Seismic Reliability Analysis of Hybrid Damping Structure Based on Pseudo Excitation Method
LIU Xiaohuan
WANG Yili
DING Jinghua
LIU Hui
Abstract：The stationary random seismic response and dynamic reliability of the hybrid damping structure under rare earthquakes were analyzed by the pseudo excitation method and reliability theory.A 10-story frame-shear wall structure was taken as a numerical example,whose isolation layer consisted of rubber bearings and viscous dampers.The Clough-Penzien double-filtered power spectrum model was used to analyze the random dynamic response under rare earthquakes of eight and nine degrees by the pseudo excitation method.According to the reliability theory,the equivalent normalization method was used to calculate the reliability index of each story to obtain the reliability of the structure.Finally,according to the design principle of"two stages and three levels"in Chinese earthquake-resistant code,the dynamic reliability of the structure in the design reference period(50 years)was analyzed.The results show that the deformation of the isolation layer is large under rare earthquakes,and hybrid damping can effectively reduce the displacement response of the isolation layer and improve the overall reliability of the structure under random earthquakes.During the design reference period,the failure of the isolation layer is a prominent problem,and effective limit protection measures should be taken in engineering design.
Keywords：Hybrid dampingPseudo excitation method(PEM)Random seismic responseDynamic reliabilityDesign reference period
Publication Date：2024-09-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 119-126 )