| 钢管混凝土提篮拱损伤识别方法 |
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| 引用本文： | 谢开仲,林海瑛,梁寿宗. 钢管混凝土提篮拱损伤识别方法[J]. 广西大学学报(自然科学版), 2010, 35(1) |
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| 作者姓名： | 谢开仲 林海瑛 梁寿宗 |
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| 作者单位： | 同济大学桥梁工程系,上海,200092;广西大学土木建筑工程学院,广西,南宁,530004;广西华蓝设计(集团)有限公司,广西,南宁,530011;广西大学土木建筑工程学院,广西,南宁,530004 |
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| 基金项目： | 广西科学研究与技术开发计划项目(桂科攻0816006-7) |
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| 摘 要： | 为了对钢管混凝土提篮拱桥的损伤识别和诊断,建立了单圆管拱肋的空间有限元模型,并进行动力特性分析,利用空间曲线曲率模态差法对拱肋不同位置和不同程度的损伤工况进行识别和诊断。以一个钢管混凝土提篮拱桥作为算例,利用有限个测点和低阶振型对钢管混凝土拱肋不同位置和不同程度的损伤进行识别和诊断。研究结果表明:考虑空间效应的曲率模态差是提篮式拱桥拱肋损伤识别的有效方法,能准确识别多处损伤的情况;利用空间曲线曲率模态差法在桥梁现场布置若干测点测量的各振型位移模态能达到损伤诊断的目的;提出用空间曲线曲率模态差的变化方程对拱肋的损伤程度进行识别和诊断,适合用在钢管混凝土拱桥的健康监测系统中;空间曲线曲率模态差法通过位移自由度的退化,适合对平行拱和连续梁桥进行损伤识别和评估,具有通用性。
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| 关 键 词： | 钢管混凝土 拱桥 损伤识别 空间曲线 曲率模态差法 |
A method for damage detection of concrete-filled steel tube basket handle arch |
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| XIE Kai-zhong,LIN Hai-ying,LIANG Shou-zong. A method for damage detection of concrete-filled steel tube basket handle arch[J]. Journal of Guangxi University(Natural Science Edition), 2010, 35(1) |
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| Authors: | XIE Kai-zhong LIN Hai-ying LIANG Shou-zong |
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| Affiliation: | 1. Department of Bridge Engineering;Tongji University;Shanghai 200092;China;2. College of Civil and Architecture Engineering;Guangxi University;Nanning 530004;3. Hualan Design Co. Ltd;Nanning 530011;China |
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| Abstract: | In order to detect the damage of concrete-filled steel tube basket handle arch bridges,a finite element spatial model of a concrete-filled steel tube basket handle arch bridge was built and its natural vibration characteristics were analyzed. Damage of different degrees and different sites of arch-ribs were detected by the modal curvature difference method of spatial curve. Taking a con-crete-filled steel tube basket handle arch as an example for investigation,it was known that the method could detect accur... |
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| Keywords: | concrete-filled steel tube arch bridge damage identification spatial curve differences of curvature modal method |
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