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Geosciences 2018, 8(5), 170; https://doi.org/10.3390/geosciences8050170

Development of Three-Dimensional Soil-Amplification Analysis Method for Screening for Seismic Damage to Buried Water-Distribution Pipeline Networks

1
Earthquake Research Institute and Department of Civil Engineering, The University of Tokyo, Tokyo 113-0032, Japan
2
Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
3
International Research Institute of Disaster Science, Tohoku University, Sendai 980-0845, Japan
4
Fukken Gijyutsu Consultant Co., Ltd., Sendai 980-0012, Japan
*
Author to whom correspondence should be addressed.
Received: 31 December 2017 / Revised: 27 April 2018 / Accepted: 4 May 2018 / Published: 9 May 2018
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Abstract

A soil-amplification analysis method is developed that uses high-resolution ground data and a three-dimensional nonlinear dynamic finite-element method to screen for possible areas of seismic damage to buried water-distribution pipeline networks. The method is applied to a cut-and-fill developed area in Japan, whose water-distribution pipeline network was severely damaged in the 2011 off the Pacific Coast of Tohoku Earthquake. The obtained soil amplification is compared with known points of pipeline damage to check the validity of the analysis. A sensitivity test is also conducted to account for uncertainties in the properties of the ground material. From the results, it is expected that the developed soil-amplification method could be used to screen for possible damage to buried pipelines in a given area, and used to support methods for estimating damage to buried pipelines based on observations and seismic indices. View Full-Text
Keywords: soil-amplification analysis; water-distribution pipeline network; three-dimensional analysis; finite-element method soil-amplification analysis; water-distribution pipeline network; three-dimensional analysis; finite-element method
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Fujita, K.; Ichimura, T.; Kazama, M.; Ohno, S.; Sato, S. Development of Three-Dimensional Soil-Amplification Analysis Method for Screening for Seismic Damage to Buried Water-Distribution Pipeline Networks. Geosciences 2018, 8, 170.

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