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首页> 外文期刊>Journal of Earthquake Engineering >SEISMIC DESIGN AND ANALYSIS OF A KNEE BRACED FRAME BUILDING
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SEISMIC DESIGN AND ANALYSIS OF A KNEE BRACED FRAME BUILDING

机译：斜撑框架结构的抗震设计与分析

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A five-storey steel frame incorporating dissipative knee elements is designed using the Eurocode 8 pushover analysis method. The non-linear analysis makes use of a novel knee element model capable of accurately simulating the bending and shear behaviour observed in full-scale tests. The performance of the structure is assessed using non-linear time-history analysis. This shows that the knee elements can be designed to yield under small earthquakes or early in a strong one (maximising their energy dissipation) while still being able to withstand a large event without collapse. Knee elements thus have the potential to give excellent seismic performance in steel framed structures. The time history analysis results are compared to those obtained with the three different pushover analysis methods (Eurocode 8, FEMA 356 and ATC 40). The FEMA 356 method, which includes a more accurate representation of the structure's significant post-yield stiffness, gave the closest agreement with the time history analyses, while the Eurocode 8 method gave rather conservative results and the ATC 40 method appears non-conservative for this type of structure.
机译：使用Eurocode 8推覆分析方法设计了一个五层钢框架，其中包含耗散膝盖元素。非线性分析利用了新颖的膝盖元素模型，该模型能够准确模拟在满量程测试中观察到的弯曲和剪切行为。使用非线性时间历史分析评估结构的性能。这表明，可以将膝关节元件设计为在小地震或强地震的早期屈服（最大程度地消耗能量），同时仍然能够承受较大的事件而不会塌陷。因此，膝关节元件有可能在钢框架结构中提供出色的抗震性能。将时程分析结果与通过三种不同的推覆分析方法（Eurocode 8，FEMA 356和ATC 40）获得的结果进行比较。 FEMA 356方法（包括结构的重要屈服后刚度的更准确表示）与时程分析给出了最接近的一致性，而Eurocode 8方法则给出了相当保守的结果，而ATC 40方法对此似乎并不保守。结构类型。

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