摘要
应用弹性动力学理论和复合板件等效非经典理论，对不等厚钢板混凝土梁的自由振动进行了分析，给出了基本振动方程，并求得自由振动频率方程和振型函数的解析解。
In this paper，a non-equal thicknesses－ surface layer stel-concrete beam hasbeen trandformed into an equivalent transverse isotropic member Usine the elasto-dynamicaltheory as well as the equivalent non-classical theory composite plathe，and three basic as-sumption of plane stress and shear deformation according to straight line dispersal and neglectextruding deformation and tuming inertia effect，by means of dynamical analysis， the gov-eming dynamical equations are given，the analytical solutions for frequences equations andvibrating type functiOn are obtained.
