梁格法在钢箱梁桥型荷载试验中的应用

Application of Grillage Method in Steel Box Beam Bridge Load Experiment

摘要:

在钢箱梁的荷载试验中，利用梁格法建模分析与实测试验结果进行对比，通过两者在不同荷载试验工况下的挠度和应变的变化趋势和结构振型，分析梁格法在该结构下的可行性。结果表明，在静载试验中两种曲线的趋势基本相同，在动载试验中两种振型基本相似，说明梁格法具有较高的实用性和准确性。

Abstract:

In the load experiment of steel box beam, the grillage method is used to establish the analysis model. The result is compared with the measured test results. Through the variation trends and structural vibration modes of both deflection and strain under the different load test conditions, the feasibility of the grillage method in this structure is analyzed. The result shows that the trends of two curves are basically same in the static load test, and two vibration modes in the dynamic load test are basically similar, which explain that the grillage method has the higher practicability and accuracy.