A STUDY ON DEFLECTIONS OF CONCENTRATED LOAD ON RECTANGULAR FLAT SLABS

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  • KOJIMA Eiji
    Representative, Kojima Eiji Consulting Engineer Office., Visiting Research Fellow, Research Institute for Science and Engineering, Waseda University, Dr. Eng.

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  • 長方形床の集中荷重によるたわみ量に関する研究
  • チョウホウケイショウ ノ シュウチュウ カジュウ ニ ヨル タワミ リョウ ニ カンスル ケンキュウ

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Abstract

Timoshenko(1959) set up the two supported conditions by the 1st ; the simple support along edges, and the 2nd ; the fixed support along edges, and suggested the calculation formulas through the concentrated load on a deflection in the center of rectangular flat slabs. This method, however, was only a solution of the specific slenderness ratio, and the support conditions were not restraint along edge of the actual slabs, but using his calculation formulas, it was insufficient. The objective of this study is to frame calculation formulas of a deflection in the center of rectangular flat slabs of arbitrary slenderness ratios when the concentrated load is made up in the center of rectangular flat slabs. The author calculated such support conditions as the following, the 1st ; the simply support along edges, the 2nd ; the fixed support along edges, the 3rd ; the simple support along two adjoining and the other edges built-in edges, the 4th ; the semi-fixation.

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