交通运输研究Issue(5)：82-88,7.DOI:10.16503/j.cnki.2095-9931.2015.05.012
基于结构检算方法的梁式桥梁结构快速安全性综合评估系统
A Rapid Comprehensive Safety-Assessment System of Beam Bridge Structure Based on Structure Checking Method
摘要
Abstract
In order to solve the problems of the traditional bridge structure bearing capacity evaluation method, a rapid safety-assessment method was established to evaluate the working condition of pre-stressed simple-supporting hollow bridge. Firstly, based on the theory recommended by the national bridge codes, a load-simulating system was developed instead of static loading tests, on which the bridge structure bearing capacity and stiffness calculation system was set up. Secondly, through the field inspec⁃tion and detection means, some technical information about the current staus of bridge structure bearing capacity was obtained, which determine the technical parameters of the calculation system and develop appropriate analysis system to satisfy the actual bearing capacity of the bridge structure. Finally, combin⁃ing the bearing capacity and stiffness calculation system and the analysis system, a series of evaluation parameters that reflect actual bearing capacity and stiffness of bridge structure were calculated and ob⁃tained, which ultimately realized the rapid safety-assessment of bridge structure. Meanwhile, after com⁃paring with the data earned from the field test, the results show that the computed value is slightly higher than the test value, which takes out a certain degree of conservativeness. Both groups of figures share a similar trend, verifying the reasonability and the accuracy of the supporting theory. The method was then applied to an in-service pre-stressed simple-supporting hollow bridge, and obtained the report that the existing bearing capacity and stiffness of the bridge are less than those of the design. The calculation ex⁃ample successfully proves the bridge can fully meet the requirements of continuing operation.关键词
检算方法/评估参数/安全性综合评估/承载能力/刚度Key words
checking method/evaluation parameter/comprehensive safety-assessment/bearing ca-pacity/stiffness分类
交通工程引用本文复制引用
朱金华,艾军,蔡晨宁,于超凡..基于结构检算方法的梁式桥梁结构快速安全性综合评估系统[J].交通运输研究,2015,(5):82-88,7.基金项目
江苏省宿迁市交通科学研究项目 （）
