曲线桥梁车桥耦合振动数值分析方法

doi:10.13229/j.cnki.jdxbgxb20210678

吉林大学学报(工学版) ›› 2023, Vol. 53 ›› Issue (2): 515-522.doi: 10.13229/j.cnki.jdxbgxb20210678

• 交通运输工程·土木工程 • 上一篇下一篇

曲线桥梁车桥耦合振动数值分析方法

韩智强¹(),谢刚²(),周勇军³,刘世忠¹,晋民杰¹

^1.太原科技大学车辆与交通工程学院，太原 030024
^2.太原科技大学先进控制与装备智能化山西省重点实验室，太原 030024
^3.长安大学公路大型结构安全教育部工程研究中心，西安 710064

收稿日期:2021-07-16 出版日期:2023-02-01 发布日期:2023-02-28
通讯作者: 谢刚 E-mail:hzqjl1987@163.com;xiegang@tyust.edu.cn
作者简介:韩智强（1987-），男，副教授，博士. 研究方向：桥梁检测与评估. E-mail： hzqjl1987@163.com
基金资助:
国家自然科学基金项目(51978063);中央高校基本科研业务费专项项目(300102211512);山西省高等学校科技创新计划项目(2022L302);校研究生联合培养示范基地项目(JD2022019);校教学改革创新项目(JG202274)

Numerical analysis method of vehicle⁃bridge coupling vibration of curved bridge

Zhi-qiang HAN¹(),Gang XIE²(),Yong-jun ZHOU³,Shi-zhong LIU¹,Min-jie JIN¹

^1.School of Vehicle and Transportation Engineering，Taiyuan University of Science and Technology，Taiyuan 030024，China
^2.Shanxi Key Laboratory of Advanced Control and Equipment Intelligence，Taiyuan University of Science and Technology，Taiyuan 030024，China
^3.Engineering Research Center for Large Highway Structure Safety of the Ministry of Education，Chang'an University，Xi'an 710064，China

Received:2021-07-16 Online:2023-02-01 Published:2023-02-28
Contact: Gang XIE E-mail:hzqjl1987@163.com;xiegang@tyust.edu.cn

摘要/Abstract

摘要：

为研究曲线桥梁车桥耦合振动响应规律，基于模态综合法原理，建立15自由度五轴重卡车型，以50+100+50 m三跨曲线连续梁桥（R=600 m）为计算示例，建立仿真模型，获取桥梁模态信息，基于轮-桥位移几何和力学耦联关系，提出曲线桥梁车桥耦合数值分析方法，探讨了车速、路面不平度、曲率半径和车辆载重等因素对曲线桥梁动力响应的影响。结果表明：路面不平度和车辆载重是影响曲线桥梁动力响应的主要敏感因素；车速对于曲线桥梁的影响较为复杂，难以发现其规律性；曲率半径变化对桥梁扭转角的影响较大，对桥梁竖向位移影响相对较小，相关研究成果可为此类桥梁的动力安全评估提供理论参考。

关键词: 桥梁与隧道工程, 车桥耦合, 模态综合法, 动力响应, 敏感因素

Abstract:

In order to study the variation of vehicle-bridge coupling vibration response of curved bridge， based on the principles of modal synthesis， a 15-degree-of-freedom five-axis trailer space model was established. Taking a 50+100+50 m three-span curved continuous beam bridge （R=600 m） as a calculation example to obtain bridge modal information. Based on the wheel-bridge displacement relationship， a vehicle-bridge coupling numerical analysis method for curved Bridges is proposed， and the influence of vehicle speed， road unevenness， radius of curvature and vehicle load on the dynamic response of curved bridges was discussed. The results show that road roughness and vehicle load are the main sensitive parameters that affect the dynamic response of the bridge. The impact of vehicle speed on curved bridges is complex， and it is difficult to find its regularity. The change in the radius of curvature has a greater impact on the torsion angle of the birdge. The influence of the vertical displacement of the main girder is relatively small. The relevant research results can provide theoretical guidance for dynamic safety assessment of such bridges.

Key words: bridge and tunnel engineering, vehicle-bridge coupled vibration, modal synthesis method, dynamic response, sensitivity factor

中图分类号:

U442.5

韩智强,谢刚,周勇军,刘世忠,晋民杰. 曲线桥梁车桥耦合振动数值分析方法[J]. 吉林大学学报(工学版), 2023, 53(2): 515-522.

Zhi-qiang HAN,Gang XIE,Yong-jun ZHOU,Shi-zhong LIU,Min-jie JIN. Numerical analysis method of vehicle⁃bridge coupling vibration of curved bridge[J]. Journal of Jilin University(Engineering and Technology Edition), 2023, 53(2): 515-522.

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模态阶数	频率/Hz	自振特性特点
1	1.2543	面内扭转和侧向振动
2	2.4757	平面内扭转
3	3.2123	一阶侧向弯扭耦合振动
4	3.7030	一阶反对称竖向弯曲振动
5	4.9211	一阶对称竖向弯曲振动
6	5.8418	二阶反对称竖向弯曲振动
7	7.5409	反对称扭转振动
8	8.8701	二阶对称竖向弯曲振动
9	9.2572	一阶反对称竖向弯扭振动
10	9.5019	对称扭转振动

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曲线桥梁车桥耦合振动数值分析方法

Numerical analysis method of vehicle⁃bridge coupling vibration of curved bridge

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