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Commonly concrete blocks are installed on pipe bends subjected to thrust force. However damages, separation of joints, have been occurred due to its weight during large earthquake. In previous study, the lightweight thrust restraint with geogrid and anchor plate was proposed and the effect was proved by model tests. In this study, the large-scale tests for new method were carried out in the large pit (8.4m×5.4m×4m), using the pipe bend having a diameter ∅300. As the results, the resistance force using this new method increased 60% comparing with non-reinforced case. In addition it was clarified that the degree of this effect was depended on the stiffness and length of geogrid.
- 国際ジオシンセティックス学会 日本支部の論文
国際ジオシンセティックス学会 日本支部 | 論文
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