水下夹桩器夹持性能分析及实验研究  

Analysis and experimental study on the grip function of an underwater skirt pile gripper

作　　者：姜沛然[1] 房晓明[2] 

机构地区：[1]哈尔滨工程大学机电工程学院,黑龙江哈尔滨150001 [2]海洋石油工程股份有限公司,天津300451

出　　处：《哈尔滨工程大学学报》2011年第9期1228-1232,共5页Journal of Harbin Engineering University

摘　　要：水下夹桩器是海洋石油平台导管架安装过程中的重要夹具.为了研究夹桩器的夹持性能,对夹桩器压块材料、压块齿形进行研究,设计并优化了压块的齿形参数,建立了压块齿部与导管桩间接触力学模型.对夹紧力与压块齿部嵌入深度关系的非线性问题,利用LS-DYNA进行了动力分析.依据薄壳弹塑性稳定性理论确定了导管桩不失稳的临界均布夹紧力,给出了夹紧力与夹桩器夹持性能的关系曲线.研制了夹桩器工程试验样机,进行了实际工况条件下的实验,实验结果显示夹桩器满足导管架夹持的性能要求,为解决超大重量物体的夹持问题提供了有效方法.The underwater skirt pile gripper plays an important part in the installation process of an offshore oil platform jacket.In order to study the clip function,material,and shape of the pressing block in underwater conditions,the skirt pile gripper was investigated.Parameters of the pressing block tooth were designed and optimized,and the contact mechanical model of the pressing block teeth and the steel pile was constructed.The nonlinear relationship between the pressing force and the depth of the pressing block tooth was analyzed by LS-DYNA explicit dynamic analysis.The critical uniform pressing force of the steel pile was ascertained according to the thin shell elastic-plastic stability theory,and the relationship between the pressing force and grip function of the skirt pile gripper was given.The experimental prototype of the skirt pile gripper was developed,experiments were carried out under the actual working conditions,and the effectiveness of the skirt pile gripper was validated by experimental results,providing an effective solution for the problem of large-weight object gripping.

关 键 词：水下夹桩器 接触 动力学分析 弹塑性 

分 类 号：TE5[石油与天然气工程—油气田开发工程]