许多高层建筑结构的分析方法均假定楼板在自身平面内刚度无限大，而平面外的刚度则忽略不计。这一假定大大减少了结构位移的自由度，简化了计算方法。
...刚性楼板假定 中图分类号 O242.21，TU371 [gap=963]Key words：shear wall; bending stiffness out of plane; rigid diaphragm assumption ...
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...：刚性楼板假定;弹性楼板假定;振型分解反应谱法;时程分析法;侧刚分析法;总刚分析法 [gap=477]Keywords: rigid floor hypothesis; Elastic floor hypothesis; Vibration mode decomposition response spectrum metho..
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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.
本文在已有研究的基础上假定楼板为平面内无限刚性考虑同层中桁架层对敞开层柱子的支持作用，对空腹式和混合式两种交错桁架体系进行柱子计算长度系数研究。
The column's effective length of steel staggered truss systems was studied based on the assumption of rigid diaphragm of floor including vierendeel truss and composite truss arrangement.
分别采用了刚性和弹性楼板假定，并考虑了垂直地震作用、温度应力对结构内力与变形的影响，验算了罕遇地震作用下结构的弹塑性变形。
The influences of rigid and elastic floor slab assumption, vertical earthquake action and the temperature stress on the structural internal force and deformation are analyzed.
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