摘要
阿联酋Boulevard桥拱肋之间没有设置横撑,因此拱肋平面外稳定成为控制设计的关键因素之一。基于此,采用Midas/civil软件建立有限元计算模型,考虑4种极限荷载状态组合,针对施工阶段和使用阶段,对尼尔森体系拱桥的结构设计、稳定性及动力特性进行分析与讨论。同时介绍横梁与系梁连接节点、系梁连接节点和拱肋连接节点的局部构造和处理方法。结果表明设计分析均满足现行规范要求。
The braces are not set up between arch ribs of Boulevard bridge in United Arab Emirates, so that the out-of-plane stability of arch ribs becomes one of key design factors. Based on the characteristics, finite dement wold is established by use of Midas/civil software. Considering four ultimate load combinations, structural design, stability and dynamic characteristics of Nielsen system are analyzed and discussed. Besides, local structure and treatment methods about joints between cross beam and connection beam, joints of connection beams and joints of arch ribs. The results show design and analysis can meet the requirements of current codes.
出处
《施工技术》
CAS
北大核心
2009年第3期77-79,共3页
Construction Technology
关键词
桥梁
拱桥
尼尔森体系
设计
分析
bridge
arch bridge
Nielsen system
design
analysis
