| 摘要 |
PROBLEM TO BE SOLVED: To add a reinforcement structure capable of providing desired rigidity while adopting a lightweight member, and capable of also exhibiting high force transmission performance, to a chassis for supporting a roof being low in its surface rigidity without removing a silver cool roof.SOLUTION: A truss installing seat 5 for supporting a truss is fixed side by side to the indoor side of a lower structure 4 just under a silver cool roof 3 so as to surround an upper part of a space surrounded by a peripheral wall. A cubic truss 2 composed of an upper chord material 6, a lower chord material 7, a diagonal member 8 and a nodal member 9 for joining these is suspended without directly supporting the silver cool roof 3 so as to be fitted in an inside space of building by being supported via this truss installing seat 5. In-plane rigidity just under a roof of the building is reinforced, and force acting on a building upper part by an earthquake can be transmitted to a building lower structure. |
