Joint structure and building

By using laminated boards and a tenon-and-mortise joint design, the problem of insufficient strength in wood joining methods is solved, resulting in a high-strength joint structure suitable for high-strength connections in buildings.

CN115956153BActive Publication Date: 2026-07-03SAI GROUP HOLDINGS KABUSHIKI KAISHA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SAI GROUP HOLDINGS KABUSHIKI KAISHA
Filing Date
2021-06-24
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

In the prior art, timber joining methods are difficult to provide high-strength jointed structures suitable for buildings, especially when metal components are not used, it is difficult to achieve sufficient allowable yield strength and ultimate yield strength.

Method used

Using laminated timber with multiple layers of boards as jointing components, the wooden boards are connected crosswise or side-by-side through a mortise and tenon structure. Combined with specific fiber orientation and rounded corner design, a high-strength joint structure is formed.

Benefits of technology

This technology enables the jointed structure to have an allowable yield strength of at least about 10 kN and an ultimate yield strength of at least about 18 kN without the use of metal components, thereby improving the seismic resistance and overall strength of the building.

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Abstract

This invention provides a joint structure and a building comprising a jointing member suitable for a butterfly joint. The joint structure of this invention includes a first wooden board, a second wooden board, and a tenon-like jointing member joining the first and second wooden boards. The joint structure has an allowable yield strength of about 10 kN or more. In one embodiment, the bending strength of the wooden board in the joint structure is 1:2.2 to 1:3.6 compared to the bending strength of the jointing member.
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