板式楼梯设计中挠度计算探讨

Discussion about the Deflection Calculation in the Design of Plate Concrete Stairs

考虑板式楼梯梯板为锯齿形变截面板,通过理论推导,得到半理论半经验法和弹性刚度法挠度计算修正公式。进一步根据AT型楼梯挠度计算工程实例,得出楼梯实际挠度可在计算挠度值基础上乘以0.4或者乘以0.0015梯板厚度系数估算,从而在设计时,有效减小楼梯梯板厚度。

Considering the plate concrete stairs ladder plate deformation section is sawtooth variable cross-section plate,through theoretical derivations,get half theoretical and half empirical method and elastic stiffness calculation method of deflection correction formula. According to the type of AT stairs deflection calculating engineering examples,it is concluded that the stairs actual deflection can be based on calculating the deflection value superior to the coefficient of 0.4 or 0.0015 times the ladder plate thickness coefficient estimation. Thus when we design,this method can effectively reduce the thickness of stairs ladder plate.