江界河大桥病害检测及成因分析

Jiangjiehe Bridge Disease Inspection & Cause Analysis

对运营20余年的江界河大桥外观病害进行全面检测,获得该桥的技术状况等级。使用桥梁博士软件对该桥结构进行有限元分析,确定其静动载试验的各种最不利工况及加载载位,并根据其现场静动载试验,得出其各加载工况下的相应挠度、应变等参数。基于病害检测结果对桥梁承载能力进行评定,并对该桥的病害成因进行分析。

This paper introduces overall inspection to appearance disease of Jiangjiehe Bridge that has been operating for 20 years, so to acquire technical status of this bridge. We use Dr. Bridge software to carry out finite element analysis to structure of this bridge and determine the most unfavorable conditions and loading positions with static/dynamic load tests. Based on site static/dynamic load tests,we get relative flexibility and strain parameters under all loading conditions. Based on disease inspection, we give evaluation to bridge bearing capability and give analysis to cause of the disease.