构件式玻璃幕墙支承结构设计及研究

发布时间：2019-06-03 23:04

【摘要】：玻璃幕墙作为一种新型的建筑外围结构被大量使用,特别是构件式玻璃幕墙因其技术成熟、施工简单用之更多。然而,在众多已建成的幕墙工程中时常有玻璃坠落、横梁扭转等不安全现象发生。因此,如何保证幕墙的安全性能成为幕墙行业特别关注的问题。本文结合工程实例,针对构件式玻璃幕墙在设计过程中存在的问题进行了一系列的研究。构件式玻璃幕墙中的立柱是支承幕墙的关键构件,其受力计算正确与否不仅影响幕墙的安全可靠性,也是影响幕墙建设投资的主要因素。本文结合实际工程的设计结果,经过理论分析比较,得出多跨铰接梁力学模型与立柱实际受载情况比较吻合,并且应用有限单元法对立柱结构进行应力、挠度数值分析,使得多跨铰接梁力学模型的数值计算简单易行;对于超高层建筑,风荷载对立柱的结构设计有较大影响,应根据工程实际条件,按照等刚度原理进行立柱的设计。针对已有工程上出现的横梁扭转现象,对横梁及其连接件的偏心受力进行了研究,并且结合实例计算验证了玻璃板块的自重对横梁产生的偏心作用较大,在构件式玻璃幕墙设计过程中,应当对横梁及其连接件进行偏心受力校核。在幕墙工程设计中,通常只对通用楼层的单个构件进行有限元分析,忽视了不同位置幕墙受力情况以及构件之间相互作用对整体系统的影响。本文通过编制命令流的方法对玻璃幕墙整体系统进行了有限元分析,获得了整体系统的受力分布情况,与传统设计方法对比后可知:构件间的相互作用可以提高构件的承载力,并且支座位置不同对幕墙整体系统受力具有一定影响。因此,建议在幕墙设计时应当根据工程具体条件合理设置支座的位置。
[Abstract]:As a new type of building peripheral structure, glass curtain wall is widely used, especially because of its mature technology, the construction of component glass curtain wall is more and more. However, in many completed curtain wall projects, there are often unsafe phenomena such as glass fall, beam torsion and so on. Therefore, how to ensure the safety performance of curtain wall has become a special concern of curtain wall industry. In this paper, a series of research on the problems existing in the design of component glass curtain wall is carried out with an engineering example. The column in component glass curtain wall is the key component of supporting curtain wall. Whether its force calculation is correct or not only affects the safety and reliability of curtain wall, but also affects the main factor of curtain wall construction investment. In this paper, combined with the design results of practical engineering, through theoretical analysis and comparison, it is concluded that the mechanical model of multi-span bonded beam is in good agreement with the actual load of column, and the finite element method is used to analyze the stress and deflection of column structure. The numerical calculation of the mechanical model of multi-span bonded beams is simple and feasible. For super high-rise buildings, wind load has a great influence on the structural design of columns. According to the actual engineering conditions, the design of columns should be carried out according to the principle of equal stiffness. In view of the torsional phenomenon of the beam in the existing engineering, the eccentric force of the beam and its connectors is studied, and the eccentric effect of the weight of the glass plate on the beam is verified by an example. In the design process of component glass curtain wall, the eccentric force of crossbeam and its connectors should be checked. In the curtain wall engineering design, the finite element analysis of only a single component of the general floor is usually carried out, neglecting the stress of the curtain wall at different positions and the influence of the interaction between the components on the whole system. In this paper, the finite element analysis of the whole system of glass curtain wall is carried out by means of compiling command flow, and the force distribution of the whole system is obtained. compared with the traditional design method, it can be seen that the interaction between components can improve the bearing capacity of members. And the different position of the support has a certain influence on the force of the whole curtain wall system. Therefore, it is suggested that the position of support should be set reasonably according to the specific conditions of the project in the design of curtain wall.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU227;TU318

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