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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。
The interaction between steel and concrete in the composite truss of combined training base in Zhenjiang Sports Convention and Exhibition Center was studied. The geometrical parameters of different thickness were analyzed and the economic plate thickness of this project was determined range. The influence of slab thickness on the natural frequency and deflection of the structure is investigated. The analysis shows that the natural frequency of the structure increases significantly and the deflection decreases obviously when considering the combined effect of concrete slab. However, the natural frequency and deflection of the structure do not increase with the slab thickness While the linear improvement; when the plate thickness reaches a certain value, due to increased self-weight, causing lower natural frequency, deflection increases. The design of connecting nodes between the truss and the concrete slab is introduced, which provides reference for the design of similar structures.