Abstract

This paper aims to investigate the effects of steel-plate added damping and stiffness (ADAS) dampers, as a special kind of passive control device, on the seismic behavior of steel shear walls (SSWs). Various types of metallic dampers can be used to improve the seismic characteristics and hysteretic performance of the structures. However, ADAS dampers can increase ductility of the structures in addition to energy dissipating. This kind of damper is usually used for braced steel and concrete frames. In the present paper, ADAS dampers are added to a steel frame with steel shear wall and analyzed under cyclic loading. All of the investigations are carried out by using the finite element simulations in ABAQUS software which is verified by comparing with the experimental results. The results showed that by employing the added ADAS dampers in the frames with SSWs, it is possible to reduce the pinching phenomenon and enhance the damping capability of the structure which indicates their efficiency in system of steel shear walls under cyclic loadings. The obtained results showed that inserting the ADAS dampers into the frames equipped by SSWs can increase the equivalent viscos damping ratio from 3.317 to 4.08 (23%) and ductility from 6.55 to 9.92 (51.5%).

摘要

本文旨在研究钢板附加阻尼和刚度 (ADAS) 阻尼器作为一种特殊的被动控制装置对钢剪力墙 (SSW) 抗震性能的影响。可以使用各种类型的金属阻尼器来改善结构的抗震特性和滞后性能。然而，ADAS 阻尼器除了可以消能外，还可以增加结构的延展性。这种阻尼器通常用于支撑钢和混凝土框架。在本文中，将 ADAS 阻尼器添加到带有钢剪力墙的钢框架中，并在循环载荷下进行分析。所有的研究都是通过使用 ABAQUS 软件中的有限元模拟进行的，并通过与实验结果的比较来验证。结果表明，通过在带有 SSW 的框架中添加 ADAS 阻尼器，可以减少夹紧现象并提高结构的阻尼能力，这表明它们在循环荷载下的钢剪力墙系统中的效率。获得的结果表明，将 ADAS 阻尼器插入 SSW 配备的框架可以将等效粘性阻尼比从 3.317 提高到 4.08（23%），延展性从 6.55 提高到 9.92（51.5%）。