New Design Method for Lap Scarf Joint Used for Reconstruction of Timber Structures

Hasníková, Hana; Tippner, Jan; Kunecký, Jiří; Kloiber, Michal; Sebera, Václav

doi:10.15224/978-1-63248-083-5-25

Cited by 2 publications

(1 citation statement)

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“…Arciszewska-Kedzior et al and Hasníková et al used a lapped scarf joint with inclined faces and wood dowels to repair the beam-end in historical timber beams, and investigated the mechanical behavior of the lapped scarf joint by an experimental and numerical model [4,5]. Li et al used self-tapping wood screws to reinforce the lap joint in a spliced beam [6].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Analysis of a Reinforced Wood Lap Joint

Wang

Shao³

2020

Materials

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During the restoration of ancient wood structures, the original material of the structures should be kept as much as possible, so a spliced method by using lap joints is commonly used to repair ancient wood structures. This study studies the mechanical behavior of a lap joint which was reinforced with fiber composite materials or steels. An experimental and numerical analysis were performed to study the strength, stiffness and failure modes of the lap joints. The test results showed that the strengthening effect of sticking carbon fiber-reinforced polymer (CFRP) sheets is better than that of sticking CFRP bars or steel bars due to the better bonding conditions; therefore, the lap joint reinforced with CFRP sheets was further analyzed using a numerical approach. The strength and stiffness were enhanced by increasing the reinforcement ratio of CFRP sheets. The use of a 0.34% reinforcement ratio made the bearing capacity of the lap joint reach that of the intact beam. The numerical model agreed well with the experiments in terms of stiffness. By analyzing the numerical analysis results, the structural behavior of the lap joint was revealed. A numerical model can be used to predict the stiffness and behavior of spliced beams with lap joints of different sizes.

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Section: Introductionmentioning

confidence: 99%