摘要
主要研究恩施龙桥特大桥上承式钢管混凝土拱桥的动力特性,并分析了主拱圈含钢率、横撑面积变化、桥面宽度变化几个因素对上承式拱桥的频率影响。通过分析得知:上承式钢管混凝土拱桥的桥面与主拱圈的振动基本一致;主拱圈的含钢率与横撑面积变化对横向刚度影响不明显,而可通过适当增加桥梁宽度来提高桥梁的横向刚度。
This paper mainly studies the dynamic characteristics of Longqiao Bridge （a deck type concrete-filled steel tubular arch bridge） in Enshi,and analyzes the impact of main arch steel ratio, transverse support area,deck width on frequency of the deck type arch bridge. It could get that by analysis：the vibration of bridge deck and the main arch of the deck type concrete-filled steel tubular arch bridge is basically identical;and the main arch steel ratio and the cross area is not obvious influence on transverse stiffness ; and the transverse stiffness of the bridge can be increased through the appropriate increasing the bridge width.
出处
《建材世界》
2013年第6期29-32,共4页
The World of Building Materials
关键词
钢管混凝土
拱桥
动力特性
刚度
concrete-filled steel tubular
arch bridge
dynamic characteristics
stiffness
