基于高斯过程优化与FLAC3D数值计算的岩体力学参数反分析方法  

A method based on Gaussian process optimization and FLAC3D numerical simulation for back analysis on rock mass parameters

作　　者：龚杨凯 卢翠芳 黄杰 苏国韶[1,2] GONG Yang-kai;LU Cui-fang;HUANG Jie;SU Guo-shao(College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China;Key Laboratory of Engineering Disaster Prevention and Structural Safety of the Ministry of Education, Nanning 530004, China)

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]工程防灾与结构安全教育部重点实验室,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2019年第4期1038-1043,共6页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51869003)

摘　　要：为了解决大型地下工程中岩体力学参数反分析的高计算代价问题,将适用于高计算代价优化问题的高斯过程优化方法与FLAC3D数值计算相结合,提出一种新的岩体力学参数反分析方法。研究结论表明,与传统的参数反分析方法相比较,高斯过程优化方法的数值计算重分析次数显著降低,计算耗时明显减少,更适用于高计算代价的岩体参数反分析问题。Aiming to tackle the problem about high computation cost for displacement back analysis in large-scale geotechnical engineering, this paper proposes a new method to cut down the cost problem, based on Gaussian Process Optimization (GPO) and FlAC3D numerical calculation for back analysis.The studies conclude that the new method can effectively reduce the degree of numerical calculation and the computation time.Comparing with the traditional methods, it is more suitable to solve the problem of high cost with parameters back analysis in rock engineering.

关 键 词：岩体力学参数 地下工程 反分析 高斯过程优化 

分 类 号：TU45[建筑科学—岩土工程]