NDLI: Inelastic Seismic Response of Building with Friction Damper

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Inelastic Seismic Response of Building with Friction Damper

Content Provider	Springer Nature Link
Author	Patro, Sanjaya K. Banerjee, Susanta
Copyright Year	2016
Abstract	Dampers are used to control response of structure in recent years. Seismic response is reduced by adding energy dissipation capacity to the building. Dampers are provided to dissipate energy to reduce the damages on buildings. Relative displacement of two floors are opposed by damper elements. Dampers dissipate energy with no or little degradation in strength and stiffness. This work presents the response of structure with energy dissipation device i.e. friction damper built on soft soil when the structure is subjected to a ground motion. Parameters that influence strength and stiffness of structure and energy dissipating device are studied. Response of structure with energy dissipating device is analyzed and it is shown that building with damper shows better performance during earthquake. Building structures are designed using results from elastic analysis, though inelastic behavior well observed during the earthquake. Actual response of the structure can be estimated in the inelastic range by using nonlinear structural analysis programs. Inelastic Damage indices of structural component, overall building are computed by formulating Modified Park and Ang model. Nonlinear analysis program IDARC 2D is used for modeling and analysis. Modeling of friction damper is done using a Wen–Bouc model without stiffness and strength or strength degradation. These devices are modeled with an axial diagonal element. Pseudo force approach is introduced to consider the forces in damper elements, that is, forces in damper elements are subtracted from external load vector. Smooth hysteretic model is used to model response of friction dampers. Nonlinear dynamic analysis is carried out using Newmark-Beta integration method and the pseudo-force method. Damaged state of structure is obtained to observe whether elements are cracked, yielded or failed during analysis. Response parameters such as lateral floor displacement, storey drift, base shear are also computed.
Starting Page	395
Ending Page	404
Page Count	10
File Format	PDF
ISSN	22502149
Journal	Journal of The Institution of Engineers (India): Series A
Volume Number	97
Issue Number	4
e-ISSN	22502157
Language	English
Publisher	Springer India
Publisher Date	2016-11-18
Publisher Place	New Delhi
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Lateral displacement Friction damper Damage indices Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Building and Construction Architecture Mechanical Engineering Agricultural and Biological Sciences Civil and Structural Engineering

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