井架模型极限承载性能分析  

Ultimate bearing capacity analysis of derrick model

作　　者：周国强[1] 韩东颖[2] 

机构地区：[1]大庆石油学院应用技术学院,河北秦皇岛066004 [2]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《大庆石油学院学报》2005年第3期50-52,124,共4页Journal of Daqing Petroleum Institute

基　　金：中国石油天然气集团公司科学研究与技术开发项目(03B209000)

摘　　要：为预报井架的极限承载力,提高现场井架作业的安全性,应用考虑双重非线性理论的有限元法,分析了实验室无损伤缺陷井架模型的极限承载力,通过参考应力修正法得到了含损伤缺陷井架的数值模型,进而预测了井架模型的极限承载力.预测结果和压溃试验结果相吻合,误差约为5.0%.In order to forecast the ultimate bearing capacity of derrick reasonably and ensure safety in well site operation, the FEM involving double nonlinearity theory is applied in this paper. The ultimate bearing capacity of the perfect Lab derrick model was analyzed, and the mathematical model of this structure with defects and defacements was derived by using the referential stress revisal method, then the ultimate bearing capacity of this derrick model was forecast. The forecasting result is close to the ruin testing value. The relative error is only about 5.0%.

关 键 词：井架模型 双重非线性 损伤缺陷 参考应力法 极限承载力 

分 类 号：TE923[石油与天然气工程—石油机械设备]