翼缘刚接混凝土T梁桥结构体系损伤评价研究  

Research on Damage Assessment of Rigid-jointed Concrete T-beam Bridge System

作　　者：姚晓飞[1] 徐岳[1] 丁怡洁[2] 付迎春[1] 

机构地区：[1]长安大学旧桥检测与加固技术交通行业重点实验室,西安710064 [2]西安建筑科技大学土木学院,西安710054

出　　处：《武汉理工大学学报》2010年第1期169-173,共5页Journal of Wuhan University of Technology

基　　金：西部交通建设科技项目(200531822316;200631822302-04)

摘　　要：以16 m跨径的T梁桥标准图为基础,按1:4的缩尺比例,采用焊接钢板的连接方法设计了一座5片T梁桥模型。通过不同的钢板连接方式,对横向连接损伤对翼缘刚接T桥梁桥承载能力的影响进行了试验和有限元分析,研究了不同损伤工况对翼缘刚接T梁桥荷载横向分配的影响。提出了活载横向分布调整系数,为现实中的T梁桥承载能力评估、加固提供定量的评判标准,为损伤状态下刚接梁桥的体系可靠性评估提供借鉴。At present,in rigid-jointed concrete T-beam bridges,there are some diseases such as transverse connection is weak or degenerating.Those problems have become an important factor limiting the bearing capacity.So the effect of damaged transverse connection to rigid-jointed concrete T-beam bridges is researched through model experiment and finite element analysis.On the basis of standard drawing of 16 m T-beam bridge,one 4 m prefabricated concrete model T-beam bridge by using of welding steel plate is designed.The impacts of different condition for transverse load distribution are discussed.And live load adjustment coefficient is put forward,which can provide quantitative evaluation standard for bearing capacity evaluation and strengthening,and provide reference for system reliability assessment in the practical rigid-jointed beam bridges.

关 键 词：桥梁工程 横向连接损伤 混凝土T梁桥 刚接 活载横向分布调整系数 

分 类 号：U445[建筑科学—桥梁与隧道工程]