巨型框架结构等效模型简化理论研究

Theory study on equivalent simplified model of mega frame structure

巨型框架结构是未来超高层建筑结构体系发展和应用的主要方向之一,为了克服目前巨型框架结构分析过程中节点和单元数过于庞大、构造复杂、耗时较长等不利因素,通过将巨型梁、柱、支撑简化为具有等效轴向刚度、等效弯曲刚度及等效剪切刚度的等效实腹梁、柱和支撑的方法,简化建模难度,节约机时,实现变参数分析的目的.文中推导了等效简化的过程和方法,并以某一超高层杆件体系为例进行验算,结果表明等效简化效果明显.

Mega frame structure is one of main directions of development and application about high-rising build- ing structural in future. In mega frame structure analysis process, in order to overcome the problem caused gen- erally by huge data of nodes and elements, structure＇s complexity and other handicaps, the paper simplifies the mega beams, mega columns and mega braces to the solid web beams, columns and braces with equivalent axial stiffness, equivalent bending stiffness and equivalent shear stiffness respectively. It presents the process and method of equivalent simplification. Furthermore, it verifies the theory with one representative example.