抄録
Shaking table tests have been conducted on the scaled structures in order to obtain fundamental information regarding the dynamic behaviors of multi-storied shear-walls. Eight specimens were tested and variables considered were the number of stories, base support conditions, and the kind of earthquake inputs. Each specimen was subjected to a series of scaled earthquake inputs of increasing intensity to failure. Based on the results of this study the following conclusions can be made. 1. Fundamental periods in the range of small amplitudes can be estimated by the elastic theory at initial stage, but increase gradually up to twice at failure stage with earthquake input level. 2. Envelope curves of hysteretic loops obtained on interstory shear-force versus interstory displacement have nearly the same positive and negative amplitudes regarding both the coordinates. Remarkable phase lags between shearforce and displacement have been found for the eight-storied structures. 3. Maximum lateral load distribution shape along height for eight-storied structures varies from top-most triangular up to uniform while that for four storied structures remains top-most triangular constantly regardless of the input levels. A proposal was made for lateral load distribution and over-turning moment values. 4. Maximum lateral displacement distribution shape remains top-most triangular regardless of the input levels for all the structures. Maximum displacement at any location along wall increases nearly linearly with the input level. And that at third floor was chosen as a basis to discuss lateral displacement distributions.
