达板五主肋三联双曲拱桥静动力性能检测  

The Static & Dynamic Behavior Test on Danban Three Leagues Two-way Curved Arch Bridge with Five Ribs

作　　者：鲜文博[1] 刘世忠[1] 杨子江[1] 包振华 

机构地区：[1]兰州交通大学甘肃省道路桥梁与地下工程重点实验室,甘肃兰州730070 [2]甘肃省交通科学研究院有限公司,甘肃兰州730050

出　　处：《兰州交通大学学报》2012年第4期21-25,共5页Journal of Lanzhou Jiaotong University

基　　金：国家自然科学基金(50968008);甘肃省道路桥梁与地下工程重点试验室开放基金(Kfjj-10-01)

摘　　要：通过对达板五主肋三联双曲拱桥进行的荷载试验,分别对其进行了静力性能和动力性能的研究和分析.首先对达板桥三联的拱圈线形及混凝土回弹情况进行了考察,判定其塑性变形量和混凝土强度.其次试验分两个工况分别选取达板桥中跨跨中截面及拱脚截面作为测试截面,着重分析了试验荷载作用下的结构校验系数、残余应变及残余变形.最后通过模态分析得到了达板桥的自振频率,通过分析跑车、跳车及刹车试验得到了抗冲击性能.综合以上分析结果得出达板五主肋三联双曲拱桥的静动力性能良好.The static ＆ dynamic behavior of Daban three leagues two-way curved arch bridge with five ribs has been studied and analyzed according to load test. Firstly, the arch line shape of three leagues and concrete rebound have been inspected to observe plastic deformation and concrete strength of the bridge. Then two loading cases are adopted,one loading case is midspan of second league,the other is arch springing of second league, to analyze structure calibration coefficient and overstrain ＆ residual deformation. Finally through mode analysis, the natural frequency of vibration is obtained, and the shock resistance has been studied by vehicle running, vehicle bumping ＆ vehicle braking test. To summarize all above, the static dynamic behavior of Daban three leagues two-way curved arch bridge with five ribs is concluded to be fine.

关 键 词：五主肋三连双曲拱桥 荷载试验 静力性能 动力性能 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]