某路堑开挖边坡支护结构优化设计研究

发布时间：2018-02-04 19:38

本文关键词： 路堑边坡优化设计遗传算法边坡角支护结构　出处：《武汉工程大学》2014年硕士论文　论文类型：学位论文

【摘要】：在常规边坡支护结构的设计过程中，设计人员的个人经验容易占主导地位，这样易使设计偏于保守，安全储备过高，造成一定的资源浪费。本文主要是应用相对较为先进的数学方法（遗传算法）对边坡的一些常用支护形式进行分析。本文主要的研究目的如下： 1、实际工程中大多直接以经验值选取边坡开挖角，缺乏一定的理论依据。本文选取边坡开挖角做为变量，以开挖费用和支护费用之和为目标函数，以安全系数为约束条件，，利用遗传算法工具箱确定了最合理的边坡开挖角，在边坡费用和支护费用之间寻找到一个平衡点，使得成本最低。 2、本文对重力式挡墙、锚杆（锁）、抗滑桩三种支护结构进行分析，分别确定了影响各结构造价的影响因素。 3、文中应用遗传算法工具箱，编写出合适的适应度函数以及约束函数，对三个支护结构分别进行优化研究，得到各支护结构截面尺寸的最优解，运用岩土相关软件对其进行稳定性验算，确定各结构合理可行。 4、边坡工程都是分级进行，优化问题广泛存在。文中探讨分析了边坡工程从方案优选到单个支护结构优化的整体优化过程。
[Abstract]:In the design process of the conventional slope support structure, the personal experience of the designer is easy to occupy the leading position, so the design tends to be conservative and the safety reserve is too high. This paper mainly uses the relatively advanced mathematical method (genetic algorithm) to analyze some common support forms of slope. The main purpose of this paper is as follows: 1. In practical engineering, most of the slope excavation angle is directly selected from the experience value, which is lack of certain theoretical basis. In this paper, the slope excavation angle is chosen as the variable, and the sum of the excavation cost and the support cost is taken as the objective function. Taking the safety factor as the constraint condition, the most reasonable slope excavation angle is determined by genetic algorithm toolbox, and a balance point is found between the slope cost and the support cost, so that the cost is the lowest. 2. In this paper, three kinds of supporting structures, such as gravity retaining wall, anchor rod (lock, anti-slide pile), are analyzed, and the factors that affect the cost of each structure are determined respectively. 3. In this paper, genetic algorithm toolbox is used to compile suitable fitness function and constraint function to optimize the three supporting structures, and obtain the optimal solution of the section size of each supporting structure. Using geotechnical software to check its stability, determine the structure is reasonable and feasible. 4. Slope engineering is carried out at different levels, and the optimization problem exists widely. This paper discusses and analyzes the whole optimization process of slope engineering from scheme optimization to single support structure optimization.
【学位授予单位】：武汉工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.1

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