CONSTRUCTION METHOD AND STRUCTURE FOR SEISMICALLY STRENGTHENING EXTERNAL FRAME OF EXISTING BUILDING

摘要

PROBLEM TO BE SOLVED: To enable all horizontal and vertical forces of an existing building during earthquakes to be borne when structural resistance of the existing building cannot be expected because cracks tend to appear, as in the case of a low-strength concrete building.;SOLUTION: A box-shaped external frame 20, which is provided with planes 22N, 22S, 22W, 22E and 22C of brace structure facing an exterior wall surface and a roof surface of an existing building 10, is constructed on the outer periphery of the existing building 10. Only the plane 22C of brace structure, which faces the roof surface of the existing building 10, of the external frame 20 is connected to the existing building 10, and all horizontal and vertical forces acting on the existing building 10 during earthquakes are borne.;COPYRIGHT: (C)2014,JPO&INPIT