预应力简支钢箱梁固有频率影响因素分析  

ANALYSIS OF INFLUENTIONAL FACTORS ON NATURAL FREQUENCIES OF SIMPLY SUPPORTED STEEL BOX GIRDER WITH PRESTRESSED TENDONS

作　　者：贾艳敏[1] 王佳伟[1,2] 韩基刚[1] 

机构地区：[1]东北林业大学土木工程学院,哈尔滨150040 [2]辽宁大通公路工程有限公司,沈阳110000

出　　处：《工程力学》2009年第A01期37-40,共4页Engineering Mechanics

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。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 fmite 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.

关 键 词：预应力简支钢箱梁 模型试验 固有频率 有限元 预加力筋 

分 类 号：TU394[建筑科学—结构工程] TU311.3