中文摘要：

对钢柱支承网壳结构的强震失效机理开展了系统的研究.首先通过有限元软件ABAQUS分别建立了钢支承结构的有限元模型;然后,对钢柱支承网壳结构开展强震失效机理研究,分析支承结构对网壳结构强震失效特征的影响,考察钢柱支承网壳结构的失效模式;最后,基于结构损伤理论建立钢柱支承网壳结构强震失效判别方法,得到了钢柱支承网壳结构的强震失效规律.

英文摘要：

This paper carries out the study on failure mechanism of reticulated domes with steel substructures under severe earthquakes based on IDA method. Firstly, the accurate and refined analysis model is built, and the material non-linearity of the steel substructure is taken into account. Secondly, the failure characteristics of the reticulated shell with steel substructure are investigated. Typical failure modes of single-layer reticulated domes under the consideration of steel substructure are illustrated. Finally, failure discrimination criterion is proposed to estimate the ultimate load of reticulated domes with steel substructures. It is observed that steel sub- structure has great influence on the failure mechanism of reticulated domes under severe earthquakes.