| 桩腿对接缓冲器内水平缓冲件的有限元分析 |
| Finite Element Analysis of Horizontal Buffer Elements in Pile Leg Butt Joint Buffer |
| 投稿时间：2023-06-01 修订日期：2023-06-01 |
| DOI：10.12136/j.issn.1000-890X.2023.12.0967 |
| 中文关键词: 桩腿对接缓冲器 水平缓冲件 刚度 有限元分析 |
| 英文关键词: pile leg butt joint buffer horizontal buffer element stiffness finite element analysis |
| 基金项目:国家发展和改革委员会科技攻关项目（CCL2020HNFN0183） |
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| 中文摘要: |
| 对桩腿对接缓冲器（LMU）内水平缓冲件（HE）进行了有限元分析。结果表明：对于钢筒及其内部沿圆周方向均匀分布的12个HE组成的LMU产品（简称产品），HE材料的泊松比越大，HE的刚度越大，但是变化幅度较小；HE与钢筒内壁的摩擦因数对HE的刚度有一定的影响，在HE装配完成后，须在其表面涂抹润滑脂以减小其与桩腿的摩擦因数；在HE中嵌入钢板并改变钢板的尺寸和位置、改变HE材料特质可以增大产品的刚度；采用12个HE沿钢筒圆周方向均匀分布的设计可满足产品的工程刚度要求，在两种极端工况下产品的刚度偏差在1.98%之内。本研究可以提高LMU的减震效果，有利于导管架桩腿结构在安装过程中不受破坏。 |
| 英文摘要: |
| Finite element analysis was performed on the horizontal buffer element（HE） in the pile leg
butt joint buffer（LMU）.The results showed that for LMU products（referred to as the product） composed of
the steel cylinder and its interior 12 HE evenly distributed along the circumference of the steel cylinder，the
higher the Poisson’s ratio of HE material was，the greater the stiffness of HE was，but the stiffness variation
was small.The friction coefficient between HE and the inner wall of the steel cylinder had a certain impact
on the stiffness of HE.After HE assembly was completed，lubricating grease should be applied on its surface
to reduce the friction coefficient with the pile leg.Embedding steel plates in HE and changing the size and
position of the steel plates，as well as changing HE material characteristics，could increase the stiffness of the
product.The design with 12 HE evenly distributed along the circumference of the steel cylinder could meet
the engineering stiffness requirements of the product，and the stiffness deviation of the product was within
1.98% under two extreme working conditions.This study could improve the shock absorption effect of LMU，
which was beneficial for preventing damage to the pile leg structure of the jacket during installation. |
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