东海三种井口平台桩基受力特性分析

Pile Foundation Mechanical Characteristic Analysis for Three Types of Wellhead Platforms in East China Sea

4腿8裙桩井口平台按导管架腿斜度可分为单斜式、双斜式与斜变直式3种形式。桩基受力特性是平台的重要性能。以SACS程序为分析工具,基于非线性土壤/桩基/结构交互分析,研究了这3种形式平台的桩基受力特性。通过桩基受力影响因素分析,提出了改善桩基受力的措施,可为该类平台的导管架与桩基设计提供参考。

Wellhead platforms with 4legs and 8skirt piles can be classified as three forms including single-batter type,double-batter type and batter-to-vertical type according to the jacket leg batter.The pile foundation mechanical characteristic is an important performance of the platform.Pile foundation mechanical characteristics for the three types of platforms were studied,using SACS software,based on nonlinear soil-pile-structure interaction analysis.Influence factor analysis on pile foundation mechanical characteristics was performed,and measures for improving the pile foundation bearing capacities were discussed.The results can provide a reference for jacket and pile foundation design for these types of platforms.