论文部分内容阅读
为提高多层大跨钢框架结构的抗连续倒塌性能,将空腹桁架结构作为转换层的概念应用到结构抗连续倒塌设计中,提出间隔空腹桁架式框架结构,并对其抗倒塌性能进行分析。其中分别选取等节间间隔空腹桁架式框架结构和混合式间隔空腹桁架式框架结构,使用SAP 2000对其进行非线性静力分析和非线性动力分析,并将其结果与普通框架结构结果进行对比。结果分析表明,间隔空腹桁架式框架结构可以视为在纯框架中加入了刚性隔离带,使得结构的刚度增大,可更好地抵抗局部破坏引起的动力响应,提高了结构的鲁棒性,其中混合式间隔空腹桁架式框架结构的性能要优于等节间式结构。
In order to improve the anti-continuous collapse performance of multi-span long-span steel frame structure, the concept of fast web truss structure as transfer layer was applied to anti-continuous collapse design of structures. An intermittent truss frame structure was proposed and its anti-collapse performance was analyzed. In this paper, we choose the fast-spaced truss-type frame structure and the hybrid-type fast-spaced truss frame structure with constant spacing, respectively, and perform nonlinear static analysis and nonlinear dynamic analysis using SAP 2000, and compare the results with those of common frame structure . The results show that the intermittent truss frame structure can be considered as a rigid frame in the rigid isolation band, making the structure stiffness increases, can better resist the dynamic response caused by local damage and improve the structural robustness, Among them, the performance of the mixed-type fasting truss-type frame structure is superior to that of the internode structure.