摘要
木拱廊桥在中国乃至世界桥梁史上是一种独有的创造,它有着独特的构造特点与结构受力性能。运用Sap2000分析软件,对享有世界第一跨度的浙江丽水九龙国家湿地九龙木拱廊桥进行精细建模,研究廊桥在不同荷载工况下的结构内力和挠度,并对分析结果进行对比。分析结果表明,"三节苗"与"五节苗"在2类工况下均能实现各杆轴力均匀变化,而弯矩、剪力相对较小,实现了拱结构受力机制。
Timber arch lounge bridge is a unique creation in the history of China and even the world,it has a unique structure characteristics and structural performance. By using the finite element analysis software Sap2000,a refined modeling has been carried out,for Jiulong Wood Arch Lounge Bridge in Zhejiang Lishui Jiulong National Wetland,which enjoys a worldwide reputation as a first long-span bridge. The structural internal force and deflection under different load conditions were measured and studied. The results show that ＂Three bar＂and ＂five bar＂under two kinds of working conditions can both realize the uniform axial force changes,while the bending mom ent,shear force were relatively small,thus realizing the mechanism of arch structure.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2014年第8期86-89,共4页
Journal of Central South University of Forestry & Technology
基金
国家林业公益性行业科研专项资助(编号:201304504)
湖南省自然科学基金委员会与湘潭市政府自然科学联合基金资助(编号14JJ5012)
关键词
大跨木拱廊桥
拱结构
数值模拟
内力分析
wood arch lounge bridge with large span
arch structure
numerical simulation
internal force analysis
