چکیده
Abstract
The largest offshore soil penetration test ever undertaken was planned and carried out in 1985 in the Gullfaks Field, North Sea. In more than 200 m water depth a large scale test structure was successfully penetrated 22 m into the seabed to give important information for the design of the Gullfaks C fixed concrete platform to be installed in 1989. The test structure was made up of two steel cylinders, height 23 m and diameter 6.5 m, attached to each other through a concrete panel with crossectional area 2.4 m x 0.4 m. Penetration of the concrete panel into the clay, clayey sand and medium dense sand layers was achieved by the submerged weight and suction inside the two steel cylinders. 13 types of instruments, and a total of 70 sensors recorded continuously during penetration and gave specific geotechnical information like soil friction, earth pressure and pore pressure at 6 elevations and tip resistance of the concrete panel. Two tests were carried out and included variati
(No Ratings Yet)