岩体弹性模量反分析的进化差分方法  

A rock mass elastic modulus back analysis method using differential evolution algorithm

作　　者：燕柳斌[1] 陈艳香[1] 苏国韶[1] 

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2008年第4期346-348,共3页Journal of Guangxi University（Natural Science Edition）

基　　金：广西科学基金项目(桂科自0832023)

摘　　要：考虑到岩体弹性模量反分析本质上是一个复杂的非线性函数优化问题,采用全局优化算法是解决这个问题的理想途径.本文将具有收敛速度快、易于实现和全局寻优能力强大等优点的差分进化算法(Differential Evolution,DE)融入到岩土工程数值计算程序(FLAC3D)中,提出了基于DE算法的岩体弹性模量反分析方法,并通过一个简单算例验证了该方法的正确性,结果也表明该方法是科学可行的,具有较高的精度.The back analysis in rockmass elastic modulus is a typical complicated nonlinear function optimization problem. To solve this problem,the global optimization algorithm is a very good method. The differential evolution （DE） algorithm rapidness of convergence ,easier to achieve and has stronger overall situation restraining ability. Combining FLAC^3D,a back analysis algorithm in rockmass elastic modulus based on differential evolution,is proposed in this article. Through a simple example,the proposed algorithm is verified,and the results show that this new algorithm is a very good back analysis method and its efficiency is very good.

关 键 词：岩体 反分析 差分进化算法 数值计算 

分 类 号：TU415[建筑科学—岩土工程]