叠溪藤桥设计.pdf

Advanced Materials Research Vols. 163-167 (2011) pp 268-273 Online available since 2010/Dec/06 at © (2011) Trans Tech Publications, Switzerland doi:10.4028//AMR.163-167.268 Structural Design and Analysis of a Steel Vine Bridge Haoyu Zhang1, 2,a, Wei Zhou3,b , Bing Gao2,c 1Institute of Engineering Mechanics, China earthquake administration 2JiLin Institute of Architecture and Engineering 3Harbin Institute of Technology a b c concretez@, zhouwei-hit@163.com, gaobing0431@126.com Keywords: Steel Footbridge; Structural Scheme; 3D Truss; Welding Joint; Foundation Connection. Abstract: A steel footbridge with a 27m net span, a worm-shaped curve and a vine bridge style was proposed to be constructed in Diexi city of Sichuan, China. Considering the appearance and the functional requirement, the bridge is designed as follows: the section outline is composed of 21 different ellipse-shaped transverse ribs with 1.5m spacing, and the transverse ribs are connected by 12 longitudinal ribs. Comparison between two optional structure schemes is carried out. Considering the mechanical performance and economy, the structure scheme, a truss structured system at lower part of the bridge, is adopted. Internal force analysis, member design and deformation calculation of the structure are accomplished. Finite elements analysis with ANSYS shows that the welded joints can meet the bearing capacity requirement. Connection between the bridge and the foundation platform is also presented in this paper. Introduction Songping Ditch in Diexi city of Sichuan, China, a place of beautiful scenery and comfortable climate, is favorable for leisure tourism. For the benefit of local tou