[1]罗浩,郭向荣,唐俊峰,等.高速铁路斜拉桥与T型刚构协作体系车桥耦合振动分析[J].郑州大学学报(工学版),2016,37(04):72-76.[doi:10.13705/j.issn.1671-6833.2016.04.016]
　Luo Hao,Guo Xiangrong,Tang Junfeng,et al.Coupling vehicle-bridge vibration analysis of collaborated system with cable-stayed bridge and T-shape rigid structure on high speed railway[J].Journal of Zhengzhou University (Engineering Science),2016,37(04):72-76.[doi:10.13705/j.issn.1671-6833.2016.04.016]
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高速铁路斜拉桥与T型刚构协作体系车桥耦合振动分析()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
37
期数:
2016年04期
页码:
72-76
栏目:
出版日期:
2016-08-31

文章信息/Info

Title:
Coupling vehicle-bridge vibration analysis of collaborated system with cable-stayed bridge and T-shape rigid structure on high speed railway
作者:
罗浩; 郭向荣; 唐俊峰; 岳健; 刘泽
湖南科技大学土木工程学院,湖南湘潭,411201
Author(s):
1. School of Civil Engineering, Hunan University of Science and Technology, Hunan Xiangtan, 411201;2. School of Civil Engineering, Central South University, Changsha, 410075, China
关键词:
Keywords:
DOI:
10.13705/j.issn.1671-6833.2016.04.016
文献标志码:
A
摘要:
建立了列车、斜拉桥与T型刚构协作体系空间振动的有限单元分析模型,按照轮轨密贴接触假定建立了车-桥系统耦合运动方程组,以德国低干扰谱生成轨道不平顺样本作为激励源,对一座(100 +2×210+ 100)m的斜拉桥与T型刚构协作体系的自振特性以及4种列车车型分别以不同车速通过该桥梁的空间振动响应进行了计算分析,结果表明:在计算桥梁的自振频率时,第一、第二自振频率均为主梁横向弯曲;斜拉桥与T型刚构协作体系可以提高全桥的竖向刚度;德国ICE3车型通过桥梁时,车桥系统振动响应最大,竖向挠跨比约为1/5 440,桥上车辆的各项指标均在我国规范规定的允许值以内;车辆乘客乘坐横、竖向平稳性指标均达到“良好”标准以上,表明该斜拉桥与T型刚构协作体系能较好地满足高速行车要求.
Abstract:
A finite element analysis model for the spatial vibration of a train, cable-stayed bridge, and T-shaped rigid frame collaborative system was established. The coupled motion equations of the vehicle bridge system were established based on the assumption of wheel rail close contact. The German low interference spectrum was used to generate track irregularity samples as excitation sources, and a (100+2) × The natural vibration characteristics of a 210+100) m cable-stayed bridge and a T-shaped rigid frame collaborative system, as well as the spatial vibration response of four train models passing through the bridge at different speeds, were calculated and analyzed. The results show that when calculating the natural vibration frequency of the bridge, the first and second natural frequencies are both the main beam transverse bending; The collaborative system of cable-stayed bridges and T-shaped rigid frames can improve the vertical stiffness of the entire bridge; When the German ICE3 model passes through a bridge, the vibration response of the vehicle bridge system is the highest, with a vertical deflection to span ratio of about 1/5 440. All indicators of the vehicles on the bridge are within the allowable values specified in Chinese regulations; The horizontal and vertical ride comfort indicators of the vehicle passengers both meet the "good" standard, indicating that the cable-stayed bridge and T-shaped rigid frame cooperation system can better meet the requirements of high-speed driving.
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