高速列车－钢桁梁桥系统横向振动随机分析
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摘要
本文将高速列车－桥梁视为一整体振动系统，由时变系统随机振动能量分析理论［１］随机模拟出高速列车构架人工蛇行波，以它为激振源算出了列车分别以２００、２５０、３００、３５０ｋｍ／ｈ速度通过４８、６４、９２．９６ｍ单线简支钢衍梁桥时具有９９％概率水平的车桥振动响应，其中计算轮对横向摇摆力与国外高速列车实测横向摇摆力接近。
n this paper,the train and the bridge are considered as a whole vibration system.According to the random vibration energy theory, the vibration responses with demanded 99% probability are calculated when the train runs through the simply supported steel truss bridge of the single track with the respective span of 48 m, 64 m, 92. 96 m at the speed of 200, 250, 300, 350 km/h respectively. Among these results, the calculations of the shaking forces of the train are found to be in satisfactory agreement with other country's test data.
n this paper,the train and the bridge are considered as a whole vibration system.According to the random vibration energy theory, the vibration responses with demanded 99% probability are calculated when the train runs through the simply supported steel truss bridge of the single track with the respective span of 48 m, 64 m, 92. 96 m at the speed of 200, 250, 300, 350 km/h respectively. Among these results, the calculations of the shaking forces of the train are found to be in satisfactory agreement with other country's test data.
引文
1朱汉华．列车一桥梁时变系统振动能量随机分析理论．长沙：长沙铁道学院博士学位论文，19922曾庆元等．列车一桥梁时变系统的横向振动分析。铁道学报，1991；13（2）：383朱汉华，曾庆元．列车－桥梁时变系统振动能量随机分析方法．长沙：长沙铁道学院学报，1994；12（4）4［印］N．C尼格姆．随机振动概论．上海：上海交通大学出版社，19855［美］J．D罗布逊著，谢世浩译．随机振动引论．湖南：湖南科学技术出版社，19806曾庆元，扬平．形成矩阵的“对号入座”法则与桁梁空间分析的桁段有限元法．铁道学报，1986；8（2）：487郭文华．高速铁路多跨简支梁桥横向刚度分析．长沙：长沙铁道学院硕士学位论文，19958杨毅．车桥系统模态综合法与桁梁有载自振特性分析．长沙：长沙铁道学院硕士学位论文，19859［美］R．W．克拉夫，J．彭津著．王光远译．结构动力学．北京：科学出版社，198510何度心著．桥梁振动研究．北京：地震出版社，198911刘语冰编．日本高速铁路轨道概况．北京：中国铁道出版社，1979
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