连续箱梁桥静动载试验效应的分析

THE STUDY OF CONTINUOUS BOX GIRDER BRIDGE STATIC AND DYNAMIC LOAD TEST EFFECT

以牡丹江东四桥静动载试验为工程依托,对该连续箱梁桥的静动载试验效应进行了分析,测得了在静载作用下跨中挠度和应变、支点应变,以及动载作用下结构的冲击系数、自振频率和竖向阻尼比,并与规范规定值或计算值进行了对比分析。分析结果表明,该桥具有良好的安全储备,本文的方法和结果对今后连续箱梁桥的静动载试验提供了一定的借鉴。

In this paper,the project relies on Mudanjiang East Four Bridge static and dynamic load tests, the continuous box girder bridge effect of static and dynamic load tests were analyzed. Under the static load test the mid-span deflection and strain, pivot strain, as well as under the dynamic load test the structures＇ impact factor, the vertical vibration frequency and damping ratio were measured, and with the specification value or calculated values were compared and analyzed. The results show that the bridge has a good safety reserves, this paper methods and results provide some reference for future continuous box girder bridge static and dynamic load tests.