Research Article | OPEN ACCESS
Analysis of Cracking Mode of Anchor Structure of Underground Engineering Induced by Reinforcement Corrosion
1Wantao Ding and 2Jinhui Liu
1Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, China
2Department of Civil Engineering, Shandong Jiaotong University, Jinan 250023, China
Research Journal of Applied Sciences, Engineering and Technology 2014 5:1033-1039
Received: February 02, 2013 | Accepted: March 08, 2013 | Published: February 05, 2014
Abstract
Based on elastic theory and assumption of maximum tensile-stress failure criterion, together with construction process of anchor structure and rust expansion critical process, this study proposed a simplified reinforcement rust expansion mechanical model of anchor structure system. Elastic criterion of different initial cracking mode was rewarded under different stress ratios. According to analysis of critical cracking mode of different medium, cracking order of mortar and surrounding rock depended on their material parameters, in-situ stress and thickness of mortar cover. Critical cracking conditions of different medium without effect of in-situ stress was the same as that of considering in-situ stress while k is equal to 3 or 1/3. And engineering example shows that three different cracking modes exist under different stress ratios. The result provides a useful reference for analysis of mechanical deterioration mechanism of anchor structure and design of support structure of underground engineering.
Keywords:
Anchor structure system, critical cracking mode, elastic theory, maximum tensile-stress failure criterion, reinforcement corrosion,
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Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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The authors have no competing interests.
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