摘要
为了探讨了入水砰击面压力空间分布规律,本文基于冲量入水砰击理论,建立了包含结构-水-空气三者耦合的数值计算模型,开展了半潜式平台立柱入水砰击载荷与入水角度和速度之间关系的研究。研究结果表明:砰击压力的大小与分布与入水角度和结构物入水面的空间位置密切相关,入水速度对其也存在有一定影响。数值计算的结果可以实现立柱砰击载荷的快速预报,对实际工程中平台立柱体结构的安全性评估具有指导意义。
To address the boom slamming problem of offshore platforms,based on the impulse theory of water entry slamming,in this paper,we propose a numerical simulation model comprising three couplings of the structure,water,and air for studying the relationship between slamming load and water entry angle and velocity on the semi-submersible platform column.We also discuss the spatial distribution of the slamming pressure on the water entry surface.Our results show that the slamming pressure is closely related to both the water entry angle and the spatial position of the water entry surface.We also found the speed of the entering water to have some influence.Our numerical calculation results can be used to rapidly predict the slamming load on a column,which can guide safety evaluations of platform column structures in practical engineering projects.
作者
王树义
王志东
凌宏杰
WANG Shuyi;WANG Zhidong;LING Hongjie(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212000,China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2019年第3期623-627,633,共6页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(51679114)
关键词
平台立柱
入水砰击
空气垫
砰击压力系数
空间分布
platform column
water entry
air cushion
slamming pressure coefficient
spatial distribution
