【摘要】 在结构动力学关于多自由度自由振动的理论前提下,以两端简支的混凝土箱梁为模型,通过有限元程序ANSYS建模,得到了相应温度条件下的结构响应;分析了不同温度场分布、不同季节、不同跨度对结构模态参数的影响。得出的结论对混凝土箱梁结构的健康检测具有重要的借鉴意义。更多还原

【Abstract】 With the theory of structural dynamics on free vibration of multiple degrees of freedom,a free concrete box beam was built through finite element software ANSYS to get corresponding structural response in given temperatures.The influences of different temperature fields, different seasons and different spans on the structural modal parameters were analyzed.And the conclusion may be of reference for health monitoring of concrete box beam structure.更多还原