摘要
岩体参数是岩土工程安全性分析的关键因素,目前很多研究者通常采用反演分析确定岩土参数。文章针对常规反演方法无法跳出局部最优解和初始值要求高的难题,MATLAB采用软件编制了模拟退火法(SAA)参数反演程序,实现了模拟退火反演理论与ABAQUS有限元软件的耦合分析,反演迭代过程中通过设定跳出局部最优解的概率实现了全局优化反演的目的;提出了针对反演程序的计算实验模型理念,验证了反演程序的有效性和实用性,并对依托工程南京某基坑进行了有效的参数反演分析。
Rock mass parameters are the key factors of the security analysis in geotechnical engineering, and at present, the inverse analysis is normally used to determine the rock mass parameters. Aiming at the problems con- cerning local optimization solution and initial value input with conventional inverse method, the MATLAB software is adopted to develop the inversion program of parameters based on simulated annealing arithmetic method （SAA）, realizing the analysis with coupling of simulated annealing method and ABAQUS finite element software. The global optimization inversion is to be reached by means of setting the probability of escaping from local optimization solu- tion during the inversion of iterative process. The calculation experimental model concept is proposed to validate the effectiveness and practicability of the inversion program, and the effective parametric inverse analysis is carried out based on a foundation pit project in Nanjing
出处
《现代隧道技术》
EI
北大核心
2013年第4期76-83,共8页
Modern Tunnelling Technology
关键词
模拟退火法
反演程序
工程应用
Simulated annealing method
Inversion program
Engineering application
