摘要
深入研究了差分曲率差值指标在桥梁损伤定位中的应用;在进行清晰、完整的理论分析之后,对该指标提出了一个详细实用的应用流程,并研究了测点布置的优化问题;通过1个斜拉桥算例验证了差分曲率差值用于桥梁多处损伤定位的有效性并与模态方法进行了对比;最后,为了提高该方法在实际应用时的鲁棒性,给出了若干具体的建议措施。结果表明:该方法具有一定的优越性。
Authors deeply investigated the application of differential curvature difference indicator in damage localization of bridges. Based on the foundational theory analysis, the practical and detailed application method of this indicator was proposed. The effectiveness of differential curvature difference was verified in multiple damage localizations of bridges by a cable-stayed bridge example. The comparative advantage with respect to the previous mode method was assessed. Finally, some valuable suggestions for improving its robustness were also proposed. Results show that the method has certain advantages.
出处
《建筑科学与工程学报》
CAS
北大核心
2012年第3期68-72,共5页
Journal of Architecture and Civil Engineering
基金
国家重点基础研究发展计划("九七三"计划)项目(2002CB412709)
关键词
桥梁
损伤
定位
差分曲率
位移
自振频率
鲁棒性
bridge
damage
localization
differential curvature
displacement
self-vibration frequency
robustness
