Optimum passive control of irregular isolated bridges considering rocking isolation

Wen Hsiao Hung, Tzu Ying Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Rocking responses of spread foundations may occur during extreme earthquakes. Rocking responses result in the isolation effect on the bridges. When a bridge is designed using isolators and spread foundations, double isolation effects may further decrease the seismic-induced forces under extreme earthquakes. However, the deck displacement becomes excessively large when subjected to a near-field ground motion. Thus, passive viscous dampers are applied to the bridge for decreasing the displacement responses in this study. Compared with typical isolated bridges, the irregular isolated bridge has different stiffness at each column and abutment. The particle swarm optimization-simulated annealing (PSO-SA) hybrid searching algorithm is employed to find the optimum damping coefficients and the locations of viscous dampers.

Original languageEnglish
Title of host publication11th National Conference on Earthquake Engineering 2018, NCEE 2018
Subtitle of host publicationIntegrating Science, Engineering, and Policy
PublisherEarthquake Engineering Research Institute
Pages5755-5759
Number of pages5
ISBN (Electronic)9781510873254
StatePublished - 2018
Event11th National Conference on Earthquake Engineering 2018: Integrating Science, Engineering, and Policy, NCEE 2018 - Los Angeles, United States
Duration: 25 Jun 201829 Jun 2018

Publication series

Name11th National Conference on Earthquake Engineering 2018, NCEE 2018: Integrating Science, Engineering, and Policy
Volume9

Conference

Conference11th National Conference on Earthquake Engineering 2018: Integrating Science, Engineering, and Policy, NCEE 2018
Country/TerritoryUnited States
CityLos Angeles
Period25/06/1829/06/18

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