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Shock and Vibration
Volume 2016 (2016), Article ID 3569674, 13 pages
http://dx.doi.org/10.1155/2016/3569674
Research Article

Applicability of a Simplified SDOF Method in Longitudinal Deck-Pier Poundings of Simply Supported Girder Bridges

Tianbo Peng1,2 and Ning Guo1,2

1State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
2College of Civil Engineering, Tongji University, Shanghai 200092, China

Received 2 January 2016; Accepted 20 March 2016

Academic Editor: Stefano Sorace

Copyright © 2016 Tianbo Peng and Ning Guo. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The pounding issue between decks in the earthquake has been a great concern of many researchers, but the research on the deck-pier pounding issue was inadequate. In this paper, a simplified SDOF method was proposed to study the issue for simply supported girder bridges. Theoretical analysis, shaking table test, and finite element analysis were conducted to study the applicability of the simplified SDOF method in longitudinal deck-pier poundings. A whole structural model and a SDOF model for the longitudinal pounding issue were also established to study influences of the pier stiffness and the pier mass on longitudinal pounding responses. It is shown that the simplified SDOF method can estimate the pounding force and deck displacement fairly accurately for almost all cases. The pier mass has little effect on pounding responses except for bridges with very rigid piers, but the pier stiffness has a great influence. The larger the pier stiffness is, the higher the peak pounding force is.