Shaking table study on the influence of ground motion frequency on the performance of MSE walls. Issue 142 (March 2021)

• Record Type: Journal Article
• Authors: Xu, Peng; Hatami, Kianoosh; Jiang, Guanlu
• Is Part Of: Soil dynamics and earthquake engineering. Issue 142(2021)
• Publication Date: 2021-03
• Subjects: Geosynthetics -- Reinforced soil retaining walls -- Frequency -- Dynamic response -- Critical acceleration -- Acceleration amplification factor -- Connection loads; Soil dynamics -- Periodicals; Earthquake engineering -- Periodicals; Sols -- Dynamique -- Périodiques; Génie parasismique -- Périodiques; 624.176205
• DOI: 10.1016/j.soildyn.2021.106585
• Languages: English
• ISSNs: 0267-7261

Abstract

Abstract: Three shaking table tests were carried out to investigate the influence of loading frequency on seismic performance of MSE walls constructed with full-height panel facing. Results of this study provide quantitative results on how base excitation frequency in combination with base acceleration amplitude could influence the dynamic response of these MSE walls relative to their deformations, earth pressures, acceleration amplifications and connection loads. Results indicate that model walls responded primarily in tilting mode. However, base sliding could also occur as an additional deformation mode at larger base excitation amplitudes, and at frequencies that are closer to the fundamental frequency of the wall, resulting in significant connection loads and other response characteristics. Findings of the study are compared with results from other studies and recommendations in design guidelines, as applicable. Highlights: Influence of loading frequency on seismic performance of MSE walls with different facing types was investigated. Results were discussed relative to deformations, earth pressures, acceleration amplifications and connection loads. Model walls responded mainly in tilting mode. However, base sliding could also occur causing significant response. Findings were compared with results from other studies and related recommendations in design guidelines.