초록

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Abstract ▼ AI-Helper

In case of using pile foundation to support bridge abutments on soft ground, the soft ground often causes serious troubles such as lateral movement of the bridge abutments. The foundation piles in soil undergoing lateral movement is one of the typical passive piles. However, Generally, on design of ...

In case of using pile foundation to support bridge abutments on soft ground, the soft ground often causes serious troubles such as lateral movement of the bridge abutments. The foundation piles in soil undergoing lateral movement is one of the typical passive piles. However, Generally, on design of the piles for abutments, the piles have not been considered as a passive piles; sofar:. Because it is difficult to assess the effect of the lateral movement on the desigin and reasonable design method is not established yet. In this study, several abutments, of which lateral movement was taken place, was investigated. Based on the investigation a criterion was presented to assess the lateral movement of the soft soil under backfill for abutment. By use of the criterion, the lateral movement of abutment could be predicted. As the results of thin study, it was anon that the lateral movement of abutment could be occured when the safety factor of slope stability is lese than either 1.5(without the pile effect) or 1.8 (with the pile effect). Especially, excessive lateral movements were occurred when the safety factor of slope stability is less than either 1.0(without the pile effect) or 1.1 (with the pile effect).