• 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:

Liu, Caiwei (Liu, Caiwei.) | Qiu, Ziwen (Qiu, Ziwen.) | Zhang, Shilong (Zhang, Shilong.) | Yan, Liangtai (Yan, Liangtai.) | Miao, Jijun (Miao, Jijun.) | Zheng, Chunying (Zheng, Chunying.)

收录:

Scopus SCIE

摘要:

Bond failure is a crucial element in ascertaining the failure mechanisms of reinforced concrete (RC) structures. The investigation pertaining to the dynamic loading's impact on bond efficacy remains a lacuna within scholarly discourse. Therefore, 138 eccentric pull-out half-beam specimens have been fabricated to probe the intricate degradation mechanisms underlying the bond-slip phenomena between concrete and reinforcement when subjected to high-temperature transients. Initially, a series of experiments were conducted on half-beam specimens possessing different reinforcement diameters and embedded lengths. Subsequently, the transient temperature changes within the bond segment were recorded, and this was pursued by the execution of eccentric pull-out tests. Second, the bond stress-strain curves under transient temperature were measured. The experimental findings revealed that the bond strength peaked at 101 degrees C and showed an upward trend up to 302 degrees C. Beyond this temperature, however, the bond strength exhibited a decline. Specifically, at a target temperature of 400 degrees C, the bond strength increased by 18.1% and 9.3% compared to values at 20 degrees C and 200 degrees C, respectively. In contrast, it decreased by 23.2% and 41.3% in comparison to values at 600 degrees C and 800 degrees C. Additionally, as the reinforcement diameter increased, there was a decrease in bond strength, while the ultimate failure force increased. Finally, a methodology for evaluating bond strength under dynamic temperature was introduced, and a semiempirical constitutive model was formulated, taking into account the interplay between different heating rates. The constitutive model underwent validation through temperature computations, proposing a bending moment calculated methods, thus affirming its accuracy under fluctuating temperature scenarios.

关键词:

Constitutive model Stress-strain relationship Transient high-temperature Pull-out test Bond slip behavior

作者机构:

  • [ 1 ] [Liu, Caiwei]Qingdao Univ Technol, Coll Civil Engn, Qingdao 266520, Peoples R China
  • [ 2 ] [Qiu, Ziwen]Qingdao Univ Technol, Coll Civil Engn, Qingdao 266520, Peoples R China
  • [ 3 ] [Zhang, Shilong]Qingdao Univ Technol, Coll Civil Engn, Qingdao 266520, Peoples R China
  • [ 4 ] [Miao, Jijun]Qingdao Univ Technol, Coll Civil Engn, Qingdao 266520, Peoples R China
  • [ 5 ] [Zheng, Chunying]Qingdao Univ Technol, Coll Civil Engn, Qingdao 266520, Peoples R China
  • [ 6 ] [Yan, Liangtai]Beijing Univ Technol, Dept Urban Construct, Beijing 100124, Peoples R China
  • [ 7 ] [Zheng, Chunying]Qingdao Univ Technol, Coll Environm & Municipal Engn, Qingdao 266520, Peoples R China

通讯作者信息:

  • [Yan, Liangtai]Beijing Univ Technol, Dept Urban Construct, Beijing 100124, Peoples R China;;

查看成果更多字段

相关关键词:

来源 :

JOURNAL OF MATERIALS IN CIVIL ENGINEERING

ISSN: 0899-1561

年份: 2024

期: 6

卷: 36

3 . 2 0 0

JCR@2022

被引次数:

WoS核心集被引频次:

SCOPUS被引频次:

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:437/4877903
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