Fatigue performance of RC beams strengthened with non-prestressed and prestressed BFRP grids

被引：3
|
作者：
He, Weidong [1 ,2 ]
Cai, Feng [1 ]
Wang, Xin [2 ]
Wu, Zhishen [2 ]
Sun, Zhen [2 ]
Chen, Cheng [1 ]
机构：
[1] Southwest Petr Univ, Sch Civil Engn & Geomat, Chengdu 610500, Peoples R China
[2] Southeast Univ, Key Lab C& PC Struct, Minist Educ, Nanjing 210096, Peoples R China
来源：
ENGINEERING STRUCTURES | 2024年 / 304卷
基金：
中国国家自然科学基金;
关键词：
Fatigue performance; RC beam; Strengthening; Non-prestressed and prestressed; BFRP grids; CONCRETE BEAMS; BEHAVIOR;
D O I：
10.1016/j.engstruct.2024.117594
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The objective of the presented study was to evaluate the fatigue performance of reinforced concrete (RC) beams strengthened with basalt fiber -reinforced polymer (BFRP) grids. A total of eight RC beams (dimensions of 300 x 150 x 2240 mm) were constructed and tested. Out of these, three beams served as the control specimens, and the remaining five beams were strengthened. The variable parameters included the load ranges, presence of prestress, and number of prestress release. The experimental results indicated that the BFRP grids can be used to significantly extend the fatigue life of the beams. Moreover, when employing prestressed BFRP grids for strengthening, the fatigue life of the beams can be further prolonged. Nevertheless, the strengthening effectiveness of prestressed BFRP grids exhibited notable sensitivity to the number of prestress release. For all the strengthened beams, exceptional bonding performance between the BFRP grids and the concrete interface was evident under cyclic loading, and no interface debonding was observed prior to the fatigue failure of the strengthened beams. Based on the relevant experimental data, this study established a fatigue life prediction model for BFRP grid strengthened beams.
引用
收藏
页数：13
相关论文
共 50 条
  • [1] Flexural behavior of RC beams strengthened with prestressed and non-prestressed BFRP grids
    He, Weidong
    Wang, Xin
    Wu, Zhishen
    COMPOSITE STRUCTURES, 2020, 246
  • [2] Fatigue performance of corroded RC beams strengthened with prestressed AFRP sheets
    Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China
    Beijing Gongye Daxue Xuebao J. Beijing Univ. Technol., 2009, 7 (921-927):
  • [3] Experimental study on fatigue performance of RC beams strengthened with prestressed AFRP sheets
    Zhang, Jian-Wei
    Du, Xiu-Li
    Deng, Zong-Cai
    Wang, Zuo-Hu
    Li, Jian-Hui
    Beijing Gongye Daxue Xuebao / Journal of Beijing University of Technology, 2009, 35 (01): : 70 - 77
  • [4] Fatigue performance of RC beams strengthened with externally prestressed PBO fiber sheets
    Wu, Z
    Iwashita, K
    Ishikawa, T
    Hayashi, K
    Hanamori, N
    Higuchi, T
    Ikeda, A
    Takeda, T
    Mupakami, S
    Ichiryu, T
    FIBRE-REINFORCEMENT POLYMER: REINFORCEMENT FOR CONCRETE STRUCTURES, VOLS 1 AND 2, PROCEEDINGS, 2003, : 885 - 894
  • [5] Experimental study on the flexural behavior of RC beams strengthened with prestressed BFRP laminates
    Liu, Changyuan
    Wang, Xin
    Shi, Jianzhe
    Liu, Lulu
    Wu, Zhishen
    ENGINEERING STRUCTURES, 2021, 233
  • [6] Fatigue and static behaviors of RC beams strengthened with prestressed AFRP
    Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing 100022, China
    不详
    Zongguo Gonglu Xuebao, 2007, 6 (49-55):
  • [7] SHEAR AND TORSION DESIGN OF PRESTRESSED AND NON-PRESTRESSED CONCRETE BEAMS
    GERGELY, P
    JOURNAL PRESTRESSED CONCRETE INSTITUTE, 1981, 26 (06): : 98 - 99
  • [8] FATIGUE-STRENGTH OF COLD-WORKED NON-PRESTRESSED REINFORCEMENT IN PRESTRESSED CONCRETE BEAMS
    BENNETT, EW
    JOYNES, HW
    MAGAZINE OF CONCRETE RESEARCH, 1979, 31 (106) : 13 - 18
  • [9] SHEAR AND TORSION DESIGN OF PRESTRESSED AND NON-PRESTRESSED CONCRETE BEAMS
    COLLINS, MP
    MITCHELL, D
    JOURNAL PRESTRESSED CONCRETE INSTITUTE, 1980, 25 (05): : 32 - 100
  • [10] Fatigue performance of prestressed concrete beams using BFRP bars
    Younes, Taha
    Al-Mayah, Adil
    Topper, Tim
    CONSTRUCTION AND BUILDING MATERIALS, 2017, 157 : 313 - 321
12345