Method for constructing and installing an offshore gravity plaftorm structure and platform structure designed for the implementation of this method

摘要

A method of constructing and installing an offshore reinforced concrete gravity platform structure 1 consisting of a caisson 6 integral with at least one column 5, in which the structure 1 is a) constructed on dry land on a substantially horizontal surface parallel to the axis of the column b) placed afloat in shallow water, maintaining the column axis horizontal c) uprighted in deep water d) towed to the site of installation and e) ballasted down to rest on the sea bed.