アウトフレーム連結制振耐震補強のための連結ダンパーの合理的決定法

概要

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The purpose of this paper is to propose a rational inverse problem approach to the seismic retrofitting of an existing building connected with an adjacent newly-built outer frame by viscous dampers. The mass and stiffness of the existing building together with the mass of the outer frame are given. Then the stiffness of the outer frame and the damping coefficient of the connecting dampers are found so that the requirements on the maximum interstory drift of the existing building and on the retrofitting possibility by the outer frame are satisfied. By introducing an approximate but effective relation of an overall damping ratio h^<(1)> with a connecting-damper damping ratio h^R of the rigidly supported model, a repetitive procedure required in the previous paper has been removed. It is concluded that the proposed approach is an effective method for designing the outer frame and the connecting dampers.
2009-02-28