大型耙吸挖泥船结构设计要点  

Analysis of Structural Design Key Point of Large Trailing Suction Hopper Dredger

作　　者：荆海东[1] 杨青[1] 谢昊 JING Hai-dong;YANG Qing;XIE Hao(Marine Design and Research Institute of China,Shanghai 200011,China)

机构地区：[1]中国船舶及海洋工程设计研究院,上海200011

出　　处：《船海工程》2024年第1期82-86,共5页Ship & Ocean Engineering

摘　　要：为实现大型耙吸挖泥船结构设计安全、合理、可靠,以某大型耙吸挖泥船为例,分析大型耙吸挖泥船结构设计特点,从结构设计、强度评估、疲劳评估和振动评估等角度论证其设计要点,通过对泥舱结构设计分析,给出泥舱设计的关键节点,对关键节点进行强度分析和疲劳分析,结果表明,该船局部关键区域应力水平较高,低周疲劳在关键区域的疲劳中占据主要地位,建立三维有限元模型计算挖泥船固有频率,对比该大型耙吸挖泥船激励频率与固有频率,结果表明,船体总振动固有频率通常可以避开激励频率,生活楼固有频率与激励频率较为接近。In order to carry out safe,reasonable and reliable structural design of large trailing suction hopper dredger(TSHD),taking a large TSHD as an example,the design characteristics of large TSHD were analyzed,and the design points of large TSHD were demonstrated from the perspectives of structure design,strength evaluation,fatigue evaluation and vibration evaluation.Through the analysis of the structure design of mud tank,the critical area of mud tank was given.The strength and fatigue analysis of critical area showed that the stress level of the local critical area is high,and the low-cycle fatigue plays a major role.A three-dimensional FE model was established to calculate the natural frequency,showing that the natural frequency of large TSHD can usually avoid the excitation frequency,while the natural frequency of the living quarter is close to the excitation frequency.

关 键 词：大型耙吸挖泥船 结构设计 中剖面设计 关键区域 强度评估 疲劳评估 振动控制 

分 类 号：U674.31[交通运输工程—船舶及航道工程]