桥墩FRP复合材料防撞套箱蝴蝶型连接结构可靠性研究  

Reliability of butterfly type connection structure of bridge pier FRP composite anti-collision sleeve box

作　　者：郑植 耿波[2] 袁佩[2] 尚军年[2] 魏思斯 胡正涛 ZHENG Zhi;GENG Bo;YUAN Pei;SHANG Junnian;WEI Sisi;HU Zhengtao(School of Civil Engineering,Chongqing University,Chongqing 400045,China;China Merchants Chongqing Communications Technology Research and Design Institute Co.,Ltd.,Chongqing 400067,China;Guangdong Donglei Expressway Management Center,Guangzhou 510000,China)

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]招商局重庆交通科研设计院有限公司,重庆400067 [3]广东省南粤交通东雷高速公路管理中心,广州510000

出　　处：《振动与冲击》2020年第1期281-288,共8页Journal of Vibration and Shock

基　　金：国家重点研发计划资助(2017YFC0806000);广东省交通运输厅科技计划项目(2016-02-005)

摘　　要：FRP复合材料防撞套箱各节段间连接方式的可靠性直接影响其防护性能。对一座双塔三跨斜拉桥过渡墩上复合材料防撞套箱所采用的一种蝴蝶型插销连接结构的可靠性进行研究,分别进行了材料性能试验,缩尺模型结构拉伸强度试验,并根据试验结果定义了正交各向异性本构。采用Midas Fea与LS-dyna对连接结构的可靠性分别进行静、动力分析。结果表明,该连接结构可靠性良好,可保证防撞套箱充分发挥防护性能。The reliability of connection mode among various segments of bridge pier FRP composite anti-collision sleeve box directly affects the box’s protective performance.Here,the reliability of a butterfly type thumb lock connection structure for composite anti-collision sleeve box used on transition pier of a 2-tower 3-span cable-stayed bridge was analyzed.The material performance tests and the scale model structure tensile strength tests were conducted for the butterfly type connection structure.Then,its orthogonal anisotropy constitutive was defined based on test results.Static and dynamic analyses were performed for the reliability of the connection structure using the software Midas Fea and LS-dyna,respectively.The results showed that the reliability of this type connection structure is good;it can ensure the FRP composite anti-collision sleeve box to give full play to the protective performance.

关 键 词：FRP 防撞套箱 连接 结构试验 数值模拟 

分 类 号：U443.26[建筑科学—桥梁与隧道工程]