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首页> 外文期刊>International journal of steel structures >Failure Pattern of Singe-layer Reticulated Dome under Severe Earthquake and Its Shaking Table Test
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Failure Pattern of Singe-layer Reticulated Dome under Severe Earthquake and Its Shaking Table Test

机译:地震作用下单层网状穹顶的破坏模式及其振动台试验

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摘要

Based on the constitutive model with considering material damage accumulation, the influence of material damage accumulation on the responses of the structure is investigated in detail through the incremental dynamic analysis method (IDA analysis). The failure pattern of single-layer reticulated dome under dynamic loading is obtained using IDA analysis through multiple sets of seismic load records and harmonic loading, which is identified to be the dynamic instability failure caused by the geometric nonlinearity and the dynamic strength failure resulted by the material nonlinearity. The shaking table tests of single-layer reticulated dome are exploited to verify the failure pattern of the structure under seismic load records. Experimental results show that the plasticity of the model develops and the deformation increases, as well as the mechanical properties weakens continuously with the increasing of the loading value, which indicates that the failure pattern of the structure is dynamic strength failure.
机译:基于考虑材料损伤累积的本构模型,通过增量动态分析方法(IDA分析)详细研究了材料损伤累积对结构响应的影响。通过多组地震荷载记录和谐波荷载,利用IDA分析获得了单层网状穹顶在动态荷载作用下的破坏模式,其被确定为几何非线性引起的动态失稳破坏和应力破坏引起的动态强度破坏。材料非线性。利用单层网状圆顶的振动台试验来验证结构在地震荷载记录下的破坏模式。实验结果表明,随着载荷值的增加,模型的塑性逐渐增强,变形增加,力学性能不断减弱,表明结构的破坏模式为动态强度破坏。

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