| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce bending moment caused by bearing a vertical load to reduce the cross sections and mass of both chord members while improving the bending rigidity of a trussed string beam including upper chord members, a lower chord member and strut members laid between both chord members, as basic components. <P>SOLUTION: The trussed string beam 1 includes two upper chord members 2, 2 parallel in the width direction; one lower chord member 3 facing both upper chord members 2, 2; and a plurality of strut members 4 laid between the two upper chord members 2, 2 and the lower chord member 3 at spaces in the length direction of the upper chord members 2, 2 and lower chord member 3 to constitute a space truss. Tie members 5 are laid between the two upper chord members 2, and the length direction end of the lower chord member 3 is directly or indirectly connected to the length direction ends of the upper chord members 2, 2 to complete the trussed string beam 1 as a beam. <P>COPYRIGHT: (C)2011,JPO&INPIT |
