Modified cracked membrane model for consistent crack width predictions of reinforced concrete structures subjected to in-plane loading

Journal article (2019)

Authors

Reignard Tan Norwegian University of Science and Technology (NTNU)
M.A.N. Hendriks Applied Mechanics - CEG , Norwegian University of Science and Technology (NTNU)
M. R. Geiker Norwegian University of Science and Technology (NTNU)
Terje Kanstad Norwegian University of Science and Technology (NTNU)
Research Group
Applied Mechanics (CEG) (TU Delft)
Copyright: © 2019 Reignard Tan, M.A.N. Hendriks, M. Geiker, T. Kanstad
DOI
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https://doi.org/10.1016/j.engstruct.2019.109362
In-plane loading Crack widths Tension stiffening Calculation model Crack spacing Modelling uncertainty RC membranes
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Published Date

2019

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Materials- Mechanics- Management & Design

Research Group

Applied Mechanics

Abstract

The modified cracked membrane model (MCMM) presented in this paper was formulated to facilitate a mechanical calculation model that predicts crack widths in reinforced concrete (RC) structures subjected to in-plane loading for all cracking stages. It was formulated using the basic concepts of the existing cracked membrane model (CMM). Furthermore, a generalized approach for predicting the tension stiffening normal to a crack was formulated, an approach currently lacking in Eurocode 2 and fib Model Code 2010. A simplified approach for predicting the cracking behaviour of RC membranes was also proposed. Comparison with a total of 101 maximum crack widths measured experimentally on 37 test specimen from the literature showed that the MCMM provided good and consistent crack width predictions even for the cases of large rebars and covers, at which the CMM was seen to struggle. The results in this paper suggests that both the MCMM and the simplified approach show great potential for yielding reliable crack width predictions in RC membranes.