基于ABAQUS的水闸闸室三维有限元分析

发布时间：2018-05-08 20:25

本文选题：水闸 + 简化法　；参考：《石河子大学》2014年硕士论文

【摘要】：水闸是一种在水利工程中运用十分普遍的水工建筑物。现在我国水闸结构计算方法主要是将闸室底板、闸墩、检修便桥、工作桥、交通桥等构件单独计算，没有考虑各个构件之间的影响。这样得到的计算结果就会跟水闸结构实际工程的受力情况有一定的偏差。于是现在较为准确的水闸结构计算方法是有限元法[1]，它能够较好地反映水闸结构的整体性和真实性，能够很好地处理闸室各个构件之间的作用以及闸室与地基之间的相互影响。因此，使用有限元法，考虑闸室各个构件之间的相互作用，将闸室底板、闸墩、排架、工作桥、交通桥、检修便桥和地基作为一个计算整体，建立三维有限元模型，分析水闸结构的应力和位移分布情况，能够为水闸结构计算提供科学的理论依据，同时能够在水闸结构安全、稳定等方面起到重要作用。本文以某开敞式水闸为研究对象，首先懫用平面简化法对水闸闸室进行了稳定计算，其次利用ABAQUS有限元软件建立闸室三维有限元模型，对水闸闸室进行稳定计算以及结构分析。全文主要内容具体如下： 1.通过阅读大量文献，阐述了国内外水闸结构计算方法的研究进展，掌握了国内外水闸结构计算方法，以及现有水闸结构计算方法存在的问题。 2.懫用平面简化法计算水闸在完建期、设计洪水位、校核洪水位、地震等四种情况的闸室稳定性，并对比四种情况的计算结果。 3.利用ABAQUS软件建立水闸地基三维有限元模型，对完建期、设计洪水位、校核洪水位、地震等四种情况的闸室进行稳定计算，并对四种计算结果进行分析。 4.将两种方法的闸室稳定计算结果进行对比分析，验证水闸地基三维有限元模型建立的合理性和计算结果的准确性。 5.根据水闸地基三维有限元模型，分析水闸闸室底板、闸墩、排架、工作桥、交通桥、检修桥等结构的应力位移变化情况和承载能力，进而对水闸结构的工作性态进行评价。 6.通过对某开敞式水闸闸室进行有限元分析研究，表明三维有限元法能够准确、直观地反应水闸闸室的空间受力状态，，为实际工程的建设和运行提供科学的指导作用。
[Abstract]:Sluice is a kind of hydraulic structure which is widely used in hydraulic engineering. At present, the main calculation method of sluice structure in our country is to calculate separately the components such as floor slab, pier, repair bridge, working bridge, traffic bridge and so on, without considering the influence of each component. The calculated results will deviate from the actual engineering stress of sluice structure. Therefore, the more accurate calculation method of sluice structure is the finite element method [1], which can well reflect the integrity and authenticity of the sluice structure, and can deal with the interaction between the various components of the sluice chamber and the foundation. Therefore, using the finite element method, considering the interaction between the various components of the gate chamber, the three-dimensional finite element model is established by using the floor plate, pier, bent frame, working bridge, traffic bridge, repair bridge and foundation as a whole. The analysis of the stress and displacement distribution of sluice structure can provide a scientific theoretical basis for the calculation of sluice structure and play an important role in the safety and stability of sluice structure. In this paper, an open sluice is taken as the research object. Firstly, the stability of the sluice chamber is calculated by plane simplified method. Secondly, the three-dimensional finite element model of the sluice chamber is established by using ABAQUS finite element software, and the stability calculation and structural analysis of the sluice chamber are carried out. The main contents of the paper are as follows: 1. Through reading a large number of literatures, this paper expounds the research progress of sluice structure calculation methods at home and abroad, grasps the calculation methods of sluice structure at home and abroad, and the problems existing in the existing sluice structure calculation methods. 2. The plane simplified method is used to calculate the stability of the sluice chamber in the construction period, the design flood level, the check flood water level and the earthquake, and the calculated results of the four conditions are compared. 3. The 3D finite element model of sluice foundation is established by using ABAQUS software. The stability calculation is carried out for the sluice chamber under four conditions, namely, the completed construction period, the design flood water level, the check flood water level and the earthquake, and the results of the four kinds of calculation are analyzed. 4. The stability calculation results of the two methods are compared and analyzed to verify the rationality and accuracy of the 3D finite element model of sluice foundation. 5. According to the three dimensional finite element model of sluice foundation, the stress displacement and bearing capacity of sluice chamber floor, pier, bent frame, working bridge, traffic bridge and overhaul bridge are analyzed, and the working behavior of sluice structure is evaluated. 6. Through the finite element analysis of an open sluice chamber, it is shown that the three-dimensional finite element method can accurately and intuitively reflect the spatial stress state of the sluice chamber and provide scientific guidance for the construction and operation of practical projects.
【学位授予单位】：石河子大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV662

【参考文献】