Failure mechanisms of single-layer reticulated domes subjected to earthquakes
Failure mechanisms of single-layer reticulated domes subjected to earthquakes
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发表时间：
2007
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通讯作者：
X. Zhi;F. Fan;S. Shen
中科院分区：
文献类型：
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作者：
X. Zhi;F. Fan;S. Shen
研究了单层球面网壳结构在动力荷载作用下的破坏机理。系统地讨论了动力失稳和动力强度破坏两种破坏模式。基于结构在简谐作用下的响应，提出了一种判别失效模式的判据。此外，本文还提出了一种材料损伤累积的方法，用于单层球面网壳结构的地震响应分析。该损伤模型适用于基于不同损伤程度的结构失效模式识别方法。最后，提出了一种确定极限破坏荷载的简化方法。
This paper addresses failure mechanisms of single-layer reticulated domes subjected to dynamic loads. Two failure modes - dynamic instability and dynamic strength failure - are discussed systematically. Based on responses of the structures under harmonic actions, a criterion is proposed to discriminate which failure mode governs. In addition, a measure of material damage accumulation is proposed for analysis of single-layer reticulated domes subjected to earthquakes. This damage model applies to the method for discrimination of failure mode based on the different structural damage levels. Finally, a simplified method for obtaining the ultimate failure load is proposed.