Abstract
Since the appearance of the first modern multistories buildings, besides the demand of ensuring the bearing capacity, one of the urgent problems facing the engineer is to do how to design structure to ensure the requirements of normal use such as displacement, motion acceleration within permissible limits. There exist many methods to reduce these response of structure under lateral load. Among these, using fluid viscous damper (FVD) is one of the most applied equipment because of its simplicity. This paper presents the examination of eight-story steel frame structure subjected to seismic load. The FVD system is defined in Etabs with link properties. In each story, four dampers are located in each direction of plan, with two on each side of the center of stiffness of the story. The time history analysis was conducted to study the structure subjected to seimic load collected from the function library of program Etabs. The effect of FVD system was determined by the dynamic response of the building and displacement indexes such as maximum displacement of roof, story drift ratio. The results show that, all the dynamic response characters of structure were decreased significantly when providing the FVD to it.
Highlights
In the modern life, with the strength of economy, science, technology, especially civil engineering science, there is pressing problem arises in large urban areas
To understand the effectives of fluid viscous damper (FVD) system (Fig. 3), authors examined the eight-story steel frame structure subjected to seismic load
It can be explained that the FVD system does not affect to the stiffness of the structure
Summary
With the strength of economy, science, technology, especially civil engineering science, there is pressing problem arises in large urban areas One of the more practical and effective method is using the damping equipment in the structure to increase the damping ratio up to 30 percentage [11]. In the monograph [2], Alberto Lago et al listed all the applications, which are being developed to solve the energy absorption problem They are active, passive, semiactive and hybrid control. Among the passive systems [2] (see Fig. 1), the fluid viscous dampers (FVD) – passive control system are one of the most applied equipment because of its simplicity
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