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结构效率系数基于结构效率影响因素提出,为结构分析提供一个定量的指标。综述了现有的适用于高层建筑结构的结构效率系数,包括:1基于轴向变形贡献率的结构效率;2结构整体弯曲剪切变形比s系数;3基于刚度折减的桁架效率系数E_f;4基于构件应力的材料效率指数MEI_c;5基于结构布置的结构效率系数。对比了各系数的适用范围、优化准则、优化层次、作用和优缺点,并对值得进一步研究的问题做出展望。结构效率系数可促进结构体系的改进和创新,又可用于工程设计,为结构优化设计提供有效的指导。
The coefficient of structural efficiency is based on the factors that affect structural efficiency, which provides a quantitative indicator of structural analysis. The existing structural efficiency coefficients for high-rise building structures are summarized, including: 1 the structural efficiency based on the contribution rate of axial deformation; 2 the overall bending shear deformation ratio s-coefficient; 3 the truss efficiency coefficient E_f based on stiffness reduction; 4 Based on component stress material efficiency index MEI_c; 5 Based on the structure of the structural efficiency factor. The applicable range, optimization criteria, optimization level, function, advantages and disadvantages of each coefficient are compared, and the problems worthy of further study are prospected. The structural efficiency coefficient can promote the improvement and innovation of the structural system, and can also be used in engineering design to provide effective guidance for structural optimization design.