Seismic Control of Continuous Bridges Using Variable Radius Friction Pendulum Systems and Viscous Fluid Dampers

Krishnamoorthy, Agrahara (2015) Seismic Control of Continuous Bridges Using Variable Radius Friction Pendulum Systems and Viscous Fluid Dampers. International Journal of Acoustics and Vibration, 20 (1). pp. 24-35.

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Abstract

This paper investigates the performance of a variable radius friction pendulum system (VRFPS) with supplementary damping using viscous fluid dampers (VFD) to control the seismic response of bridges. A VRFPS is similar to a frictional pendulum system (FPS), but the curvature of the sliding surface is varied, and it becomes the function of the sliding displacement. The bridge is seismically isolated with a VRFPS between the superstructure and the pier, and a VFD is added between the abutment and superstructure. Effectiveness of the proposed system is studied for a three-span continuous bridge isolated with a VRFPS and VFD hybrid system. The performance of a proposed system is compared to a corresponding performance of a hybrid system consisting of a conventional FPS with a VFD. The results of the numerical simulation showed that supplementary damping reduces the seismic response of the isolated bridge. Further, a hybrid system consisting of a VRFPS and a VFD is found to be more effective than a FPS and a VFD hybrid system for seismic control of bridges

Item Type: Article
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 25 Oct 2016 10:16
Last Modified: 25 Oct 2016 10:16
URI: http://eprints.manipal.edu/id/eprint/147400

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