镇江体育会展中心综合训练馆组合网架楼盖结构设计

Design of the composite grid structure in the multifunctional training gymnasium of Zhenjiang Sports and Exhibition Center

研究了镇江体育会展中心综合训练馆组合网架楼盖中钢与混凝土之间的共同作用,并对不同板厚的受力情况进行了几何参数分析,确定了该工程的经济板厚的取值范围。考察了楼板厚度对结构自振频率和挠度的影响,分析表明考虑了混凝土板的组合作用后,结构自振频率显著增大,挠度显著降低,但结构自振频率和挠度并不随板厚的增加而线性改善;当板厚达到一定数值后,由于自重增加,引起自振频率降低,挠度值增大。介绍了网架与混凝土楼板之间连接节点的设计,为类似结构的设计提供参考。

Interactive behavior between steel and concrete of a composite grid in the multifunctional training gymnasium of Zhenjiang Sports and Exhibition Center was investigated,and parameter analysis of the influence of concrete slab thickness was conducted to determine the economical range of slab thickness.Relationship between slab thickness and its natural frequency and deflection was researched.The results show that the natural frequency increases and deflection decreases obviously with the combination of concrete slab,but the natural frequency and deflection don＇t change linearly with its thickness.When the thickness reaches a limit,as weight increases,its natural frequency will decrease and the deflection will increase.Design of connection joints between steel grid and concrete slab was also presented,which could be reference for similar structures.