吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (6): 1744-1752.doi: 10.13229/j.cnki.jdxbgxb201706010

• 论文 • 上一篇    下一篇

车辆作用下钢-混凝土组合简支梁动力特性

魏志刚1, 2, 时成林1, 3, 刘寒冰1, 张云龙4   

  1. 1.吉林大学 交通学院,长春 130022;
    2.吉林省高等级公路建设局,长春 130033;
    3.吉林省交通科学研究所 科研开发中心,长春 130012;
    4.吉林建筑大学 交通科学与工程学院,长春 130118
  • 收稿日期:2017-01-05 出版日期:2017-11-20 发布日期:2017-11-20
  • 通讯作者: 张云龙(1975-),男,副教授,博士.研究方向:桥梁检测与加固.E-mail:zhangyunlong@jlju.edu.cn
  • 作者简介:魏志刚(1977-),男,高级工程师,博士研究生.研究方向:桥梁检测与加固.E-mail:wzg770718@163.com
  • 基金资助:
    国家自然科学基金面上项目(51478203)

Dynamic characteristics of steel-concrete composite simply supported beam under vehicles

WEI Zhi-gang1, 2, SHI Cheng-lin1, 3, LIU Han-bing1, ZHANG Yun-long4   

  1. 1.College of Transportation,Jilin University,Changchun 130022, China;
    2.Jilin Provincial High Class Highway Construction Bureau, Changchun 130033, China;
    3.Scientific Research and Development Center, Jilin Provincial Transport Scientific Research Institute, Changchun 130012, China;
    4.School of Transportation Science & Engineering, Jilin Jianzhu University, Changchun 130118, China
  • Received:2017-01-05 Online:2017-11-20 Published:2017-11-20

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摘要： 首先,在考虑组合梁结合面剪切滑移效应的情况下,推导了车辆作用下钢-混组合梁的刚度分布函数。然后,采用待定系数表达组合梁和车辆的振动位移函数。进而基于矩阵传递法的基本思想,根据变形协调及力的平衡条件,建立了以待定系数表达的整个车-组合梁振动系统的振动方程,根据该振动方程可以计算出车辆作用下钢-混凝土简支梁的自振频率和振型。最后,采用有限元方法验证了本文方法的有效性和可靠性。

关键词: 桥梁工程, 动力特性, 钢-混凝土组合梁桥, 剪切滑移

Abstract: In this paper, first, the stiffness distribution function of steel-concrete composite beam under vehicles is derived, in which the effect of share slip of the composite beam is considered. Then, the undetermined coefficients are used to express the vibration functions of the composite beam and the vehicles. Further, based on the matrix transfer method, the vibration equation of the vehicle-beam vibration system expressed by the undetermined coefficients is established using the deformation compatibility and the force equilibrium condition. The natural frequencies and mode shapes of the steel-concrete simply supported beam under vehicles can be calculated by this vibration equation. Finally, the validity and reliability of the presented method are verified by finite element method.

Key words: bridge engineering, dynamic characteristics, steel-concrete composite beam, shear slip

中图分类号: 

  • TU311
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