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JDR Vol.9 No.6 pp. 946-953
(2014)
doi: 10.20965/jdr.2014.p0946

Paper:

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Analysis of Topographic Effects in Dynamic Response of a Typical Rocky Populated Slope in Lima, Peru

Carlos Gonzales*, Shoichi Nakai*, Toru Sekiguchi*,
Diana Calderon**, Zenon Aguilar**, and Fernando Lazares**

*Department of Urban Environment Systems, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 268-8522, Japan

**Japan Peru Center for Earthquake Engineering and Disaster Mitigation (CISMID), Faculty of Civil Engineering, National University of Engineering, Lima, Peru

Received:
June 30, 2014
Accepted:
September 22, 2014
Published:
December 1, 2014
Creative Commons License
Keywords:
populated slope, microtremor arrays, finite element model, topographic effects
Abstract
A currently populated slope in the northeast part of the city of Lima was selected as the target area of this study, with the aim of analyzing the influence of topography on its seismic response. A finite element model was constructed using soil information obtained by microtremor arraymeasurements conducted in flat and sloping areas, and solved for plain strain conditions in the time domain using an input motion developed for the most critical slip model of a simulation for megathrust earthquakes. Results showed that for this typical rocky slope, topographic effects do not have a significant influence on its seismic response, except for areas close to the foot of the slope where, even if soil vibration is restricted, an amplification of the seismic motion is still expected for short period structures.
Cite this article as:
C. Gonzales, S. Nakai, T. Sekiguchi, D. Calderon, Z. Aguilar, and F. Lazares, “Analysis of Topographic Effects in Dynamic Response of a Typical Rocky Populated Slope in Lima, Peru,” J. Disaster Res., Vol.9 No.6, pp. 946-953, 2014.
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