Model Tests on Structural Damage Detection of Railway Piers

PDF(1986 KB)

Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (14) : 188-194.

YAN Yu-zhi , ZHAN Jia-wang ,ZHANG Nan, XIA He

Author information +

History +

Abstract

A model pier is erected in the laboratory in which damage of foundation is simulated by changing the base constraint springs and multiple mass units are used to simulate the superstructure mass. The model is mainly used to simulate the railway low-height piers. The influence of base constraint, beam mass and lateral pier-top constraint on the dynamic parameters of piers is analyzed by model tests. The optimization algorithm is used to identify damage of model pier with measured mode shapes and nature frequencies as input data. The analysis results indicate that the influence of constraints on the pier top due to track and supports cannot be neglected especially for double-track bridges. The modal frequency and mode shape are sensitive to the condition changes of beam mass, pier-top constraints and base stiffness. Using modal parameters as objective indexes, damage in piers can be located and quantitatively identified by the FE model updating technique.

Key words

Railway pier / model test / damage detection / FE model updating technique

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

YAN Yu-zhi,ZHAN Jia-wang,ZHANG Nan, XIA He . Model Tests on Structural Damage Detection of Railway Piers[J]. Journal of Vibration and Shock, 2016, 35(14): 188-194

References

[1] Ricardo Perera, Antonio Ruiz. A multistage FE updating procedure for damage identification in large-scale structures based on multi objective evolutionary optimization[J]. Mechanical Systems and Signal Processing,2008,22:970-991.
[2] Ling Yu, Tao Yin. Damage identification in frame structures based on FE model updating[J]. Journal of Vibration and Acoustics,2010,132:1-13.
[3] Usik Lee, Jinho Shin. A frequency response function-based structural damage identification method[J]. Computers and Sturctures,2002,80:117-132.
[4] 宗周红，褚服鹏，牛杰.基于响应面模型修正的桥梁结构损伤识别方法[J].土木工程学报，2013,46(2):115-122.
ZONG Zhouhong, CHU Fupeng, NIU Jie. Damage identification methods of bridge structures using response surface based on finite element model updating [J]. China Civil Engineering Journal, 2013,46(2):115-122.
[5] 葛继平，王志强，王红伟.振动台试验过程中基于加速度响应的动力特性识别[J].武汉理工大学学报(交通科学与工程板)，2012,36(6):1105-1108.
GE Jiping, WANG Zhiqiang, WANG Hongwei. Dynamic property identification based on acceleration response in the shake table test [J]. Journal of Wuhan University of Technology(Transportation Science & Engineering),2012,36
(6):1105-1108.
[6] 安志刚.基于动力参数的铁路桥墩损伤识别方法研究[D].北京，北京交通大学，2014.
AN Zhigang. Study on damage identification method for railway piers based on dynamic parameters [D].Beijing. Beijing jiaotong University, 2014.
[7] 中华人民共和国铁道部. 铁路桥梁检定规范[S].北京：中国铁道出版社，2004:135-139.
The ministry of railways of the People’s Republic of China. Code for rating existing railway bridges[S]. Beijing: China Railway Publishing House,2004:135-139(in Chinese).
[8] 周海林,王星华. 桥墩病害动力测试分析[J]. 中国铁道科学, 2001, 22(5):128-132.
ZHOU Hailin, WANG Xinhua. Analysis of the pier damage by dynamic experiment [J]. China Railway Science, 2001, 22(5): 128-132.
[9] 陈新中，周宏业.铁路桥墩病害振动诊断方法的研究[J].中国铁道科学，1987,8(1):20-33.
CHEN Xinzhong, ZHOU Hongye. The research on the vibration diagnostic method of railway bridge pier’s faults[J]. China Railway Science, 1987,8(1):20-33.
[10] 战家旺. 既有铁路桥墩健全度评估和试验方法研究[D]. 北京, 北京交通大学, 2006.
ZHAN Jiawang. Soundness evaluation and experiment method studies on existing railway piers [D].Beijing. Beijing jiaotong University, 2006.
[11] 冷伍明，何群，徐林荣，等.铁路桥梁群桩基础桥墩自振频率计算分析和应用研究[J].铁道学报，1999,21(4):72-76.
LENG Wuming, HE Qun, XU Linrong, et al. Study on natural frequence of bridge pier supported by group pile foundation
[J]. Journal of the China Railway Society,1999,21(4):72-76.