RESEARCH ARTICLE


Monitoring Methods of Crack Behavior in Hydraulic Concrete Structure Based on Crack Mouth Opening Displacement (CMOD)



Zhong-Yan Huo*, Guang-Xuan Qian, Dong-Jian Zheng
1 College of Port and Waterway Engineering, University, Zhejiang Ocean University, Zhoushan, Zhejiang, 316000, China
2 Changjiang River Scientific Research Institute Engineering Safety And Disaster Prevention Scientific, Wuhan, 430010
3 Environmental Health Management Office of Dinghai District, Zhoushan, Zhejiang,316000,China


Article Metrics

CrossRef Citations:
1
Total Statistics:

Full-Text HTML Views: 302
Abstract HTML Views: 249
PDF Downloads: 155
Total Views/Downloads: 706
Unique Statistics:

Full-Text HTML Views: 218
Abstract HTML Views: 182
PDF Downloads: 142
Total Views/Downloads: 542



Creative Commons License
© 2014 Huo et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at Changzhou Road, Zhoushan, Zhejiang, China. Postcard: 316000; Tel: + 86 188570931601; Fax: +86 05802550401; E-mail: hhuhzy@yahoo.com


Abstract

For the difficulty of applying classical fracture criteria to the actual hydraulic engineering and silulating the process of cracking by conditional FEM, in this paper, a new method of analyzing and monitoring crack behavior in hydraulic structures under the effect of Hydro-Mechanical (HM) interaction is studied by using the XFEM, in which crack mouth opening displacement (CMOD) is adopted as monitoring index. The core innovation done in this study is that a method of determining macro crack tip is proposed based on cohesive force for the first time, and the critical value of CTOD is investigated and proved to be a material parameter. it is verified by comparing with the concrete tests and numerical calculations of former related literatures. All of the above shows that the present monitoring method based on CMOD provides a practical way to simulate cracking in hydraulic concrete structures.

Keywords: CMOD, cohesive crack, hydraulic concrete, monitoring method, XFEM.