约束条件对导管架平台结构极限承载力的影响分析  

Analysis to the Impact of Restraint Models of Foundation on Ultimate Load-bearing Capacity of Jacket Platform Structure

作　　者：陈祥余 周道成[2] 张传杰 王巍巍 

机构地区：[1]中国海洋石油工程股份有限公司,天津300451 [2]大连理工大学,大连116024

出　　处：《中国海洋平台》2013年第4期28-32,共5页China offshore Platform

基　　金：国家高技术研究发展计划资助(2008AA092701-6)

摘　　要：平台结构基底极限承载能力是平台结构重要的整体力学性能指标,是平台结构安全评定的重要参数,结构有限元建模的不同简化约束条件对导管架平台结构的极限承载能力具有重要影响。在考虑材料非线性的基础上,采用静力非线性分析方法对导管架平台结构倒塌全过程进行计算,建立不同约束条件导管架平台结构的极限承载能力计算方法。将该方法应用于实际平台结构,计算分析了基础不同简化约束模式条件对海洋平台结构极限承载力的影响规律。分析结果将为导管架平台结构极限承载力计算如何简化基础约束模式提供一个参考。The ultimate base shear of offshore jacket platform is an important mechanics index and parameter for safety evaluation of the platform. The different simplified restraint models of foundation in element model of structure have importantly affected the ultimate load -bearing capacity of the jacket platforms. The calculated method for the ultimate load-bearing capacity is established by the non-linear static analysis method, which can consider non-linear- ity of materials and calculate the whole collapsing procedure of offshore jacket platform. The ultimate load-bearing capacity of the real jacket platform is calculated by the method. Based on the calculated results, the impact of different simplified models of foundation on the ultimate load-bearing capacity of offshore jacket platforms is obtained. This works will provide a refer- ence when the foundation is simplified to calculate the ultimate load-bearing capacity of off- shore jacket platforms.

关 键 词：导管架平台 基础 简化约束模式 极限承载能力 

分 类 号：P75[天文地球—海洋科学]