本文旨在針對『具軟弱層之特殊結構』進行防震措施之研究。綜觀國內之高科技廠房，因實際空間運用之需求，往往特定樓層只有外柱支撐，而缺乏內柱之設計，該樓層相對於其他樓層來說，成為軟弱層，對地震之抵抗能力較其他正常層相差甚遠。

吾人採用有限元素分析軟體SAP2000 Nonlinear為輔助，建立一個三樓結構模型，其第二樓層為軟弱層，針對此具軟弱層之特殊結構，除分析其動力行為外，並提出以液流阻尼器進行補強防震之構想，試以諸多不同補強策略進行分析，互相比對其防震功能。分析結果顯示，適當之防震補強措施，無論在位移、加速度、軸力、剪力及彎矩等各方面，均能發揮控制效果，達到增加結構耐震能力的目的。

Some of special structures which are designed and built for some particular purposes, i.e., relatively weaker story exists in so called high-tech factories in order to afford enough space for the needs of the line of the production. Only external columns are designed in such stories with relatively very big spans. Consequently, the resistance to earthquake is relatively small for those weaker floors when compared to other floors which are normally designed with inner columns.

By means of numerical analysis with SAP2000 Nonlinear software package, a three-story structural model is established with the second story designed to be a weak floor mentioned above. In addition to the dynamic analysis, various policies for aseismatic purposes by using fluid dampers are investigated and analyzed to this model structure. Results show the proper aseismatic measures do provide positive control purpose in the aspects of variables such as displacement, acceleration, axial force, shear force, and bending moment, to this model structure with weak story.

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