Effect of Slope Angle on Seismic Response of Unreinforced and Reinforced Soil Slopes in Shaking Table Tests

Srilatha, N and Latha, G Madhavi and Puttappa, CG (2017) Effect of Slope Angle on Seismic Response of Unreinforced and Reinforced Soil Slopes in Shaking Table Tests. In: Indian Geotechnical Journal, 47 (3). pp. 326-337. ISSN 0971-9555

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Abstract

This paper studies the effect of slope angle on the seismic response of unreinforced and reinforced soil slopes through a series of laboratory shaking table tests. Slopes were constructed using clayey sand and geogrids were used for reinforcing the slopes. The slope angle varies from 45°, 60° and 75° in different tests and the quantity and location of reinforcement is varied in different tests. Acceleration of base shaking varies from 0.1 to 0.3 g in the model tests and the frequency of base shaking was 2–10 Hz in different tests. The slope is instrumented with ultrasonic displacement sensors and accelerometers at different elevations. The response of different slopes is compared in terms of the horizontal displacements of the slope and acceleration amplifications measured at different elevations. At all frequency levels and base acceleration conditions, unreinforced slopes showed higher acceleration amplifications and increased displacements with the increase in steepness It was also observed from the test results that increase in steepness of the slope has detrimental effects on both acceleration amplifications and displacement response of unreinforced as well as reinforced model soil slopes.

Item Type:	Journal Article
Publication:	Indian Geotechnical Journal
Publisher:	Springer India
Additional Information:	The copyright for this article belongs to the Springer India.
Keywords:	Base acceleration; Frequency; Geogrid; Reinforcement; Seismic response; Shaking table tests; Soil slopes
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	29 May 2022 06:43
Last Modified:	29 May 2022 06:43
URI:	https://eprints.iisc.ac.in/id/eprint/72771

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