Optimal design and cost-effectiveness evaluation of MR damper system for cable-stayed bridges based on LCC concept

D. Hahm, H. M. Koh, W. Park, S. Y. Ok, K. S. Park

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

Abstract

A method is presented for evaluating the economic efficiency of a semi-active magneto-rheological (MR) damper system for cable-stayed bridges under earthquake loadings. An optimal MR damper capacity maximizing the cost-effectiveness is estimated for various seismic characteristics of ground motion. The economic efficiency of MR damper system is addressed by introducing the life-cycle cost concept. To evaluate the expected damage cost, the probability of failure is estimated. The cost-effectiveness index is defined as the ratio of the sums of the expected damage costs and each device cost between a bridge structure with the MR damper system and a bridge structure with elastic bearings. In the evaluation of cost-effectiveness, the scale of damage cost is adopted as parametric variables. The results of the evaluation show that the MR damper system is highly cost-effective especially for the ground motion of moderate seismicity.

Original languageEnglish
Title of host publicationLife-Cycle Cost and Performance of Civil Infrastructure Systems - Proceedings of the 5th International Workshop on Life-Cycle Cost Analysis and Design of Civil Infrastructure Systems
Pages157-164
Number of pages8
StatePublished - 2007
Event5th IABMAS Workshop on Life-Cycle Cost Analysis and Design of Civil Infrastructure Systems, LCC05 - Seoul, Korea, Republic of
Duration: 16 Oct 200618 Oct 2006

Publication series

NameLife-Cycle Cost and Performance of Civil Infrastructure Systems - Proceedings of the 5th International Workshop on Life-Cycle Cost Analysis and Design of Civil Infrastructure Systems

Conference

Conference5th IABMAS Workshop on Life-Cycle Cost Analysis and Design of Civil Infrastructure Systems, LCC05
Country/TerritoryKorea, Republic of
CitySeoul
Period16/10/0618/10/06

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