Analysis of crack spacing in reinforced concrete by a lattice model

Chen, G. and Baker, Graham (2004) Analysis of crack spacing in reinforced concrete by a lattice model. Advances in Structural Engineering, 7 (2). pp. 179-188. ISSN 1369-4332

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A new numerical method is proposed for prediction of crack spacing in reinforced concrete. It is assumed that the deformation pattern of crack spacing consumes the least energy among all kinematically admissible deformations, and the energy minimization approach is applied to predict crack spacing. To simplify the problem, a lattice model is used, in which the cracking process is represented by softening of the concrete bar elements. The crack spacing due to tension and bending is investigated. The results confirm that crack spacing can be predicted by energy minimization. To account for the influence of the bond slip between the concrete and the reinforcing steel, the traditional bond-link element is employed. The influence of the bond slip on the cracking pattern is studied through numerical examples. The results show that without considering bond-slip, the damage near the reinforcement is distributed rather than localized, whereas considering bond-slip, the damage near the reinforcement is localized. The influence of bond slip on crack spacing is significant.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Electronic version unavailable.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 06 May 2010 07:38
Last Modified: 16 Nov 2011 04:38
Uncontrolled Keywords: bond-slip; crack spacing; energy minimization; lattice model; reinforced concrete
Fields of Research : 01 Mathematical Sciences > 0103 Numerical and Computational Mathematics > 010301 Numerical Analysis
09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
Socio-Economic Objective: B Economic Development > 87 Construction > 8703 Construction Materials Performance and Processes > 870301 Cement and Concrete Materials
Identification Number or DOI: 10.1260/1369433041211084

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