Moment-rotation relationship of mortise-through-tenon connections in historic timber structures

Ma, Linlin; Zhao, Xiangbi; Dai, Wuqiang; Xue, Jianyang; Zhao, Xi

doi:10.1016/j.conbuildmat.2019.117285

Cited by 39 publications

(18 citation statements)

References 12 publications

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“…(2) Penetrated tenon. The unreinforced TJS0's forward and reverse loading hysteresis curves are asymmetric, which is manifested in that the reverse loading's hysteresis loop area and bearing capacity are slightly larger than those of the forward loading, because the step tenon structure is asymmetric, which leads to the difference between the mechanical mechanisms of forward and reverse rotations [33]. The relative symmetry of TJS1 curve is due to the fact that the proportion of the reaction provided by the damper with the same forward and reverse mechanical properties than the wood joint itself means that the difference between the forward and reverse directions of the whole figure is reduced.…”

Section: Analysis Of Moment-rotation Hysteresis Curve Of Jointsmentioning

confidence: 99%

Experimental Study on Tenon and Mortise Joints of Wood-Structure Houses Reinforced by Innovative Metal Dampers

Wen

et al. 2022

Forests

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To improve the seismic performance of Chinese traditional wood-structure houses, this paper proposes to strengthen their mortise and tenon joints by applying an innovative metal damper. According to the dimensions of the “Yikeyin” wood-structure houses in the Tonghai area of Yunnan Province, two groups of six samples of three types of mortise and tenon joints were manufactured, in which one group was mounted with dampers made of Q235 steels. Subsequently, a low-cycle repeated loading test was conducted to examine the overall behavior of these joints. Various characteristics of seismic performance indexes, such as the moment–rotation hysteresis curve, skeleton curve, stiffness degradation, energy dissipation capacity, residual amount of tenon and the removal before and after reinforcements of straight, penetrated and dovetail tenon joints were analyzed. The test results show that these tenons exhibit good deformation capacity, their hysteresis curves became fuller and their “pinch” effects were significantly reduced, all after their joints became strengthened, indicating that their joint slips were reduced during the loading processes and their residual amounts of tenon removals were under effective control. Compared with the blank group, the joint stiffness was substantially improved, and the increase in the reverse stiffness turned greater than that of the positive stiffness at each stage of loading, while the degradation curve of the whole joint stiffness became steeper. After mounting the dampers, the bearing capacity and energy dissipation of the joints were significantly improved, the equivalent viscous damping coefficients of the straight and penetrated tenon joints were increased, but that of the dovetail joint was slightly reduced. These study results can provide a reference for the reinforcement and protection of traditional wood-structure houses.

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Section: Analysis Of Moment-rotation Hysteresis Curve Of Jointsmentioning

confidence: 99%

Experimental Study on Tenon and Mortise Joints of Wood-Structure Houses Reinforced by Innovative Metal Dampers

Wen

et al. 2022

Forests

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“…Several experimental tests have been carried out to investigate the behavior of full-scale structures using shaking tables (see e.g., Figure 7a) or sub-structures subjected to lateral loadings [79][80][81][82][83][84][85][86][87][88][89][90][91][92][93][94]. At the component scale, for log houses and timber frame buildings, cyclic or monotonic tests have been performed on shear walls as the lateral load-bearing system, while in post and beam systems with beam-column connections that resist lateral loads, the connections are simulated as illustrated in Figure 7b,c.…”

Section: Seismic Vulnerability Assessmentmentioning

confidence: 99%

Structural Vulnerability Assessment of Heritage Timber Buildings: A Methodological Proposal

Shabani

Kioumarsi

Plevris

et al. 2020

Forests

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The conservation of heritage structures is pivotal not only due to their cultural or historical importance for nations, but also for understanding their construction techniques as a lesson that can be applied to contemporary structures. Timber is considered to be the oldest organic construction material and is more vulnerable to environmental threats than nonorganic materials such as masonry bricks. In order to assess the structural vulnerability of heritage timber structures subjected to different types of risk, knowledge about their structural systems and configurations, the nature and properties of the materials, and the behavior of the structure when subjected to different risks, is essential for analysts. In order to facilitate the procedure, different assessment methods have been divided into the categories in situ and ex situ, which are applicable for vulnerability assessments at the element and full-scale level of a case study. An existing methodology for structural vulnerability assessments and conservation of heritage timber buildings is reviewed and a new methodology is proposed.

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“…Chen et al (2011) published a manual detailing several characteristics of semi-rigid connections. So, several works have presented the formulation that consider plane straight elements with internal springs, e.g, (Perkins et al, 1964;Weaver Jr and Gere, 1965;McGuire et al, 2000;Chen et al, 2011;Kassimali, 2011, Guo et al, 2015Sun et al, 2015;Ma et al, 2020;Alrubaidi et al, 2020). It is in this context that this work is developed.…”

Section: ) Introductionmentioning

confidence: 99%

Plane straight elements with semi-rigid connections: formulation from an energetic approach

Sousa,

Pitaluga,

Cheung

2024

Preprint

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This work presents the analytical development of the stiffness matrix of a plane straight element with semi-rigid connections and its support reactions for three loading cases from the application of the Principle of Virtual Work. Semi-rigid connections are represented by translational and rotational linear elastic springs at both ends of the element, giving it six degrees of freedom. One example shows the application of this formulation using the Classical Displacement Method and the results are also obtained numerically via the Finite Element Method.

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Moment-rotation relationship of mortise-through-tenon connections in historic timber structures

Cited by 39 publications

References 12 publications

Experimental Study on Tenon and Mortise Joints of Wood-Structure Houses Reinforced by Innovative Metal Dampers

Experimental Study on Tenon and Mortise Joints of Wood-Structure Houses Reinforced by Innovative Metal Dampers

Structural Vulnerability Assessment of Heritage Timber Buildings: A Methodological Proposal

Plane straight elements with semi-rigid connections: formulation from an energetic approach

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