木-混凝土组合梁T型截面设计方法

Design Methods of a Timber-concrete T-cross-section Beam

木-混凝土组合结构是通过剪力连接件将木梁与混凝土翼板连接成整体共同受力,其中木梁承受拉力,混凝土翼板承受压力,剪力连接件传递交界面上的纵向剪力,这样的组合方式大大提高了其强度和刚度,增强了其抗震性能和防火能力,还可以改善木结构房屋的隔音性能,同时又可以节约成本,提高技术经济效益。文章的设计方法是以文献[1]和文献[2]基于弹性分析的精确计算方法和近似计算方法为根据,特别是根据欧洲规范5给出基于极限状态的承载力的现代木结构与混凝土结构概念设计的规定和建议。

Wood-concrete composite beam is a new type of strucure in which the wood stucture and concrete struture are integrated by connectors to take advantadge of tension and compression respectively. This new composite style can apply the positive material properties of wood and concrete, while improve the technical and economic benefits. Here, the design procedures according to the theory of elasticity based on the exact method and approximate method are given,and particularly according to the regulations and recommendations of the modem concept for design of timber structures and concrete structures, given in Eurocode 5 and based on the limit states of bearing capacity and usability of structures.