| 摘要 |
PROBLEM TO BE SOLVED: To provide an aseismatic building eliminating damage of breaking a mortises of through pillars even if attacked by a strong earthquake, reducing the shake of a second floor section with a roof truss shaking when the lower ends of the through pillars shake, in comparison with a conventional building because ball joints of a second story floor are located almost at the center of the through pillars 4, and the heavy second story floor is standstill, and reducing damage of breaking columns of a first floor section to which large load is applied if thick two-stage through pillars are used for the first floor section. SOLUTION: Girders of a steel-framed building are connected by connecting metal fittings. A floor face is lifted from beams by a base isolating device. Ball parts of ball joints are cut in the tips and center parts of stepped through pillars, and the tips of beams and girders are cut into recessed faces. The beams are connected to each other by the connecting metal fittings 1 and then connected to the stepped through pillars 4. A thick styrene foam is laid under a mat foundation to give buoyancy to the building to thereby prevent the settlement of the foundation caused by liquefaction. COPYRIGHT: (C)2007,JPO&INPIT
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