Keywords: Pipe sheet pile wall; Pile Foundation; Berthing structure; Dredging; Lateral load; Experiments.
Pile foundations are adopted if a soil of low bearing capacity extends to considerable depth or if the structure is heavy or settlement due to structure is large. It transfers the load to the strong stable stratum. The behaviour of soil in slope and piles passing in it is an elaborated soil-structure interaction problem. Though the behaviour of pile in horizontal ground under lateral loading is well known, its behaviour on sloping ground is not studied in detail. This thesis presents the results of experimental investigations carried out on single pile subjected to lateral load by varying relative density soil in horizontal and sloping ground with slopes 1V:3H, 1V:2.5H and 1V:2H. The lateral capacity of pile is considerably reduced when the lateral load is applied in the direction of slope. It is found that the lateral capacity of the pile is increased with increase in relative density of sand and lateral capacity of pile is greater in flatter slope than in steeper slope.
The berthing structures are built with diaphragm wall tied with piles. The location of diaphragm wall either in the front or in the rear of berthing structure depends on the soil condition, width of deck and slope formed after dredging. Instead of diaphragm wall, pipe sheet pile wall can be used for its high bending strength and easy construction if the soil is very soft clay or very loose sand. Two configurations with pipe sheet pile (PSP) wall in the front or in the rear connected to two rows of pile for lateral mooring pull are studied for different dredge levels. Experimental study performed in cohesionless soil for both the configurations shows that the configuration with pipe sheet pile wall in front has two times more capacity with pipe sheet pile wall in the rear. Three configurations with pipe sheet pile wall are studied for different dredge levels and lateral pull through numerical modelling.