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| Cohesive zone model based analysis of load-carrying capacity of stone arch ring |
| Received:May 24, 2012 Revised:June 22, 2012 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201306015 |
| KeyWord:stone arch bridge load-carrying capacity discontinuous deformation interface element cohesive zone model |
| Author | Institution |
| 汪劲丰 |
浙江大学 土木工程系, 杭州 |
| 林建平 |
浙江大学 土木工程系, 杭州 |
| 徐荣桥 |
浙江大学 土木工程系, 杭州 |
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| Abstract: |
| Interface between the stone of arch ring tends to be weak position of the structure,which determines 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 tangential direction of the interface relative slip between arch stone may occur.The complex interface behavior 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.Then 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 capacity 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. |
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