正交异性钢桥面沥青铺装受力特征的有限元分析

Analysis of the Asphalt Pavement on Orthotropic Steel Bridge Deck by Using FEM

分析国内外钢桥沥青铺装使用状况与直道试验结果发现,疲劳开裂是正交异性钢桥面沥青铺装破坏的主要形式之一。本文应用有限元方法分析直道试验钢桥模型,针对加劲肋顶部出现纵向疲劳裂缝的实际情况,对应变及相关因素进行研究,对比计算结果与直道试验结果,验证计算的正确性,得到相关的图表公式。

It has been found from the analysis of the using status of steel bridge asphalt pavement built at home and abroad and the result of straight track test ,the fatigued crack is a major destruction mode of the asphalt pavement on orthotropic steel bridge deck.In this paper,the steel bridge model which has been used in straight track test is analyzed by using Finite Element Method (FEM).Based on the fact of longitudinal fatigue crack at top of strengthen rib,the distribution of the strain and some relevant factors is studied.The calculation is compared with the result of straight track test.The accuracy of the calculation is proved and some related graphic and formulation is got.