Construction of Vertical Cutoff Barrier Using H-Jointed Steel Pipe Sheet Piles with H-H Joints
Shinya INAZUMI, Makoto KIMURA, Kazuhiro YAMAMURA, Yoshikazu NISHIYAMA and Masashi KAMON
Abstract:This paper shows application potential of H-jointed steel pipe sheet piles (SPSPs) and H-H joints on vertical cuttoff barriers used in coastal landfills. The authors have developed a number of technologies such as developing the H-jointed SPSPs and H-H joints for SPSP joint sections aimed at improving performance and widening application areas of SPSPs. Hydraulic conductivity of the H-jointed SPSPs with H-H joints was evaluated by experimental studies. In addition, a new construction technique is proposed for vertical cuttoff barriers in which H-jointed SPSPs with H-H joint is applied. The technique uses soil-cement columns to make pile driving easy and simultaneously improves the soil around and underneath the foundation of the structure. Key Words:Key words: Coastal landfill, H-H joint, H-jointed SPSP, Hydraulic conductivity, Soil-cement column, Vertical cutoff barrier