海运甲板重大件设备刚性系固方案校核研究

发布时间：2018-08-14 17:48

【摘要】：近年来,重大件运输已成为远洋运输市场中的重要组成部分。重大件设备通常都具有超高、超长、超重的特点,积载在船舶甲板上,多采用刚性系固方式。目前国内外针对重大件刚性系固校核评判没有明确的、有效的规范。由此,重大件设备运输过程中因重大件设备系固原因引起的事故时有发生,造成了生命和财产损失。因此,建立为之有效的刚性系固方案校核评判规范,确保系固方案的安全性,已成为一个重要课题。本文从甲板重大件设备的种类及其刚性系固设备入手,研究重大件所受外力的计算方法,分析基于直接计算法的刚性系固校核方法。结合有限元思想,提出了基于ANSYS的重大件设备刚性系固方案校核方法。本文采用基于ANSYS的重大件刚性系固方案校核方法对某一工程实例刚性系固方案进行校核,分别对装船机设备、系固设备和局部船体的结构强度进行校核。校核结果显示:螺旋钢管和插板的连接处出现了应力集中,应力值接近螺旋钢管材料的许用应力值,建议在螺旋钢管和插板的连接处设置应力释放孔;装船机设备、系固设备和局部船体的强度均满足要求。该校核结果表明该刚性系固方案是安全有效的,与使用直接计算校核方法所得结果相同。基于ANSYS的重大件刚性系固方案校核方法输出的应力结果直观、可靠,能精确地找到系统结构强度的薄弱区域,由此改良其刚性系固方案,具有实际应用价值。本论文的研究成果对重大件设备刚性系固方案的校核评判具有一定的指导意义,为国内研究重大件海上安全运输提供了技术支持。
[Abstract]:In recent years, the transportation of major parts has become an important part of ocean transportation market. Heavy equipment is usually super-high, super-long, overweight, stowage on the ship deck, most of the rigid fastening mode. At present, there is no clear and effective criterion for the evaluation of rigid fastening and checking of major parts at home and abroad. As a result, accidents caused by the fastening of major pieces of equipment occur from time to time, resulting in loss of life and property. Therefore, it has become an important subject to establish an effective criterion for the verification and evaluation of rigid fastening schemes and to ensure the safety of the fastening schemes. Starting with the types of deck heavy equipment and its rigid fastening equipment, this paper studies the calculation method of the external force of the heavy parts, and analyzes the method of rigid fastening and checking based on the direct calculation method. Based on the idea of finite element method, a method of checking the rigid fastening scheme of heavy parts equipment based on ANSYS is proposed. In this paper, the method of checking the rigid fastening scheme of major parts based on ANSYS is used to check the rigidity fastening scheme of a certain engineering example, and the structural strength of the loading equipment, the fastening equipment and the partial hull are checked respectively. The checking results show that the stress concentration appears at the joint of spiral steel pipe and socket plate, and the stress value is close to the allowable stress value of spiral steel pipe material. It is suggested that the stress release hole should be set at the joint of spiral steel pipe and socket plate, and the equipment of loading machine should be installed. Both the fastening equipment and the strength of the partial hull meet the requirements. The results show that the rigid fastening scheme is safe and effective, and the results are the same as those obtained by the direct calculation method. The stress output from the checking method of the rigid fastening scheme for major parts based on ANSYS is intuitionistic, reliable, and can accurately find the weak area of the structural strength of the system. Therefore, it is of practical value to improve the rigid fastening scheme of the system. The research results of this paper have a certain guiding significance for the verification and evaluation of the rigid fastening scheme of major parts equipment, and provide technical support for the domestic research on the maritime safety transportation of major parts.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U695.26

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