Strengthening timber beams with near surface mounted carbon fiber reinforced polymer rods

Qingfeng Xu; J. F. Chen; Lei Zhu; Xiangmin Li; Fuwen Zhang

Strengthening timber beams with near surface mounted carbon fiber reinforced polymer rods

Qingfeng Xu^*, J. F. Chen, Lei Zhu, Xiangmin Li, Fuwen Zhang

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

Many timber structures may require strengthening due to either decay and aging or an increase of load. This paper presents an experimental study in which eleven timber beams were tested, including three unstrengthened reference beams and eight beams strengthened with NSM CFRP bars. The test parameters include the position of NSM (tensile face or the bottom of the sides), the number of CFRP bars (1 or 2), and additional anchorage of NSM CFRP bars (steel wire U anchors or CFRP U strips). The test results show that the ultimate flexural strength of the timber beams were increased by 14%∼85% with an average of 47% due to NSM CFRP bar strengthening. Their deflection corresponding to the peak load was increased by 33% in average.

Original language	English
Title of host publication	Proceedings of the 6th International Conference on FRP Composites in Civil Engineering, CICE 2012
Publisher	International Institute for FRP in Construction (IIFC)
Publication status	Published - 2012
Externally published	Yes
Event	6th International Conference on FRP Composites in Civil Engineering, CICE 2012 - Rome, Italy Duration: 13 Jun 2012 → 15 Jun 2012

Conference

Conference	6th International Conference on FRP Composites in Civil Engineering, CICE 2012
Country/Territory	Italy
City	Rome
Period	13/06/2012 → 15/06/2012

Keywords

CFRP bars
Near surface mounted (NSM) rods
Strengthening
Timber beams

ASJC Scopus subject areas

Polymers and Plastics
Civil and Structural Engineering

Cite this

@inproceedings{f2ace9ab1328496093b7680f5219ac1b,

title = "Strengthening timber beams with near surface mounted carbon fiber reinforced polymer rods",

abstract = "Many timber structures may require strengthening due to either decay and aging or an increase of load. This paper presents an experimental study in which eleven timber beams were tested, including three unstrengthened reference beams and eight beams strengthened with NSM CFRP bars. The test parameters include the position of NSM (tensile face or the bottom of the sides), the number of CFRP bars (1 or 2), and additional anchorage of NSM CFRP bars (steel wire U anchors or CFRP U strips). The test results show that the ultimate flexural strength of the timber beams were increased by 14%∼85% with an average of 47% due to NSM CFRP bar strengthening. Their deflection corresponding to the peak load was increased by 33% in average.",

keywords = "CFRP bars, Near surface mounted (NSM) rods, Strengthening, Timber beams",

author = "Qingfeng Xu and Chen, {J. F.} and Lei Zhu and Xiangmin Li and Fuwen Zhang",

year = "2012",

language = "English",

booktitle = "Proceedings of the 6th International Conference on FRP Composites in Civil Engineering, CICE 2012",

publisher = "International Institute for FRP in Construction (IIFC)",

note = "6th International Conference on FRP Composites in Civil Engineering, CICE 2012 ; Conference date: 13-06-2012 Through 15-06-2012",

}

Xu, Q, Chen, JF, Zhu, L, Li, X & Zhang, F 2012, Strengthening timber beams with near surface mounted carbon fiber reinforced polymer rods. in Proceedings of the 6th International Conference on FRP Composites in Civil Engineering, CICE 2012. International Institute for FRP in Construction (IIFC), 6th International Conference on FRP Composites in Civil Engineering, CICE 2012, Rome, Italy, 13/06/2012.

Strengthening timber beams with near surface mounted carbon fiber reinforced polymer rods. / Xu, Qingfeng; Chen, J. F.; Zhu, Lei et al.
Proceedings of the 6th International Conference on FRP Composites in Civil Engineering, CICE 2012. International Institute for FRP in Construction (IIFC), 2012.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Strengthening timber beams with near surface mounted carbon fiber reinforced polymer rods

AU - Xu, Qingfeng

AU - Chen, J. F.

AU - Zhu, Lei

AU - Li, Xiangmin

AU - Zhang, Fuwen

PY - 2012

Y1 - 2012

N2 - Many timber structures may require strengthening due to either decay and aging or an increase of load. This paper presents an experimental study in which eleven timber beams were tested, including three unstrengthened reference beams and eight beams strengthened with NSM CFRP bars. The test parameters include the position of NSM (tensile face or the bottom of the sides), the number of CFRP bars (1 or 2), and additional anchorage of NSM CFRP bars (steel wire U anchors or CFRP U strips). The test results show that the ultimate flexural strength of the timber beams were increased by 14%∼85% with an average of 47% due to NSM CFRP bar strengthening. Their deflection corresponding to the peak load was increased by 33% in average.

AB - Many timber structures may require strengthening due to either decay and aging or an increase of load. This paper presents an experimental study in which eleven timber beams were tested, including three unstrengthened reference beams and eight beams strengthened with NSM CFRP bars. The test parameters include the position of NSM (tensile face or the bottom of the sides), the number of CFRP bars (1 or 2), and additional anchorage of NSM CFRP bars (steel wire U anchors or CFRP U strips). The test results show that the ultimate flexural strength of the timber beams were increased by 14%∼85% with an average of 47% due to NSM CFRP bar strengthening. Their deflection corresponding to the peak load was increased by 33% in average.

KW - CFRP bars

KW - Near surface mounted (NSM) rods

KW - Strengthening

KW - Timber beams

UR - http://www.scopus.com/inward/record.url?scp=84924370407&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84924370407

BT - Proceedings of the 6th International Conference on FRP Composites in Civil Engineering, CICE 2012

PB - International Institute for FRP in Construction (IIFC)

T2 - 6th International Conference on FRP Composites in Civil Engineering, CICE 2012

Y2 - 13 June 2012 through 15 June 2012

ER -

Strengthening timber beams with near surface mounted carbon fiber reinforced polymer rods

Abstract

Conference

Keywords

ASJC Scopus subject areas

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