基于荷载试验的在役钢管混凝土拱桥安全评估  

Safety evaluation of concrete-filled steel tubular arch bridge in service based on load test

作　　者：韩振国[1] HAN Zhenguo(School of Architectural Engineering,Taizhou Polytechnic College,Taizhou 225300,Jiangsu,China)

机构地区：[1]泰州职业技术学院建筑工程学院,江苏泰州225300

出　　处：《江西理工大学学报》2021年第4期19-28,共10页Journal of Jiangxi University of Science and Technology

基　　金：住房和城乡建设部科学技术项目(2017-K4-017);江苏省教育厅高校自然科学研究面上项目(17KJB560010);泰州职业技术学院科研项目(TZYKY-20-5,TZYKY-19-9)。

摘　　要：在现行规范理论与荷载试验基础上,建立在役钢管混凝土拱桥结构状态安全性评估模型,通过对评估模型进行理论加载分析,确定评估模型中各计算公式的技术参数值。阐述安全评估性指标的试验方法,对某在役钢管混凝土拱桥开展静力动力荷载试验,实测各种加载工况下在役桥梁的技术状况参数和吊杆索力数值,通过与理论数值进行对比分析,确定桥梁在役静力、动力性能是否满足安全要求。结果表明,该评估方法获得结论能够有效地反映出桥梁的实际使用情况,为后续桥梁运营阶段的养护维修和安全状态评估提供了实践参考。The safety evaluation model of existing CFST arch bridge is established on the basis of current code theory and load test.The technical parameters of each calculation formula in the evaluation model are determined through theoretical loading analysis of the evaluation model.This paper expounds the test method of safety evaluation index,carries out static and dynamic load test on a concrete-filled steel tubular arch bridge in service,measures the technical parameters and suspender cable force of the bridge in service under various loading conditions,and determines whether the static and dynamic performance of the bridge in service meets the safety requirements through comparative analysis with the theoretical value.The results show that the evaluation method can effectively reflect the actual use of the bridge and provide practical references for the maintenance and safety state evaluation of the subsequent bridge operation stage.

关 键 词：钢管混凝土拱桥 评估指标 静载试验 动载试验 安全性评估 

分 类 号：U446.3[建筑科学—桥梁与隧道工程]