Dynamic response of long-span bridges subjected to nonuniform excitation: a state-of-the-art review

¹ Ph.D. Student Department of Civil and Environmental Engineering, Gadjah Mada University, Yogyakarta, Indonesia
² Department of Civil Engineering, Universitas Muhammadiyah Yogyakarta, Yogyakarta, Indonesia
³ Department of Civil and Environmental Engineering, Gadjah Mada University, Yogyakarta, Indonesia

^* Corresponding author: seplika.yadi@ft.umy.ac.id

Abstract

In recent years, considerable attention has been paid to the research of dynamic response of long-span bridges with particular emphasis on seismic behavior. Cable-stayed and suspension bridges are the most popular types. Since long-span bridges have multi-supports and extreme lengths, due to the spatial variation effects, the ground motions at different supports might be non-uniform. A state-of-the-art update review of the response of long-span bridges subjected to non-uniform excitation is presented. The review mainly focuses on the theoretical aspects of non-uniform excitation, numerical studies, and experimental studies to verify some of the theoretical findings. In this paper, a review of the use of shake-table in experimental studies of long-span bridges is also presented. The non-uniform cases considered include a time delay with the same support excitations, multiple support excitations, and the combination of the first and the later. The results are discussed and summarized in comparison to the cases of uniform support excitation.