線形地震応答での構造躯体の層間変位と2次系変位の相関係数

In the seismic design of nonstructural components, inertial forces and relative displacements are usually considered separately. But the two factors should be appropriately combined in some cases of connecting conditions to the structural frames. In this paper, the correlation coefficients between the story drifts of structural frames and the displacements of secondary systems are investigated in linear seismic responses. An approximate evaluation formula for multistory buildings is presented and validated through response history analysis. It is shown that the correlations are relatively high in the range of periods shorter than the first natural periods of structural frames.