Rotational Behavior of Bolted Beam-to-Column Connections with Locally Cross-Laminated Glulam

Wang, Mingqian; Song, Xiaoqian; Gu, Xianglin; Zhang, Yunfan; Luo, Lan

doi:10.1061/(asce)st.1943-541x.0001035

Cited by 63 publications

(32 citation statements)

References 7 publications

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“…The deformability ratios of reinforced connections wrapped using 1and 2 CFRP sheets were 78% and 72% higher than the non-reinforced connections, respectively. The deformability ratios of CFRP-reinforced connections were lower than these of locally cross-laminated connections (3.5, reported by Wang et al [8]), since the debonding failures prematurely took place between the glulam members and CFRP sheets.…”

Section: Deformability Of Unreinforced and Cfrp-reinforced Connectionsmentioning

confidence: 61%

“…Three kinds of rotational angles could be calculated: the rotational angles of the beam and steel plate with respect to the column (θ BC and θ SC , respectively) and the rotational angles of the beam with respect to the steel plate (θ BS ). Three curves of each connection, specifically M column -θ BC , M column -θ SC , and M beam -θ BS could be established and the typical curves were shown in Reference [8]. In this study, only the M column -θ BC relationships of the nonreinforced and CFRP-reinforced connections are compared in Fig.6 for brevity, since M column -θ BC curve is widely accepted by researchers and designers, also due to the ease for comparison with previous test results.…”

Section: Test Resultsmentioning

confidence: 99%

“…The peak point of the M column -θ BC curve was used to determine the maximum moment of the specimen. Considering the initial slack behavior of the connection, the yielding moments were assessed using a method proposed in previous study [8]: the initial stiffness, k, of the M column -θ BC curves was obtained using Eq.1, then a tangent line to the nonlinear M column -θ BC curve with a slope of 1/6 of k was set up; and the moment corresponding to the intersection of the tangent line and the initial stiffness line was defined as the yielding moment, M y .…”

Section: Test Resultsmentioning

confidence: 99%

“…However, the difficulty of drilling full threaded and large diameter STSs into glulam members may cut down the practical significance. Research on the cross-laminated timber (CLT) technique showed that, connections reinforced using locally cross-laminated glulam (often in the jointing area of the beam members) exhibited excellent rotational deformability, even superior than STS-reinforced connections [8]. But locally CLT technique can only be used in new buildings rather than existing structures.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Rotational Behavior of Bolted Glulam Beam-to-column Connections Reinforced Using CFRP Sheets

Wang¹,

Song²,

Gu³

et al. 2014

Proceedings of the 2014 International Conference on Mechanics and Civil Engineering

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In this study, three groups of bolted glulam beam-to-column connections with slotted-in steel plates (in total 11 full-scale specimens) were tested under monotonic loading to investigate the rotational behavior of such connections with the use of carbon fiber reinforcing polymer sheets wrapping. The influence of CFRP sheet layers on the performance improvement of the connections was also quantified. The test results indicated that the maximum moments were increased by 14% and 18% for reinforced connections wrapped using 1 and 2 layers of CFRP sheets, respectively; furthermore, the deformability ratios evaluated based on the rotation angles corresponding to the yielding and maximum moments, respectively, were increased by 78% and 72%. It was also found that the variation of the maximum moment of reinforced connections can be reduced with increased layers of CFRP sheets.

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Section: Deformability Of Unreinforced and Cfrp-reinforced Connectionsmentioning

confidence: 61%

Section: Test Resultsmentioning

confidence: 99%

Section: Test Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental Study on Rotational Behavior of Bolted Glulam Beam-to-column Connections Reinforced Using CFRP Sheets

Wang¹,

Song²,

Gu³

et al. 2014

Proceedings of the 2014 International Conference on Mechanics and Civil Engineering

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“…Blaß et al [19] introduced this concept into bolted glulam butt joint connections and found that it improved the performance excellently. Wang et al [20] pre-reinforced the bolted column joints with locally cross-laminated glulam members and found that the reinforcement method was effective. However, there is still no research about the pre-reinforcement of mortise and tenon joints in new wood construction.…”

Section: Introductionmentioning

confidence: 99%

Mechanical performance of mortise and tenon joints pre-reinforced with slot-in bamboo scrimber plates

Gong

et al. 2019

J Wood Sci

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This study was aimed at examining the mechanical performance of mortise and tenon joints reinforced with slot-in bamboo scrimber plates. 27 full-scale specimens were manufactured with engineered wood and bamboo products using computer numerically controlled (CNC) technology, then they were tested under monotonic loading. The initial stiffness and moment carrying capacity of joints with different reinforcing configurations were obtained from the established moment-rotational angle relationships. It was found that the initial stiffness of the reinforced mortise and tenon joints increased by 11.4 to 91.8% and the moment carrying capacity increased by 13.5 to 41.7%, respectively. The total width and grain orientation of the reinforcing plates had significant influence on the mechanical performance of the mortise and tenon joints. Fastening the plates to tenon with dowels was beneficial to the mechanical performance of the joints. The embedment length and adhesive type had no significant influence to the structural performance of the joints. This study demonstrated the feasibility of pre-reinforcing mortise and tenon joints in new timber construction, and could assist to promote the application of mortise and tenon joints in modern timber structures.

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Pre‐reinforcing the mortise‐tenon joints with near‐surface‐mounted glued‐in rods

Zhong

Zhao

et al. 2020

Structural Design Tall Build

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SummaryThis paper reported the effects of the pre‐reinforcement to the mortise‐tenon joints with glued‐in rods that were mounted near the surface of the tenon. Fifteen full‐scale specimens that were manufactured with engineered wood products using computer numerically controlled technology were tested under monotonic loading. The initial stiffnesses and moment carrying capacities of joints with different reinforcement configurations were obtained from the established moment–rotational angle relationships. It was found from the tests that the initial stiffness of the reinforced mortise‐tenon joints increased by 2.9% to 30.8%, and the moment carrying capacity increased by 13.6% to 32.0%. Further conclusions drawn from the numerical simulation included the following: increasing the embedment length and diameter of rods, as well as the steel strength of rods and decreasing the distance to the surface, could help enhance the initial stiffnesses and moment carrying capacities of the joints. The moment and initial stiffness decreased with increasing of tenon's height to width ratio. By choosing appropriate parameters, the proposed pre‐reinforcement methods significantly increased the initial stiffness and moment carrying capacity. This study demonstrated the feasibility of pre‐reinforcing mortise‐tenon joints in new timber constructions via near‐surface‐mounted glued‐in rods and is meaningful for promoting wider application of mortise‐tenon joints in modern timber structures.

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Rotational Behavior of Bolted Beam-to-Column Connections with Locally Cross-Laminated Glulam

Cited by 63 publications

References 7 publications

Experimental Study on Rotational Behavior of Bolted Glulam Beam-to-column Connections Reinforced Using CFRP Sheets

Experimental Study on Rotational Behavior of Bolted Glulam Beam-to-column Connections Reinforced Using CFRP Sheets

Mechanical performance of mortise and tenon joints pre-reinforced with slot-in bamboo scrimber plates

Pre‐reinforcing the mortise‐tenon joints with near‐surface‐mounted glued‐in rods

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