钢箱混凝土准结合梁焊缝疲劳寿命评估  

Fatigue life estimation of welding seams of steel-concrete quasi-bond box girder

作　　者：甄晓霞[1] 王荣辉[1] 瞿尔仁[2] 任国红[2] 

机构地区：[1]华南理工大学交通学院,广东广州510640 [2]合肥工业大学土木建筑工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2004年第7期778-782,共5页Journal of Hefei University of Technology：Natural Science

摘　　要：文章根据广州市内环线恒福路段的交通量调查结果,推导得出了恒福路段高架桥的标准车辆荷载谱,采用MSCPatran软件建立有限元模型,利用标准车辆荷载谱对该桥进行加载,应用MSCNastran、MSCFatigue软件进行有限元分析和疲劳寿命评估二者的整合,对钢箱混凝土准结合梁焊缝进行了疲劳寿命评估,得出合理结论,为该类型桥梁的疲劳问题求解提供了实用计算方法。The load frequency spectrum of Hengfu Bridge is deduced on the basis of the traffic survey on Hengfu Road in the inner beltway of Guangzhou City,the finite element model of this bridge is established by using the software MSC Patran and the loads on this bridge are given according to the load frequency spectrum. An analysis of the fatigue life of the welding seams of the steel-concrete quasi-bond box girder is carried out based on the integration of finite element analysis and fatigue life estimation by adopting the softwares MSC Nastran and MSC Fatigue,and reasonable results are obtained. This study provides a practical calculation method for solving the fatigue problems of this kind of bridges.

关 键 词：准结合梁 焊缝 疲劳寿命评估 

分 类 号：U441.4[建筑科学—桥梁与隧道工程] U399[交通运输工程—道路与铁道工程]