完整锚杆系统动力参数反演的遗传算法  

A Genetic Algorithm for Dynamic Parameters Reverse Deduction of Integrated Anchorage system

作　　者：张永兴[1] 宋静[1] 陈建功[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045

出　　处：《地下空间与工程学报》2006年第6期971-974,共4页Chinese Journal of Underground Space and Engineering

基　　金：教育部科学技术重点项目(项目批准号:03138);国家自然科学基金资助项目(项目批准号:50378096)

摘　　要：在锚杆-围岩结构系统低应变动力响应分析中,锚固介质及围岩对锚杆的影响可用锚固系统参数模型中的动刚度与阻尼来衡量,它们是表征锚固质量的重要指标。而对锚固质量的定量评价则以完整锚杆动力参数作为依据。作者在完整锚杆动力响应数值计算的基础上,提出一种动力参数反演的遗传算法。利用遗传算法具有自组织、自适应、自学习且收敛速度较快等优良特性,进行了工程实例的计算,得到动力参数的最优解。结果表明这种多参数反演的方法是比较准确可靠的。In dynamic analysis of anchorage system, the influence of the cement grouting as well as the rock layer on the anchored bar can be evaluated as the two kinds of parameters： the dynamic stiffness and the damp, which are the vital reference of the anchorage quality. Based on the analytic solution to the dynamic equation of the integrated anchor bar, the new approach which combines genetic algorithm and the toolbox of Matlab is employed to solve the problem of multi - parameters reverse deduction for integrated anchorage system in dynamic testing. The examples show that the method presented in this paper is effective and reliable.

关 键 词：完整锚杆 动力参数 反演 遗传算法 

分 类 号：TU753[建筑科学—建筑技术科学]