Winkler与三参数弹性地基梁模型的计算比较

The Calculation Comparision Between Winkler and Tri-Parameter Elastic Foundation Beam Model

三参数弹性地基梁模型是在Winkler模型基础上的改进.为说明三参数模型的实用性,以Winkler弹性地基梁和三参数模型为理论计算基础,采用有限元法分别求解,并用Matlab编制程序进行计算及绘图.通过对计算实例的比较和分析,表明三参数模型计算方法在计算基底位移、基底反力时比Winkler模型更加符合实际,在计算梁内力时与Winkler模型基本相同,最后对影响因素进行了分析.

Tri-parameters elastic foundation beam model has been modified from Winkler model. In order to demonstrate its practicality, the present research employed the Finite element method to solve the solutions and illustrated them by Matlab programs. Subsequently, the comparison and analysis results of true cases indicated that the tri-parameter model was more appropriate than the Winkler model in the calculation of the fundus displacement, the fundus reaction. These two method＇s results were nearly equal in the internal force calculation. Finally, the influences were analyzed.