Safety Evaluation for Bridge Subjected to Near-fault Three-Dimensional Ground Motions
Near-fault strong ground motions, which are characterized by large vertical acceleration and complicated frequency-spectrum, have resulted in the significant damage of structures. Through studying on the peak value ratio and the response spectra ratio of near-fault ground motions, the value of existing seismic design code in near-fault zone is unreasonable. At the same time, the influence of earthquake magnitude and pulse effect on peak value ratio and response spectra ratio has been analyzed. And then, nonlinear dynamic time-history analysis method has been used to calculate the seismic response of the finite element model for simple- supported bridge excited by near-fault ground motions with large vertical component. The calculation results noted that the seismic response of bridge subjected to near-fault ground motions with large vertical component and pulse effect must be given much more our attention.
Near-fault ground motion Peak value ratio Spectra ratio Bridge Seismic response
Xinle Li Huijuan Dou Xi Zhu
College of Architecture and Civil Engineering, Dalian Nationalities University, Dalian 116600, China College of Architecture and Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
国际会议
南京
英文
565-569
2007-10-16（万方平台首次上网日期，不代表论文的发表时间）