墙体开洞对转换梁受力性能影响分析

发布时间：2018-04-22 16:33

本文选题：转换梁 + 墙体开洞　；参考：《哈尔滨工程大学》2014年硕士论文

【摘要】：高层建筑在沿高度方向因使用功能对空间的需求不同,往往会设置转换层结构,而转换梁结构由于荷载传递路径明确,便于工程设计计算与分析,已成为实现垂直转换最广泛的结构形式。但因结构本身的复杂性,转换梁的受力性能一直是设计中的重难点问题,有关方面的理论研究还不够系统、全面,特别是墙体开洞对转换梁受力性能影响的分析,所以对墙体开洞转换梁受力性能和变形特征还需进一步研究。本文首先通过有限元分析软件SAP2000和PK对墙体开洞转换梁受力性能进行了分析,其受力性能与洞口宽度、洞口高度及洞口下方墙体高度有关,根据计算结果得出不同洞口尺寸及位置的差异,并给出建议的计算方法。其次,本文以深梁模型入手,利用弹性力学基本理论对墙体满跨不开洞转换梁的应力及位移进行了推导,给出了应力及位移分量的解析解;利用有限单元法对深梁进行了近似求解,将深梁划分成10等分,求出每根浅梁的应力,绘制整个深梁的应力分布。之后介绍了有限元法分析时的一般过程,对建筑结构分析中可能需要用到的单元作了简述,为有限元软件分析提供理论依据。最后,本文对转换梁有限元分析所用的软件ANSYS及选用的单元进行了简要介绍。用有限元软件ANSYS对墙体满跨不开洞模型、墙体满跨开中洞模型、墙体满跨开对称边洞模型进行了竖向荷载作用下的应力和变形分析。结果表明:洞口的开设对墙体的应力分布、转换梁中性轴的位置及框支柱的竖向应力都有非常大的影响。
[Abstract]:Because of the different space requirement of the function of the high-rise building along the height direction, the transfer layer structure is often set up, while the transfer beam structure is convenient for engineering design calculation and analysis because of the clear load transfer path. Has become the most extensive structural form of vertical conversion. However, due to the complexity of the structure itself, the mechanical performance of the transfer beam has always been a difficult and important problem in the design. The theoretical research on the related aspects is not systematic and comprehensive, especially the analysis of the influence of the wall opening on the mechanical performance of the transfer beam. Therefore, the mechanical behavior and deformation characteristics of the wall open-hole transfer beam need further study. In this paper, the finite element analysis software SAP2000 and competition are used to analyze the mechanical behavior of the wall opening transfer beam, which is related to the width of the hole, the height of the hole and the height of the wall below the hole. According to the calculation results, the difference of the size and position of different openings is obtained, and the proposed calculation method is given. Secondly, based on the deep beam model and the basic theory of elasticity, the stress and displacement of the full span transition beam are deduced, and the analytical solution of the stress and displacement component is given. The finite element method is used to approximate the deep beam. The deep beam is divided into 10 equal parts. The stress of each shallow beam is obtained and the stress distribution of the whole deep beam is plotted. Then the general process of finite element analysis is introduced, and the elements that may be used in the analysis of building structure are briefly described, which provides a theoretical basis for the analysis of finite element software. Finally, this paper briefly introduces the software ANSYS and the selected elements used in the finite element analysis of the transfer beam. The finite element software ANSYS is used to analyze the stress and deformation of the full span opening model, the wall full span opening model, the wall full span symmetrical side hole model and the vertical load model. The results show that the opening of the hole has a great influence on the stress distribution of the wall, the position of the neutral axis of the transfer beam and the vertical stress of the frame support.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU973.3

【参考文献】