某独塔双索面半漂浮体系斜拉桥静载试验应用研究  

Study on Static Load Test and Application of a Single Tower Double Cable Plane Semi Floating-stayed bridge

作　　者：李海涛 王乐 LI Haitao;WANG Le(Anhui Provincial Highway Engineering Testing Center,Anhui Key Laboratory of Bridge andTunnel Engineering Testing,Hefei,Anhui 230051)

机构地区：[1]安徽省公路工程检测中心 [2]桥梁与隧道工程检测安徽省重点实验室,安徽合肥230051

出　　处：《现代工程科技》2022年第7期47-51,共5页Modern Engineering Technology

摘　　要：某独塔双索面半漂浮体系人行天桥跨径布置为(135+135)m,为了解该人行天桥承载能力,掌握和判断桥梁的实际工作状况是否符合设计要求或处于正常受力状态,利用MIDAS/Civil有限元计算分析软件建立该桥空间有限元模型并进行静动力计算分析。以水袋法的加载方式进行加卸载,通过静载试验测试各个控制截面的应变、挠度、位移和模态试验,并将测试结果与理论计算结果进行分析对比。结果表明,其应变、挠度校验系数、最大相对残余变形均符合规范和理论值要求,说明结构在试验荷载作用下处于较好的弹性工作状态。模态试验表明该桥整体刚度较好,满足设计荷载标准,所采用的试验加载方式是可行的。该结果为今后同类型的桥梁荷载试验提供了参考依据,为同类型桥梁的设计提供真实的结构案例[2]。The span of a single tower double cable plane semi floating system footbridge is(135+135)M.in order to understand the bearing capacity of the footbridge,master and judge whether the actual working condition of the bridge meets the design requirements or is in a normal stress state[1],the spatial finite element model of the bridge is established by using midas/civil finite element calculation and analysis software,and the static and dynamic calculation and analysis are carried out.The loading and unloading are carried out by the water bag method.The strain,defl ection,displacement and modal tests of each control section are tested through the static load test,and the test results are analyzed and compared with the theoretical calculation results.The results show that the strain,defl ection verifi cation coeffi cient and the maximum relative residual deformation meet the requirements of the specifi cation and theoretical values,indicating that the structure is in a good elastic working state under the test load,The modal test shows that the overall stiff ness of the bridge is good,meets the design load standard,and the test loading method adopted is feasible,which provides a reference basis for the load test of the same type of bridge in the future,and provides a real structural case for the design of the same type of bridge[2].

关 键 词：独塔双索面斜拉桥 静载试验 校验系数 挠度 

分 类 号：TB3[一般工业技术—材料科学与工程]