Reinforced Round Timber Bolted Joints under Cyclic Loading

Lokaj, Antonín; Klajmonová, Kristýna

doi:10.4028/www.scientific.net/amr.1020.199

Cited by 6 publications

(7 citation statements)

References 14 publications

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“…The mean density for timber of strength grade C24 ρ ref = 420 kg/m 3 was chosen as the reference value. Experimental data from this research also supplemented by some results of previous research activities at the Faculty of Civil Engineering, VŠB-TUO [54][55][56][57][58]. The load-carrying capacities of round timber connections were determined experimentally.…”

Section: Discussion Of the Resultsmentioning

confidence: 99%

Load-Carrying Capacity of Double-Shear Bolted Connections with Slotted-In Steel Plates in Squared and Round Timber Based on the Experimental Testing, European Yield Model, and Linear Elastic Fracture Mechanics

2022

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Nowadays, the use of timber as a building material is gaining more prominence. When designing timber structures, it is necessary to pay increased attention to the design of their connections. The commonly used connections are dowel-type connections, which are often used in combination with steel plates slotted into cut-outs in timber members. The presented paper deals with the behavior of double-shear bolted connections of squared timber and round timber with slotted-in steel plates. Several variants of connections with different distances between the fastener and the loaded end were selected for the experimental testing. A total of six types of test specimens were made from spruce timber, for which their selected physical properties were determined and evaluated before the experimental testing. Test specimens of bolted connections were first tested in tension parallel to the grain until failure under quasi-static loading. The connections were broken by splitting. Ductile failure preceded brittle failure. The actual load-carrying capacities were lowest for the lowest end distance. The load-carrying capacities for the middle and the longest end distances were comparable. The results of the experiments were then used for comparison with calculation procedures according to the standard for the design of timber structures and with calculations according to the theory of linear elastic fracture mechanics. The experiments and the analytical models were supported by a simple numerical analysis based on the finite element method.

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Section: Discussion Of the Resultsmentioning

confidence: 99%

Load-Carrying Capacity of Double-Shear Bolted Connections with Slotted-In Steel Plates in Squared and Round Timber Based on the Experimental Testing, European Yield Model, and Linear Elastic Fracture Mechanics

2022

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“…The aim of this study is also to build on previous research activities conducted at the Faculty of Civil Engineering of the VSB Technical University of Ostrava by Klajmonova et al A series of experiments was carried out to compare the load-carrying capacity of bolted connections with inserted steel plates, both for squared timber and round timber, but always for the same placement and number of fasteners [8][9][10][11]. Methods of effective reinforcement for bolted connections subjected to brittle failure were also designed and tested [12].…”

Section: Research Significancementioning

confidence: 99%

“…The load-carrying capacity and the stiffness of connections are crucial to the serviceability and durability of the whole structure, especially for large-span structures with many connections [1,7] and structures with heavily loaded connections [2]. The most common types of connections in timber structures use metal mechanical fasteners, which are often used in combination with steel plates slotted into cut-outs in timber members (see Figure 1) [8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Effects of Loaded End Distance and Moisture Content on the Behavior of Bolted Connections in Squared and Round Timber Subjected to Tension Parallel to the Grain

2020

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This article presents the results of static tests on bolted connections in squared and round timber with inserted steel plates. The experiment evaluates structural timber connections with different distances between the fastener and the loaded end at different moisture contents. Specimens were loaded by tension parallel to the grain and load–deformation diagrams were recorded. Fifty-six specimens with three different distances between the fastener and the loaded end, at different moisture contents, were tested. The results were statistically evaluated using regression analysis, complemented with load–deformation curves, and compared with calculations according to the valid standard for design of timber structures. A decrease in the evaluated load-carrying capacity with increasing moisture content was confirmed experimentally. A slight increase in the evaluated load-carrying capacity with increasing fastener distance from the loaded end was found.

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“…Experimental testing of the connection was realised in the renovated laboratories of the Department of Steel and Timber Structures at the Faculty of Civil Engineering of the SUT in Bratislava. Valuable experiences from foreign research institutions [6], [7] were helpful by the experimentation. The frame connection was designed to withstand a 33 kN vertical force acting on the 1.05-meter-long arm, i.e.…”

Section: Experimental Testingmentioning

confidence: 99%

Experimental Verification of the Stiffness of a Semi-Rigid Timber Connection

Sandanus

Sógel

Klas

et al. 2020

KEM

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Modern fasteners offer new options for the design of timber load-bearing structures. In the design, the traditional hinged connections are increasingly being replaced with semi-rigid connections. Nevertheless, there is no feedback from the actual structures with this kind of connection regarding the accuracy of static calculations. The authors therefore decided to test one connection and compare the results with those obtained from calculation models. The paper presents the experimental verification of the frame connection in which the semi-rigid action was achieved by combining the aluminium Sherpa connector and total thread Rothoblaas screws. The timber samples were provided by Latti Extra.

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Reinforced Round Timber Bolted Joints under Cyclic Loading

Cited by 6 publications

References 14 publications

Load-Carrying Capacity of Double-Shear Bolted Connections with Slotted-In Steel Plates in Squared and Round Timber Based on the Experimental Testing, European Yield Model, and Linear Elastic Fracture Mechanics

Load-Carrying Capacity of Double-Shear Bolted Connections with Slotted-In Steel Plates in Squared and Round Timber Based on the Experimental Testing, European Yield Model, and Linear Elastic Fracture Mechanics

Effects of Loaded End Distance and Moisture Content on the Behavior of Bolted Connections in Squared and Round Timber Subjected to Tension Parallel to the Grain

Experimental Verification of the Stiffness of a Semi-Rigid Timber Connection

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