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车桥随机振动作用下的桥梁动态影响线研究

徐文涛 张建波 魏星

徐文涛, 张建波, 魏星. 车桥随机振动作用下的桥梁动态影响线研究[J]. 应用数学和力学, 2015, 36(9): 914-923. doi: 10.3879/j.issn.1000-0887.2015.09.003
引用本文: 徐文涛, 张建波, 魏星. 车桥随机振动作用下的桥梁动态影响线研究[J]. 应用数学和力学, 2015, 36(9): 914-923. doi: 10.3879/j.issn.1000-0887.2015.09.003
XU Wen-tao, ZHANG Jian-bo, CHEN Yong-jie. Dynamic Deflection Influence Line of Bridge Subjected to VehicleBridge Random Vibration[J]. Applied Mathematics and Mechanics, 2015, 36(9): 914-923. doi: 10.3879/j.issn.1000-0887.2015.09.003
Citation: XU Wen-tao, ZHANG Jian-bo, CHEN Yong-jie. Dynamic Deflection Influence Line of Bridge Subjected to VehicleBridge Random Vibration[J]. Applied Mathematics and Mechanics, 2015, 36(9): 914-923. doi: 10.3879/j.issn.1000-0887.2015.09.003

车桥随机振动作用下的桥梁动态影响线研究

doi: 10.3879/j.issn.1000-0887.2015.09.003
基金项目: 国家自然科学基金(11402235);教育部科学技术研究重点项目(212105)
详细信息
    作者简介:

    徐文涛(1980—),男,河南人,副教授,博士,硕士生导师(E-mail: xukeyangzi@aliyun.com);魏星(1981—),男,河南人,讲师,硕士(通讯作者. E-mail: 12900664@qq.com).

  • 中图分类号: U441.2

Dynamic Deflection Influence Line of Bridge Subjected to VehicleBridge Random Vibration

Funds: The National Natural Science Foundation of China(11402235)
  • 摘要: 将传统的静态影响线概念推广到动态影响线范围,研究了在车辆荷载和桥面随机不平度的作用下,简支梁桥和三跨弹性支承梁桥跨中挠度的动态影响线.基于虚拟激励法将桥面不平度转化为确定性的简谐激励,并采用精细积分法对车桥系统方程求解,获得了桥梁跨中挠度动态影响线的均值和标准差.基于 法则构造虚拟激励输出响应的确定值计算方法,获得了桥梁挠度动态影响线的确定性值域.最后通过算例分析了桥梁动态影响线的随机特性和车速与桥面不平度等级变化对桥梁动态影响线的影响,并研究了简支梁桥和弹性支承梁桥在随机振动作用下的动态影响线差异.
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出版历程
  • 收稿日期:  2015-04-25
  • 修回日期:  2015-05-21
  • 刊出日期:  2015-09-15

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