土木与环境工程学报（中英文）2025，Vol.47Issue(3)：66-78,13.DOI:10.11835/j.issn.2096-6717.2024.042
基于精细有限元模型的云冈石窟稳定分析与安全评估
Stability analysis and safety evaluation of Yungang Grottoes based on fine finite element model
摘要
Abstract
Subjected to various natural forces,the disease of grotto temple is serious.The damage degree of grotto temple is increasing with time,and the preventive protection for grotto temple is becoming more essential.The preventive protection measures mainly consists of the numerical evaluation and on-site monitoring.In order to ensure the accuracy of numerical calculation,this paper proposes the following methodology:First,the three-dimensional laser scanning cloud image of the grottoes temple is used to generate a fine geometric model of the grottoes temple to accurately reflect its complex geometric shape;Secondly,H-B criterion is used to fully consider the deterioration of rock mass mechanical properties caused by weathering,cracks,joints and other diseases,and to obtain reliable rock physical and mechanical parameter,and then establish a refined numerical calculation model that more truly reflects the boundary conditions,stress displacement and possible failure path.Finally,the current stability of the grotto temple is analyzed by strength reduction method,and the danger zone of the grotto after the deterioration of the rock mass is predicted by the longitudinal wave velocity of the rock mass,and an early warning system is established to realize the preventive protection of the grotto temple.Taking Grottoes No.9 and 10 of Yungang Grottoes as an example,systematic modeling,force analysis and stability discussion are carried out by using the above research ideas.The results show that the grottoes maintain a stable state as a whole at present,and stress concentration exists in some areas.By simulating rock strength deterioration,the potential instability risk area of the cave is predicted,and an early warning system based on rock P-wave velocity is established.关键词
石窟寺/稳定性分析/安全评估/H-B准则/精细化数值模型/预警分析Key words
grotto temple/stability analysis/safety evaluation/H-B criterion/refined numerical model/precautionary analysis分类
土木建筑引用本文复制引用
窦超,丁会方,闫丁,任建光,王娟,杨娜..基于精细有限元模型的云冈石窟稳定分析与安全评估[J].土木与环境工程学报（中英文）,2025,47(3):66-78,13.基金项目
山西省文物局科技项目(2021KT33) Science and Technology Project of Shanxi Cultural Relics Bureau(No.2021KT33) （2021KT33）
