正交异性钢桥面板肋-板处裂纹扩展特性研究  

Study on the Properties of Crack Propagation for Rib-to-deck Welded Joints of Steel Bridge Deck

作　　者：颜攀 刘嘉[2] YAN Pan;LIU Jia(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China;Hubei Key Laboratory of Roadway Bridge and Structure Engineering,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070 [2]武汉理工大学道路桥梁与结构工程湖北省重点实验室,武汉430070

出　　处：《建材世界》2019年第6期51-54,共4页The World of Building Materials

基　　金：国家自然科学基金(51108363);道路桥梁与结构工程湖北省重点实验室(武汉理工大学)开放课题基金资助项目(DQJJ201707)

摘　　要：基于扩展有限元的方法,结合ABAQUS软件,进行正交异性钢桥面板肋-板试件模型在疲劳荷载下裂纹的三维扩展模拟,初始裂纹为肋-板焊趾位置处的半椭圆形裂纹,并采用Forman公式评估其剩余寿命。分析结果表明半椭圆形裂纹在扩展过程中形状会逐渐变得扁平;裂纹扩展后的形状以及平面外偏转也说明了不能忽略Ⅱ型和Ⅲ型裂纹的影响。Based on the extended finite element method and ABAQUS software,the three-dimensional propagation simulation of the semi elliptical crack in the rib-plate specimen model of orthotropic steel bridge deck under the fatigue load is carried out,and the remaining life is evaluated by Forman formula.The results show that the shape of semi-elliptical crack will gradually become flat during the expansion process;the shape after crack propagation and the out-of-plane deflection also indicate that the influence of typeⅡand typeⅢcracks cannot be ignored.

关 键 词：桥梁工程 扩展有限元法 疲劳裂纹 正交异性钢桥面板 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]