装配式钢板剪力墙与钢框架连接构造的开发及性能研究

发布时间：2018-02-28 08:30

本文关键词： 钢框架钢板剪力墙抗剪连接件试验研究抗震性能　出处：《沈阳建筑大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着钢结构住宅在我国的应用愈加广泛,特别是高层钢结构住宅遍地开花,装配式钢板剪力墙结构作为一种具有良好抗侧力性能的结构体系,越来越多的应用于钢结构住宅体系之中,而装配式钢板剪力墙与钢框架的连接构造形式成为工程应用中的一大难题。传统的连接构造如螺栓连接(由于其制孔精度要求极高、破坏噪音大等)、单鱼尾板连接件连接(钢板剪力墙易发生平面外失稳等)而难以满足工程应用的要求,因此开发出一种新型的装配式钢板剪力墙与钢框架梁的连接构造形式显得尤为迫切。本文总结了国内外钢板剪力墙的研究现状,深入分析了装配式钢板剪力墙与钢框架的现有连接构造的优缺点,基于现有连接构造的缺点,提出一种装配式钢板剪力墙与钢框架梁的新型连接构造形式,即双鱼尾板连接件。本文以试验研究为基础,开展了单调加载试验与低周往复荷载加载试验,以了解新型抗剪连接件的力学性能和破坏机理,建立合理适用的设计方法。本文开展的主要研究内容如下：本试验共设计制作了8个试件,进行了单调与低周往复加载试验,为保证试验数据的准确性与合理性,相同连接构造的试件数量均为2个。通过试验研究了新型抗剪连接件的破坏模式,承载力,滞回性能,刚度,延性,耗能性能以及新型抗剪连接件对钢板剪力墙的约束作用等。从单调荷载作用下试件的荷载-位移曲线可以看出,试件的弹性阶段、弹塑性阶段、破坏阶段界限明显,同时新型双鱼尾板连接件的屈服承载力高于单鱼尾板连接件屈服承载力约为10.9%,说明新型双鱼尾板连接件传力分布更加均匀,受力方式更加合理,力学性能优于单鱼尾板连接件。低周往复荷载作用下新型双鱼尾板连接件的极限承载力相对普通单鱼尾板连接件承载力增长了15.67%,而普通单鱼尾板连接件的刚度退化更加明显,新型双鱼尾板连接件连接的钢板剪力墙的平面外变形相对较小,这也反应出在试件破坏前,新型双鱼尾板连接件的连接方式对钢板剪力墙的约束作用较强,双鱼尾板连接件与钢板剪力墙的协同工作性能较好,延缓了钢板剪力墙的平面外失稳破坏。新型双鱼尾板连接试件的延性系数、耗能系数、等效粘滞阻尼系数均优于单鱼尾板连接件,并且它的滞回环曲线比较饱满,说明新型双鱼尾板连接件耗能能力较好,延性较好,结构具有良好的抗震性能。最后,对比新型连接件与现有鱼尾板连接件的试验结果,给出此新型连接件应用于工程实际的合理性建议。
[Abstract]:With the widespread application of steel structure house in our country, especially the high-rise steel structure housing, the prefabricated steel plate shear wall structure is regarded as a kind of structure system with good lateral force resistance. More and more of them are used in steel structure residential system, and the connection form of steel plate shear wall and steel frame becomes a difficult problem in engineering application. It is difficult to meet the requirements of engineering application due to the failure of noise and the connection of single fish-plate connectors (such as steel plate shear wall is prone to instability outside the plane), which is difficult to meet the requirements of engineering application. Therefore, it is urgent to develop a new type of connection between steel plate shear wall and steel frame beam. This paper summarizes the research status of steel plate shear wall at home and abroad. The advantages and disadvantages of the existing connection structure between the steel plate shear wall and the steel frame are analyzed in depth. Based on the shortcomings of the existing connection structure, a new type of connection structure between the fabricated steel plate shear wall and the steel frame beam is proposed. In this paper, monotone loading test and low cycle reciprocating load test are carried out to understand the mechanical properties and failure mechanism of the new shear joint. The main research contents of this paper are as follows: in order to ensure the accuracy and rationality of the test data, 8 specimens were designed and made, and the monotone and low cycle reciprocating loading tests were carried out. The number of specimens with the same connection structure is 2. The failure mode, bearing capacity, hysteretic performance, stiffness, ductility of the new shear joint are studied by experiments. From the load-displacement curve of the specimen under monotone load, it can be seen that the boundary of elastic, elastic-plastic and failure stages of the specimen is obvious. At the same time, the yield bearing capacity of the new joint is about 10.9, which indicates that the force distribution of the new joint is more uniform, and the stress mode is more reasonable. Under low cycle reciprocating load, the ultimate bearing capacity of the new type of double fish-plate connectors increases 15.67% compared with that of the ordinary single fish-plate connectors, but the stiffness degradation of the ordinary single-fish-plate connections is more obvious. The out-of-plane deformation of the steel plate shear wall connected by the new type of double fish-plate connector is relatively small, which also shows that the connection mode of the new type of double-fish-plate connection has a stronger constraint on the steel plate shear wall before the specimen is destroyed. The cooperative performance of double fish-plate joint and steel plate shear wall is better, and the out-of-plane instability failure of steel plate shear wall is delayed. The equivalent viscous damping coefficient is better than the single fish-plate connector, and its hysteretic loop curve is full, which indicates that the new type double-fish-plate connector has better energy dissipation ability, better ductility and better seismic performance. By comparing the test results between the new joint and the existing fish-plate connector, the rational suggestions for the application of the new connector in engineering practice are given.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU391

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