| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem wherein an inclined member 22 in a tetrahedral unit frame often obstructs person's walking or the like when compared with an ordinary rigid frame structure or the like to utilize a space in a three-dimensional truss structure. SOLUTION: This modified tetrahedral unit frame 55 is constituted by bending the inclined member 22 in the tetrahedral unit frame constituted by joining a top chord 21 and the inclined member 22 mutually onto an inner side at a predetermined height and angle or curvature and connecting the bent sections mutually by using connection members 56. These modified tetrahedral unit frames 55 are brought into contact mutually and continuously in a plane or three-dimensionally by preventing the top chords 21 from being overlapped, and crossing points of the top chords at the outer peripheries are mutually connected by top chord connection members 24 to constitute a three-dimensional truss 60 and construct a floor 25 on each layer of the three-dimensional truss 60. COPYRIGHT: (C)2009,JPO&INPIT
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