Steel jacket repairing of reinforced concrete bridge columns under nearfault ground motion

K. Y. Liu, W. Witarto, K. C. Chang, Y. C. Sung

研究成果: Conference contribution

摘要

This paper presents a seismic repairing of reinforcement concrete bridge column using steel jacketing. An OpenSees-based simulation model of bridge column, considering inelastic flexure, bond slip, and buckling behavior, was first proposed and verified by 9 cyclical loading tests. It is found that the maximum drift ratio approaches to 6% according to 6 case studies. Therefore, an experimental program was conducted in order to understand the repairing efficiency from 3 cyclical loading tests. Specimen BMRC1 represented the benchmark satisfying the code requirements for a new design bridge column, while NFRC1 was a duplicate of BMRC1, expect from the testing procedure adopted from FHWA recommendation to have a pulse-like loading protocol at drift ratio of 8%. NFRC1S, the repairing specimen of NFRC1, utilized 6 mm steel plate with additional chemical bolts. The experimental results showed NFRC1S can be survived at same drift ratio of 8% by providing saturated hysteresis behavior and enhanced shear strength up to 25%, in comparison with BMRC1 and NFRC1. It is expected to repair bridge column by steel jacketing directly without demolishing it though damaged due to near-fault ground motion.

原文English
主出版物標題Bridge Maintenance, Safety, Management and Life Extension - Proceedings of the 7th International Conference of Bridge Maintenance, Safety and Management, IABMAS 2014
發行者Taylor and Francis - Balkema
頁面1126-1133
頁數8
ISBN(列印)9781138001039
DOIs
出版狀態Published - 2014
事件7th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2014 - Shanghai, China
持續時間: 2014 七月 72014 七月 11

出版系列

名字Bridge Maintenance, Safety, Management and Life Extension - Proceedings of the 7th International Conference of Bridge Maintenance, Safety and Management, IABMAS 2014

Other

Other7th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2014
國家/地區China
城市Shanghai
期間14-07-0714-07-11

All Science Journal Classification (ASJC) codes

  • 土木與結構工程
  • 安全、風險、可靠性和品質

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