Bearing Strength of Bolted Timber Joints

Soltis, Lawrence A.; Hubbard, Finn K.; Wilkinson, T. L.

doi:10.1061/(asce)0733-9445(1986)112:9(2141)

Cited by 37 publications

(18 citation statements)

References 2 publications

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“…The characteristics of the bearing stress are substantially influenced by the diameter of the dowels, the loading angle to the grain, and the moisture content [15][16][17]. The test results showed that the dowelbearing stress loaded parallel to the grain was relatively much higher than the bearing stress loaded perpendicular to the grain.…”

Section: Resultsmentioning

confidence: 99%

Lateral Load Resistance of Laminated Veneer Lumber Sengonwooden Joints with Wooden Dowels

Palaeowati¹,

Awaludin²,

Siswosukarto³

2015

MST

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Analytical models for wooden-doweled joints need to be developed. The objective of this research is to determine whether the strength of wooden-doweled joints can be well predicted by equations developed for steel-doweled joints. In this experiment, various connection parameters, such as dowel diameter, species of the wooden dowel, and angle of joints, are studied. The joint specimens are loaded in a quasi-static state with four replications each. A5% offset diameter method is used to determine the lateral load resistance of the tested joints, while the predictions are evaluated by equations given in Indonesian National Standard (SNI) 7973-2013 and the European Yield Model (EYM). The results show that experimental lateral resistance is greater than that of the SNI prediction and is between the EYM prediction of elastic and the plastic conditions of the wooden dowel. Lateral load resistances given by the SNI and the elastic condition EYM are around 64.53% and 78.45% of the experimental result, respectively. In contrast to steeldoweled joints, the ductility coefficient of wooden-doweled joints increases as the dowel diameter increases. This is potentially due to the axial stiffness of the wooden dowels being relatively smaller than that of the wood member. Joint failure occurs due to plastic bearing deformation in the wood member surrounding the dowel, followed by the formation of two plastic hinges in the wooden dowel. AbstrakTahanan Lateral Sambungan Kayu LVL Sengon dengan Alat Sambung Pasak Kayu. Sambungan kayu dengan pasak kayu perlu dikembangkan khususnya terkait dengan model analisisnya. Tujuan dari penelitian ini adalah mengetahui apakah kekuatan sambungan kayu sistem pasak kayu dapat diprediksi dengan persamaan yang dikembangkan dengan sambungan baut besi atau tidak. Pada penelitian ini, parameter kekuatan sambungan dikaji dengan melakukan variasi diameter pasak, berat jenis pasak dan sudut sambungan. Pengujian sambungan dilakukan secara quasi-statik monotonik dengan empat sampel ulangan. Metode offset 5% diameter digunakan untuk menentukan tahanan lateral sambungan eksperimen, sedangkan prediksinya dilakukan dengan persamaan SNI 7973-2013 dan EYM. Hasil penelitian menunjukkan bahwa tahanan lateral eksperimen lebih besar dibandingkan dengan prediksi SNI dan berada di antara prediksi EYM kondisi elastis dan plastis pasak kayu. Tahanan lateral prediksi SNI dan EYM elastis berturut-turtu sebesar ± 64,53% dan ±78,45% dari nilai tahanan lateral eksperimen. Berbeda dengan sambungan kayu menggunakan baut besi, nilai daktilitas sambungan kayu dengan pasak kayu meningkat dengan penggunaan diameter pasak yang lebih besar. Hal tersebut sangat mungkin karena nilai kekakuan aksial (EA) pasak kayu jauh lebih kecil daripada kekakuan aksial batang kayu yang disambung. Kegagalan sambungan terjadi berupa rusak tumpu pada kayu sambungan serta terbentuknya dua sendi plastis (titik bengkok) pada pasak kayu.

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Section: Resultsmentioning

confidence: 99%

Lateral Load Resistance of Laminated Veneer Lumber Sengonwooden Joints with Wooden Dowels

Palaeowati¹,

Awaludin²,

Siswosukarto³

2015

MST

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“…This theory is based on the assumption that the embedding of wood and bending of bolts have stiff-plastic behaviors. Some studies have been performed to compare the yield strengths of bolted joints calculated by the yield theory with experimental results, and its compatibility has been confirmed [2,16,26,[58][59][60][61]. Johansen proposed formulae for the shear strengths of single and double shear joints with wood side members.…”

Section: Analytical Approach To Determine Shear Strengthmentioning

confidence: 95%

“…Shear tests with various l/d ratios have been conducted by numerous researchers on the major types of bolted joints as shown in Fig. 3, including double shear joints with wood side members [15,[23][24][25][26], steel side plates [15,19,[26][27][28], and slotted-in steel plate [17,19,26], and single shear joints with a wood side member [23,26] and a steel side plate [26]. Bolted joints with larger l/d ratios tended to exhibit higher loads at the proportional limit and yield load, and those loads exhibited almost constant values when the l/d ratio was more than some value.…”

Section: Geometrical Factormentioning

confidence: 99%

Strength of bolted timber joints subjected to lateral force

Sawata

2015

J Wood Sci

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The safety and serviceability of timber structures are frequently governed by the performance of joints. Bolted joints are a very commonly used form of joints and are effective from the viewpoint of the load-slip characteristics when subjected to a lateral force. The shear strength of a bolted joint is affected by various factors. Some of the factors affecting the shear strength of a bolted joint are classified into four categories in this paper: the material characteristics, geometrical factors, assembly conditions for the bolted joint, and factors that act during its service. This paper reviews the effects of these factors on the shear strength of a bolted joint. Numerous experimental studies were performed on the shear strength of a bolted joint. The effects of these factors on the shear strength varied according to the kind of shear strength and loading direction to the grain. In addition to the experimental investigations, analytical investigations to estimate the shear strength of a bolted joint are also discussed in this paper. Estimations of the yield strengths of bolted joints have been performed by numerous researchers; and in recent years, there has been an increase in studies to predict the load at failure.

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“…Connection resistance is based on the use of (a) statistical models fit to test data, (b) verified analytical models using yield theory (McLain and Thangjitham, 1983;Soltis, et al, 1986;Soltis and Wilkinson, 1987), or (c) test data directly. These estimates have been combined with traditional safety levels and cast into an LRFD format.…”

Section: C71 Generalmentioning

confidence: 99%

“…Analytical models were developed by Johansen (1949) to predict connection yield load. The models have been shown by McLain and Thangjitham (1983), Soltis et al ( , 1986, and others to accurately predict connection behavior.…”

Section: C75 Bolts Lag Screws Drift Pins and Dowelsmentioning

confidence: 99%

Standard for Load and Resistance Factor Design (LRFD) for Engineered Wood Construction

null¹

1996

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to provide design provisions based on reliability theory. This standard was the result of deliberations of a team of structural engineers and wood material scientists with wide experience and high professional standing. The team included professionals from private practice, industry, government, and universities. By reflecting this current state of knowledge, the LRFD Standard offers uniform practice in the design of engineered wood structures. It specifically covers such topics as: 1) Design requirements; 2) tension members; 3) compression members and bearing; 4) flexura! members; 5} members with combined bending and axial loads; 6) mechanical connections; 7) structural-use panels; 8) shear walls and diaphragms; and 9) serviceability. In addition, the Appendices address issues such as: 1) Resistance of spaced columns; 2) glued laminated timber; 3) ponding; 4} qualification of fasteners and connectors; 5) resistance of shear plates; and 6} design of panel-based assemblies. Finally, a Glossary and a Commentary that provides additional background information are included.

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Bearing Strength of Bolted Timber Joints

Cited by 37 publications

References 2 publications

Lateral Load Resistance of Laminated Veneer Lumber Sengonwooden Joints with Wooden Dowels

Lateral Load Resistance of Laminated Veneer Lumber Sengonwooden Joints with Wooden Dowels

Strength of bolted timber joints subjected to lateral force

Standard for Load and Resistance Factor Design (LRFD) for Engineered Wood Construction

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