新型耗能连梁抗震性能研究
发布时间：2019-03-18 18:19
【摘要】：随着经济的快速发展,城市空间日趋紧张,城市高层建筑日益增多。钢筋混凝土剪力墙结构作为高层建筑的主要形式也得到了广泛使用。剪力墙结构中的连梁联系各片墙肢,是为剪力墙提供刚度和耗散能量的重要构件。然而,钢筋混凝土连梁滞回性能及耗能能力不强。地震中,钢筋混凝土连梁会出现损伤,震后修复困难。本文提出了一种耗能能力强、性能稳定、震后可修复、施工方便的耗能连梁。本文的主要研究内容及成果如下:通过有限元模拟并对多种开洞形式的阻尼器性能进行比较后提出了两种耗能连梁阻尼器(Ⅰ型、Ⅱ型阻尼器)。分别研究了Ⅰ型、Ⅱ型阻尼器的滞回性能、刚度,得出了Ⅰ型、Ⅱ型阻尼器的骨架曲线,并对这两种阻尼器的本构关系进行了简化。研究了普通钢筋混凝土连梁及截断式耗能连梁刚度。分别给出了普通钢筋混凝土连梁和截断式耗能连梁刚度计算公式。依据等刚度思路,提出了截断式耗能连梁等刚度替换设计方法。使用Perform-3D建立一片联肢墙模型。分别对使用普通钢筋混凝土连梁的墙肢及安装了耗能连梁的墙肢进行时程分析,各地震波作用下结构最大层间位移角均一定程度减小。随后研究了耗能连梁屈服力对阻尼器的影响。分析结果表明,随着阻尼器屈服力的减小,耗能连梁耗能比增加,墙肢最大层间位移角以及墙肢基底剪力呈现下降趋势。
[Abstract]:With the rapid development of economy, urban space is increasingly tense, and urban high-rise buildings are increasing day by day. Reinforced concrete shear wall structure is also widely used as the main form of high-rise building. Connecting beam in shear wall structure is an important component to provide stiffness and energy dissipation for shear wall. However, the hysteretic behavior and energy dissipation capacity of reinforced concrete connecting beams are not strong. During the earthquake, reinforced concrete beams will be damaged, and it is difficult to repair them after the earthquake. In this paper, a kind of energy dissipation connecting beam with strong energy dissipation ability, stable performance, repairable after earthquake and convenient construction is proposed. The main contents and achievements of this paper are as follows: two kinds of energy dissipation connected beam dampers (type I and type 鈪，
本文编号：2443108
[Abstract]:With the rapid development of economy, urban space is increasingly tense, and urban high-rise buildings are increasing day by day. Reinforced concrete shear wall structure is also widely used as the main form of high-rise building. Connecting beam in shear wall structure is an important component to provide stiffness and energy dissipation for shear wall. However, the hysteretic behavior and energy dissipation capacity of reinforced concrete connecting beams are not strong. During the earthquake, reinforced concrete beams will be damaged, and it is difficult to repair them after the earthquake. In this paper, a kind of energy dissipation connecting beam with strong energy dissipation ability, stable performance, repairable after earthquake and convenient construction is proposed. The main contents and achievements of this paper are as follows: two kinds of energy dissipation connected beam dampers (type I and type 鈪，
本文编号：2443108
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