【摘要】 以预应力简支钢箱梁模型试验的测试结果为基础,应用有限元分析软件ANSYS建立了普通简支钢箱梁和预应力简支钢箱梁有限元分析模型,分析结果得到模型试验的良好验证,并用该模型分析了预加力对简支钢箱梁的固有频率的影响以及钢索索力大小、钢索截面面积和钢箱梁钢板厚度对预应力简支钢箱梁固有频率的影响。更多还原

【Abstract】 Based on the result of model experiment of a simply supported steel box girder with prestressed tendons,finite element models of a simply supported steel box girder and a simply supported steel box girder with prestressed tendons were established with ANSYS finite element analysis software.The accuracy of the finite element analysis is verified well by the comparison with the result of the model experiment.This paper analyzes the effects of the magnitude of prestress forces,the section area of the tendons and the steel plate thickness on natural frequencies of the steel box girder with prestressed tendons.更多还原