Improvement of Plastic Board Drain Method Applied at the Pusan New Port Project Site in Korea

摘要

This paper presents the improvement of Plastic Board Drain method on deltaic marine clay at Pusan's New Port Project site in Korea. A total of 32,088,326m Plastic Board Drain (PBD) with lengths of 40～50m was constructed for improvement of soft marine clay. Clarifying the ground improvement effect, several types of field monitoring instruments and site investigation including CPT test for deep depth penetration were performed. Around 3.5～5.0m consolidation settlement occurred and it is estimated that thick soft clay was successfully improved based on monitoring and investigation results.