计算力学学报Issue(6)：841-848,8.DOI:10.7511/jslx201306015
基于黏聚区域模型的石拱圈承载力分析方法研究
Cohesive zone model based analysis of load-carrying capacity of stone arch ring
摘要
Abstract
Interface between the stone of arch ring tends to be weak position of the structure ,which deter-mines the safety and load-bearing capacity of the arch bridge .Because of the low strength ,the interface between the stone and the mortar will be cracked and extended in the normal direction .Along the tan-gential direction of the interface relative slip between arch stone may occur .The complex interface behav-ior becomes the difficulty of load-carrying capacity analysis and safety assessment of stone arch bridge .In order to simulate the crack of the interface and the discontinuous deformation with the crack extended , multiple broken lines mode cohesive zone model is used to describe the tangential sliding and normal crack ,and interface element of zero thickness is established .Thus ,ultimate load-bearing capacity analysis method considering the discontinuous deformation effect for the stone arc bridge is formed .T hen the whole destruction process analysis of stone arc ring is carried out with this method .Numerical simulation of the discontinuous deformation between the arch stone is realized ,and the ultimate load-bearing capaci-ty and the corresponding failure mode are obtained .And the feasibility of the analysis method proposed in this paper is verified .The method proposed in this paper can simulate the whole destruction process of the stone arc structure ,and can be used for the load-carrying capacity analysis and the safety assessment of the brittle failure of the structure .关键词
石拱桥/承载能力/非连续变形/界面单元/黏聚区域模型Key words
stone arch bridge/load-carrying capacity/discontinuous deformation/interface element/cohe-sive zone model分类
交通工程引用本文复制引用
汪劲丰,林建平,徐荣桥..基于黏聚区域模型的石拱圈承载力分析方法研究[J].计算力学学报,2013,(6):841-848,8.基金项目
国家自然科学基金（51108411，11172266）；浙江省自然科学基金（Y1110181）；浙江省重点科技创新团队（2010R50034）资助项目． （）
