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作者:

Qin, Huailei (Qin, Huailei.) | Bi, Kaiming (Bi, Kaiming.) | Dong, Huihui (Dong, Huihui.) | Han, Qiang (Han, Qiang.) (学者:韩强) | Du, Xiuli (Du, Xiuli.)

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摘要:

Excessive residual displacements to the bridge structures were repeatedly observed after many previous major earthquakes, which may make the bridge structure lose its functionality and may have to be demolished and rebuilt. Reducing the residual deformation of bridge structures after a severe earthquake is a key research direction in earthquake engineering. Applying self-centering energy dissipation (SCED) braces to dissipate seismic energy and reduce the residual displacement is considered a good solution. Some research works have been carried out to investigate the seismic performance of double-column bridge piers equipped with SCED braces. However, these studies focused on the quasi-static behavior of the bridge piers only, and no previous study investigated their real dynamic response. This study investigates the seismic performance of reinforced concrete (RC) double-column bridge piers with SCED braces through shake table tests. Three 1/5 scaled bridge piers were designed, fabricated, and tested. In particular, the SCED brace was first designed based on the quasi-static performance of the bridge pier. The designed brace was then installed onto the bridge pier, and shake table tests were performed to explore the dynamic response of the bridge pier. For comparison, a bare bridge pier without a brace was also tested. The experimental results showed that the SCED brace could effectively protect the bridge pier from damage and minimize residual displacement.

关键词:

Dynamic response Reinforced concrete (RC) double-column bridge piers Residual displacement Self-centering energy dissipation (SCED) brace Shake table test

作者机构:

  • [ 1 ] [Qin, Huailei]Beijing Univ Technol, Key Lab Urban Secur, Disaster Engn Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Dong, Huihui]Beijing Univ Technol, Key Lab Urban Secur, Disaster Engn Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Han, Qiang]Beijing Univ Technol, Key Lab Urban Secur, Disaster Engn Minist Educ, Beijing 100124, Peoples R China
  • [ 4 ] [Du, Xiuli]Beijing Univ Technol, Key Lab Urban Secur, Disaster Engn Minist Educ, Beijing 100124, Peoples R China
  • [ 5 ] [Bi, Kaiming]Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong 999077, Peoples R China

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来源 :

JOURNAL OF BRIDGE ENGINEERING

ISSN: 1084-0702

年份: 2023

期: 8

卷: 28

3 . 6 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:19

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