| Summary: | 碩士 === 國立中央大學 === 土木工程研究所 === 99 === This study focus on the seismic performance through the cyclic loading test of controllable bucking mechanism of multi-layer and multi-span knee brace resisting frame. As shown in the result, the scale of knee braces highly influences its knee bracing frame. The higher strength the buckling of knee braces is,the higher strength and stiffness of frame system increases. If the over-strength buckling of knee braces are deployed, the strength of frame system will be controlled by damage of beam element. Therefore, an appropriate strength of buckling of knee braces should be employed to generate the better seismic performance. However, the timing resulting in occurrence of buckling of knee braces is connected with frame behavior. Provided that the buckling of knee braces occurs earlier, the strength and stiffness of system will be constrained. The finding also indicates that if the wide range of strength scale of buckling is deployed in frame system among different layers, it leads to high discount rate. It is therefore add buckling of knee braces in the multi-layer frame system. Also, the similar strength of buckling of knee brace is preferable in multi-layer frame system.
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