桥道系结构形式对中承式钢管混凝土拱桥受力影响分析  

Mechanics Analysis of Half-through CFST Arch Bridges with Different Bridge Deck Types

作　　者：周水兴[1] 胡免缢[1] 周先颖 

机构地区：[1]重庆交通学院,重庆400074 [2]重庆市渝通公路工程总公司,重庆400060

出　　处：《公路交通科技》2005年第4期57-60,共4页Journal of Highway and Transportation Research and Development

基　　金：重庆市科委资助项目

摘　　要：在分析中承式钢管混凝土拱桥常用桥道系结构形式特点的基础上,首次提出一种新型的桥道系结构形式———简支连续组合桥道系,并运用大型结构有限元分析软件MSC Nastran进行数值仿真计算,研究不同桥道系结构形式对桥梁结构静、动力特征的影响。通过对比分析发现:不同桥道系结构形式对钢管混凝土拱肋的受力性能、结构的整体稳定性及动力性能的影响没有显著差异;简支连续组合桥道系较好地继承了简支和连续桥道系的优点,是中承式钢管混凝土拱桥的合理桥道系结构形式。Based on analyzing the characteristics of commonly used bridge deck systems for half-through concrete filled steel tube (CFST) arch bridges,the supported-continuous combinatorial bridge deck system,a kind of new type,was brought forward for the first time and calculated with MSC.Nastran software to study the influence of different types of bridge deck systems on the static and the dynamic characteristics.The results show that it makes no marked differences that the influence of different types of bridge deck systems on the inner force of CFST arch ribs,as well as the stability and dynamic performance of bridge structure.The other important conclusion is that the supported-continuous combinatorial bridge deck system inherits so much advantage from simply supported and continuous bridge deck systems that it is regarded as the best bridge deck system of half-through CFST arch bridge.

关 键 词：中承式钢管混凝土拱桥 桥道系结构形式 结构分析 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]