艉部先行模式下的船-冰碰撞载荷模型试验研究  

Experimental Study on the Ship-Ice Impact Load under Stern-first Mode

作　　者：孙剑桥[1,2] 黄焱 SUN Jianqiao;HUANG Yan(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300350,China;School of Civil Engineering,Tianjin University,Tianjin 300350,China;Tianjin Key Laboratory of Port and Ocean Engineering,Tianjin University,Tianjin 300350,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300350 [2]天津大学建筑工程学院,天津300350 [3]天津大学港口与海洋工程天津市重点实验室,天津300350

出　　处：《中国造船》2021年第2期106-118,共13页Shipbuilding of China

基　　金：国家重点研发计划项目(2018YFC1406000);工信部高技术船舶科研项目(2017-614;MC-201918-C10);天津市科技重大专项资助(17ZXFWGX00070)。

摘　　要：双向航行极地船舶带来了艉部先行的全新冰区航行模式,然而现行冰级规范中针对艉部区域的设计冰载荷及结构加强水平仍存在着较大的分歧。以我国双向破冰极地科考船雪龙2号为原型开展冰水池物理模型试验,对艉部先行模式下船尾与巨型浮冰的碰撞进行模拟。在碰撞过程中船体冰载荷由粘贴在船尾表面的触觉传感器测得。通过艉部碰撞载荷测试数据,建立了以船体区域因子为基础的艉部区设计载荷评估依据。通过对不同超越概率下艉部区域因子的考察,最终推荐IACS或DNV的建议值,用于双向航行极地船舶的艉部区结构强度设计。针对不同冰级规范艉部区域因子取值的差异,通过讨论设计极限状态与冰条件之间的对应,指出区域因子与极限状态的潜在关联。Double acting ships bring a new mode of ice operation,i.e.,running astern in heavy ice conditions,but disagreements still exist in the industry on the design ice load for stern areas.A series of model tests was conducted in the ice tank to simulate the ship-ice impact process under stern-first mode.The ice loads were measured by a tactile sensor attached on the stern of the model ship.Hull area factor was determined based on the measured ice loads and selected to assess the design load level of the stern area.Based on the evaluation of the area factor under different probabilities of exceedance,the design values from IACS or DNV ice class rules are recommended.Furthermore,the potential link between the area factor and limit state is revealed based on the discussion of the design scenarios and ice conditions.

关 键 词：艉部先行 船-冰碰撞 冰载荷 模型试验 区域因子 

分 类 号：U661.73[交通运输工程—船舶及航道工程]