Brief Discussion on the Influence of Rigid Slab with Large Opening Structure
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摘要: [目的] 刚性楼板假定是一般民用建筑结构常用的简化分析方法,其在民用建筑结构中的应用非常广泛且适用性较强。一般的民用结构的夹层及开孔较少,但是电厂厂房结构的夹层及开孔普遍较多,本文目的在于研究刚性楼板假定对具有大开孔结构计算结果的影响。 [方法] 通过大型通用有限元软件MIDAS建立假设的理想开孔结构模型、典型的楼板大开孔民用建筑结构模型、某大型核电厂常规岛厂房结构模型共三个模型进行计算分析。 [结果] 分析表明:刚性楼板假定会对此类结构计算结果产生一定程度上的失真。 [结论] 在具有夹层及大开孔的结构、尤其是在电厂厂房结构的分析应用时需要注意其产生的影响,尽量不采用刚性楼板假定。Abstract: [Introduction] The assumption of rigid floor slab is a simplified analysis method which is widely used in civil building structure and has strong applicability. In general, the interlayer and opening of the civil structure are less, but the interlayer and opening of the power plant structure are generally more. This paper aims to study the influence of rigid floor assumption on calculation results with large openings. [Method] In this paper, a large general finite element software MIDAS was used to establish a hypothetical ideal opening structure model, typical slab large open hole civil architecture model, and a large nuclear power plant conventional island workshop structure model. [Result] The results show that the assumption of rigid floor would cause a certain degree of distortion to the calculation results of such structures. [Conclusion] Therefore, it is necessary to pay attention to the effect of the large opening structure, especially in the analysis and application of the power plant structure, and not to use the rigid floor assumption as long as possible.
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Key words:
- assumption of rigid floor /
- interlayer /
- large opening on floors
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