连续钢箱梁桥成桥静动力试验分析

Static and Dynamic Load Test and Analysis of Continuous Steel Bridge

利用有限元软件对一变截面连续钢箱梁桥进行有限元分析,对该桥在试验荷载作用下的应变、挠度、自振频率、冲击系数等参数进行了研究。同时对连续钢箱梁桥承载能力评定方法进行了详细的介绍。经过试验数据与理论计算结果的对比分析可知,该桥结构强度和刚度良好,抗冲击性能满足设计要求。另外,通过试验分析掌握了桥梁在设计荷载作用下的实际工作状态及动力特性,为以后桥梁运营管理提供科学依据。

In this paper, a continuous steel box girder bridge with variable cross-section is simulated by a finite element software. The parameters of strain, deflection, natural frequency, impact coefficient of the bridge under the test load are studied. The carrying capacity evaluation methods of continuous steel bridges are described in detail. According to the contrastive analysis of experimental data and theoretical results, the strength and stiffness of the bridge structure are very well, and the impact resistance of the bridge meets the design requirements. In addition, the actual working state and the dynamic characteristics of the bridge under the design load, which can provide scientific basis for the bridge operation and management, are mastered with the experimental analysis