摘要
增城大桥主桥为一跨径为(30+100+30)m的中承式斜靠拱桥,桥型新颖,结构复杂,本桥采用刚性系杆主纵梁作为平衡主拱肋水平推力的主要构件,两片主拱肋通过固定横梁相连接,主拱肋、主纵梁及固定横梁三个构件相交形成一个拱梁大节点,此节点的设计对本桥非常重要。本文主要介绍了主拱肋、主纵梁及固定横梁相交处拱梁大节点的设计思路及局部受力分析。
The main bridge of Zengcheng Bridge is a half-through oblique-against arch bridge with a span of(30+100+30)m,which is more original in structural configuration and more complicated in constructional formation compared with other bridges of its type.This bridge applies the rigid tie bar as the principal component to balance the horizontal thrust of the two arch rib,which are combined by the fixed transverse beam.The major beam-arch joint is formed by the intersection of main arch rib,the primary longitudinal girder and the fixed transverse beam.Therefore,this three-dimensional joint design is of critical importance.Hereby this paper mainly presents the general design thinking of major beam-arch joint and the key points of local force analysis as well.
出处
《广东土木与建筑》
2012年第12期36-38,共3页
Guangdong Architecture Civil Engineering
关键词
拱梁大节点
构造处理
焊接工艺
局部受力分析
major beam-arch joint
construction treatment
welding technology
local stress analysis
