摘要
为解决传统方法应用于岩土工程反分析问题时效率低、计算量大的缺点,将单纯形算法和模拟退火算法直接结合为一种混合优化算法。以测点实测值和计算值的误差建立精确罚函数模型,将有限元程序ABAQUS作为一个单独模块嵌入到优化算法程序中,编制了有限元优化反分析程序。结合工程实例应用了该优化算法,并在工程数值模型中采用开发的材料模型子程序,提高了反演参数精度。计算结果表明,该方法是可行的,与传统方法相比搜索效率显著提高,可以用于岩土工程的参数反演分析。
In order to solve the shortcomings of low efficiency and large amount of calculation when traditional methods are applied to back analysis of geotechnical engineering, simplex algorithm and simulated annealing algorithm are directly combined as a hybrid optimization algorithm. The exact penalty function model is established based on the errors of measured and calculated values. The finite element program ABAQUS is embedded in the optimization algorithm program as a separate module, and the finite element optimization back analysis program is developed. In order to improve the accuracy of inversion parameters, a material model subroutine was developed and applied to engineering numerical model. The optimization method and material model subroutine are applied to the given engineering examples. The results show that the method is feasible and the search efficiency is significantly improved compared with the traditional method. It can be used for parameter inversion analysis of geotechnical engineering.
作者
贾陆锋
龚俊
贾善坡
JIA Lufeng;GONG Jun;JIA Shanpo(School of Urban Construction, Yangtze University, Jingzhou 434023, China;China First Metallurgical Group Co. Ltd, Wuhan 430081, China;Institute of Unconventional Oil & Gas, Northeast Petroleum University, Daqing 163318, China)
出处
《人民长江》
北大核心
2019年第10期187-192,共6页
Yangtze River
基金
国家自然科学基金项目(41102182)
关键词
岩土参数反演
单纯形-模拟退火算法
ABAQUS
有限元
geotechnical parameter inversion
simplex-simulated annealing algorithm
ABAQUS
finite element
