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结合白云绿地金融中心实际工程,介绍了转换桁架的设计过程。着重介绍转换桁架的设计选型对比,以及模型计算中弹性楼板、施工顺序定义等参数设置。转换桁架采用型钢混凝土杆件,充分利用型钢的抗拉强度和混凝土的抗压强度;针对偏拉型钢混凝土构件承载力提出了近似的计算方法。从概念角度出发,在构造上加强相关节点的设计,使结构更加安全可靠。
Combined with the actual project of Baiyun Greenland Financial Center, the design process of conversion truss is introduced. Emphasis is given to the comparison and design of the conversion truss design, as well as the parameter settings of the elastic floor and the construction sequence in the model calculation. The conversion truss adopts steel reinforced concrete members to make full use of the tensile strength of steel and the compressive strength of concrete. An approximate calculation method is proposed for the bearing capacity of steel members. From a conceptual point of view, the design of related nodes is strengthened to make the structure safer and more reliable.