Stabilization of GRS integral bridge by means of pile foundations
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- HIRAKAWA Daiki
- 防衛大学校 システム工学群 建設環境工学科
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- TATSUOKA Fumio
- 東京理科大学 理工学部 土木工学科
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- AIZAWA Hiroyuki
- 独立行政法人 鉄道建設・運輸施設整備支援機構
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- NISHIKIORI Hiroki
- 東京理科大学 大学院 理工学研究科 土木工学専攻
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- SOHMA Ryoichi
- 東京理科大学 大学院 理工学研究科 土木工学専攻
Bibliographic Information
- Other Title
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- 杭基礎によるＧＲＳ一体橋梁の高安定化
- クイ キソ ニ ヨル GRS イッタイ キョウリョウ ノ コウアンテイカ
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Abstract
The effects of pile foundation on the stability of GRS integral bridge were investigated by performing the followings two model loading tests; a) lateral loading model wall tests that was simulated to the thermal lateral cyclic displacements at the top of the facing caused by seasonal thermal expansion and contraction of the bridge girder, and b) 1g shaking table tests. From the results of the lateral loading wall tests, the residual settlement of backfill due to the thermal cyclic displacement of the girder were fully alleviated by not only reinforcing the backfill but also fixing the lateral displacement of bottom of the facing by using of pile foundations. On the other hand, it was confirmed that the seismic stability of GRS integral bridge without pile foundation is sufficiently high. The seismic stability of GRS integral bridge does not increase when pile group with short piles were applied. It is necessary to apply group pile with short piles to ensure sufficiently high stability of GRS integral bridge.
Journal
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- Geosynthetics Engineering Journal
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Geosynthetics Engineering Journal 23 169-176, 2008
Japan Chapter of International Geosynthetics Society