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土工膜防渗结构体的稳定分析计算中,滑动体和抗力体之间的不平衡推力作用方向的不同假定,对安全系数的影响很大。由于滑动面是未知的,因此需要假设不同的滑动角,分别计算安全系数,然后求出最小安全系数即为整个防渗结构体的安全系数,整个计算过程非常复杂,计算工作量大。利用数学求导方法,确定出最危险滑动面和滑动角,计算工作量大为减少。分析探讨了不同稳定分析计算方法的优缺点,对各种计算方法进行了优化分析,找出最佳计算方法。
Geomembrane impervious structure of the stability analysis and calculation, the sliding body and the body of the imbalance between the thrust direction of the different assumptions, a significant impact on the safety factor. Because the sliding surface is unknown, it needs to assume different sliding angles and calculate the safety factor respectively. Then, the minimum safety factor is calculated as the safety factor of the whole anti-seepage structure. The calculation process is very complicated and the calculation workload is heavy. Using mathematical derivation method to determine the most dangerous slip surface and sliding angle, the calculation workload greatly reduced. Analyzed the advantages and disadvantages of different methods of stability analysis and calculation, optimized the various calculation methods and found out the best calculation method.