孙树峰,吕涛,陈国明,孙久洋,宋玉东,何睿.导管架平台拆除过程稳定性及影响因素分析[J].海洋工程,2020,38(1):140~146
导管架平台拆除过程稳定性及影响因素分析
Analysis on stability and influencing factors in demolition process of jacket platform
  
DOI:10.16483/j.issn.1005-9865.2020.01.014
中文关键词:  导管架平台  拆除作业  动力响应  时程分析  作业参数
英文关键词:jacket platform  dismantling operation  dynamic response  time history analysis  operating parameters
基金项目:国家自然科学基金项目(51579246);山东省博士后基金(201703017)
作者单位E-mail
孙树峰 中国石油大学 海洋油气装备与安全技术研究中心山东 青岛 266580 1206677863@qq.com 
吕涛 中国石油大学 海洋油气装备与安全技术研究中心山东 青岛 266580
山东海洋工程装备研究院有限公司山东 青岛 266000 
 
陈国明 中国石油大学 海洋油气装备与安全技术研究中心山东 青岛 266580 offshore@126.com 
孙久洋 中国石油大学 海洋油气装备与安全技术研究中心山东 青岛 266580  
宋玉东 中国石油大学 海洋油气装备与安全技术研究中心山东 青岛 266580  
何睿 中国石油大学 海洋油气装备与安全技术研究中心山东 青岛 266580  
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中文摘要:
      现有服役海洋平台正逐步走向老龄化,海洋平台拆除成为海洋工程新的经济增长点。针对达到服役年限的导管架平台,基于数值分析方法模拟拆除过程,开展平台在不同拆除阶段和环境载荷等参数下的稳定性及影响规律研究。基于钢结构整体稳定性理论,以导管架平台拆除过程中顶点位移为参考,定义导管架平台拆除作业稳定性指标,提出拆除作业阶段划分方法,通过分析导管架平台在不同影响因素作用下拆除过程稳定性响应,给出拆除作业建议。选取我国南海某4裙12腿进行实例分析,结果表明:主桩腿对导管架平台起决定性承载作用,拆除部分主桩腿后需要引入外部支撑力,以保证拆除作业安全进行;拆除构件越多,来浪方向和环境载荷大小对平台影响越加显著。研究结果可为导管架平台拆除作业提供参考。
英文摘要:
      With the existing ocean platforms in service being gradually aging, the demolition of the ocean platforms has become a new economic growth point for ocean engineering. A numerical analysis method is used to simulate the demolition process of the jacket platform which has reached the service life, and the stability and influence rule of the platform in different demolition stages and under different environmental loads are studied. Based on the theory of integral stability of steel structure, taking the top displacement of jacket platform as the reference, the stability index of jacket platform is defined, and the method of the jacket platform removal operation phase division is proposed. By analyzing the removal operation stability response of the jacket platform under the influence of different factors, the suggestions for the removal operation are given. We choose the jacket platform with 4 skirts and 12 legs in the South China Sea to make case analysis. The results show that the main pile leg plays a decisive bearing role of the jacket platform, as external support force needs to be introduced to ensure the safety operation of the demolition after removing a small number of main pile legs. The more the components are dismantled, the more obvious effects the direction of incoming waves and the magnitude of environmental loads have on the incomplete platform. The research results provide a reference for the demolition of the jacket platform.
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