文档介绍：
随机车辆荷载作用下大跨悬索桥振动响应
研究
姜东
1, 2
3
1, 2
4
1, 2
(1. 东南大学工程力学系,南京 210096;2. 东南大学江苏省工程力学分析重点实验室,南
京 210096;3. 机械工业第六设计研究院有限公司,郑州 450000;4. 东南大学混凝土及
预应力混凝土结构教育部重点实验室,南京 210096)
摘
要:以润扬长江大桥悬索桥为工程背景,提出了一种随机车辆荷载作用下大跨悬索桥振动响应计算方
法。在准确的悬索桥有限元模型基础上,根据实测车辆统计数据采用指数分布模拟随机车流,进而分析悬
索桥动力响应。分析结果表明,结构各关键部位按动力学方法计算的响应更能反映实际情况;悬索桥 1/8
点与 7/8 点处位移响应最为剧烈,在桥梁运行状况的监测中,应重点关注这两个关键区域;车辆超载对桥
梁结构的动力响应有显著影响,在日常运营管理中应严格控制超载车辆的通行。
关键字:随机交通荷载;大跨悬索桥;有限元;振动响应
Dynamic response of large suspension bridge to stochastic
traffic loads
Jiang Dong1, 2, Chen Hongliang3, Fei Qingguo1, 2, Miao Changqing 4, Han Xiaolin1, 2
(1. Department of Engineering Mechanics, Southeast University, Nanjing 210096, China;2.
Jiangsu Key Laboratory of Engineering Mechanics, Southeast University, Nanjing 210096,
China;3. The Sixth Design and Research Institute of Mechanical Industry Co., LTD,
Zhengzhou450000, China;4. Key Laboratory of Concrete and Prestressed Concrete
Structures of Ministry, Southeast University, Nanjing 210096, China)
Abstract: Dynamic analysis of the Runyang Suspension Bridge under random moving vehicular loads
is presented in this paper. According to the observed data from daily traffic on the bridge, an
exponential model is adopted to simulate the random moving vehicular loads. Based on the finite
element model of the bridge, the dynamic responses can be obtained by solvin