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

页数：13

共 50 条

[21] Fatigue Assessment Model of Corroded RC Beams Strengthened with Prestressed CFRP Sheets
Li Song
Jian Hou
International Journal of Concrete Structures and Materials, 2017, 11 : 247 - 259
[22] Study on Flexural Performance of RC Beams Strengthened With Prestressed CFRP Plates
Chen Hua
Kang Kan
Deng Langni
Zhang Peng
ADVANCED BUILDING MATERIALS, PTS 1-4, 2011, 250-253 (1-4): : 3361 - 3366
[23] Study on flexural performance of RC beams strengthened with prestressed AFRP sheets
Zhang, Jianwei
Du, Xiuli
Deng, Zongcai
He, Weiping
Jianzhu Jiegou Xuebao/Journal of Building Structures, 2006, 27 (05): : 101 - 109
[24] Punching behaviour of column-slab connection strengthened with non-prestressed or prestressed FRP plates
Abdullah, A.
Bailey, C. G.
ENGINEERING STRUCTURES, 2018, 160 : 229 - 242
[25] Performance of RC Beams Strengthened Using Prestressed NSM-CFRP Strips Subjected to Fatigue Loading
Oudah, Fadi
El-Hacha, Raafat
JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2012, 16 (03) : 300 - 307
[26] Experimental Study on RC Beams Strengthened with Prestressed CFRP
Liang, Jiongfeng
Wang, Jinbao
Deng, Zhiping
PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON MODELLING AND SIMULATION (ICMS2009), VOL 6, 2009, : 52 - 55
[27] Prestressed and non-prestressed CFRP sheet strengthening: damaged continuous reinforced concrete beams
Wight, RG
El-Hacha, R
Erki, MA
INTERNATIONAL JOURNAL OF MATERIALS & PRODUCT TECHNOLOGY, 2003, 19 (1-2): : 96 - 107
[28] COMPARING THE RIGIDITY OF THE PRESTRESSED AND NON-PRESTRESSED FOUNDATION
Labudkova, Jana
Cajka, Radim
JURNAL TEKNOLOGI, 2016, 78 (5-2): : 111 - 116
[29] An experimental study on fatigue debonding growth of RC beams strengthened with prestressed CFRP plates
Min, Xinzhe
Zhang, Jiwen
Li, Xing
Wang, Chao
Tu, Yongming
Sas, Gabriel
Elfgren, Lennart
ENGINEERING STRUCTURES, 2022, 273
[30] Residual strain analysis of non-prestressed reinforcement in PPC beams under fatigue loading
Jigang Han
Yupu Song
Licheng Wang
Shide Song
Materials and Structures, 2015, 48 : 1785 - 1802

← 1 2 3 4 5 →