就得到结果,并能满足要求。
Taking the slip of simple heterogeneous rock slopes as the research object, a Sarma mechanics model was established. According to the static equilibrium condition of rock mass slope block, the relationship between the lateral positive pressure and the critical acceleration coefficient is obtained, and the critical acceleration coefficient formula is deduced, and the safety and stability coefficient of the slope under seismic intensity condition is obtained. The functional relationship between safety factor and critical acceleration factor of slope is analyzed, and the traditional Sarma method is improved by using this function. The calculated results show that the rock slope stability and stability coefficients have a monotonous decreasing relationship with the critical acceleration coefficient. Compared with the traditional Sarma method, the improved Sarma method does not need iteration, and there is no convergence problem. Only 6 times Calculating results, and can meet the requirements.