Comparison between seismic response analysis and monitoring data on steel cable-stayed bridge

Abstract

A 3D model for dynamic response analysis is composed based on ambient vibration monitoring data. Natural excitation technique and Eigenrealization algorithm (ERA) are applied to obtain modal parameters. A analytical modal parameters of the model are consistent with the real modal parameters calculated by ERA. Dynamic response analysis are performed for several small earthquake waves and their analytical results are agreed with response of actual monitored data. Dynamic response analysis are also performed for severe earthquake waves.