现代竹结构技术在人行天桥中的研究与应用  

Research and Application of Modern Bamboo Structure Pedestrian Bridge

作　　者：单波[1] 周泉[1] 肖岩[1,2] 

机构地区：[1]湖南大学土木工程学院现代竹木及组合结构研究所,湖南长沙410082 [2]南加州大学土木系,洛杉矶ca90089

出　　处：《湖南大学学报（自然科学版）》2009年第10期29-34,共6页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(50848044);长江学者创新团队计划(IRT0619)联合资助

摘　　要：提出了一种以胶合竹板为基本材料的现代竹结构人行桥梁,并通过3根足尺试件的试验,研究了短薄胶合竹板制成长梁的成型工艺和构件的力学性能.试验显示竹梁的破坏是由受压区竹材分层导致对接头错位引起的,FRP增强层对竹梁的强度有所提高.试验结果表明,采用短板拼接、整体胶合成型的大尺寸竹梁刚度和承载力均能满足人行桥建设的要求.根据试验和分析结果,作者们采用预制装配方式建造了一座现代竹结构人行天桥,并在建造中对竹结构人行桥采取了整体防水处理.该桥经过一年多的使用,主体结构正常.A new type of bridge structure named modern bamboo structure pedestrian bridge was addressed. The main structural elements are laminated bamboo veneer sheets. Three full-scale bamboo beams were tested in order to study the processing methods and the mechanical performance of model beams. The failure of beams was caused by the delamination of laminated bamboo sheet or joint fracture in the mid-span zone. The CFRP sheet in the tensile side of beam showed effect on the increase of capacity. The bamboo beam, manufactured with short laminated bamboo sheet, had enough stiffness and loading capacity for building pedestrian bridges. Based on the test and analysis, a modern bamboo pedestrian bridge, probably the first of its kind in the world, was constructed successfully by using a prefabricated procedure. The integrated water proof measure was used in the pedestrian bridge. The bridge has been functioning well for more than one year.

关 键 词：人行天桥 现代竹结构 胶合竹板 

分 类 号：TU366.3[建筑科学—结构工程]