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Title

Seismic Active Earth Pressure of Narrow Geosynthetic-Reinforced Backfill on Rigid Facing

Year: 1396
COI: JR_JEG-11-3_006
Language: EnglishView: 251
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Authors

Fariborz Dehghani - Civil Engineering Department, Faculty of Engineering, Kharazmi University, Tehran, Iran
Hadi Shahir - Civil Engineering Department, Faculty of Engineering, Kharazmi University, Tehran, Iran
Ali Ghanbari - Civil Engineering Department, Faculty of Engineering, Kharazmi University, Tehran, Iran

Abstract:

In the narrow geosynthetic-reinforced retaining walls a stable rear wall exists in a short distance and there is no enough space to extend appropriate length of reinforcements. In this case, the probability of overturning of retaining wall increases especially when subjected to earthquake loading. To increase the stability of the wall, reinforcements may be connected to the stable rear surface. Alternative solution is the utilization of full-height cast in-place concrete facing in order to resist the earth pressure by combined actions of reinforcements pullout capacity and facing flexural rigidity. One of the main questions about this type of walls is the portion of earth pressure resisted by the facing. In this study, the seismic earth pressure of narrow geosynthetic-reinforced backfill on rigid facing was evaluated using limit equilibrium approach and horizontal slices method. The critical failure surface was assumed to extend linearly from the wall toe to the rear surface and then moves along the interface of the backfill and rear surface up to the backfill surface. The effects of various parameters such as wall aspect ratio have been investigated. The obtained results show that the applied soil pressure on wall facing will be increased with depth in the upper part of the wall according to the Mononobe-Okabe equation, but its pattern is inversed in the lower part of the wall and it decreases until it reaches to zero at the wall toe. The results of analyses indicate that the attracted soil thrust by the facing increases with lessening of backfill width.

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This Paper COI Code is JR_JEG-11-3_006. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/791448/

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Dehghani, Fariborz and Shahir, Hadi and Ghanbari, Ali,1396,Seismic Active Earth Pressure of Narrow Geosynthetic-Reinforced Backfill on Rigid Facing,https://civilica.com/doc/791448

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Type of center: دانشگاه دولتی
Paper count: 11,657
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