【作者】 石春香；

【导师】 贾艳敏； 刘恩德；

【作者基本信息】 东北林业大学 ， 道路与铁道工程， 2001， 硕士

【摘要】 本文主要对预应力钢箱梁进行了振动理论分析。主要内容包括三个方面：预应力钢结构的国内外现状、水平、和发展趋势以及经济建设的要求，预应力钢箱梁的振动理论分析，以及理论计算值和实验值的比较。 通过研究国内外大量的文献资料，回顾预应力钢结构的发展进程及其在基础建设中日益突出的地位，进而总结出预应力钢箱梁将被广泛应用于桥梁的上部结构。在进行预应力钢箱梁的动力分析时，采用了具有分布参数的体系和有限段两种方法，用以确定梁的自振频率和振型，并用有限段方法编写了程序。最后，用钢箱索梁模型试验的测试结果验证本文的理论计算值，分析结果是比较吻合的。更多还原

【Abstract】 The paper mainly analyses the prestressed steel box girder. It?s major content includes three aspects: civil and foreign situation, level, developing trend and demand of economic construction of prestressed steel box girder; dynamic force analysis of prestressed steel box girder and engineering practical example. By studying a great deal of civil and foreign literature material and reviewing the developing process of prestressed steel structure and its increasingly dominant status in the foundation construction, the paper generalizes that prestressed steel box girder will be used abroad in the super structure of bridge, while adapts distributing parameter system and finite element method when the dynamic force analysis of prestressed steel box girder is done, in order to fix on the free vibration frequency and vibration form of girder. Finally, the paper compares the test result of model experiment with the calculating result of the paper, they inosculate well each other.更多还原