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Structural Engineering and Mechanics Volume 73, Number 5, March10 2020 , pages 599-612 DOI: https://doi.org/10.12989/sem.2020.73.5.599 |
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Investigation on seismic behavior of combined retaining structure with different rock shapes |
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Yu-liang Lin, Lian-heng Zhao, T.Y. Yang, Guo-lin Yang and Xiao-bin Chen
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| Abstract | ||
| A combination of a gravity wall and an anchor beam is widely used to support the high soil deposit on rock mass. In this study, two groups of shaking table test were performed to investigate the responses of such combined retaining structure, where the rock masses were shaped with a flat surface and a curved surface, respectively. Meanwhile, the dynamic numerical analysis was carried out for a comparison or an extensive study. The results were studied and compared between the combined retaining structures with different shaped rock masses with regard to the acceleration response, the earth pressure response, and the axial anchor force. The acceleration response is not significantly influenced by the surface shape of rock mass. The earth pressure response on the combined retaining structure with a flat rock surface is more intensive than the one with a curved rock surface. The anchor force is significantly enlarged by seismic excitation with a main earthquake-induced increment at the first intensive pulse of Wenchuan motion. The value of anchor force in the combined retaining structure with a flat rock surface is generally larger than the one with a curved rock surface. Generally, the combined retaining structure with a curved rock surface presents a better seismic performance. | ||
| Key Words | ||
| gravity wall; anchor beam; shaped rock mass; shaking table test; numerical simulation | ||
| Address | ||
| Yu-liang Lin, Lian-heng Zhao, T.Y. Yang, Guo-lin Yang and Xiao-bin Chen Yu-liang Lin, Lian-heng Zhao, Guo-lin Yang and Xiao-bin Chen: School of Civil Engineering, Central South University, Changsha, 410075, China Yu-liang Lin, T.Y. Yang: Department of Civil Engineering, University of British Columbia, Vancouver, V6T 1Z4, Canada Yu-liang Lin: State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining & Technology, Xuzhou, 221008, China T.Y. Yang: International Joint Research Laboratory of Earthquake Engineering, Tongi University, Shanghai, 200092, China | ||