浮船坞抱桩系泊装置结构优化设计

发布时间：2018-04-26 06:29

本文选题：浮船坞 + 系泊装置　；参考：《大连理工大学》2014年硕士论文

【摘要】：浮船坞是一种用于船舶修造的工程船舶,它不仅可用于修造船舶,还可用于打捞沉船,运送深水船舶通过浅水航道等。建造浮船坞的最初目的和干船坞一样,是为了检修船舶的水下部分、推进器和舵等。同时也可对船体的水上部分、船舶机械和装置等进行维修保养。为了保证浮船坞泊碇状态下遭受水流力、风力和波浪力影响时能够正常而安全地运营,必须为其设置系泊装置。浮船坞的泊碇形式主要有两种：锚泊泊碇方式和抱桩泊碇方式。与锚泊泊碇相比,抱桩泊碇具有对周围水域没有影响,浮船坞的平面位置不会变动,便于岸坞之间设备运送等优点,可适用于波浪载荷相对较小的水域。浮船坞抱桩泊碇装置由导柱和卡环两部分组成,导柱和卡环之间的配合关系使得导柱结构尺寸大小直接影响卡环结构的设计,因此,对导柱结构的设计及其优化就显得格外重要。本论文以某八万吨浮船坞的抱桩系泊装置结构设计为例,利用有限元分析软件,计算抱桩系泊装置在浮船坞最大沉深、最大受力以及最小吃水三个工况下遭受外力作用时,浮船坞坞体和抱桩系泊装置的应力及变形大小,验证了多套设计方案的结构强度能否满足规范的要求,并结合参数化建模方法和结构优化理论,对较优的结构设计方案进一步优化,得到最佳设计方案。通过对导柱结构优化计算结果的分析,得出在导柱结构设计时,其结构尺寸应选取较小的直径和较大的外板板厚的方案,这样既能降低自身结构的重量,又减小了卡环的尺寸大小,降低了卡环结构的重量,使得抱桩泊碇装置整体结构重量下降。从初始的结构设计到结构优化设计,以及确定最终设计方案的整个过程对今后浮船坞抱桩泊碇装置的设计和建造工作具有一定的指导作用和参考意义。
[Abstract]:Floating dock is a kind of engineering ship used for ship repair. It can not only be used to build ship, but also can be used to salvage sunken ship, transport deep-water ship through shallow water channel and so on. Floating docks were originally built to overhaul the underwater parts of the ship, propellers, rudders, and so on, just as dry docks. At the same time, the hull of the water part, ship machinery and equipment to carry out maintenance. In order to ensure the normal and safe operation of floating dock under the influence of current force, wind force and wave force, mooring devices must be set up for it. There are two types of mooring in floating dock: mooring and piling. Compared with Anchorage, pile-holding Anchorage has no influence on the surrounding waters, the plane position of floating dock will not change, and it is convenient to transport equipment between docks. It can be used in waters where the wave load is relatively small. The pile-holding Anchorage device of floating dock consists of two parts: the guide post and the clamping ring. The size of the guide post structure has a direct impact on the design of the clasp structure because of the matching relationship between the guide post and the clamping ring. It is very important to design and optimize the guide column structure. In this paper, taking the structural design of the pile-holding mooring device of a certain 80,000 ton floating dock as an example, using the finite element analysis software, the external force acting on the pile-holding mooring device under the three working conditions of the maximum depth, the maximum force and the minimum draught of the floating dock is calculated. The stress and deformation of floating dock body and mooring device with piles are verified whether the structural strength of many sets of design schemes can meet the requirements of the code, and the parameterized modeling method and structural optimization theory are combined. The optimal design scheme is obtained by further optimization of the better structural design scheme. Through the analysis of the optimum calculation results of the guide column structure, it is concluded that in the design of the guide column structure, the scheme of smaller diameter and larger outer plate thickness should be selected in the design of the guide column structure, which can not only reduce the weight of its own structure, but also reduce the weight of the structure. The size of the clamping ring is also reduced, and the weight of the clamping ring structure is reduced, which results in the decrease of the overall structure weight of the pile-holding Anchorage device. The whole process from the initial structural design to the structural optimization design and the determination of the final design scheme have a certain guiding role and reference significance for the design and construction of the pile-holding Anchorage device in the floating dock in the future.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U673.332

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