• 综合
  • 标题
  • 关键词
  • 摘要
  • 学者
  • 期刊-刊名
  • 期刊-ISSN
  • 会议名称
搜索

作者:

Zhang, Renbo (Zhang, Renbo.) | Wu, Jintao (Wu, Jintao.) | Jin, Liu (Jin, Liu.) (学者:金浏) | Du, Xiuli (Du, Xiuli.)

收录:

EI Scopus SCIE

摘要:

The elevated fire temperatures cause the deterioration of the mechanical properties of BFRP bars and concrete. A three-dimensional refined numerical model considering the surface characteristics of ribbed BFRP bars was established to study the effect of high temperature on interfacial bond performance. The "sequence coupling" method analyzes the bonding behavior of BFRP bars and concrete under high temperatures or after natural cooling. The validity of the refined model was verified by reproducing the available test results. Then, the bond behavior was compared and discussed. Based on the simulation results, a constitutive model for predicting the bond performance was developed by modifying the available model at room temperature. The results show that the numerical model can observe the bond failure mechanism between the BFRP-concrete interface. The specimens after natural cooling have better bond performance due to the restoration in material properties. The pull-out failure occurs easier at high temperatures, owing to the various change in the property of BFRP bars and the faster increase in BFRP strain. The influence of temperature rise on peak slip is more significant than that on bond strength. The bond strength and peak slip decrease linearly with the increase in temperature. Finally, the developed bond stress-slip constitutive model considering the effect of temperature, can reasonably predict the bond behavior between BFRP bars and concrete.

关键词:

BFRP bars Elevated temperatures Bond -slip model Refined numerical simulation Concrete

作者机构:

  • [ 1 ] [Zhang, Renbo]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn Minist Educ, Beijing, Peoples R China
  • [ 2 ] [Wu, Jintao]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn Minist Educ, Beijing, Peoples R China
  • [ 3 ] [Jin, Liu]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn Minist Educ, Beijing, Peoples R China
  • [ 4 ] [Du, Xiuli]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn Minist Educ, Beijing, Peoples R China

通讯作者信息:

电子邮件地址:

查看成果更多字段

相关关键词:

来源 :

ENGINEERING FRACTURE MECHANICS

ISSN: 0013-7944

年份: 2023

卷: 287

5 . 4 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:19

被引次数:

WoS核心集被引频次:

SCOPUS被引频次: 5

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:

近30日浏览量: 0

归属院系:

在线人数/总访问数:366/4897180
地址:北京工业大学图书馆(北京市朝阳区平乐园100号 邮编:100124) 联系我们:010-67392185
版权所有:北京工业大学图书馆 站点建设与维护:北京爱琴海乐之技术有限公司