Sekisui House has been granted a patent for a Cross Laminated Timber (CLT) structure that eliminates interference between an anchor member and a reinforcement member. The structure includes a strip footing with a reinforcing bar, a wall panel with a slit, joint plates embedded in the footing, and drift pins connecting the joint board sections and the wall panel. The joint plate has a joint board section, a flange section, and an anchor bolt positioned below the reinforcement member. GlobalData’s report on Sekisui House gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Sekisui House, Structure Building Framework was a key innovation area identified from patents. Sekisui House's grant share as of September 2023 was 9%. Grant share is based on the ratio of number of grants to total number of patents.
Clt structure with anchor member not interfering with reinforcement
A recently granted patent (Publication Number: US11708679B2) describes a Cross Laminated Timber (CLT) structure that offers improved stability and strength. The structure includes a footing made of concrete with a reinforcement member extending horizontally. A wall panel, made by laminating and bonding sawn boards, features a longitudinal slit on its lower end surface. A joint plate is partially embedded in the footing and has a flat plate-shaped joint board section that projects upward from the footing's upper surface. A connecting member connects the joint board section and the wall panel by inserting the projecting joint board section into the slit of the wall panel.
The joint board section is positioned above the reinforcement member, aligning its longitudinal direction with the direction of the reinforcement member. The joint plate also includes a flange section embedded in the footing, extending perpendicular to the joint board section, and an anchor member embedded in the footing, extending downward from the flange section. The lower end of the anchor member is positioned below the reinforcement member, enhancing the structural integrity of the CLT structure.
In one embodiment, the CLT structure includes a pair of joint plates that overlap their joint board sections and have flange sections extending in opposite directions. These joint plates are embedded in the footing, further reinforcing the structure. The anchor members are offset in opposite directions from the center of the joint board sections.
The joint board section and flange section are formed by bending a rectangular metal flat plate material into an L-shape in cross-section. The joint board section has multiple plate holes passing through its thickness, while the wall panel has corresponding panel holes passing through it via the slit. These plate holes and panel holes can overlap, allowing a connecting member, such as a pin, to be inserted to secure the joint board section and wall panel together.
To provide additional support, a spacer is positioned between the footing and the wall panel in some embodiments of the CLT structure.
Overall, this patented CLT structure offers improved stability and strength through the use of joint plates, anchor members, and connecting members. The design allows for efficient construction and enhanced structural integrity, making it suitable for various applications in the construction industry.
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