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桥面沥青混凝土铺装层破坏和力学模型研究

发表时间:2008-05-15  浏览量:2023  下载量:936
全部作者: 张家峰,朱士东,韩永
作者单位: 天津水泥工业设计研究院有限公司;江苏省交通科学研究院;河海大学土木工程学院
摘 要: 近年来,桥面铺装问题造成的直接和间接经济损失已经引起研究者的重视。本文总结了混凝土桥沥青铺装层的常见破坏类型,并且结合某一斜拉桥工程,以线弹性分析理论为基础,以通用有限元分析软件ABAQUS为计算分析工具,将桥面板及其加筋部件和沥青混合料铺装层作为统一的力学分析体系,运用三维有限元法对桥面铺装的层间剪应力、铺装层内部拉应力及其表面的弯沉位移进行初步计算分析,并且进行荷载计算找出对铺装层受力最不利的部位。在深入研究桥面系受力的基础上,探讨了如何建立科学合理的力学模型来分析其实际应力及应变状态,最后提出了在今后的理论研究中需要解决的问题。
关 键 词: 桥梁工程;桥面铺装;有限元法;沥青混凝土;力学模型
Title: Mechanical model research and damnification of bridge deck pavement of the asphalt concrete bridge
Author: ZHANG Jiafeng, ZHU Shidong, HAN Yong
Organization: Tianjin Cement Industry Design and Research Institute Co., Ltd.;Jiangsu Transportation Research InstituteJiangsu Transportation Research Institute
Abstract: Recently, direct and indirect economic losses caused by damnification of bridge deck pavement have attracted the attention of researchers. In this paper, the frequent damnification types have been summarized in pictures, and introduced with a real cable-stayed bridge. The paper takes bridge panel and its parts and deck pavement of the asphalt as a whole into account to analyse based on linear-elastic analysis theory, through ABAQUS FEM. Then the paper elementarily analyses shearing strength between layers, pulling strength in the pavement and skin-deep displacement by 3-Dimention FEM, and finds out the worst disadvantageous part through load calculation. On the basis of in-depth study of the loads on bridge deck department, the problem that how to establish a scientific and reasonable mechanical model has been generally discussed to analyze actual state of stress and strain of bridge deck pavement. At last, the paper brings some problems which are in need for solving in the following theory research.
Key words: bridge engineer;bridge deck pavement;finite element method(FEM);asphalt concrete;mechanical model
发表期数: 2008年9月第9期
引用格式: 张家峰,朱士东,韩永. 桥面沥青混凝土铺装层破坏和力学模型研究[J]. 中国科技论文在线精品论文,2008,1(9):1035-1039.
 
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