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Open AccessArticle

Experimental and Numerical Study on Mechanical Analysis of Buried Corroded Concrete Pipes under Static Traffic Loads

by Hongyuan Fang 1,2,3,4, Kangjian Yang 1,2,3,*, Bin Li 1,2,3, Peiling Tan 1,2,3, Fu Wang 1,2,3 and Xueming Du 1,2,3,*
School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou 450001, China
National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou 450001, China
Collaborative Innovation Center of Water Conservancy and Transportation Infrastructure Safety, Zhengzhou 450001, China
Southern Engineering Inspection and Restoration Technology Research Institute, Huizhou 516029, China
Authors to whom correspondence should be addressed.
Appl. Sci. 2019, 9(23), 5002;
Received: 23 October 2019 / Revised: 11 November 2019 / Accepted: 16 November 2019 / Published: 20 November 2019
(This article belongs to the Section Mechanical Engineering)
Concrete pipes are widely used in municipal drainage projects. Corrosion is a common issue affecting concrete pipes, causing leakage of pipes, environmental pollution, and road collapse. It is necessary to study the mechanical properties of corroded concrete pipes. To investigate in depth the influence of corrosion depths, corrosion widths, traffic loads, and cover depths, on mechanical characteristics of buried corroded concrete pipes under static traffic loads, a series of full-scale tests were carried out. Then, a three-dimensional finite element model of buried corroded concrete pipes under traffic loads is established based on ABAQUS. Results showed that the inside of the pipe wall is more vulnerable to damage than the outside. The stress and strain of a corroded pipe is significantly larger than that of an uncorroded pipeline. The corrosion has a great influence on the stress and strain of the corroded area. The maximum principal stress and circumferential strain at corroded area increase with increasing of corrosion depth. The stress and strain first increases rapidly (0–10°), and then decreases rapidly (10–45°), then finally decreases slowly (45–180°) with an increase of corrosion width. In addition, the greater cover depth or increasing traffic load causes a rapid increase in both circumferential strain and the maximum principal stress. View Full-Text
Keywords: concrete pipe; corrosion; mechanical characteristics; traffic loads concrete pipe; corrosion; mechanical characteristics; traffic loads
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MDPI and ACS Style

Fang, H.; Yang, K.; Li, B.; Tan, P.; Wang, F.; Du, X. Experimental and Numerical Study on Mechanical Analysis of Buried Corroded Concrete Pipes under Static Traffic Loads. Appl. Sci. 2019, 9, 5002.

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