.... The results also show that one-way tension cycling of piles within the stable zone of the cyclic interaction diagram did not lead to a significant reduction in the growth of shaft friction with time, as observed in first-time tests. 1 Introduction Despite widespread empirical evidence of gains in static...

... few years, significant advances in the design and understanding of suction caissons have been developed. However, much less has been done on reducing the installation risk. This paper outlines an investigation into the use of two-way pressure cycling during installation as a means of diminishing...

... resistance, submerged weight of caisson and its geometry. Installation pressure can be reduced when adopting two-way pressure cycling. This process involves cycling the pump flow rate to cause small upward and downward movements of the caisson which soften the clay strength along the shaft hence reducing...

... were submitted to significant numbers of load cycles (typically 100 to 1,000) with frequencies generally around 0.1 Hz. Different degrees of one- way and two-way cycling were imposed. Static load tests were performed and, in some cases, changes in axial capacity due to set up, cyclic degradation, rate...

...1. Introduction The pile foundations of offshore platforms, as well as wind and water turbines, experience environmental cyclic loading. These cycles can affect the stress con- ditions in the soil mass close to the pile and, conse- quently, the pile stiffness and capacity. Significant degradation...