Seismic Control of Highway Bridges using Fuzzy Logic Control
Journal Title: GRD Journal for Engineering - Year 2019, Vol 4, Issue 0
Abstract
Investigation of past years shows seismic pounding between successive bridge segment which is usually only of a few centimeters resulting significant structural damage. The aim of this paper is to investigate the possibility of using semi-active control systems such as magnetorheological (MR) damper to reduce the impact between the adjacent segments of the highway bridges in severe seismic event. In this study, a highway bridge with five segments is evaluated numerically for semi-active control system by installing MR dampers in between adjacent girders. Fuzzy logic control strategy is used as control algorithm to command MR damper. The structural response parameters such as displacement, acceleration and pounding force are evaluated for controlled and uncontrolled bridge using MATLAB (SIMULINK) under earthquake excitations. The results show that semi-active control strategy using fuzzy logic controller reduces the acceleration response and pounding force of adjacent bridge deck in a highway bridge.
Authors and Affiliations
Umang N. Patel, Devesh P. Soni
Keywords
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