Compressive behaviours of square timber columns reinforced by partial wrapping of FRP sheets

被引：12

作者：

Dong, J. F. ^{[1
]}

Jia, P. ^{[2
]}

Yuan, S. C. ^{[1
]}

Wang, Q. Y. ^{[1
,2
]}

机构：

[1] Sichuan Univ, Sch Architecture & Environm, Chengdu 610065, Peoples R China

[2] Sichuan Univ Hong Kong Polytech Univ, Inst Disaster Management & Reconstruct, Chengdu 610207, Peoples R China

来源：

MATERIALS RESEARCH INNOVATIONS | 2015年 / 19卷

基金：

中国国家自然科学基金;

关键词：

Compressive behaviour; Experimental study; Timber column; FRP; Reinforcement; WOOD; RODS;

D O I：

10.1179/1432891715Z.0000000001593

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Based on the experimental tests of timber square columns strengthened by fibre-reinforced polymer sheets under axial compression, the failure modes, load carrying capacity, loading-strain curves, ductile and stiffness factors were examined. The results showed that in comparison with specimens without FRP reinforcement, the axial load carrying capacity, the peak of compression strain and stiffness of specimens with fibre-reinforced polymer reinforcement were all improved. The ultimate load carrying capacity of specimens with fibre-reinforced polymer reinforcement was improved by 68.9-100.2%. However, the ultimate displacement was decreased by 46.1-56.9%, and the lowest displacement was found in the specimens strengthened by two layers of basalt fibre-reinforced polymer. Meanwhile, specimens reinforced by two layer of carbon fibre-reinforced polymer and aramid fibre-reinforced polymer sheets showed a higher level of ultimate displacement and stiffness than specimens with basalt fibre-reinforced polymer reinforcement. Additionally, the failure mode of tested specimens was influenced not only by the type of fibre-reinforced polymer sheets but also by the fractured wood texture.

引用

页码：S465 / S468

页数：4

共 11 条

[1]

Borri A., 2013, COMPOS B, V42, P1480

[2] Buckling of layered wood columns [J].

Cas, Bojan ;

Saje, Miran ;

Planinc, Igor .

ADVANCES IN ENGINEERING SOFTWARE, 2007, 38 (8-9) :586-597

[3] Effect of various wood preservatives on limiting oxygen index levels of fir wood [J].

Cavdar, Ayfer Donmez .

MEASUREMENT, 2014, 50 :279-284

[4] Basalt FRP rods for reinforcement and repair of timber [J].

Raftery, Gary M. ;

Kelly, Fiona .

COMPOSITES PART B-ENGINEERING, 2015, 70 :9-19

[5] Low-grade glued laminated timber beams reinforced using improved arrangements of bonded-in GFRP rods [J].

Raftery, Gary M. ;

Whelan, Conor .

CONSTRUCTION AND BUILDING MATERIALS, 2014, 52 :209-220

[6]

Sathre R, 2014, WOOD PUBL SER CIVIL, P311, DOI 10.1533/9780857097729.2.311

[7] FRP Wrapping for RC Columns with Varying Corner Radii [J].

Sharma, Sushil S. ;

Dave, Urmil V. ;

Solanki, Himat .

CHEMICAL, CIVIL AND MECHANICAL ENGINEERING TRACKS OF 3RD NIRMA UNIVERSITY INTERNATIONAL CONFERENCE ON ENGINEERING (NUICONE2012), 2013, 51 :220-229

[8] Strain-based calculation model for centrically and eccentrically loaded timber columns [J].

Theiler, Matthias ;

Frangi, Andrea ;

Steiger, Rene .

ENGINEERING STRUCTURES, 2013, 56 :1103-1116

[9] Compression strength of hollow sandwich columns with GFRP skins and a paulownia wood core [J].

Wang, Lu ;

Liu, Weiqing ;

Hui, David .

COMPOSITES PART B-ENGINEERING, 2014, 60 :495-506

[10] Creep of FRP-wrapped concrete columns with or without fly ash under axial load [J].

Wang, Yuan-Feng ;

Ma, Yi-Shuo ;

Zhou, Lang .

CONSTRUCTION AND BUILDING MATERIALS, 2011, 25 (02) :697-704

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