阻尼填充墙高性能砂浆阻尼层性能试验研究与理论研究

发布时间：2018-03-22 18:06

本文选题：高阻尼填充墙　切入点：高阻尼砂浆　出处：《湖南大学》2015年硕士论文　论文类型：学位论文

【摘要】：框架填充墙结构是建筑中采用较多的一种结构体系。研究调查表明,虽然在抗震设计中填充墙为非承重构件,但其自身的抗震性能及其对主体结构承载力、刚度及其变形性能的影响却不容忽视,因此忽略填充墙对框架结构的影响并不总安全。汶川地震中框架结构的填充墙发生明显的破坏,非结构性构件的地震安全性引起了更多学者的重视。本文在阻尼填充墙框架的基础上,对阻尼层所采用的材料和构造形式进行创新,得到了一种新型的高阻尼填充墙框架。主要研究内容有:(1)设计了一种以高阻尼砂浆为阻尼层的阻尼单元构造方案。高阻尼砂浆阻尼层性能研究试验通过分别掺加不同比例的苯丙乳液(A)、丁苯乳液(B)来配制阻尼层,并对其进行拟静力试验,对比研究了高性能砂浆阻尼层试件的滞回耗能、变形能力、刚度特性。试验结果表明:阻尼填充墙高性能砂浆阻尼层具有较好的耗能能力和水平剪切变形能力。高性能砂浆阻尼层随着聚合物掺量的增加,砂浆层变形能力和阻尼性能得到提高,耗能增多,试件的滞回曲线饱满,但强度有所降低。采用高性能砂浆作阻尼层的阻尼填充墙是一种新型合理的方案。(2)采用了对高阻尼砂浆阻尼层性能试验研究的成果,设计了一榀单层单跨的新型高阻尼填充墙框架试件,并改进了阻尼层的构造方式,采用上下错缝的形式,进行了低周往复试验研究。试验结果表明:上下错缝形式的阻尼层可以增加其变形能力,同时高阻尼砂浆与砌体单元之间的粘结性能更好。在外荷载作用下,高阻尼填充墙框架的滞回曲线更为饱满,耗能能力更强。(3)本文采用了大型通用有限元分析软件ABAQUS对新型高阻尼填充墙框架进行了数值模拟和参数分析,结果表明:模拟滞回曲线和骨架曲线与试验值吻合良好;随阻尼层厚度的增加,高阻尼填充墙框架的承载力和延性都得到提高,滞回曲线逐渐饱满,但改善能力有限;随着轴W'比的增大,高阻尼填充墙框架的承载力明显提高,但相应的延性下降也较快。
[Abstract]:Infilled wall frame structure is used more and more in the building. Research shows that, although in the seismic design of the wall is filled with non bearing elements, but the seismic performance of its own and the main structure bearing capacity, stiffness and deformation properties of impact can not be ignored, thus ignoring the effect of infilled walls on frame structure is not always safe. The infilled frame structure in Wenchuan earthquake occurred obvious damage, seismic safety of non structural components has attracted more and more attention. Based on the damping of infilled frame, innovative materials and structural forms for the recovery of the damping layer, we obtain a new high damping filling wall frame. The main contents are: (1) the design of a high damping mortar layer damping scheme damping unit structure. Through the research on the properties of high damping layer mortar with different damping tests respectively. Emulsion ratio (A), styrene butadiene latex (B) for the preparation of damping layer, and the pseudo static test, comparative study of high performance mortar layer damping hysteretic energy dissipation, deformation capacity, stiffness characteristics. The experimental results show that the damping wall filled with high performance mortar layer has a damping energy dissipation capacity and the horizontal shear good deformation ability. High performance mortar damping layer increased with the amount of the polymer mortar layer, deformation capacity and damping properties were improved, energy consumption increased, the hysteretic curve is full, but the intensity decreased. The high performance mortar layer damping damping wall is a new type of reasonable scheme. (2) the experimental study on high performance mortar layer damping damping results, high damping of a single span design of infilled frame specimens, and improved the structure of the damping layer, the lower dislocation in the form of Experimental study on the low cycle reciprocating. The experimental results show that the joint damping layer forms on the wrong can increase the deformation capacity, and high damping between mortar and masonry units better adhesion property. Under load, high damping filled wall frame hysteretic curve is more full of energy dissipation ability. (3) in this paper by using the large-scale finite element analysis software ABAQUS on the new high damping infilled frame were analyzed, and the parameters of numerical simulation results show that the simulated hysteretic curves and skeleton curves agree well with the experimental data; with the increase of thickness of the damping layer, high damping filled wall frame structure of the bearing capacity and ductility are improved, hysteretic curve gradually full, but the improvement ability is limited; with the increase of the ratio of the W'axis, the high damping capacity of filling wall frame is improved obviously, but the corresponding ductility decreases quickly.

【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU398;TU352.11

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