双悬臂钢叠梁闸门静动力学有限元分析
发布时间：2018-12-13 19:40
【摘要】：钢闸门的应力分析研究一直是水利工作者重点关注的课题。由于现实实验研究受到了加载问题、结果监测问题的限制,对于钢闸门应力分析问题的研究多依赖于数值方法。东武仕水库以防洪、供水为主,同时还具有水利发电等多功能的大型水利枢纽,由于水库建成已久,水库泄洪洞等结构都存在一定隐患,威胁着工程自身的安全。为了保证水库下游重要城市及基础设施安全,需对水库泄洪洞除险加固。东武仕水库泄洪洞为有压短管接拱式无压涵洞型式,分3孔,且两端都是悬臂。经分析,该泄洪洞除险加固项目施工方案需采取运用两个闸门中墩实行双悬臂组合式钢叠梁来封堵闸门,在检修门上游进行水下临时封堵的方案。双悬臂闸门水下封堵方式在实际工程中应用极少,存在很多的实质问题需要研究。针对东武仕水库双悬臂钢叠梁闸门的运行方式和受力特点,采用有限元数值模拟的方法对钢闸门进行静力学和动力学模态分析,在静力学分析的基础上计算出主梁、面板的最大弯曲应力以及腹板的最大剪应力,并对钢闸门进行动力学模态分析,分析不同工况下的自振频率和自振频率所对应的振型,分析结果表明,静力学和动力学两种方法来分析闸门的安全性,都能够较好的验证闸门的最危险部位。因此,本文中针对泄洪洞深水封堵闸门,建立双悬臂钢叠梁闸门有限元分析模型,应用ANSYS软件就闸门的刚度、振动情况就此展开对闸门的静力学和动力学方面的研究。本文基于有限元法,对东武仕水库钢闸门应力进行分析,从宏观的角度探究在荷载的作用下钢闸门的应力形态,从而为现实类似工程提供一定的参考。
[Abstract]:The stress analysis of steel gate has always been the focus of attention of water conservancy workers. Due to the limitation of the result monitoring problem due to the loading problem, the research on the stress analysis of steel gate depends on the numerical method. Dongwushi reservoir is a large water conservancy project with many functions, such as flood control, water supply and so on. Because the reservoir has been built for a long time, there are some hidden dangers in the structure of reservoir flood discharge tunnel and so on, which threaten the safety of the project itself. In order to ensure the safety of the important cities and infrastructure downstream of the reservoir, it is necessary to reinforce the flood discharge tunnel of the reservoir. Dongwushi reservoir flood discharge tunnel is an arch-free culvert with short pressure pipe. It is divided into 3 holes and has cantilever at both ends. According to the analysis, the construction scheme of the flood discharge tunnel danger removal and reinforcement project should adopt the scheme of double cantilever composite steel laminated beam with two middle piers of the gate to seal the gate, and carry out the temporary underwater plugging upstream of the repair gate. Double cantilever gate underwater plugging is rarely used in practical engineering, and there are many essential problems to be studied. In view of the operation mode and stress characteristics of double-cantilever steel laminated gate in Dongwushi Reservoir, the static and dynamic modal analysis of steel gate is carried out by using finite element numerical simulation method, and the main beam is calculated on the basis of static analysis. The maximum bending stress of the face plate and the maximum shear stress of the web plate are analyzed. The dynamic modal analysis of the steel gate is carried out, and the corresponding modes of the natural vibration frequency and the natural vibration frequency under different working conditions are analyzed. The results show that, Static and dynamic methods to analyze the safety of the gate, can better verify the most dangerous part of the gate. In this paper, the finite element analysis model of double cantilever steel laminated beam gate is established, and the stiffness and vibration of the gate are studied by using ANSYS software. Based on the finite element method, the stress of the steel gate of Dongwushi Reservoir is analyzed in this paper, and the stress form of the steel gate under the action of load is explored from the macroscopic angle, thus providing a certain reference for the similar engineering in reality.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV663
本文编号：2377103
[Abstract]:The stress analysis of steel gate has always been the focus of attention of water conservancy workers. Due to the limitation of the result monitoring problem due to the loading problem, the research on the stress analysis of steel gate depends on the numerical method. Dongwushi reservoir is a large water conservancy project with many functions, such as flood control, water supply and so on. Because the reservoir has been built for a long time, there are some hidden dangers in the structure of reservoir flood discharge tunnel and so on, which threaten the safety of the project itself. In order to ensure the safety of the important cities and infrastructure downstream of the reservoir, it is necessary to reinforce the flood discharge tunnel of the reservoir. Dongwushi reservoir flood discharge tunnel is an arch-free culvert with short pressure pipe. It is divided into 3 holes and has cantilever at both ends. According to the analysis, the construction scheme of the flood discharge tunnel danger removal and reinforcement project should adopt the scheme of double cantilever composite steel laminated beam with two middle piers of the gate to seal the gate, and carry out the temporary underwater plugging upstream of the repair gate. Double cantilever gate underwater plugging is rarely used in practical engineering, and there are many essential problems to be studied. In view of the operation mode and stress characteristics of double-cantilever steel laminated gate in Dongwushi Reservoir, the static and dynamic modal analysis of steel gate is carried out by using finite element numerical simulation method, and the main beam is calculated on the basis of static analysis. The maximum bending stress of the face plate and the maximum shear stress of the web plate are analyzed. The dynamic modal analysis of the steel gate is carried out, and the corresponding modes of the natural vibration frequency and the natural vibration frequency under different working conditions are analyzed. The results show that, Static and dynamic methods to analyze the safety of the gate, can better verify the most dangerous part of the gate. In this paper, the finite element analysis model of double cantilever steel laminated beam gate is established, and the stiffness and vibration of the gate are studied by using ANSYS software. Based on the finite element method, the stress of the steel gate of Dongwushi Reservoir is analyzed in this paper, and the stress form of the steel gate under the action of load is explored from the macroscopic angle, thus providing a certain reference for the similar engineering in reality.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV663
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