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| Damage identification method of continuous beam with uniform cross section based on curvature difference of support reaction influence line |
| Received:December 18, 2020 Revised:May 12, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20201218003 |
| KeyWord:uniform section continuous beam support reaction influence line curvature difference damage identification quantification of damage degree |
| Author | Institution |
| 唐盛华 |
湘潭大学 土木工程与力学学院 工程结构动力学与可靠性分析湖南省高等学校重点实验室, 湘潭 |
| 张佳奇 |
湘潭大学 土木工程与力学学院 工程结构动力学与可靠性分析湖南省高等学校重点实验室, 湘潭 |
| 刘宇翔 |
湘潭大学 土木工程与力学学院 工程结构动力学与可靠性分析湖南省高等学校重点实验室, 湘潭 |
| 成鹏 |
湘潭大学 土木工程与力学学院 工程结构动力学与可靠性分析湖南省高等学校重点实验室, 湘潭 |
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| Abstract: |
| In order to identify the damage of a continuous beam of uniform cross-section only by using only the damage state information,the support reaction influence line (SRIL) formula of a three-span unequal span continuous beam under a moving load was deduced.It was found that the curvature difference curve of SRIL would change suddenly at the damage position.Based on this phenomenon,a damage location method was proposed,and a calculation method of damage degree was further established,which can accurately quantify the damage degree.Through the simulation analysis of a three span continuous beam and a four span continuous beam in real engineering examples,it is proved that the damage location and quantitative method of SRIL curvature difference index is valid for damage identification of uniform cross-section continuous beam. |