阜新玉龙湖水力自动翻板闸门板结构的数值模拟分析与方案对比

发布时间：2018-06-27 13:10

本文选题：连杆滚轮式翻板闸门 + 有限元分析　；参考：《辽宁工程技术大学》2014年硕士论文

【摘要】：连杆滚轮式翻板闸门是水压力控制门板平衡转动启动闸门的一种闸门形式,以闸门自身的重力和水压力为动力在一定水位条件下自动开启和回关,因此无需其它启闭闸门的动力。与其它闸门相比,这种闸门在各类水利工程中应用广泛,具有节省材料、施工工期短、反映及时准确、对环境干扰小等优点,即美化了环境又产生了良好的经济和社会效益。文章以阜新市玉龙湖钢筋混凝土水力自控翻板闸门工程为研究对象,针对连杆滚轮式翻板闸门设计中的盲点,实际工作时产生的问题展开研究,通过理论分析和数值模拟,分析出三种不同水位情况时门板的应力应变分布及变化规律,进而利用该结果对闸门初始倾角、门板配筋等内容进行优化。本文完成了以下研究工作：(1)根据《水闸设计规范》(SL265-2001)、《水工钢筋混凝土设计规范》(SL191-2008),并结合连杆滚轮式翻板闸门的研究背景和研究现状,指出门板设计中的盲点,提出了课题研究的必要性。并根据连杆滚轮式翻板闸门的工作原理,论述了连杆滚轮式翻板闸门的设计计算方法。闸门过水时动水荷载转化成静水压力的简易近似方法；通过以上理论分析,得到闸门在后倾14°、22°、52°时,闸门受力最为典型。(2)利用有限元软件ADINA分别分析建立了闸门门板在三种工况下的数值分析模型。通过数值模拟分析,得到各点应力和位移；对比分析三种工况的数值模拟计算结果,总结出不同工况时门板的应力应变在闸门上的变化规律。其研究结果表明：闸门在受到水压力作用下,完全后倾过程中,闸门各点应力及应变逐渐增大,背面支座顶部位置处增大幅度最大；在闸门跨中及支座内侧3个截面是应力最大区域,应设为承载力控制截面；闸门顶面为应变最大区域,应设为变形控制截面及裂缝控制截面。(3)针对闸门在设计过程中的相关因素进行了简要的结构优化,并得到了门板倾斜角的最优设计参数。从对闸门的长期稳定性研究发现：在蓄水条件下,闸门后倾角度理想值为14°。
[Abstract]:Connecting rod rolling wheel flip gate is a kind of gate form of water pressure control door plate balance rotation and start gate. It automatically opens and closes under certain water level condition with gravity and water pressure of gate itself as power. Therefore, there is no need for the power of other gates. Compared with other gates, this kind of gate is widely used in all kinds of water conservancy projects. It has the advantages of saving materials, short construction period, timely and accurate reflection, little interference to the environment and so on. It beautifies the environment and produces good economic and social benefits. Taking the hydraulic automatic control gate engineering of Yulong Lake in Fuxin City as the research object, aiming at the blind spot in the design of the connecting rod rolling wheel gate, the problems arising from the actual work are studied, and the theoretical analysis and numerical simulation are carried out. The stress-strain distribution and variation law of the gate plate under three different water level conditions are analyzed, and the initial dip angle of the gate and the reinforcement of the gate plate are optimized by using the results. This paper has completed the following research work: (1) according to "Sluice Design Code" (SL265-2001), "hydraulic reinforced concrete Design Code" (SL191-2008), and combined with the research background and research status of the connecting rod roller tumbling gate, the blind spot in the door plate design is pointed out. The necessity of research is put forward. According to the working principle of the connecting rod rolling wheel gate, the design and calculation method of the connecting rod roll wheel flip gate is discussed. A simple approximate method for transforming the dynamic water load into hydrostatic pressure when the gate passes water is obtained when the gate is tilted backward at 14 掳~ 22 掳~ 52 掳through the above theoretical analysis. The stress of the gate is the most typical. (2) the numerical analysis model of the gate plate under three working conditions is established by using the finite element software Adina. Through numerical simulation and analysis, the stress and displacement of each point are obtained, and the numerical simulation results of three working conditions are compared and analyzed, and the variation law of stress and strain of door plate on the gate under different working conditions is summarized. The results show that under the action of water pressure, the stress and strain at every point of the gate increase gradually, and the maximum increases at the top of the back support. In the middle of the gate span and the inner side of the support, the three sections are the maximum stress areas, which should be set as the bearing capacity control section, and the top plane of the gate is the maximum strain region. The deformation control section and the crack control section should be set. (3) the structural optimization of the relevant factors in the design process of the gate is carried out, and the optimum design parameters of the slanting angle of the gate plate are obtained. From the study of the long-term stability of the gate, it is found that under the condition of water storage, the ideal value of the backward tilting angle of the gate is 14 掳.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV663

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