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世茂深坑酒店坑下近70m高,主体结构依崖壁而建,立面形态复杂;在坑底及崖壁设置两个支承点,结构及构件的受力规律极为特殊。基于力学简化模型,阐述了上、下两点支承结构的整体受力规律。探索了主框架竖向构件在各荷载工况下内力权重;研究了主框架钢管混凝土柱与钢支撑重力荷载下的轴力分布规律,分析表明其内力分布与结构形态紧密相关;基于强迫位移概念论述了跨越桁架刚度控制的重要性及解决方案;采用ANSYS软件对若干关键节点进行了有限元分析;研究了不同施工顺序下主框架内力变化规律,论述了施工模拟分析的重要性。通过对钢结构主框架受力规律的研究,保证了结构设计安全性与经济性的和谐统一。
Shimao pit hotel near the pit height of 70m, the main structure built by the cliffs, facade complex shape; set at the pit bottom and cliff two bearing points, the structure and components of the force of the law is very special. Based on the simplified mechanics model, the general stress law of the upper and lower support structures is expounded. The internal force of the vertical members of the main frame under various load conditions is explored. The distribution of axial force under the load of CFST columns and steel supports is studied. The analysis shows that the internal force distribution is closely related to the structural form. Based on the concept of forced displacement The importance of the control over the truss stiffness and its solution are discussed. The finite element analysis of some key nodes is carried out by ANSYS software. The variation of the internal force of the main frame under different construction sequences is studied. The importance of the construction simulation is discussed. Through the study of the stress law of the main frame of the steel structure, the safety and economy of the structural design are guaranteed to be in harmony and unity.