Pullout strength of axially loaded steel rods bonded in glulam at a 45º angle to the grain

Molina, Júlio César; Calil, Carlito; Carreira, Marcelo Rodrigo

doi:10.1590/s1516-14392009000400010

Cited by 13 publications

(10 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So, it is noticed that the researchers accomplish adaptations in the dimensions and confi gurations of the model, sometimes placing the concrete in the inside part of the specimen and, other times, inverting that arrangement. In Molina et al 5 it is described the experimental analysis carried out to evaluate the pullout strength and axially loaded steel rods used as connector elements in log-concrete composite bridge decks. In this case, there are no concrete elements on specimen arrangement.…”

Section: Connection Systemmentioning

confidence: 99%

Glulam-concrete composites: experimental investigation into the connection system

Miotto

Dias

2011

Mat. Res.

View full text Add to dashboard Cite

Timber-concrete composite structures work appropriately when a suitable connection system is included because the degree of interaction between the materials stiffs the structural system. Thereby, it is extremely important to improve the knowledge about their connection system. The purpose of this paper is to show the results obtained by experimental investigation into push-out shear tests of glulam-concrete specimens. The specimens were designed to simulate the behaviour of composite T beams and the connection system was constituted by steel hooks -got by the division of steel bars used in reinforced concrete members -and by perforated steel plates, both glued with epoxy adhesive. They were tested under shear forces with constant loading rate. Six specimens of each group were made, considering two different diameters for the hooks (8 and 10 mm) and 4.75 mm thick perforated steel plates. The stiffness reached by steel hooks confirms their suitability for the use in composite timber-concrete systems.

show abstract

Section: Connection Systemmentioning

confidence: 99%

Glulam-concrete composites: experimental investigation into the connection system

Miotto

Dias

2011

Mat. Res.

View full text Add to dashboard Cite

show abstract

“…The dimensions of the steel bars, the bonding area of the steel bar with the wood, the wood specie, the moisture content of the wood and the orientation of the steel bars in relation to the wood are configured as variables that can affect in the values of the strength of the steel bar connections [24]. In this research, steel bars, bonded with epoxy resin, inclined at 45º in relation to grain studied, using round beams of Eucalyptus citriodora (Corymbia citriodora), in order to obtain "X" shear connectors type, as joint elements for mixed structures of wood and concrete.…”

Section: Introductionmentioning

confidence: 99%

Pull out Strength Evaluation of Steel Bars Bonded-in to 45° in Round Timbers of Corymbia citriodora Treated with CCA

Pigozzo¹,

Arroyo²,

Christofóro³

et al. 2017

ijme

Self Cite

View full text Add to dashboard Cite

With the possibility of developing simple connections, of easy execution, strong and durable, the bonded-in steel bars with structural resins have started being applied to different situations, such as shear connectors in mixed wood-concrete structures. These connectors, when steel bars are inclined in relation to the grain, may work under axial forces transmitting more stiffness and strength to the connection. In this research, the pull out strength of bonded-in steel bars was evaluated, bent 45° in relation to wood grain, using epoxy resin Sikadur-32 Fluid. In random sample of round pieces of Eucalyptus citriodora (Corymbia citriodora), CCA treated, with six replications in each observation, and considering the variability of the parameters: natural wood mechanical properties; apparent density; bar diameters; adherence surface and the moisture content. Steel bars used were highly resistant ones (CA-50), with threaded surface solicited by axial force, under monotonic loadings, with two consecutive load cycles. From the analysis of variance (ANOVA), the increase in the moisture content promoted reductions in the values of the compressive strength. The estimate of the pullout strength by the multivariable regression model, the moisture content was considered not significant, increases in the area of anchoring strengths implied significant increases in anchorage strength values, and the interaction between the factors (anchoring area and moisture content) promoted reductions in the anchor strength values of the steel bars.

show abstract

“…Among the types of connections used in timber structures some types can be cited, such as, metallic pin connectors, glued connections and bolts. The metal pins are made by nails, screws, dowels and other common steel bars (MOLINA, 2009). The connectors can be metal rings or sheet metal with patterned teeth.…”

Section: Introductionmentioning

confidence: 99%

Embedment strength of dowels in wood specimens according to ABNT NBR 7190 (1997) and EUROCODE 5 (2004)

Molina¹,

Cesar²,

Almeida³

et al. 2017

REM, Int. Eng. J.

Self Cite

View full text Add to dashboard Cite

The study of connections for timber structures has been the subject of intense research in Brazil. This work aimed to study the embedment strength of connections made by steel pins (dowels) in specimens of reforested woods. Analytical and experimental evaluations were considered in this study. Initially, tests on specimens made from Pinus elliottii (Class C30) and Eucalyptus salligna (Class C50) woods with dowels, type 1020, with diameter of 6.35 mm (1/4") were performed. The tests were performed according to the ANBT NBR 7190 (1997)

show abstract

Pullout strength of axially loaded steel rods bonded in glulam at a 45º angle to the grain

Cited by 13 publications

References 3 publications

Glulam-concrete composites: experimental investigation into the connection system

Glulam-concrete composites: experimental investigation into the connection system

Pull out Strength Evaluation of Steel Bars Bonded-in to 45° in Round Timbers of Corymbia citriodora Treated with CCA

Embedment strength of dowels in wood specimens according to ABNT NBR 7190 (1997) and EUROCODE 5 (2004)

Contact Info

Product

Resources

About