某超高层框筒结构弹塑性时程对比分析

Comparative Analysis of Elasto-Plastic Time History of a Ultra-High-Rise Frame Tube Structure

围绕钢筋混凝土结构在地震作用下的抗震性能分析,比较了SAUSG和YJK-EP两款有限元分析软件在建模、分析和计算结果方面的异同。为保证分析的一致性,设定两款软件的主要参数相同,并采用相同的地震波输入。通过对比分析,发现这两款软件在计算结构自振特性、顶部位移、层间位移角、层剪力、基底剪力以及损伤状态等方面的结果具有较高的一致性,证明了两款软件在分析和评估钢筋混凝土结构抗震性能方面的有效性。由于在分析时为两款软件选定了不同的计算方式和阻尼模型,导致部分计算结果在特定情况下存在一定的差异,因此,在使用这两款软件进行抗震性能分析时,应充分考虑地震波的频率特性、振幅以及与结构的相互作用等因素,以获得更为精确和可靠的结果。指出了结构在特定楼层可能存在刚度不均匀的问题,为进一步优化结构设计和改善结构性能提供了参考。

The seismic performance analysis of reinforced concrete structures under earthquake action is compared between SAUSG and YJK-EP finite element analysis software in terms of modeling,analysis,and calculation results.To ensure consistency in analysis,the main parameters of the two software are set to be the same,and the same seismic wave input is used for different software.Through comparative analysis,it is found that two software have high consistency in calculating structural natural vibration characteristics,top displacement,inter story displacement angle,story shear force,base shear force,and damage status,proving the effectiveness of the two software in analyzing and evaluating the seismic performance of reinforced concrete structures.Due to the selection of different calculation methods and damping models for two software during analysis,some calculation results may differ in specific conditions.Therefore,when using these two software for seismic performance analysis,factors such as the frequency characteristics,amplitude,and interaction with the structural of seismic waves should be fully considered to obtain more accurate and reliable results.The problem of uneven stiffness in structures on specific floors has been pointed out,providing a reference for further optimization of structural design and improvement of structural performance.