Structural behaviour of CFRP strengthened beam-column connections under monotonic and cyclic loading

被引：19

作者：

Tafsirojjaman, T. ^{[1
,2
]}

Fawzia, Sabrina ^{[1
]}

Thambiratnam, David P. ^{[1
]}

机构：

[1] Queensland Univ Technol, Fac Sci & Engn, Sch Civil & Environm Engn, 2 George St, Brisbane, Qld 4000, Australia

[2] Univ Southern Queensland, Ctr Future Mat CFM, Sch Civil Engn & Surveying, Toowoomba, Qld 4350, Australia

来源：

STRUCTURES | 2021年 / 33卷

关键词：

Welded beam-column connections; Strengthening; Carbon fibre reinforced polymer (CFRP); Monotonic loading; Cyclic loading; STEEL BEAMS; FATIGUE BEHAVIOR; MEMBERS; FRP; REHABILITATION; DURABILITY; BUILDINGS; FRAME;

D O I：

10.1016/j.istruc.2021.06.028

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Welded beam-column connections may be vulnerable to failure under cyclic loading conditions. These connections might require strengthening to resist static and cyclic loads as they may exhibit inadequate capacity due to the design errors or material properties degradation because of severe environmental effects or an increase in service loads. With this in mind, a series of full-scale experiments have been conducted to investigate the behaviour of the bare and strengthened welded beam-column connections under both monotonic and largedisplacement cyclic loading. Carbon fibre reinforced polymer (CFRP) is used as the strengthening material in the present study along with epoxy adhesive as the bonding material. The experimental study conclusively showed the benefits of CFRP composites to improve the performance of welded connections under both monotonic and cyclic loadings. Under monotonic loading, the ultimate moment capacity, stiffness, dissipation of energy and ductility of the welded connections improved by strengthening with CFRP. Additionally, under cyclic loading, the CFRP strengthened welded connections showed improvement in moment hysteresis behaviour, higher stiffness and energy dissipation capacity compared to their bare counterparts. Moreover, the experimentally obtained moment capacities match reasonably well with the theoretically predicted moment capacities.

引用

页码：2689 / 2699

页数：11

共 47 条

[21]

Haitao, 2012, CHINA CIV ENG J, P4

[22] Fatigue design of CFRP strengthened steel members [J].

Hu, Lili ;

Feng, Peng ;

Zhao, Xiao-Ling .

THIN-WALLED STRUCTURES, 2017, 119 :482-498

[23] Durability of CFRP strengthened circular hollow steel members under cold weather: Experimental and numerical investigation [J].

Kabir, M. H. ;

Fawzia, S. ;

Chan, T. H. T. .

CONSTRUCTION AND BUILDING MATERIALS, 2016, 123 :372-383

[24] Durability of CFRP strengthened steel circular hollow section member exposed to sea water [J].

Kabir, M. H. ;

Fawzia, S. ;

Chan, T. H. T. ;

Badawi, M. .

CONSTRUCTION AND BUILDING MATERIALS, 2016, 118 :216-225

[25] Experimental and numerical investigation of the behaviour of CFRP strengthened CHS beams subjected to bending [J].

Kabir, M. H. ;

Fawzia, S. ;

Chan, T. H. T. ;

Gamage, J. C. P. H. ;

Bai, J. B. .

ENGINEERING STRUCTURES, 2016, 113 :160-173

[26]

Li Z.X., 2004, Theory and Technique of Engineering Structure Experiments

[27] Prediction of fatigue life for CFRP-strengthened steel plates [J].

Liu, Hongbo ;

Xiao, Zhigang ;

Zhao, Xiao-Ling ;

Al-Mahaidi, Riadh .

THIN-WALLED STRUCTURES, 2009, 47 (10) :1069-1077

[28] Shrinkage behavior enhancement of infra-lightweight concrete through FRP grid reinforcement and development of their shrinkage prediction models [J].

Liu, Yue ;

Tafsirojjaman, T. ;

Dogar, Attiq Ur Rahman ;

Hueckler, Alexander .

CONSTRUCTION AND BUILDING MATERIALS, 2020, 258

[29] Lessons from damage to steel buildings during the Northridge earthquake [J].

Mahin, SA .

ENGINEERING STRUCTURES, 1998, 20 (4-6) :261-270

[30] Experimental investigation on European welded connections [J].

Mele, E ;

Calado, L ;

De Luca, A .

JOURNAL OF STRUCTURAL ENGINEERING, 2003, 129 (10) :1301-1311

← 1 2 3 4 5 →