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Journal Article

Citation

敏和, 昌克, 隆雄, 進, 寅士良, 宏文. J. Jpn. Soc. Civil Eng. Ser. F6 Saf. Probl. 2017; 73(2): I_181-I_187.

Vernacular Title

石積擁壁の耐震挙動に関する模型実験及び不連続変形法を用いた挙動解析

Copyright

(Copyright © 2017, Japan Society of Civil Engineers)

DOI

10.2208/jscejsp.73.I_181

PMID

unavailable

Abstract

A series of shaking test with 1/7 scaled model was conducted by corporation of JR Co. Ltd.. DDA (Discontinuous deformation Analysis) simulations were carried out in two patterns, in which one was countermeasure with piles of stone wall, gravel and backfill soil, and the other is no-countermeasure wall.

The residual patterns of displacement in the DDA simulations are in good agreement with the results of shaking tests. Additionally, the DDA simulation approximately predicts the starting point and the beginning time of collapse inside the retaining wall. We could confirm that the DDA was a powerful tool and is complementally applicable to consider seismic design of masonry retaining walls.



Language: ja

Vernacular Abstract

日本には,膨大な数の石積擁壁が存在し,過去の地震において沈下,滑動,はらみ出しなどの被害が生じている.鉄道や宅地などに存在する石積擁壁は,専門職の技能と経験によって伝統的に構築されたものであり,今日も供用されている.しかしながら,その耐震性能については未解明な部分が多いのが現状である.各機関では石積擁壁の安定性を向上させるために種々の対策を講じており,その一例として,地山補強材を用いて補強を行う場合がある.本研究では,地山補強材を用いた場合の模型振動台実験を対象に,不連続変形法による挙動解析を行い,破壊メカニズム,及び補強効果を解析的に再現し,解析手法の有用性を確認した.

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