预制复合墙板抗震性能研究

发布时间：2018-10-12 11:00

【摘要】：与现浇结构建筑相比,装配式建筑具有生产效率高、环境友好等优势,近年来得到较快发展,其优点毋庸置疑。目前制约装配式建筑发展的关键因素是围护体系,尤其是外墙板,因此对预制复合墙板做进一步的研究具有重要意义。本文主要研究一种新型三明治复合墙板的抗震性能以及极限承载力,本文所研究的墙板为陶粒混凝土钢丝桁架夹芯复合墙板,夹芯层为聚苯板,该墙板通过下托上拉式的柔性连接节点与钢框架相连接。通过外挂墙板钢框架的足尺模型的振动台试验,研究该新型节能复合墙板在地震作用下的抗震性能,以及该墙板在各级地震烈度地震波作用下的破坏过程和破坏特点,此外,探究在地震波作用下,复合墙板的加速度响应分布规律、位移响应分布规律等。最后给出这种新型复合墙板的极限抗弯承载力的计算方法。在振动台试验过程中,墙板基本保持完好,没有出现结构性破坏,充分说明墙板具有优异的抗震性能,完全满足抗震需要,可以应用于实际工程中。试验结果表明:墙板的加速度响应分布规律为,墙板上部的加速度最大,中部的加速度次之,下部的加速度最小;墙板的加速度随结构高度的变化规律为,三层墙板的加速度最大,二层墙板的加速度次之,一层墙板的加速度最小,也就是说墙板的加速度随结构高度的增加而增加;另外,对于墙板的挠度,二层墙板的挠度最大,三层墙板的挠度次之,一层墙板的挠度最小。本文给出了该复合墙板抗弯极限承载力的计算方法,对计算模型采取了合理的简化措施,该简化模型与真实的墙板在受力机理上是一致的,是比较合理的计算模型。通过试验对比,用得到的抗弯极限承载力试验值与用该计算方法得出的理论计算值进行对比可知,该计算方法是合理的、有效的。
[Abstract]:Compared with cast-in-place structure building, prefabricated building has many advantages, such as high production efficiency and environmental friendliness, which has been developed rapidly in recent years, and its advantages are beyond doubt. At present, the key factor that restricts the development of prefabricated buildings is the enclosure system, especially the outer wall panels, so it is of great significance to further study the prefabricated composite wall panels. This paper mainly studies the seismic performance and ultimate bearing capacity of a new sandwich composite wall board. The wall board studied in this paper is ceramsite concrete steel wire truss sandwich composite wall board, and the sandwich layer is polystyrene plate. The wall board is connected with the steel frame by the flexible connection joint of the lower bracket and the pull type. Based on the shaking table test of the full-scale model of the steel frame with external wall panel, the seismic behavior of the new energy-saving composite wall board under earthquake action, the failure process and failure characteristics of the wall board under the action of seismic waves of various earthquake intensity are studied, in addition, the failure characteristics of the new type of energy saving composite wall board under the action of seismic waves at all levels are studied. The distribution law of acceleration response and displacement response of composite wall plate under seismic wave is studied. Finally, the calculation method of ultimate flexural bearing capacity of the new composite wallboard is given. In the process of shaking table test, the wall panel is basically intact and no structural damage appears, which fully shows that the wall board has excellent seismic performance and can be applied to practical engineering. The experimental results show that the acceleration response of the wall panel is the largest in the upper part, the second in the middle part, and the smallest in the lower part, and the acceleration of the wall panel varies with the height of the structure. The acceleration of the third floor wallboard is the largest, the second layer is the second, and the acceleration of the first layer is the least. That is to say, the acceleration of the wall board increases with the increase of the height of the structure. In addition, for the deflection of the wall board, the second floor wall board has the largest deflection. The deflection of the three-story wall board is the second, and the deflection of the first layer is the smallest. In this paper, the calculation method of the ultimate bearing capacity of the composite wall plate is given, and reasonable simplified measures are taken for the calculation model. The simplified model is consistent with the actual wall plate in the mechanism of the force, and is a more reasonable calculation model. Through the comparison of the experimental results and the theoretical calculated values obtained by the method, it can be seen that the calculation method is reasonable and effective.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU352.11

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