COLUMN-BEAM CONNECTION STRUCTURE

WIPO Patent Application WO/2010/053189

A1

Bending moment applied to a beam causes out-of-plane deformation to a panel when the panel zone is hollow, and thereby a load bearing by a web cannot be expected in an elastic region.  Since the section modulus of a beam end is limited to the section modulus of only the flange not including the web, the beam end has a low strength.  Therefore, a beam larger in size which bears bending moment on the entire section of the beam must be used and an extra beam depth is required, thus causing an increase in the weight of a steel beam. As the result of various studies, it has been found that various problems could be resolved by increasing the plate thickness of a diaphragm, applying a backing plate to the top surface or the bottom surface of a beam flange, increasing the strength of the material of the beam flange, increasing the thickness of the diaphragm or the backing plate, notching a web, or hot working the bottom surface of the beam to impart prestress thereto.

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UCHIDA, Masayoshi (54-132, Kuchihosoyama Kochi-sh, Kochi 63, 〒7800963, JP)
内田　昌克 (〒63 高知県高知市口細山５４－１３２ Kochi, 〒7800963, JP)
IWAGO, Shunji (228-31, Otsu takaoka-cho, Tosa-sh, Kochi 02, 〒7811102, JP)

JP2009/069096

May 14, 2010

November 10, 2009

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Arcreate Co., Ltd. (54-132, Kuchihosoyama Kochi-sh, Kochi 63, 〒7800963, JP)
株式会社アークリエイト (〒63 高知県高知市口細山５４－１３２ Kochi, 〒7800963, JP)
UCHIDA, Masayoshi (54-132, Kuchihosoyama Kochi-sh, Kochi 63, 〒7800963, JP)
内田　昌克 (〒63 高知県高知市口細山５４－１３２ Kochi, 〒7800963, JP)

E04B1/24; B23K9/00

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