Analysis of theDynamic Characteristics of High-rise Buildings Under Long-period Earthquake Loads
Research indicates that long-period earthquake loads are typically associated with the low-frequency components of seismic waves,which may induce resonance phenomena in building structures,leading to significant vibration responses.To investigate the influence patterns of long-period earthquake loads on the dynamic characteristics of high-rise buildings,this study firstly selects several measured seismic records with different spectral characteristics from the PEER strong motion database.A specific high-rise building project is chosen as the research subject.By comparing model displacements,inter-story drifts,and internal force responses,the impact of long-period earthquake loads on the dynamic responses of high-rise buildings is explored.The research findings demonstrate that,compared to conventional seismic loads,long-period earthquake loads exhibit wider response spectrum sensitive zones,thereby causing larger seismic responses in structures.Taking meas-ured seismic waves selected from three seismic events as examples,under the action of long-period earthquake loads,the inter-story drifts and bottom section bending moment peaks of structures increase on average by approximately 2.5 times and 2.3 times,respectively.
国家科技期刊平台
NSTL
万方数据
