Repair of Full-Scale Timber Bridge Chord Members by Shear Spiking

Burgers, Travis; Gutkowski, Richard M.; Balogh, Jenő; Radford, Donald W.

doi:10.1061/(asce)1084-0702(2008)13:4(310)

Cited by 7 publications

(13 citation statements)

References 12 publications

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“…A large test series on damaged beams of railway bridges reinforced by means of GFRP rods installed with β = 90° is reported by RADFORD et al [6] and BURGERS et al [56]. A considerable increase of the shear stiffness of damaged beams was observed in the tests.…”

Section: Shear Reinforcementmentioning

confidence: 90%

FRP reinforcement of timber structures

Schober

Harte

Kliger

et al. 2015

Construction and Building Materials

149

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Timber engineering has advanced over recent decades to offer an alternative to traditional materials and methods. The bonding of fibre reinforced plastics (FRP) with adhesives to timber structures for repair and strengthening has many advantages. However, the lack of established design rules has strongly restrained the use of FRP strengthening in many situations, where these could be a preferable option to most traditional techniques. A significant body of research has been carried out in recent years on the performance of FRP reinforced timber and engineered wood products. This paper gives a State of the Art summary of material formulations, application areas, design approaches and quality control issues for practical engineers to introduce on-site bonding of FRP to timber as a new way in design for structural repair and rehabilitation.

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Section: Shear Reinforcementmentioning

confidence: 90%

FRP reinforcement of timber structures

Schober

Harte

Kliger

et al. 2015

Construction and Building Materials

149

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“…The study described in the present paper was a continuation of the work of Burgers (2005) and Burgers et al (2005Burgers et al ( , 2008. In their tests, the specimen was already in place as an assembled three-span, four-stringer chord, and the stringers were new members.…”

Section: Shear Spikingmentioning

confidence: 69%

“…Successful use of shear spiking to stiffen and strengthen small-, medium-and large-sized wood members subjected to ramp loading has been demonstrated in past research (Burgers, 2005;Burgers et al, 2005Burgers et al, , 2008Radford et al, 2000Radford et al, , 2001Radford et al, , 2002Radford et al, , 2003Schilling, 2004;Schilling et al, 2004Schilling et al, , 2008. The objective of the overall study, of which the portion described in the current paper is only a part, was to examine effects of shear spiking on stiffness and strength of intentionally damaged, full-scale, timber bridge stringers.…”

Section: Shear Spikingmentioning

confidence: 99%

“…In addition, a field demonstration of shear spiking on an actual inservice timber trestle bridge has been arranged with a major railroad company and, when completed and documented, will also be published. Burgers (2005) and Burgers et al (2005Burgers et al ( , 2008 performed laboratory testing of a full-scale, three-span, open-deck, timber trestle railroad bridge chord that was strengthened through shear spiking. The researchers intentionally and sequentially damaged the centre span by cutting the four stringers horizontally along the neutral axis with a chain saw.…”

Section: Shear Spikingmentioning

confidence: 99%

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Load tests of damaged railroad timber stringers repaired by shear spiking

Forsling¹,

Gutkowski²,

Radford³

et al. 2012

Proceedings of the Institution of Civil Engineers - Structures

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The effectiveness of intentionally damaged full-size timber bridge members repaired by shear spiking was examined experimentally. Pultruded fibre-glass composite rods are inserted vertically through areas of damage to rejuvenate the horizontal shear properties of timber members. An epoxy-resin adhesive is used to bond the fibre-glass shear spikes to the wood and partially fill adjacent cracks and decay voids. Eight full-size railroad bridge timber stringers were intentionally damaged by partial or complete saw cuts through the width of the members to simulate minor and major deterioration, after which they were stiffened through the process of shear spiking. Although minor damage had much lower initial effects than major damage, significant percentage recovery of lost stiffness occurred in all members. Structures and Buildings Volume 165 Issue SB6 Load tests of damaged railroad timber stringers repaired by shear spiking Forsling, Gutkowski, Radford and Balogh Structures and Buildings Volume 165 Issue SB6 Load tests of damaged railroad timber stringers repaired by shear spiking Forsling, Gutkowski, Radford and Balogh Structures and Buildings Volume 165 Issue SB6 Load tests of damaged railroad timber stringers repaired by shear spiking Forsling, Gutkowski, Radford and Balogh Radford DW, Gutkowski RM, VanGoethem D and Peterson ML (2001) Composite repair of timber structures.

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“…Burgers and colleagues (Burgers 2005;Burgers et al, 2005Burgers et al, , 2006Burgers et al, , 2008 performed the first study on the use of the shear spiking technique on full-scale timber railroad bridge chord members. The members used were of good condition and load tests were done after intentionally damaging the members arranged in a three-span, four-stringer bridge chord.…”

Section: Introductionmentioning

confidence: 99%

Z-spike rejuvenation of timber railroad bridge members

Gutkowski¹,

Miller²,

Radford³

et al. 2010

Proceedings of the Institution of Civil Engineers - Structures

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This study examined the effectiveness of using fibreglass reinforced polymer (FRP) spikes in rejuvenating naturally damaged and deteriorated timber railroad bridge chord members. Shear spiking involves inserting the spikes vertically into the members. They are held in place by an adhesive and serve to improve horizontal shear transfer at cracks in the members. Past research had shown that this process can be highly effective in improving the effective stiffness of bridge chord members that were intentionally damaged. This study included four specimens that were salvaged from the field with varying damage conditions. The effect of shear spiking on the effective stiffness of the members was examined by means of load testing. It was observed that the increase in the effective stiffness of the specimens was highly dependent on the initial condition of the specimens. Members with modest damage and deterioration exhibited only a modest benefit from shear spiking. The two most damaged specimens used in the study showed the most promising results, displaying a 267 and 291% increase in effective stiffness, respectively, after completing the spiking. This result suggests the potential for shear spiking as a highly effective technique for in situ repair of damaged or deteriorated timber railroad bridge chord members.

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Repair of Full-Scale Timber Bridge Chord Members by Shear Spiking

Cited by 7 publications

References 12 publications

FRP reinforcement of timber structures

FRP reinforcement of timber structures

Load tests of damaged railroad timber stringers repaired by shear spiking

Z-spike rejuvenation of timber railroad bridge members

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