COMPARISON OF THE SEISMIC BEHAVIOUR OF 1-STORY AND 8-STORY UNSTIFFENED STEEL PLATE SHEAR WALLS

Publish Year: 1398
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

SEE08_207

تاریخ نمایه سازی: 27 خرداد 1399

Abstract:

In the recent decades, many analytical and experimental research works have been conducted on the steel plate shear wall (SPSW) as one of the main lateral resisting systems in buildings. The main characteristics of such a system are its high elastic stiffness, large deformability, and stable hysteretic behaviour. SPSWs are used in two major ways of with and without stiffener. In the recent years, the type of without stiffener has been used more in practice because of its low cost and simple details.The design method of this system is based on pure shear ignoring the effects of bending moments due to ground motion on its seismic performance. So, it is important how does such a system perform when its height is increased In order to investigate this fact, two finite element models using ANSYS was generated and analysed for the effect of the height and its overall performance on the building characteristics. Modelled structures, with same plan and different heights were 1 and 8-story, having steel plate shear walls. The buildings are symmetric in plan and along the height. The SPSWs are designed based on the Canadian Code, Can/Csas 16-01. It is assumed that all of connections are fixed type. The results indicate that bending has a remarkable effect on the performance of system and plays a significant role in behavior of buildings when their heights are increased. So, the ratio of failure to design base shear, ductility of the building, and the initial stiffness are reduced by increasing the height of building. In fact, the failure trend moves from the ductile toward brittle state.

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Authors

Ilgar Nikzad Khiavi

Senior Researcher, International Institute of Earthquake Engineering and Seismology, Tehran, Iran

Fariborz Nateghi Elahi

Professors, International Institute of Earthquake Engineering and Seismology, Tehran, Iran