| 摘要 |
PROBLEM TO BE SOLVED: To keep steel columns within the range of restoring force due to prestress by controlling the vibration or quake of the steel columns due to horizontal force to suppress the quake of a construction when repetitively subjected to strong quake due to a great earthquake or strong wind.SOLUTION: The construction built up using the steel-framed columns includes tendons arranged in the cross sections of the steel columns at the cross section centroids of the steel columns and/or in symmetry to the cross section centroids, respectively, the tendons each having a lower end anchored to a foundation and arranged toward an upper layer and an upper end tensed and anchored to a proper position in the upper layer to impart prestress thereto. When the horizontal force of an earthquake or the like operates thereon, the prestress introduced into the steel columns operates as restoring force to restore deformation into the original shape, thus suppressing quake and preventing the great deformation of the construction. |
