[1]刘焕举,韩鹤翔,黄平明,等.基于车-桥耦合振动的桥梁加固效果分析[J].深圳大学学报理工版,2018,35(No.1(001-110)):55-61.[doi:10.3724/SP.J.1249.2018.01055]
 LIU Huanju,HAN Hexiang,HUANG Pingming,et al.Evaluation of the bridge reinforcement effect based on vehicle-bridge coupling vibration[J].Journal of Shenzhen University Science and Engineering,2018,35(No.1(001-110)):55-61.[doi:10.3724/SP.J.1249.2018.01055]
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基于车-桥耦合振动的桥梁加固效果分析()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第35卷
期数:
2018年No.1(001-110)
页码:
55-61
栏目:
土木建筑工程
出版日期:
2018-01-12

文章信息/Info

Title:
Evaluation of the bridge reinforcement effect based on vehicle-bridge coupling vibration
文章编号:
201801009
作者:
刘焕举韩鹤翔黄平明吴松
长安大学公路学院,旧桥检测与加固技术交通行业重点实验室,陕西西安 710064
Author(s):
LIU Huanju HAN Hexiang HUANG Pingming and WU Song
Highway College, Key Laboratory of Bridge Detection Reinforcement Technology Ministry of Communication, Chang’an University, Xi’an 710064, Shaanxi Province, P.R.China
关键词:
桥梁工程加固效果评价车桥耦合可视化加速度冲击系数
Keywords:
bridge engineering reinforcement effect evaluation vehicle-bridge coupling visualization acceleration impact factor
分类号:
U 441+3;U 442
DOI:
10.3724/SP.J.1249.2018.01055
文献标志码:
A
摘要:
针对当前桥梁加固效果的评价方法仅在静力条件下引入车辆荷载动力放大系数,未考虑车-桥耦合的不足,编制车-桥耦合振动分析模块,对加固效果进行分析.引入典型车辆运动方程和多梁式车-桥耦合关系,建立梁格法车-桥耦合振动系统,并实现动态可视化.以一座采用增大截面法加固的刚架拱桥为工程实例,建立桥梁加固模型,考虑车-桥耦合,建立分析模块,从各主肋位移及弯矩响应、冲击系数和车-桥系统加速度等方面对加固效果进行分析.结果表明,加固后结构的刚度有大幅提升,结构的自重也有所增大;加固后结构刚度增大对冲击系数值影响不明显;路况好时,冲击系数规范值适用,路况差时,冲击系数波动较大,规范值不适用;在车-桥系统加速度方面,加固过程增加了桥梁结构刚度,使得桥梁跨中竖向加速度大幅减小,但对车辆质心加速度变化作用不明显.
Abstract:
The current evaluation method for the bridge reinforcement effect only includes the dynamic amplification factor of the vehicle load under static condition and ignores vehicle-bridge coupling. Aiming at the shortage, the vehicle bridge coupling vibration analysis module was developed, and the reinforcement effect was analyzed. Firstly, the typical vehicle motion equation and vehicle-multi beam bridge coupling were introduced. The vehicle-bridge coupling vibration system of grillage method was established, and the dynamic visualization was realized. Secondly, a rigid frame arch bridge strengthened by enlarged section was taken as an example. The bridge reinforcement model was established, and the vehicle-bridge coupling was taken into consideration. The reinforcement effect was analyzed in three aspects as the displacement and bending moment of the main ribs, the impact coefficient and the acceleration of the vehicle-bridge system. The results show that the stiffness of the structure is improved and the structure load is also increased after reinforcement; the influence of the increased structural stiffness after reinforcement on the impact factor is not obvious; the standard value of impact factor is applicable for good road condition, while the impact factor fluctuates greatly and thus is not applicable for poor road condition; in the aspect of the acceleration of vehicle-bridge system, the strengthening process increases the rigidity of bridge structure, which makes the vertical acceleration at middle span decrease greatly, but has little effect on the acceleration of vehicle mass center.

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备注/Memo

备注/Memo:
Received:2017-04-18;Accepted:2017-09-13
Foundation:National Natural Science Foundation of China (51278064); Fundamental Research Funds for the Central Universities (310821162008)
Corresponding author:Professor HUANG Pingming.E-mail: hpming@vip.sina.com
Citation:LIU Huanju, HAN Hexiang, HUANG Pingming, et al.Evaluation of the bridge reinforcement effect based on vehicle-bridge coupling vibration[J]. Journal of Shenzhen University Science and Engineering, 2018, 35(1): 55-61.(in Chinese)
基金项目:国家自然科学基金资助项目(51278064);中央高校基本科研业务费资助项目(310821162008)
作者简介:刘焕举(1987—),男,长安大学博士研究生.研究方向:风-车-桥耦合振动.E-mail:huanjull@163.com
引文:刘焕举,韩鹤翔,黄平明,等.基于车-桥耦合振动的桥梁加固效果分析[J]. 深圳大学学报理工版,2018,35(1):55-61.
更新日期/Last Update: 2017-12-22