1700TEU集装箱船甲板舱口角隅疲劳强度评估

在消化吸收德国劳氏船级社（GL）规范的基础上,对沪东造船厂建造的1700TEU集装箱船大开口甲板舱口角隅进行了疲劳强度分析和评估,并讨论了主要参数对采用简化疲劳强度评估方法所得到的评估结果的影响。计算结果表明,该方法对集装箱船大开口甲板舱口角隅处的结构设计具有一定的实用意义和参考价值。     

一起摔箱事故的分析与处理

对一起轮胎式集装箱门式起重机 (RTG)摔箱事故进行分析 ,找到了故障原因 :起升脉冲编码器的缺陷 ,系统超速保护开关的复位方式选用不当 ,缺少软件保护 ,以及制动器的设计与设置方面的问题等 ,认为目前国内在RTG的制造和使用中存在一些共同的安全问题 ,RTG上除设机械制动外 ,还应设电气制动     

集装箱码头智能作业管理系统探讨

结合集装箱码头作业及作业管理特点,给出了基于多智能体方法的集装箱码头作业管理系统的智能体组成及其体系结构,简要介绍了智能体间的协作及智能体的工作原理,并讨论了智能体间的通信及系统的实现方法。     

集装箱船扭转强度和加强方式研究

介绍约束扭转计算原理,分析集装箱船的结构和受力特点,利用MSC/Nastran软件探讨了集装箱船的扭转强度计算方法。在现有结构形式的基础上,提出几种可能提高结构扭转强度的结构加强方案,通过有限元分析比较各方案对于增加同样重量的钢料船体结构中翘曲应力变化情况,比对抗扭效果,研究在考虑成本基础上提高集装箱船抗扭强度的加强方案优先顺序,结果显示对于支线型集装箱船增加舱口围厚度可更有效提高其抗扭强度。     

集装箱船配载问题的粒子群算法研究

针对集装箱船配载优化中的Bay位优选问题,提出以倒箱量、重心横向偏移和初稳性高为目标,以箱位与Bay位的一致和Bay位重量为约束条件的数学模型,提出一种多目标离散粒子群算法(MODPSO)求解之,得到该算法优化后的Pareto解集和Pareto解迭代过程中的变化趋势图,为集装箱船配载问题提供多种方案以供备选,从而达到在提高集装箱船装载效率、节约装载成本和时间、使集装箱船获得稳定航行状态等目标间取得更好平衡的目的。     

Ultimate strength of container ships subjected to combined hogging moment and bottom local loads,Part 2: An extension of Smith's method

This paper is the second of two companion papers concerning the ultimate hull girder strength of container ships subjected to combined hogging moment and bottom local loads. The nonlinear finite element analysis in Part 1 has shown that local bending deformation of a double bottom due to bottom lateral loads significantly decreases the ultimate hogging strength of container ships. In this Part 2, extending Smith's method for pure bending collapse analysis of a ship's hull girder, a simplified method of progressive collapse analysis of ultimate hogging strength of container ships considering bottom local loads is developed. The double bottom is idealized as a plane grillage and the rest part of the cross section as a prismatic beam. An average stress-average strain relationship of plate/stiffened plate elements employed in Smith's method is transformed into an average stress-average plastic strain relationship, and implemented in the conventional beam finite element as a pseudo strain hardening/softening behaviors. The extended Smith's method is validated through a comparison with nonlinear finite element analysis.     

基于CFD的某型满足IRCC-SP符号冷藏集装箱船货舱通风数值模拟

摘 要：以某型满足ABS船级社IRCC-SP符号冷藏集装箱船的货舱通风系统为研究对象,本文采用计算流体动力学CFD方法对通风系统的风机前端进风段和风机后端风管段分别进行数值模拟和流场分析。根据计算结果优化进风段的设计以降低进风阻力,并调整风管结构以满足IRCC-SP符号的风量要求。基于CFD方法设计的货舱通风系统顺利通过了IRCC-SP模型试验,模拟结果与试验数据吻合良好。研究表明,运用CFD方法进行通风系统分析,可以清晰地了解流场分布、通风阻力和风量分配等信息,以此评估通风方案的优劣,并指导优化设计提供。     

Ultimate strength of container ships subjected to combined hogging moment and bottom local loads part 1: Nonlinear finite element analysis

This paper is the first of two companion papers concerning the ultimate hull girder strength of container ships subjected to combined hogging moment and bottom local loads. In the midship part of container ships, upward bottom local loads are usually larger than the downward ones. This leads to the increase of biaxial compression in the outer bottom plating and the reduction of the ultimate hull girder strength in the hogging condition. In this Part 1, the collapse behavior and ultimate strength of container ships under combined hogging moment and bottom local loads are analyzed using nonlinear finite element method. Buckling collapse behavior of bottom stiffened panels during the progressive collapse of a hull girder is closely investigated. It has been found that major factors of the reduction of ultimate hogging strength due to bottom local loads are (1) the increase of the longitudinal compression in the outer bottom and (2) the reduction of the effectiveness of the inner bottom, which is on the tension side of local bending of the double bottom. The obtained results will be utilized in the Part 2 paper to develop a simplified method of progressive collapse analysis of container ships under combined hogging moment and bottom local loads.     

海陆联运条件下集装箱空箱调运问题的研究

空箱调运已成为集装箱运输的一个重大难题。文章分析了海陆联运条件下集装箱空箱调运产生的主、客观因素及空箱调运管理中存在的问题,在此基础上,从加强船公司之间的合作、船公司与租箱公司之间的合作、提高集装箱信息化管理水平等方面研究了优化和减少集装箱空箱调运的多种措施。     

国际箱运班轮公司战略收购的博弈分析——马士基收购P＆O为例

通过背景分析引出马士基收购铁行渣华案例，从博弈理论角度阐述了马士基公司的收购战略意图，警示相关行业应引起足够的重视。