Lateral performances of traditional wooden frame with loose penetrated mortise-tenon connection and column foot models

Yu, Pan; Yang, Qingshan; Law, S.S.

doi:10.1016/j.jobe.2021.103793

Cited by 11 publications

(4 citation statements)

References 17 publications

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“…Xue [11][12] et al studied arch foot specimens and used a combination of experimental and numerical simulations to elucidate the effects of compressive strength, modulus of elasticity and coe cient of friction of wood on strength properties. Yu [13] et al investigated the stress performance of a portal timber frame with mortise and tenon joints and footer joints under transverse loading, and the results showed that the transverse performance of the frame is closely related to the synergy of multiple nodes. Researcher Atar and others [14] manufactured ve types of joints, including mortise and tenon joints.…”

Section: Introductionmentioning

confidence: 99%

Comparing and evaluating realistic wood structure models derived from multi-source remote sensing data: A focus on suitability reinforcement

Shi,

Guo,

Liang

et al. 2024

Preprint

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Exploring the comparison and evaluation of wood structure realistic model based on the fusion of multi-source remote sensing data and suitability reinforcement effects, aiming to proactively and accurately prevent potential structural issues to ensure long-term effective preservation of historical buildings. Various point cloud data from different sources were collected using equipment such as unmanned aerial vehicle (UAV) and LiDAR; Based on the point cloud data, a hybrid realistic model was established, using the existing point cloud data to successfully restore the orientation angle of the mortise and tenon interface, the angle was determined to further enhance the real reflection of the existing shape of the column-architrave structure, which provides a more accurate analysis of the structural analysis of the stress model; Based on the establishment of a realistic model, precise identification of weak locations was carried out and two different types of reinforcement were designed. A comparative analysis of the effectiveness of these two types of reinforcement was carried out to determine the most suitable reinforcement scheme applicable to the weakened area. The results show that by performing finite element analysis on the 24 columns in the realistic model, the columns with weak areas—M2W23 columns, were found to present the largest deformation of 4.65 mm in the upper and middle parts of the columns. Of the two reinforcement types, the reinforcement with aluminum alloy material reduced the deformation of the wooden columns from 4.65 mm to 3.5 mm, and after being reinforced, the deformation of the wooden columns was reduced by about 24.7% compared to that before the reinforcement. In comparison, the deformation of the wooden columns was reduced from 4.65 mm to 2.8 mm after reinforcement with different thicknesses of CFRP (Carbon Fiber Reinforced Plastic) sheet, which is a 39.7% reduction relative to the unreinforced condition, showing better stability. Reinforcement with different thicknesses of CFRP sheets provides flexibility to cope with the unequal damage of the wooden columns, thus ensuring an equal distribution of strength throughout the columns. The results indicate that within this structure, different thicknesses of CFRP sheets reinforcement exhibit more suitable performance.

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Section: Introductionmentioning

confidence: 99%

Comparing and evaluating realistic wood structure models derived from multi-source remote sensing data: A focus on suitability reinforcement

Shi,

Guo,

Liang

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Then the stiffness matrix of mixed elements was prepared, including mortise and tenon joints and column feet. Considering the friction-slip-contact behavior of mortise and tenon joints and the rotation behavior of column feet, Yu et al (2021Yu et al ( , 2022a established the beam element model of a single span wooden frame. The anti-lateral movement principle of the wooden frame was analyzed, and the dynamic analysis of the wooden frame was carried out (Yang et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Seismic performance of light wood shear wall infilled timber frame structures with openings

Yang,

Chen

2024

BioRes

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To study the seismic performance of wood frame structures filled with light wood shear walls, three full-size single-layer single span wooden frame structures with infill walls were designed and manufactured. The beams and columns were connected by mortise-tenon joints, and quasi-static tests were conducted on the specimens under reversed cyclic load. The failure modes and load-displacement hysteresis performance of structures with door opening infill wall, window opening infill wall, and solid infill wall were investigated. The seismic performance was analyzed using indicators such as strength, ductility, and equivalent viscous damping ratio. The failure modes of light wood frame filling walls were the tearing of sheathing panel and the failure of nail connections. The filled wall with the opening initially exhibited inclined cracks at the corner of the opening, and then they extended to the periphery. Compared with the solid filled wall, the positive and negative bearing capacity of the structure with door opening decreased, and that of the structure with window opening decreased also. Because the specimens with opening in the filled wall were more conducive to the deformation of the structure when the bearing capacity was not significantly reduced, the ductility of the specimen with door opening was the highest.

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“…Research results indicate that the repeated uplifting and repositioning of timber columns cause the continuous swaying of WFs to the horizontal earthquake action. According to the quasi-static test of timber frames, [1][2][3] when the controlled displacement is unloaded, the strain of the column and Fang (beam) is all in an elastic state except for the joints and the edges of the column foot and head, but the deformation of the WFs cannot be completely restored. If wanting to restore the original shape of the WFs, only load it backward.…”

Section: Introductionmentioning

confidence: 99%

Floating column mechanism experimental investigation in historic timber buildings subjected to decay for seismic resilience

Chen,

Zhai,

Chen

et al. 2023

Structural Design Tall Build

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SummaryTraditional wooden structures are characterized by the presence of a column base that seems to be floated above the foundation stone. This study used pseudo‐static experiments to assess the seismic performance of flat pendulum floating resting columns, focusing on the decay and repair of the wood frame (WF). First, an artificial method was used to simulate fungal decay damage of column‐foot joints, and filling reinforcement was applied to the decayed column‐foot joints, and second, according to the design method in the Sung dynasty architecture, the Ying‐tsaofa‐shih (building standards). This study presents the findings of pseudo‐static tests that were conducted at Yangzhou University. Three 1:3.52 scaled specimen WFs with flat‐pendulum‐floating‐shelf (FPFS)‐typed (Ping‐bai‐fu‐ge) columns, i.e., non‐damaged WF (named after NT), considering the damaged WF (named after DF) and strengthening damaged WF (named after DR) with one‐way straight mortise‐tenon joints (OWSMT) joints were made and subjected to cyclic lateral loads during testing. The properties of the WFs with FPFS columns, such as the failure mode, hysteretic and envelope curves, strength and stiffness deterioration, and energy dissipation, have been studied. Finally, the effects of additional damage and reinforcement measures on the seismic performance of WFs are analyzed and compared with the finite element numerical simulation results. This research shows that damage to the column foot decreases the WF's seismic performance, although filler reinforcement may increase it. The foot and mortise joints are interconnected and interact in the wood frame's seismic stressing mechanism. Foot decay reduces the seismic performance of the foot joint, hence increasing the seismic energy dissipation activity of the mortise joints.

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Lateral performances of traditional wooden frame with loose penetrated mortise-tenon connection and column foot models

Cited by 11 publications

References 17 publications

Comparing and evaluating realistic wood structure models derived from multi-source remote sensing data: A focus on suitability reinforcement

Comparing and evaluating realistic wood structure models derived from multi-source remote sensing data: A focus on suitability reinforcement

Seismic performance of light wood shear wall infilled timber frame structures with openings

Floating column mechanism experimental investigation in historic timber buildings subjected to decay for seismic resilience

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