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http://dx.doi.org/10.7843/kgs.2006.22.8.13

The Stability of Bridge Abutment Reinforced by Pile-slab on Soft Ground Undergoing Lateral Flow  

Hong, Won-Pyo (Dept. of Civil & Environmental Eng. Chung-Ang Univ.)
Song, Young-Suk (Korea Institute of Geoscience & Mineral Resources (KIGAM))
Publication Information
Journal of the Korean Geotechnical Society / v.22, no.8, 2006 , pp. 13-24 More about this Journal
Abstract
A site investigation has been performed for bridge abutments constructed on soft ground, which are deformed laterally by backfill. As the result from the evaluation of lateral movement in bridge abutment, the foundation piles were not considered as the passive pile at the design stage and the period for soft ground improvement was not proper. In order to prevent lateral movement of bridge abutment, the pile slab is proposed as a countermeasure. This method can effectively prevent the lateral flow of soft ground, since the overburden surcharge due to backfill on soft ground would be effectively delivered to bedrock through the piles in soft ground. The instrumentation system is designed and installed to investigate the behavior of bridge abutment on soft ground reinforced by pile slab. The instrumentation results show that pile slab effectively resists to the lateral movement of bridge abutment due to backfill. Also, the surcharge loads due to backfill are transmitted to the bedrock through piles. It confirms that the pile slab effectively resists to the lateral movement of bridge abutment due to backfill and the applied design method is reasonable.
Keywords
Bridge abutment; Field measurement; Lateral flow; Pile-slab method; Soft ground;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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