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- 저자 : Kemal Hacıefendioğlu (검색결과 1 건)
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Multi-point response spectrum analysis of a historical bridge to blast ground motion
Kemal Hacıefendioğlu,Swagata Banerjee,Kurtuluş Soyluk,Olgun Köksal 국제구조공학회 2015 Structural Engineering and Mechanics, An Int'l Jou Vol.53 No.5
In this study, the effects of ground shocks due to explosive loads on the dynamic response of historical masonry bridges are investigated by using the multi-point shock response spectrum method. With this purpose, different charge weights and distances from the charge center are considered for the analyses of a masonry bridge and depending on these parameters frequency-varying shock spectra are determined and applied to each support of the two-span masonry bridge. The net blast induced ground motion consists of air-induced and direct-induced ground motions. Acceleration time histories of blast induced ground motions are obtained depending on a deterministic shape function and a stationary process. Shock response spectrums determined from the ground shock time histories are simulated using BlastGM software. The results obtained from uniform and multi-point response spectrum analyses cases show that significant differences take place between the uniform and multi-point blast-induced ground motions.
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