ABSTRACT
The authors have developed a new H-joint Steel Pipe Sheet Piles (SPSPs) technology from a simple idea in which two steel pipes are connected by welding H-steel section on them as shown in Fig. 1 in order to improve the performance and widen application areas of SPSP technology. The H-joint SPSP is expected to remediate problems of traditional joints in SPSPs. The main characteristics of H-joint SPSP are: (1) H-joint is completely waterproof, (2) H-joint SPSP is environmentally friendly since the number of grouted joints is reduced by about 50%, (3) Short construction periods and reduction in operation costs are achieved because two steel pipe piles can be driven at the same time, (4) H-joint SPSP have high bending rigidity because H-steel section is welded rigidly and continuously against two steel pipes.
1.2 Design analysis method of SPSP foundation
