连续曲线钢箱梁荷载试验及有限元分析

为评价吉林省长春市某快速路变截面连续钢箱梁桥的承载能力,结合实际工程建立有限元模型,并对该钢箱梁进行静载及动载试验检测.系统地介绍了检测方法和过程,测量不同截面在各级荷载工况下的应变,进而分析鉴定箱梁实际的极限承载能力,并对实测数据与MIDAS模型计算的理论值进行对比分析.结果表明,钢箱梁满足承载能力的设计要求,可为类似桥梁的设计及荷载试验提供参考.

Load Test and Finite Element Analysis of Continuous Curved Steel Box Girder

In order to evaluate the bearing capacity of a variable cross-section continuous steel box girder bridge on an expressway in Changchun City, Jilin Province, The finite element model of the steel box girder is established and the static and dynamic load tests are carried out by the authors. The detection method and process are systematically introduced, the strain of different sections under various load conditions is measured, and the actual ultimate bearing capacity of the box girder is analyzed and identified, and the measured data is compared with the theoretical value calculated by the MIDAS model. The results show that the steel box girder meets the design requirements of the bearing capacity and provides a reference for the design and load test of similar bridges.