简支钢板-混凝土组合板考虑滑移效应的弯矩修正

Simply Supported Steel- concrete Composite Slab Considering the Effect of Slip Bending Correction

对于按规范方法计算钢板-混凝土叠合梁板抗弯承载力与实际情况比较,由于没有考虑交界面的相对滑移,造成了计算值的偏大,从而在设计运用中可能偏于不安全。本文根据简支钢板-混凝土组合板在跨中集中荷载的试验情况下得到极限弯矩对应的极限荷载,同时根据理论推导考虑滑移效应的极限弯矩公式,再运用多元非线性回归分析根据试验值对理论公式进行修正,这样可以进一步减小由于理论推导中的某些假定带来的偏差,从而使公式相对于设计规范的方法更接近实际。

Methods calculation according to the specificationfor steel and concrete composite beam bending bearing capacitycompared with the actual situation, Because there is nointerface relative slip was considered, calculated value of large,Thus in the design application may not be safe, Based on thesimply supported steel and concrete composite slab under concentratedload in the cross test get the ultimate bending momentcorresponding to the ultimate load, At the same time accordingto the theory derived considering the effect of slip ultimate bendingmoment formula, Using multivariate nonlinear regression analysisthe theoretical formulas are modified according to the testresults, So that we can further reduce the deviation caused bythe theoretical derivation of some assumptions, Which is themethod of formula relative to the design specification is closer tothe actual.