Civil and Project journal

Investigation the Effect of Using Steel Slit Dampers in Different Heights on the Behavior of Buildings

Volume 2, Issue 8 - Serial Number 18
November 2020
Pages 38-54
Civil and Project journal

Document Type : Research Article

Authors

Vahid Saberi 1
Hamid Saberi 2
Faezeh Eslami 3
Abbasali Sadeghi 4

1 Department of Civil Engineering, Engineering Faculty, Eyvanakey University, Semnan, Iran

2 Department of Civil Engineering, Engineering Faculty,University of Eyvanekey, Semnan, Iran

3 Department of architecture، Mashhad Branch،Islamic Azad University ،Mashhad،Iran

4 Department of Civil Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran

Abstract
In this study, the effect of steel damper with vertical slits on chevron braced frames with the number of different stories is investigated and pushover and cyclic analyses are performed . To evaluate and compare the results, a parametric study is carried out on a steel damper with and without slit. Eight model frames such as a single-story in ordinary moment frame, braced frame, chevron braced frame with gusset plate, chevron braced frame equipped by a damper with vertical slits, chevron braced frame with silt damper and three-story chevron braced frame equipped by a damper with vertical slits, five-story chevron braced frame equipped by a damper with vertical slits, eight-story chevron braced frame equipped by damper with vertical slits are modeled and analyzed by finite element method in Abaqus software. The results showed that the braced frame equipped by a damper with vertical slits by its ductile behavior, dissipated a large amount of earthquake input energy and reduced the base shear. The hysteresis curves were stable and without any loss, indicating high energy absorption by chevron braced frame equipped by a damper with vertical slits. In all the chevron braced frame equipped by a damper with vertical slits, the plastic hinges are not formed in the members of structures, and the failure mechanism is concentrated in the damper. The damper with vertical slits reduced the elastic stiffness, secondary stiffness and carrying capacity, which in addition to controlling the drift of the structure, increased the energy absorption capability. The chevron braced frame equipped by a damper with vertical slits had more ductility than other specimens, and according to the results, damper with vertical slits had good seismic performance.

Keywords

Chevron Braced Frame
Slit Damper
Hysteresis Curve
Ductility
Plastic Hinge
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ؽکل 31 ومًدار مقایغٍای وغثت ؽکلپذیزی
www.cpjournals.com ISSN:6262-155X )Civil & Project Journal)CPJ(( پروژه و عمران نشریه
ؾاَ زْٚ، زٚضٜ 2 ،قٕاضٜ 8 ،آتاٖ 1399،قٕاضٜ پیاپی 18صفحٝ 38 تا صفحٝ 54
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  • Receive Date 18 October 2020
  • Accept Date 17 November 2020
  • First Publish Date 17 November 2020
  • Publish Date 22 October 2020

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