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    • 2. 发明专利
    • ROOF FRAME
    • JP2003268915A
    • 2003-09-25
    • JP2002076267
    • 2002-03-19
    • SHIMIZU CONSTRUCTION CO LTD
    • SATO OKIMORI
    • E04B1/34E04B7/14
    • PROBLEM TO BE SOLVED: To realize a roof frame effective for a roof structure of a building. SOLUTION: A plurality of large span rigid beams 1 are parallelly laid and mutually connected to each other to constitute a roof frame. Respective rigid beams are respectively supported by tensile members such as cables 6 from below. Respective rigid beams are bent to be protrusive downward and both the ends are pin-supported to columns to install between the columns. A plurality of struts 8 are erected with every distance at the lower side of the rigid beams. Respective tensile members are supported at the lower end of the struts to be arranged along the lower side of the rigid beams. The tensile members are tensed to anchor the both ends to the support point P of the column and the rigid beam and introduce prestress into the rigid beam. The upper end of a knee brace provided at the outside of the column is connected to the support point P. The prestress is set so as to offset a horizontal component reactive force brought by the own weight of the roof. A brace member to prevent the sideward falling is installed in the strut. COPYRIGHT: (C)2003,JPO