南京工业大学学报（自然科学版）2024，Vol.46Issue(1)：84-92,9.DOI:10.3969/j.issn.1671-7627.2024.01.010
层状地基土水平抗力比例系数反演的杂交粒子群算法
Inversion of the constant of modulus of horizontal subgrade reaction by hybrid particle swarm optimization algorithm in layered soil
摘要
Abstract
The constant of modulus of horizontal subgrade reaction is an important parameter for deformation calculation of supporting structure in excavations.For the multi-objective optimization problem of inversion of the constant of modulus of horizontal subgrade reaction in layered soil,a back analysis method based on particle swarm optimization(PSO)was proposed which combined with the measured lateral deformation of retaining wall and finite element method for beams.A dual control convergence condition based on precision of the constant of modulus of horizontal subgrade reaction and the objective function were introduced for inversion calculation.The stability conditions of the optimal solutions were given.On the basis of verifying the accuracy of inversion parameters by the numerical model of excavation,the engineering applicability of hybrid particle swarm optimization(breedPSO)algorithm in excavation was further verified by engineering case.In addition,the computational efficiency of different optimization methods and the convergence characteristics of the constant of modulus of horizontal subgrade reaction were discussed.The results showed that the breedPSO algorithm had higher computational efficiency and accuracy,which provided an effective way to estimate the constant of modulus of horizontal subgrade reaction reasonably.关键词
基坑/层状地基土/水平抗力比例系数/杂交粒子群算法/反分析Key words
excavations/layered foundation soil/the constant of modulus of horizontal subgrade reaction/hybrid particle swarm optimization/back-analysis分类
建筑与水利引用本文复制引用
朱伟鑫,孙前林,吕乐,王旭东..层状地基土水平抗力比例系数反演的杂交粒子群算法[J].南京工业大学学报（自然科学版）,2024,46(1):84-92,9.基金项目
上海隧道工程有限公司科研项目(2021-SK-21) （2021-SK-21）
