半潜式生产平台组块冗余强度分析的简化方法

Simplified Redundancy Analysis Method for Semi-submersible Platform Topside Decks

半潜式生产平台上部组块根据其与船体连接形式的特点可分为承载式和非承载式,对于承载式组块规范要求进行冗余强度评估,对于非承载式组块规范未做要求。本文以一座半潜平台的桁架式组块作为研究对象,研究了冗余度分析的环境条件选择、简化计算方法、关键杆件选取及对组块结构的影响等内容。

Topside deck of semi-submersible production platform can be divided into integrated deck and non-integrated deck according to the deck-to-hull connection features. According to design standards,the structural redundancy assessment is required for the integrated deck whereas isn’t specified for non-integrated deck. A topside deck structure composed of open space truss is studied in this paper. The research contents include selection of environmental conditions,simplified calculation method for redundancy analysis and its influence on the deck.