落地墙对部分框支剪力墙结构转换梁受力性能的影响

发布时间：2018-11-19 20:23

【摘要】：部分框支剪力墙结构是目前高层建筑应用最为广泛的结构体系之一，而转换梁则是整个部分框支剪力墙结构中最为关键的结构构件，转换梁承担着将转换层上部抗侧力体系的水平荷载和竖向荷载传递到转换层下部抗侧力体系上的功能，一旦失效，整个结构将不可避免导致破坏。当转换梁下设置落地墙后，，转换梁的内力、应力、裂缝和变形性能都有较大变化，研究落地墙的设置对转换梁受力性能的影响及影响程度的大小具有重要的实际意义。本文对部分框支剪力墙结构和转换梁的研究和应用现状进行了简要介绍，并对钢筋混凝土结构有限元分析的特点进行了简述，通过有限元软件ANSYS建立了带落地墙和不带落地墙的部分框支剪力墙结构的局部模型，并改变转换梁上部剪力墙的布置和转换层所在位置，研究了在上述情况下，当竖向荷载和水平荷载作用时，落地墙的设置对转换梁内力、应力、裂缝和变形性能的影响以及影响程度的大小。本文的研究表明落地墙的设置对转换梁的内力、应力、裂缝和变形性能都有一定的改善作用，并且这种改善作用随着转换梁上部剪力墙的布置和转换层所在位置的变化而变化。
[Abstract]:The partial frame-supported shear wall structure is one of the most widely used structural systems in high-rise buildings at present, and the transfer beam is the most important structural member in the whole frame-supported shear wall structure. The transfer beam bears the function of transferring the horizontal load and vertical load from the upper part of the transfer layer to the lateral resistance system of the lower part of the transfer layer. Once failure occurs, the whole structure will inevitably lead to failure. When the floor wall is installed under the transfer beam, the internal force, stress, crack and deformation performance of the transfer beam are greatly changed. It is of great practical significance to study the influence of the installation of the floor wall on the mechanical performance of the transfer beam and the magnitude of the influence degree. This paper briefly introduces the research and application of some frame-supported shear wall structures and transfer beams, and briefly describes the characteristics of finite element analysis of reinforced concrete structures. Based on the finite element software ANSYS, the local models of the shear wall structure with and without the floor wall are established, and the arrangement of the upper shear wall of the transfer beam and the location of the transfer floor are changed. When the vertical load and the horizontal load are applied, the influence of the installation of the floor wall on the internal force, stress, crack and deformation performance of the transfer beam and the magnitude of the influence degree are discussed. The research in this paper shows that the installation of floor wall can improve the internal force, stress, crack and deformation performance of the transfer beam, and the improvement effect varies with the arrangement of the upper shear wall of the transfer beam and the location of the transfer layer.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU973.16

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