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作者:

Lin, Siqi (Lin, Siqi.) | Zhao, Yan-Gang (Zhao, Yan-Gang.) | Li, Jianming (Li, Jianming.)

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EI Scopus SCIE

摘要:

Columns failed near the mid-zone were commonly found in practical engineering when subjected to an increasing compression load caused by the vertical ground motion during an earthquake, indicating that more confinement may be necessary at the mid-zone. Fiber-reinforced polymer (FRP) materials have been widely used to strengthen the columns. Different wrapping schemes, including full, partial, and nonuniform wrap, have been proposed. Generally, FRP-confined concrete stub columns using the existing wrapping schemes failed by the rupture of FRP at the middle zone, indicating the middle zone of the columns were not well confined by using the existing wrapping schemes. A new wrapping scheme with more FRP sheets applied in the middle zone is proposed. Experimental tests with a total of 28 specimens were conducted to evaluate the performance of different wrapping schemes, based on which an arrangement way that the applied FRP materials decrease from the middle zone to the end is recommended. The results suggest FRP materials along the height of a column can be more efficiently utilized by using the recommended wrapping scheme. Additionally, compared with the specimens using the existing wrapping schemes with the same amount of FRP materials, the recommended wrapping scheme significantly improves the strength and ductile behavior of columns.

关键词:

Axially loaded FRP-confined concrete Wrapping scheme Confinement effect

作者机构:

  • [ 1 ] [Lin, Siqi]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Zhao, Yan-Gang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Zhao, Yan-Gang]Kanagawa Univ, Dept Architecture & Bldg Engn, Yokohama, Kanagawa 2218686, Japan
  • [ 4 ] [Li, Jianming]Kanagawa Univ, Dept Architecture & Bldg Engn, Yokohama, Kanagawa 2218686, Japan

通讯作者信息:

  • [Zhao, Yan-Gang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

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来源 :

COMPOSITE STRUCTURES

ISSN: 0263-8223

年份: 2019

卷: 226

6 . 3 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:211

JCR分区:1

被引次数:

WoS核心集被引频次: 13

SCOPUS被引频次: 13

ESI高被引论文在榜: 0 展开所有

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