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水下夹桩器夹持性能分析及实验研究

DOI: doi:10.3969/j.issn.1007-7043.2011.09.023

Keywords: 水下夹桩器, 接触, 动力学分析, 弹塑性??

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Abstract:

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.

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