Abstract
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Article Information:
Analysis of Cracking Mode of Anchor Structure of Underground Engineering Induced by Reinforcement Corrosion
Wantao Ding and Jinhui Liu
Corresponding Author: Wantao Ding
Submitted: February 02, 2013
Accepted: March 08, 2013
Published: February 05, 2014 |
Abstract:
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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.
Key words: Anchor structure system, critical cracking mode, elastic theory, maximum tensile-stress failure criterion, reinforcement corrosion, ,
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Cite this Reference:
Wantao Ding and Jinhui Liu, . Analysis of Cracking Mode of Anchor Structure of Underground Engineering Induced by Reinforcement Corrosion. Research Journal of Applied Sciences, Engineering and Technology, (5): 1033-1039.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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