[1]缪长青,李爱群.异形钢管混凝土系杆拱桥结构健康监测系统[J].东南大学学报(自然科学版),2011,41(6):1241-1246.[doi:10.3969/j.issn.1001-0505.2011.06.022]
 Miao Changqing,Li Aiqun.Structural health monitoring system for special-shaped concrete-filled steel tubular arch bridge[J].Journal of Southeast University (Natural Science Edition),2011,41(6):1241-1246.[doi:10.3969/j.issn.1001-0505.2011.06.022]
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异形钢管混凝土系杆拱桥结构健康监测系统()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第6期
页码:
1241-1246
栏目:
交通运输工程
出版日期:
2011-11-20

文章信息/Info

Title:
Structural health monitoring system for special-shaped concrete-filled steel tubular arch bridge
作者:
缪长青李爱群
(东南大学土木工程学院, 南京 210096)
(东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096)
Author(s):
Miao ChangqingLi Aiqun
(School of Civil Engineering, Southeast University, Nanjing 210096, China)
(Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, China)
关键词:
桥梁工程 结构健康监测 传感器优化布设 异形拱桥 结构预警与安全性评估
Keywords:
bridge engineering structural health monitoring sensor optimization layout special-shaped arch bridge structure pre-warning and safety-assessment
分类号:
U448.2
DOI:
10.3969/j.issn.1001-0505.2011.06.022
摘要:
针对异型拱桥结构特点和养护管理的需求,提出了在线监测系统与人工巡检系统相结合的综合监测策略.采用多尺度结构有限元分析方法,分别进行了大桥静动力响应分析、构件重要性与易损性分析和复杂区域结构响应敏感性分析.在此基础上,综合大桥的环境特点与运营条件、结构评估需求、优化布设理论等因素,进行了FBG等传感器布置.提出了以结构第一传力体系静力参数为主、动力参数为辅的构建结构状态预警与安全评估指标的策略; 采用趋势分析法,建立了大桥运营状态预警系统; 基于子结构法和局部损伤评估方法建立了复杂区域状态安全性评估方法.
Abstract:
Abstract:According to the special-shaped arch bridge structural characteristics and the requirements of maintenance and management, comprehensive monitoring strategies based on the combination of automated on-line monitoring system and artificial inspection system are proposed. The static and dynamic response, the importance and the vulnerability of components in structural safety, the sensitivity of stress response in the key regions are analyzed by using the multiple scale FEA(finite element analysis). Based on this, sensors such as FBG(fiber bragg grating) are arranged, considering the combination of factors including the environmental characteristic and the operation conditions of the bridge, the demand of structural assessment, the theory for optimizing layout, etc. A state warning and safety-assessment method of the structure is put forward, which takes structural static parameter as priority and dynamic parameter as supplement. The bridge operation pre-warning system for abnormal state is proposed using the trend analysis method. The state safety-assessment method for the key stressed regions is set up on the basis of substructure method and local damage assessment method.

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备注/Memo

备注/Memo:
作者简介: 缪长青(1963—),男,博士,副教授,chqmiao@163.com.
基金项目: “十一五”国家科技支撑计划重点资助项目(2009BAG15B03)、国家自然科学基金面上资助项目(51078080).
引文格式: 缪长青,李爱群.异形钢管混凝土系杆拱桥结构健康监测系统[J].东南大学学报:自然科学版,2011,41(6):1241-1246. [doi:10.3969/j.issn.1001-0505.2011.06.022]
更新日期/Last Update: 2011-11-20