A Comparative Study between Welding and High-Tensile Vertical Bolt Methods in PHC Pile Coupling Work

Abstract

Few studies have been conducted on the constructability or economic feasibility of the coupling of Pre-tensioned Spun High Strength Concrete (hereinafter PHC pile). For this reason, before applying it to actual construction sites, an analysis of constructability and economic feasibility is necessary. Therefore, this study aims to compare the welding method with the high-tension vertical bolt method. It is found that the use of the high-tension vertical bolt method can reduce expenses by 25 percent on average compared with the welding method.