共查询到18条相似文献,搜索用时 155 毫秒
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以某14 500 TEU集装箱船绑扎桥为研究对象,按相关规范要求进行结构计算并对比结果,分析不同规范对绑扎桥结构设计的影响。结果表明,各规范在有限元模型和设计载荷方面要求差异较大;LR、DNV GL、CCS和BV规范对绑扎桥结构强度和刚度要求大于GL规范;有限元模型范围和边界条件对绑扎桥结构计算结果影响较大,在进行绑扎桥结构计算时应考虑船体对绑扎桥的实际支撑刚度。 相似文献
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针对配置克令吊和绑扎桥的支线集装箱船,将绑扎桥和克令吊筒体结构整合设计成一体,缩减中间甲板宽度,克令吊筒体兼做绑扎桥中间位置的剪力板,在克令吊筒体围壁上开设通道,方便克令吊筒体前后堆箱通过内绑的形式连接克令吊柱体.采用有限元法计算分析绑扎工况和克令吊作业工况下结构强度和刚度,优化中间甲板和绑扎桥设计,验证结构设计的合理性.该整合式结构设计方案,既减小货舱长度,又能提高集装箱绑扎操作的便利性. 相似文献
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为提高大型集装箱船系固校核效率,通过对集装箱绑扎桥和绑扎杆的受力情况进行深入分析,构建适合计算机运算的通用模型,开发一套系固校核系统。该系统提供从图形建模到系固校核的完整解决方案,可实现参数化建模和一键式系固校核,操作方便,性能良好,船型规模能支撑当前最大的集装箱船,满足多家船级社的计算规范要求,大大提高集装箱系固校核的效率,给客户带来显著的经济效益,为相关产品的设计优化提供有力的数据支撑。 相似文献
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针对传统滚装船车辆甲板绑扎加强节点的设计与布置现场可操作性低的特点,以3600车位滚装船的绑扎碗为研究对象,从生产角度出发对绑扎节点进行优化,根据挪威·德国船级社(DNV·GL)对设计节点的要求进行结构计算,并通过装焊试验验证该节点的可行性。结果表明:优化后的新型节点有效提高了绑扎件安装容错率,降低了精度带来的影响。 相似文献
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在集装箱船逐步大型化的大趋势下,对绑扎桥的设计要求逐渐凸显。本文基于CATIA V6软件平台,提出了一套绑扎桥三维设计方法。综合考虑了绑扎桥的实际设计需求以及三维模型化的技术难点,通过利用参数化定义,EKL二次开发手段,以及CATIA V6中片体模型转实体模型,片体模型转FEM模型等强大的原生功能有效地解决了快速建模、CAD/CAE一体化、BOM数据与出图信息集成等一系列难题,充分利用了三维技术减少设计流程中的信息孤岛现象,基于高度集成的参数化模型来提高设计响应速度与准确性。最后通过实践案例予以验证并分析了该方法的工程实用价值。 相似文献
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Previously reported container losses were generally attributed to extremely violent motions of containerships due to adverse weather conditions. However, most existing specifications or standards adopted for containers and lashing equipment meet the requirement of static conditions. Hence, further researches on safer container shipping under heavy sea states are required. Consequently, an experimental study method is proposed to measure the dynamic response of 1/10 scaled lashing bridge and container stack. The scaled model of the lashing bridge is constructed based on the similarity theory. Based on two dimensionless numbers, Froude's number and Cauchy's number, eleven container scaled models are employed. A series of experiments with controlled parameters are performed using a three-degrees shaking table (roll, pitch, heave) to present sufficient data to verify the effectiveness of the numerical model. The results of experiments, numerical simulations and calculations of the VERISTAR procedure (developed according to the BV rule) are compared. This study aimed to explore the mechanical behavior of the lashing bridge and container stack under predetermined driving excitations (roll and pitch) which simulated heavy sea states. According to the results, the model can predict conditions similar to real situations of the lashing bridge and container stacks while storages on the weather deck. 相似文献
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Tomohiro Nakamura Susumu Ota Yoshiyuki Nakajima 《Journal of Marine Science and Technology》2001,6(1):3-12
The appearance of a number of large container ships in the 8000 TEU range raises the importance of a plan for container lashing
arrangements on deck in relation to the design of the ship. Therefore, it is expected that a new method for evaluating the
lashing arrangements on deck will be introduced which is applicable regardless of the ship's size and the lashing pattern,
instead of using the standards of several different societies, as happens at present. To evaluate the lashing arrangements
on deck, the expected maximum values of the forces acting on the containers and lashing rods should be evaluated. This paper
presents a new method of evaluating the container lashing arrangements on a container ship using an "acceleration ellipsoid."
The applicability of the acceleration ellipsoid to an evaluation of the expected maximum values of the forces was examined
by comparing the expected maximum values of the forces calculated by the long-term distribution calculation known as the "Fukuda
method," to those calculated using the acceleration ellipsoid. By comparing these results, it was confirmed that the expected
maximum values of the forces calculated using the acceleration ellipsoid were not less than those calculated through by the
long-term distribution calculation. It is concluded that the acceleration ellipsoid can be used to evaluate the expected maximum
values of the forces acting on containers and lashing rods.
Received: December 14, 2000 / Accepted: March 22, 2001 相似文献
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介绍了集装箱绑扎和紧固技术,梳理了集装箱绑扎件行业的标准现状、技术现状,系统地回顾了集装箱绑扎和紧固件的制造发展历程及市场分布,最后分析了集装箱运输产业的发展现状及趋势,为产业的优化改进提供方向,也为绑扎和紧固技术的发展提供参考。 相似文献