偏心支撐鋼框架（EBSF）被廣泛用於高的初始勁度和消能，降低地震荷載和位移。然而，連桿梁為了消散能量可能會導致嚴重損害到梁和相鄰的地板，並導致複雜和昂貴的維修。新EBSF採用一個單獨的短梁，期望避免以前的樓層損壞，並增加更多的減震效果。
本研究為探討新偏心斜撐的耐震行為的表現，使用SAP2000動力歷時分析和靜力側推分析。研究的參數是：（1）15個地震輸入（2）地震倍數5倍（3）3種不同樓層的結構（5，10，20層）（4）3種不同的結構類型（EBSF，抗彎矩構架，同心斜撐構架）。由此產生的基底剪力和位移進行了比較和討論。

主要研究成果如下：
1.新偏心斜撐之平均樓層偏移隨著地震倍數增大而變大，地震倍數越大平均樓層偏移增加越快；新偏心斜撐之基底剪力與地震倍數大約成線性關係。
2.新偏心斜撐之平均樓層位移不論在5層樓，10層樓，20層樓結構物，曲線相似且數值相近；新偏心斜撐之基底剪力在5層樓最大、20層樓最小。
3.新偏心斜撐與其他2構架相比後可得知在中小型地震效果不好，地震越大效果越佳。
4.新偏心斜撐與其他2構架相比後可得知在5樓時，偏心斜撐的平均樓層位移及基底剪力折減率為最高，效果最好。而樓層越高，最大平均樓層位移及基底剪力的折減率會越少，效果降低。
5.新偏心斜撐構架可有效減小抗彎矩構架過大的平均樓層偏移；及有效減小同心斜撐過大的基底剪力。

The Eccentricity Braced Steel Frames (EBSF) are widely used for its high initial stiffness and energy dissipation and the resulting lower earthquake loading and displacement. However, the using of the girder as the energy dissipation element may cause severe damage to the girder and adjacent floor, and therefore result complex and expensive repairing latter after. The new proposed EBSF adopts a separate energy dissipation element other than the girder, therefore avoiding the previous handicap and gaining more flexibility on designing the damping effect.

This study investigates the performance of seismic behavior of the new EBSF. The dynamic time history analysis and static push over analysis are implemented by using SAP2000. The parameter studied are (1) 15 earthquake inputs (2) 5 seismic intensities (3) 3 different story structures (5, 10, 20 stories) (4) 3 different structure types (EBSF, moment resistance frame, concentricity frame). The resulting base shear and displacement are compared and discussed.

The results from this limited study are:
1.Average storey drift in the new eccentric bracing frames increased faster with large earthquake magnitudes. And the base shear and earthquake intensity were approximately in a linear relationship.
2.For the new eccentric bracing frames were similar the curves and values of the average storey drift in 5 storey, 10 storey, 20 storey. The base shear was maximum in 5 storey and minimum in 20 storey.
3.Comparing to other two frames, the new eccentric bracing frame performance better at large intensity.
4.Average storey drift and base shear reduction rate was best for EBSF compared to other two frames. Otherwise, as the storey increasing, the effect is reduced.
5.The new eccentric braced frame could effectively reduce the average storey drift comparingto the moment resisting frames, and in the same time it could reduce the base shear comparing to the concentric braced frame.

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