Low rigidity column bases, PIN base method, suitable for the column bases of low-rise buildings.
H-shaped column use (PH type) / square steel pipe column use (PB type)
It is suitable as a column base for low-rise buildings such as single-story and two-story structures. Since the foundation shape can be simplified, it reduces the total cost compared to conventional pinned column bases!
The "PIN Base Method," which has been improved to reduce rotational stiffness compared to conventional pin column bases and bring it closer to a PIN joint, aims to enhance design flexibility and constructability. Due to its low stiffness, the PIN Base Method is suitable for the column bases of low-rise buildings such as single-story and two-story structures. By simplifying the foundation shape, it leads to a reduction in total costs compared to conventional pin column bases. 【Features】 ■ Reduces stiffness to about 1/10 of that of conventional pin column bases - By providing slits, the PIN plate is made easier to deform, achieving lower stiffness than conventional pin column bases. - By eliminating the backfill mortar, it becomes possible to reduce stiffness compared to conventional pin column bases. ⇒ Because of the low stiffness, it is possible to reduce the size and amount of rebar in the foundation. ■ Allows for shallower excavation The PIN Base Method significantly shortens the anchorage length of anchor bolts to 13.3d (minimum value 400mm). ■ Obtained evaluation from the Japan Building Center ■ Standardizes foundation column shapes - The PIN Base Method standardizes foundation column shapes for each type, eliminating the need for separate design.
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basic information
【Refinement Points】 ● Enlarged bolt hole diameter of the base plate The bolt hole diameter of the base plate has been enlarged, increasing the clearance with the anchor bolts from 5mm to 14mm. This has improved workability during steel frame construction. ● Installation of cushioning material on the column side and the top surface of the base plate In the PIN base method, cushioning material is installed to prevent bending moments from being transmitted to the slab concrete through the column and base plate. This allows for the slab concrete top level to be set arbitrarily. ● Rust prevention treatment for the base plate and center steel plate has become possible. In the PIN base method, the shear resistance is calculated assuming that the underside of the base plate and the center steel plate are treated with paint for rust prevention. The standard specification does not include painting of the base plate. If painting is to be done, please follow the specifications based on JIS K 5674. *For details, please request a catalog or view the PDF data available for download.
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Applications/Examples of results
The PIN-based construction method is suitable for the foundations of low-rise buildings such as single-story and two-story structures due to its low rigidity. *For more details, please contact us.*
Company information
センクシア 東京支店、札幌支店、東北支店、関東支店、北陸支店、中部支店、関西支店、中四国支店、九州支店
In January 2016, we changed our company name to Senkushia Co., Ltd. The floor business has evolved alongside the development of the information society, the foundation and device business contributes to improving the seismic resistance, reliability, and constructability of buildings, the damper business enhances safety and livability by suppressing vibrations, and the seismic business provides innovative solutions for steel reinforcement repair plans. As a pioneer in the industry, we continuously create shining products and services that contribute to the development of a prosperous society.