Influence of Ground Motion Duration on Responses of Concrete Gravity Dams. Issue 7 (2nd July 2020)

• Record Type: Journal Article
• Authors: Wang, Chao; Hao, Hong; Zhang, Sherong; Wang, Gaohui
• Is Part Of: Journal of earthquake engineering. Volume 24:Issue 7(2020)
• Page Start: 1156
• Page End: 1180
• Publication Date: 2020-07-02
• Subjects: Concrete Gravity Dams -- Ground Motion Duration -- Seismic Damage Measures -- Seismic Performance Assessment -- Global Damage Index; Earthquake engineering -- Periodicals; 624.1762
• DOI: 10.1080/13632469.2018.1453422
• Languages: English
• ISSNs: 1363-2469

Abstract

ABSTRACT: This study investigates the duration effect on the responses and damage of a dam–reservoir–foundation system. A group of 95 recorded accelerograms with a wide range of durations are adopted in the analyses. A novel global damage index that takes into consideration the consequences of damage at different locations on the overall dam safety is proposed. Nonlinear analysis results show that the duration is positively correlated with the accumulated damage of the dam system. An amplification coefficient that relates the response of the concrete gravity dam from short-duration and long-duration ground motions is proposed.