Numerical Simulation of Impact-Echo Method Identify the Depth of Honeycomb Damage in Unballasted Track

Abstract:

Through the honeycomb damage that is appear in unballasted track will affect the safe operation of high-speed train, accurate detection of honeycomb damage is very important. Impact-echo method is a non-destructive testing method. Based on the principle of impact echo, author using the finite element software ANSYS LS-DYNA3D to simulate the impact-echo, testing and verifying the feasibility and accuracy of impact-echo method in discerning unballasted track damage. By analyzing the calculated result of honeycomb damage in slab track and double-block ballastless track, it is shows that: according to back calculate the depth of damage base on the peak value in acceleration spectrum graph, the honeycomb damage in different depth can be accurate located.

• Periodical: Applied Mechanics and Materials (Volumes 584-586)
• Pages: 2060-2067
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.584-586.2060
• Online since: July 2014
• Authors: Chang Sheng Zhou*, Ping Wang, Zhi Peng Hu, Hao Zhu
• Keywords: Double-Block Ballastless Track, Honeycomb Damage, Impact Echo, Slab Ballastless Track

References

[1] Xianglong Wei, Zhihui Zhang. Major diseases (defects) analysis and non-destructive testing in unballasted track of high speed railway[J], Railway Standard Design, 2011(3): 38-40(In Chinese).

[2] Xueyi Liu, Pingrui Zhao, Rongshan Yang, Ping Wang. Ballastless track design theory and methods[M], Publishing House of Southwest Jiaotong University, 2010, 56-85(In Chinese).

[3] Ziqing Jiang, Cheng Jiang, Jijun Wang, Zhonglai Yi. Study of flaw remediation in mortar layer of type CRTSⅡslab unballasted track. [J], Railway Construction, 2013(1): 118-120(In Chinese).

[4] Li Wan, Xiaojian Han, Etc. Experimental study on the impact-echo method to identify defects in concrete[J], Concrete, 2012(2): 8-10(In Chinese).

[5] Chunjiang Zou, Zhengzhou Cheng, Etc. Response and application of the impact echo frequency in the grouting full degree of box girder prestressed duct[J], Highway and Transportation Science and Technology, 2010, 27(1): 72-77.

[6] Xianliang Tan, Jianping Wang. Quality research technology of detection of prestressed pore filling with impact-echo method[J]. Railway Construction, 2010(8): 49-51.

[7] Yiching Lin, Mary Sansalone, Nicholas J. Carino, Finite Element Studies of the Impact-Echo Response of Plates Containing Thin Layers and Voids[J], Journal of Nondestructive Evaluation, 1990: 28-35.

DOI: 10.1007/bf00566980

[8] Mary Sansalone, Carino N J. Impact-echo: A Method for flaw detection in concrete using transient stress waves[M]. USA: National Bureau or Standards, 1986: 222.

DOI: 10.6028/nbs.ir.86-3452

[9] Hua Yao. The model test study of injury detection of post-tensioned pipeline with scan type impact-echo method[D], Chengdu: Publishing House of Southwest Jiaotong University, 2008: 9-15(In Chinese).

[10] Yunwang Wu. Numerical simulation of stress wave reflection method analysis and practical research[D], Shanghai: Tongji University, 2007. 9-14.

[11] Zhifu Wang. Simulation analysis of vibration source characteristic of low strain reflected wave method[D], Chengdu: Southwest Jiaotong University, 2010: 15-22.