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http://dx.doi.org/10.12989/sem.2009.33.6.765

Damage assessment of reinforced concrete beams including the load environment  

Zhu, X.Q. (School of Engineering, The University of Western Sydney, Kingswood Campus)
Law, S.S. (Civil and Structural Engineering Department, The Hong Kong Polytechnic University)
Hao, H. (School of Civil and Resource Engineering, The University of Western Australia)
Publication Information
Structural Engineering and Mechanics / v.33, no.6, 2009 , pp. 765-779 More about this Journal
Abstract
Quantitative condition assessment of structures has been traditionally using proof load test leading to an indication of the load-carrying capacity. Alternative approaches using ultrasonic, dynamics etc. are based on the unloaded state of the structure and anomalies may not be fully mobilized in the load resisting path and thus their effects are not fully included in the measured responses. This paper studies the effect of the load carried by a reinforced concrete beam on the assessment result of the crack damage. This assessment can only be performed with an approach based on static measurement. The crack damage is modelled as a crack zone over an area of high tensile stress of the member, and it is represented by a damage function for the simulation study. An existing nonlinear optimization algorithm is adopted. The identified damage extent from a selected high level load and a low load level are compared, and it is concluded that accurate assessment can only be obtained at a load level close to the one that creates the damage.
Keywords
reinforced concrete; beam; damage; assessment; inverse problem; finite element; crack; static load; deflection;
Citations & Related Records

Times Cited By Web Of Science : 4  (Related Records In Web of Science)
Times Cited By SCOPUS : 3
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1 Banan, M.R. and Hjelmstad, K.D. (1994), "Parameter estimation of structures from static response. I. Computational aspects", J. Struct. Eng., ASCE, 120(11), 3243-3258   DOI   ScienceOn
2 Cerri, M.N. and Vestroni, F. (2000) "Detection of damage in beams subjected to diffused cracking", J. Sound Vib., 234(2), 259-276   DOI   ScienceOn
3 Goldfarb, D. and Idnani, A. (1983), "A numerically stable dual method for solving strictly convex quadratic problems", Math. Program., 27, 1-33   DOI   ScienceOn
4 Law, S.S., Ward, H.S., Shi, G.B., Chen, R.Z., Waldron, P. and Taylor, C. (1995), "Dynamic assessment of bridge load carrying capacities –II", J. Struct. Eng., ASCE, 121(3), 488-495   DOI   ScienceOn
5 Maeck, J., Abdel Wahab, M., Peeters, B., De Roeck, G., De Visscher, J., De Wilde, W.P., Ndambi, J.-M. and Vantomme, J. (2000) "Damage identification in reinforced concrete structures by dynamic stiffness determination", Eng. Struct., 22(10), 1339-1349   DOI   ScienceOn
6 Wahab, M.M., De Roeck, G. and Peeters, B. (1999), "Parameterization of damage in reinforced concrete structures using model updating", J. Sound Vib., 228(4), 717-730   DOI   ScienceOn
7 Wang, X., Hu, N., Fukunaga, H. and Yao, Z.H. (2001), "Structural damage identification using static test data and changes in frequencies", Eng. Struct., 23, 610-621   DOI   ScienceOn