摘要
对一种新型板拱人行天桥进行了力学分析,以说明该新型结构的可靠性。此天桥以板拱结构代替了梁柱结构,以跨过道路的桥为主拱,上桥斜梯为副拱,主拱斜撑在副拱顶部,无梁无柱,除人行梯板之外别无他物。主拱采用钢结构或钢筋混凝土结构,副拱采用钢筋混凝土结构,主拱可跨越70m跨度以上,其矢高为1/14。研究使用证明:该天桥的结构设计较之其他同类天桥具有明显的新颖性和应用价值。
<Abstrcat> In this paper, mechanical aualysis is carried out to evalute the validty of new type of pedestrian bridge. The new pedestrian bridge uses the board arch structure to replace the girder pole structure. The striding road bridge is the main arch. The up going inclined ladder is the associate arch. The main arch holds the associate arch top. There is no girder or pole. There is no other things except the walking ladder. The main arch can stride over 70m the arrow height is 1/14, and it can be applied to reliability of the new structure from analyzing the rules of internal force.
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2005年第3期93-96,共4页
Journal of Railway Science and Engineering
关键词
人行天桥
主拱
副拱
拉梁
pedestrian bridge
main arch
associate arch
draught pole
