双钢板—交错栓钉—混凝土组合剪力墙抗震性能研究

发布时间：2018-07-03 21:37

本文选题：双钢板剪力墙 + 高层建筑　；参考：《中国地震局工程力学研究所》2014年硕士论文

【摘要】：近三十年来，我国经济高速增长，人口数量不断增加，城市化进程快速推进，复杂高层建筑大量在抗震设防区兴建，不少已成为城市的标志性建筑，剪力墙是高层及超高层建筑中的基本抗侧力构件，但传统的钢筋混凝土剪力墙变形能力小、延性较差，目前在很多情况下已难以满足工程要求。已有研究显示双钢板-混凝土组合剪力墙力学性能良好，但目前适用于高层民用建筑的双钢板-混凝土组合剪力墙的相关研究开展还较少。本文针对这一问题，主要的研究工作和成果如下： 1.本文总结吸收以往国内外的相关研究成果，提出了一种新型的双钢板-交错栓钉-混凝土组合剪力墙，由细观到宏观进行了三个层次的试验研究，依次为交错栓钉受力性能试验研究、钢板-栓钉-混凝土相互作用试验研究和新型组合剪力墙拟静力试验研究。 2.设计了12个交错栓钉抗拉试验件和12个抗剪试验件，研究了不同参数下的交错栓钉的抗拉和抗剪性能，揭示了交错栓钉的工作受力机理，同时为后续试验研究提供研究基础，为此种新型双钢板-交错栓钉-混凝土组合剪力墙提供设计依据。 3.进行了钢板-栓钉-混凝土相互作用试验，设计了6个组合墙轴压试验件，通过单向轴压试验及有限元分析揭示了新型双钢板-交错栓钉-混凝土组合剪力墙中各部件之间的受力机理及协调工作机制。研究结果表明墙体两侧钢板通过交错栓钉与混凝土之间的咬合作用可以保证与混凝土协调工作，一方面混凝土在轴压下受到双层钢板的约束，，使其轴向抗压强度和变形能力有较大的提高，另一方面混凝土也对钢板的面外变形起到约束作用，防止其面外屈曲。 4.进行了7个双钢板-交错栓钉-混凝土组合剪力墙和1个钢筋混凝土剪力墙的低周循环加载拟静力试验，研究了不同参数的组合剪力墙在竖向轴压和水平往复荷载下的力学性能和破坏模式，分析了组合剪力墙的承载能力、刚度退化特性、延性和变形能力以及耗能能力，并根据试验结果提出了组合墙的承载力计算公式，研究结果表明本文提出的新型双钢板-交错栓钉-混凝土组合剪力墙承载力高、延性好、耗能能力良好，且构造简单、施工方便，在高层建筑结构中具有应用价值。
[Abstract]:In the past three decades, the economy of our country has grown rapidly, the population has been increasing, the process of urbanization has been advancing rapidly, and a large number of complex high-rise buildings have been built in earthquake-resistant areas, many of which have become the iconic buildings of cities. Shear wall is a basic lateral force resistant member in high-rise and super high-rise buildings, but the traditional reinforced concrete shear wall has small deformation capacity and poor ductility, so it is difficult to meet the engineering requirements in many cases. Previous studies have shown that the mechanical properties of double-plate-concrete composite shear walls are good, but there are few researches on double-plate-concrete composite shear walls which are suitable for high-rise civil buildings at present. In this paper, the main research work and results are as follows: 1. In this paper, a new type of double steel plate, staggered bolt and concrete composite shear wall is put forward, which is composed of two steel plates, interlocking bolt and concrete, and three levels of experimental research are carried out from microscopic to macroscopic. The following are in turn: the experimental study on the mechanical behavior of staggered bolt, the experimental study on the interaction between steel plate, bolt and concrete, and the pseudostatic test of a new type of composite shear wall. 2. Twelve tensile test pieces and 12 shear test pieces were designed. The tensile and shear properties of interlaced bolt under different parameters were studied, the working mechanism of interlaced bolt was revealed, and the research foundation was provided for further test research. Therefore, the design basis of a new type of double steel plate-staggered bolt-concrete composite shear wall is provided. The experiment on the interaction between steel plate, bolt and concrete was carried out, and six composite wall axial compression test pieces were designed. Through unidirectional axial compression test and finite element analysis, the stress mechanism and coordination mechanism among the components in a new type of double steel plate, staggered bolt and concrete composite shear wall are revealed. The results show that the occlusal action of the steel plates on both sides of the wall can be ensured to work in harmony with the concrete through the interlaced bolt. On the one hand, the concrete is restrained by the double-layer steel plate under axial compression. The axial compressive strength and deformation ability of the steel plate are greatly improved. On the other hand, concrete also acts as a constraint on the out-of-plane deformation of the steel plate and prevents its out-of-plane buckling. 4. In this paper, the pseudostatic tests of 7 double steel plate staggered bolt concrete composite shear walls and 1 reinforced concrete shear wall under low cycle cyclic loading are carried out. The mechanical properties and failure modes of composite shear walls with different parameters under vertical axial and horizontal reciprocating loads are studied. The load-carrying capacity, stiffness degradation, ductility, deformation capacity and energy dissipation capacity of composite shear walls are analyzed. Based on the experimental results, a formula for calculating the bearing capacity of composite wall is proposed. The research results show that the new type of composite shear wall proposed in this paper has high bearing capacity, good ductility, good energy dissipation capacity and simple structure. It is easy to construct and has application value in high-rise building structure.
【学位授予单位】：中国地震局工程力学研究所
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU398.9

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