摘要
通过对国内外大跨径连续刚构桥铺装层技术领域研究成果和发展趋势的分析和总结,研究了设计缺陷,施工质量以及交通荷载环境等因素对连续刚构桥桥面铺装层耐久性的影响。针对铺装层病害的机理,主导原因和病害的分类方法以及铺装层结构设计存在的问题等进行了较为全面的剖析。分析结果表明:连续刚构桥桥面铺装的耐久性除了取决于铺装材料本身的强度和疲劳性能,更取决于铺装层结构、材料与桥面板的适应性;铺装层及桥面板的综合设计、施工质量和工艺的保障是铺装层耐久性的关键;现有文献对连续刚构桥桥面铺装层有限元计算尚有缺陷和不合理之处,为了给今后的工程实践和相关规范提供更可靠的数据,应对现有分析采用的有限元实体模型及其边界条件进行研究和完善。
Through the analysis and summary of research status and development trend of deck pavement technology of longspan continuous rigid frame bridge deck pavement at home and abroad,the influence of factors such as design flaw,constructional quality and traffic load on the durability of continuous rigid frame bridge deck pavement was studied. Aiming at the mechanism of the deck pavement disease,the cause of disease,the classification method of disease and the structure deficiency in the deck pavement design were comprehensively analyzed. The analysis results show that： the durability of continuous rigid frame bridge deck pavement not only depends on the strength and fatigue performance of pavement material,but also on the pavement structure,the material and the adaptability of the bridge deck. The integrated design of pavement and bridge deck,construction quality and craft are the guarantee of deck pavement durability. Besides,the finite element calculation of continuous rigid frame bridge deck pavement still has some imperfection and unreasonableness in current literatures. In order to provide more credible data for the future engineering practice and the relevant standard,the proposed finite element model and its boundary conditions should be studied and improved.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2016年第1期16-21,共6页
Journal of Chongqing Jiaotong University(Natural Science)
基金
陕西省自然科学基金项目(2013GM7002)
关键词
桥梁工程
连续刚构桥
桥面铺装
耐久性
有限元分析
bridge engineering
continuous rigid frame bridge
deck pavement
durability
finite element analysis
