刚性楼板假定 rigid diaphragm assumption ; rigid floor hypothesis
Neither floor length to width ratio nor stiffness ratio of floor to shear wall should be the guild line of rigid floor.
不能单纯地根据楼板的长宽比的范围来确定楼板是否为刚性楼板，也不能简单地根据楼板与剪力墙的刚度比来判断楼板是否为刚性楼板。
参考来源 - 影响框剪结构楼板刚性的参数分析·2,447,543篇论文数据，部分数据来源于NoteExpress
对于平面不规则或考虑温度荷载工况的结构，刚性楼板假定会产生较大误差。
The structure with anomalous plane or calculating temperature load will bring large error when the rigid-floor hypothesis is adopted.
结合两个工程实例，分别按弹性正交异性楼板、刚性楼板两种假定对整体结构进行水平地震作用分析。
Two practical tall steel buildings have been analyzed under the action of horizontal earthquakes with the orthotropic shell element hypothesis and the rigid floor hypothesis, respectively.
本文首次把楼板的刚度用剪切刚度表示，它比楼板的弯剪刚度更能体现楼板长宽比对楼板刚性的影响。
In this paper, for the first time, floor stiffness is denoted as shear stiffness, which reflects the influence of floor length to width ratio more effective than floor bend-shear stiffness.
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