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作者:

Bai, Yu-Lei (Bai, Yu-Lei.) | Zhang, Yu-Feng (Zhang, Yu-Feng.) | Jia, Jun-Feng (Jia, Jun-Feng.) (学者:贾俊峰) | Mei, Shi-Jie (Mei, Shi-Jie.) | Han, Qiang (Han, Qiang.) | Dai, Jian-Guo (Dai, Jian-Guo.)

收录:

EI Scopus SCIE

摘要:

Large rupture strain (LRS) fiber-reinforced polymers (FRP) composites with an elongation greater than 5% offer an attractive solution for seismic strengthening of reinforced concrete (RC) columns. For a quick and reliable design of LRS FRP-strengthened RC columns, this paper presents a simplified plasticity damage model for LRS FRP-confined concrete under cyclic axial compression. This model consists of two parts: (a) a recent monotonic LRS FRP-confined concrete model developed by the authors' group as an envelope curve and (b) a simplified linear plasticity damage cyclic rule for predicting unloading and reloading paths. To solve the cyclic model deviation induced by concrete softening under a large axial strain, a pseudo-plastic strain was proposed, based on which the damage degradation of FRP-confined concrete can be quantified. The model comparisons show that although the proposed model sacrificed some precision when directly applied for the cyclic axial compressive behavior of FRP-confined concrete, it can give similarly accurate predictions as a complex model does for the behavior of conventional or LRS FRP-jacketed RC columns under a combined axial load and cyclic lateral load. Thus, this simplified plasticity damage model serves as a promising basic model for simulation of the seismic performance of FRP-strengthened structures.

关键词:

Cyclic axial compression Simplified plasticity damage model RC columns Pseudo-plastic strain LRS FRP

作者机构:

  • [ 1 ] [Bai, Yu-Lei]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 2 ] [Zhang, Yu-Feng]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 3 ] [Jia, Jun-Feng]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 4 ] [Mei, Shi-Jie]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 5 ] [Han, Qiang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing, Peoples R China
  • [ 6 ] [Dai, Jian-Guo]Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China

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来源 :

COMPOSITE STRUCTURES

ISSN: 0263-8223

年份: 2021

卷: 280

6 . 3 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:116

JCR分区:1

被引次数:

WoS核心集被引频次: 17

SCOPUS被引频次: 18

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

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