论文部分内容阅读
山区高速公路建设中会遇到大量的边坡开挖,其坡比对工程的设计与投资影响较大。因此研究边坡坡比的优化问题,具有显著的经济效益和社会效益。为了保证边坡开挖工程既安全可靠又经济合理,在分析边坡工程地质条件的基础上,采用剩余推力法计算天然斜坡的稳定性。并根据规范从经济效益考虑,确定在开挖与支护总费用最低时的边坡开挖坡比为最优坡比。实例分析表明,施谭坝边坡工程的最优坡比为1:0.65,该稳定性分析方法及最优坡比优化设计方案具有实用性和合理性。
There will be a lot of slope excavation in the construction of mountain highway, and its slope ratio has a greater impact on the design and investment of the project. Therefore, research on the slope slope ratio optimization has significant economic and social benefits. In order to ensure that the slope excavation works are safe, reliable and economical, based on the analysis of the engineering geological conditions of the slope, the residual thrust method is used to calculate the stability of the natural slope. According to the specification, considering the economic benefits, it is determined that the slope ratio of slope excavation is the optimal slope ratio when the total cost of excavation and support is the lowest. The case study shows that the optimal slope ratio of Shi Tanba slope is 1: 0.65. The stability analysis method and optimal slope ratio optimization scheme are practical and reasonable.