胶合木桁梁桥结构设计与计算

Structural Design and Calculation of Glulam Truss Bridge

为了发展我国现代胶合木结构桥梁、提高木桥的建造技术,设计了一座我国目前最大跨径的胶合木桁梁桥,跨径30 m。介绍了木桥的总体布置、桁梁构件及螺栓连接设计;采用结构有限元软件,建立木桁梁桥空间计算模型,按规范进行了结构自重、人行荷载、风载、雪荷载及其组合作用下的内力与变形分析,验算了结构强度与刚度。结果表明:木桥结构强度与刚度均满足规范要求,结构设计合理。研究成果可为同类桥梁工程设计提供参考。

In order to develop modern glulam structure bridge in China and improve the construction technology of wooden bridge,A glulam truss bridge with the largest span in China at present is designed in this paper,with a span of 30 m.The overall layout of wooden bridge,truss beam components and bolt connection design are introduced.The finite element software of structure is used to establish the space calculation model of the wood truss bridge,and the internal force and deformation analysis of the dead weight,pedestrian load,wind load,snow load and their combined action are carried out according to the norms,and the structural strength and stiffness are checked.The results show that the structural strength and stiffness of the wooden bridge meet the requirements of the code,and the structural design is reasonable.The research results can provide reference for similar bridge engineering design.