摘要本设计是甬舟高速公路边坡支护设计,设计对象为三处需要进行稳定性分析、计算和支护的岩质边坡。边坡支护设计，首先要对边坡进行稳定性评价，计算边坡潜在滑动面的稳定性系数或者计算潜在滑动面的下滑力。在本设计中，边坡稳定性分析和计算计算采用了瑞典条分法、不平衡推力传递法、杨布法以及极射赤平投影法。每个边坡采用两种分析方法，每种方法都有各自的特点，计算结果也会略有不同，可以进行对比分析。根据支护前的稳定性分析及计算，选择最优方案对边坡进行支护设计，并进行支护后的边坡稳定性评价。比较支护前后的边坡最危险滑动面的稳定性系数或者下滑力的数值，对支护效果做出评价。另外，作者对毕肖普法进行了Visual C++ 程序设计，可以作为毕肖普法计算危险滑动面稳定性系数的快速、简便计算方法。根据计算结果并经比较各种方案的优劣，本设计边坡支护采用预应力锚索进行支护。50954

毕业论文关键词：边坡支护；边坡稳定性计算方法；赤平投影；预应力锚索

Abstract This paper is a slope support design for Yonghzou highway. It includes three rock slopes where stability analysis, calculations and support are needed. When conducting slope support, first, the slope stability evaluation should be done, followed by the calculation of the potential sliding surface slope stability factor or potential sliding force. In this design, the slope stability analysis and caculations use many methods, namely Swedish slice method, Bishop, Janbu, the transfer coefficient method and the hemispherical projection method. Each slope uses two analytical methods. As each method has its own characteristics, the results will be slightly different so that we can make comparisions. According to the stability analysis and calculations before supprting, we choose the best program on the slope and then conduct slope stability evaluation. By comparing the slope stability factor of the most dangerous sliding surface before and after supporting, we can evaluate the effect of the supporting design. In addition, the author designs a Visual C + + program for the method of Bishop, which can be used as a very convenient way for the slope analysis. According to the calculation results, and by comparing the pros and cons of various options, the slopes are supported by using the pre-stressed canchor cable.

Keywords: slope support; slope stability calculation method; hemispherical projection method; pre-stressed anchor cable

目   录

第一章  绪论 1

1.1 问题的提出 1

1.2 几种常用支护手段 1

第二章  工程简介 2

2.1 工程概况 2

2.2 工程地质概况 2

2.2.1 水文、气象 2

2.2.2工程地质条件 2

第三章  设计思路 5

3.1 主要设计方案思路 5

3.2 设计原则 5

3.3 设计参数 5

第四章  K50+500里程边坡稳定性计算及支护 7

4.1 不平衡推力传递法及杨布法 7

4.1.1 不平衡推力传递法 7

4.1.2 杨布法 8

4.2 K50+500里程边坡稳定性计算 9

4.2.1 边坡物理力学参数