漂浮状态自升式改装平台波浪运动响应  

Wave Motion Response of Modified Jack-up Platform in Floating State

作　　者：高璞 耿宝磊[2] 谷雪清 宋志宇 金瑞佳 周俊龙 GAO Pu;GENG Baolei;GU Xueqing;SONG Zhiyu;JIN Ruijia;ZHOU Junlong(China Construction Sixth Engineering Bureau Co.,Ltd.,Tianjin 300171,China;Tianjin Research Institute of Water Transport Engineering,Ministry of Transport,Tianjin 300456,China;College of Harbor,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,Jiangsu,China)

机构地区：[1]中国建筑第六工程局有限公司,天津300171 [2]交通运输部天津水运工程科学研究所,天津300456 [3]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《中国海洋平台》2024年第4期68-74,108,共8页China offshore Platform

基　　金：国家自然科学基金联合基金项目(编号:U2106223);中建股份科技研发课题(编号:CSCEC-2020-Z-21);中央基本科研业务费资助项目(编号:TKS20230106)。

摘　　要：为满足跨海桥梁的施工要求,将半潜驳船改装为施工平台,为了解其在漂浮状态下的波浪动力特性,基于势流理论建立波浪与自升式改装平台的三维全尺寸数学模型。通过时域内的水动力计算,对自升式改装平台处于漂浮状态时,桩腿下放不同深度以及不同来浪方向的平台运动响应进行分析。计算发现:当平台桩腿下放不同深度时,改装平台整体处于稳定状态,其整体运动响应与平台自身尺寸相比都很小;在不同来浪方向波浪作用下,改装平台在水平方向与垂荡方向的运动响应幅度和运动轨迹不同,平台在桩腿下放过程中需要尽可能保证迎浪面积小。所得结论对深水自升式平台在漂浮状态的整体稳定性研究具有一定的指导意义。In order to meet the construction requirement of cross-sea bridges,the semi-submersible barge is converted into a construction platform.In order to understand its wave dynamic characteristics in the floating state,a three-dimensional full-size mathematical model of the wave and modified jack-up platform is established based on the potential flow theory.Through the hydrodynamic calculation in the time domain,the platform motion response at different pile leg lowing depths and different wave directions is analyzed when the modified jack-up platform is in the floating state.Through calculation,it is found that:when the platform pile legs are lowered at different depths,the modified platform as a whole is in a stable state,and its overall motion response is small compared to the size of the platform itself;under the action of waves in different wave directions,the motion response amplitude and motion trajectory of the modified platform in the horizontal direction and vertical direction are different,and during the process of the pile legs lowering,efforts should be made to ensure that the platform has a small wave facing area as much as possible.The conclusion obtained is of certain guiding significance for the overall stability study of the deepwater jack-up platform in the floating state.

关 键 词：自升式平台 漂浮状态 势流理论 水动力计算 动力响应 

分 类 号：U674.38[交通运输工程—船舶及航道工程] P75[交通运输工程—船舶与海洋工程]