【摘要】 采用有限元软件SAP2000,通过push-over方法,分析了转换梁、柱线刚度比的不同,对梁、柱塑性铰出现位置、顺序以及结构的侧向位移等产生的影响,讨论了转换梁、柱线刚度比对结构破坏机制的影响。基于上述分析,提出了转换梁、柱线刚度比宜在2.5~4.0之间的结论,可供设计底部抽柱带转换层的异形柱结构参考,并为进一步完善国家行业标准《混凝土异形柱结构技术规程》提供参考。更多还原

【Abstract】 Appropriate stiffness ratio of transfer girder to bottom column in special-shaped columns structures with reduced columns at the bottom are studied in this paper.Using the finite element software SAP2000 as well as the method of "push-over",the influences of stiffness ratio of transfer girder to bottom column on the position and order of plastic hinge as well as lateral displacement are analyzed.Structural damaging mechanism decided by stiffness ratio of transfer girder to bottom column is discussed.The appropriate value of stiffness ratio of transfer girder to bottom column is 2.5 to 4.0 based on the above analysis.The result has important meaning in practical design of concrete special-shaped column structures with transfer story,and can provide a reference to further compile the national standard:"technical regulations on concrete special-shaped column structures".更多还原