| 摘要 |
PURPOSE: A roof structure is provided to improve rigidity by forming a frame using stainless steels and light metals and to strengthen the binding force of a column and a girder. CONSTITUTION: A roof structure comprises a lower skeleton(1), a roof skeleton(2), and roof panels(3). The lower skeleton is formed by installing one or more girders(12) on the top ends of columns(11). The roof skeleton is formed by connecting one or more roof frames(21,22) to each other. The roof panels are fixed to the top of the roof skeleton. Each girder comprises lightweight bars(121), high-strength bars(122), brackets, bracket covers, and end covers. The lightweight bars have coupling grooves. The high-strength bars are fixed to the coupling bars. The brackets, the bracket covers, and the end covers are installed on both ends of the lightweight bars and prevent the high-strength bars from being separated from the lightweight bars.
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