SEISMIC ACTIVE EARTH PRESSURE OF NARROW GEOSYNTHETIC-REINFORCED BACKFILL ON RIGID FACING

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DEHGHANI FARIBORZ; Shahir Hadi; GHANBARI ALI

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Journal: JOURNAL OF ENGINEERING GEOLOGY Year:2017 | Volume:11 | Issue:3 Page(s): 53-80

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Information Journal Paper

Title

SEISMIC ACTIVE EARTH PRESSURE OF NARROW GEOSYNTHETIC-REINFORCED BACKFILL ON RIGID FACING

Author(s)

DEHGHANI FARIBORZ | Shahir Hadi | GHANBARI ALI | Issue Writer Certificate

Keywords

GEOSYNTHETIC-REINFORCED SOIL WALLQ1

NARROW BACKFILLQ1

FULL-HEIGHT RIGID FACINGQ1

SEISMIC EARTH PRESSUREQ1

HORIZONTAL SLICES METHODQ2

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 geosyntheticreinforced 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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APA: Copy

DEHGHANI, FARIBORZ, Shahir, Hadi, & GHANBARI, ALI. (2017). SEISMIC ACTIVE EARTH PRESSURE OF NARROW GEOSYNTHETIC-REINFORCED BACKFILL ON RIGID FACING. JOURNAL OF ENGINEERING GEOLOGY, 11(3 ), 53-80. SID. https://sid.ir/paper/186301/en

Vancouver: Copy

DEHGHANI FARIBORZ, Shahir Hadi, GHANBARI ALI. SEISMIC ACTIVE EARTH PRESSURE OF NARROW GEOSYNTHETIC-REINFORCED BACKFILL ON RIGID FACING. JOURNAL OF ENGINEERING GEOLOGY[Internet]. 2017;11(3 ):53-80. Available from: https://sid.ir/paper/186301/en

IEEE: Copy

FARIBORZ DEHGHANI, Hadi Shahir, and ALI GHANBARI, “SEISMIC ACTIVE EARTH PRESSURE OF NARROW GEOSYNTHETIC-REINFORCED BACKFILL ON RIGID FACING,” JOURNAL OF ENGINEERING GEOLOGY, vol. 11, no. 3 , pp. 53–80, 2017, [Online]. Available: https://sid.ir/paper/186301/en

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