METHOD FOR REDUCING THE RISK OF WATER LEAKAGE FROM THE JOINTS OF WATER-SHIELDING BOX-SHAPED STEEL SHEET PILE

Abstract

 Vertical seawalls around the offshore waste landfill should be constructed as the revetment and impervious wall. Using box-shaped steel sheet pile is considered one of the most effective methods, because the sheet pile has double joints sealed by water-swelling sealant. Additionally filling the clayey geo-material into the chamber sandwiched between the joints works so well as backup measures, the impervious performance is improved further. Though water leakage from the joints before filling the material has bare possibility, imperviousness reliability should be improved furthermore. In order to hedge the risk of water leakage, prototype widened box-shaped steel sheet pile is developed to reduce the joints and post-construction repairing method is conducted experimentally. As results, these methods described earlier would be useful to reduce the risk of water leakage.