Factor Identification of Categorical Type Related to the Structural Condition of Bogota’s Sewage Pipelines Stemming from Concepts of the Information’s Entropy
Introduction: this article is the result of the research project “Factor identification of categorical type related to the structural condition of Bogota’s sewage pipelines stemming from concepts of information’s entropy” financed by the Mastery in Hydro-systems of the Pontifical University Javeriana and developed in 2014 and 2015. The objective was to identify the influence of factors of qualitative type (grid type, material of the associated road surface and material of the pipeline) on the structural grade obtained from CCTV inspections in Bogota during 2007 and 2011.
Methodology: the entropy’s concept of mutual information was studied to differentiate the following categorical variables: type of pipelines, type of road surface over the pipeline and materials of the pipeline.
Results: obtained from the application of concepts like entropy and mutual information show that the structural classification is independent from the type of pipeline, since they present elevated values of joined entropy and imply a high degree of uncertainty in their relation.
Conclusions: the categorical variables studied are important factors to account in an impairment model of sewage pipelines; they also provide decision-making to direct the inspection plans of sewage in the city.
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B. C. Ferguson, R. R. Brown y A. Deletic, “Diagno-sing transformative change in urban water systems: Theories and frameworks, Global Environmental Change”, vol. 23, n.o 1, feb. 2013, pp. 264-280.
H. Osman, “Agent-based simulation of urban infras-tructure asset management activities, Automation in Construction”, vol. 28, pp. 45-57, dic. 2012.
B. Ward y D. A. Savić, “A multi-objective optimi-sation model for sewer rehabilitation considering critical risk of failure”, Water Sci Technol, vol. 66, n.o11, pp. 2410-2417, 2012. doi: 10.2166/wst.2012.393
T. Micevski, G. Kuczera y P. Coombes, “Markov Mo-del for Storm Water Pipe Deterioration”, J. Infrastruct. Syst., vol. 8, n.o 2, pp. 49-56, jun. 2002. doi: http://dx.doi.org/10.1061/(ASCE)1076-0342(2002)8:2(49)
Z. Liu y Y. Kleiner, “State of the art review of inspection technologies for condition assessment of water pipes”, Measurement, vol. 46, n.o 1, ene. 2013, pp. 1-15. doi: http://dx.doi.org/10.1016/j.measure-ment.2012.05.032
J. P. Davis, B. A. Clarke, J. T. Whiter y R. J Cunnin-ghan, “Factors influencing the structural deterioration and collage of rigid sewer pipes”, Urban water, vol. 3, n.o 1, pp. 73-89, 2001. doi: http://dx.doi.org/10.1016/ S1462-0758(01)00017-6
M. Kleidorfer, M. Moderl, F. Tscheirker-Gratl, M. Hammerer, H. Kinzel y Rauch W, “Integrated plan-ning of rehabilitation strategies for sewers”, Water Science & Technology, vol. 68, n.o 1, pp. 173-183, 2013. doi: 10.2166
T. Hao et al., “Condition assesment of the buried uti-lity service infraestructure”, Tunneling and Underground Space technology, n.o 28, pp. 331-344, 2012.
J. Lee, Y. Jeong Y-S. Oh, J-C. Lee, N. Ahn, J. Lee y S-H. Yoon, “An integrated approach to intelligent urban facilities management for real-time emer-gency response”, Automation in Construction, vol. 30, pp. 256-264, mar. 2013. doi: http://dx.doi.or-g/10.1016/j.autcon.2012.11.008
H-S. Baik, H. S. D. Jeong y D. M. Abraham, “Estima-ting Transition Probabilities in Markov Chain-Based Deterioration Models for Management of Wastewa-ter Systems”, J. Water Resour. Plann. Manage, vol. 132, n.o 1, pp. 15-24, ene. 2006. doi: http://dx.doi.org/10.1061/(ASCE)0733-9496 (2006)132:1(15)
R. Wirahadikusumah, D. Abraham y T. Iseley, “Cha-llenging issues in modelling deterioration of combined sewers” Journal of Infrastructure Systems, vol. 7, n.o 2, pp. 77-84, jun. 2001. doi: http://dx.doi.org/10.1061/ (ASCE)1076-0342(2001)7:2(77)
B. Salman y O. Salem, “Modeling failure of wastewa-ter collection lines using various section-level regres-sion models”, Journal of Infrastructure Systems, vol. 18, n.o 2, pp. 146-154. doi: http://dx.doi.org/10.1061/ (ASCE)IS.1943-555X.0000075
J. Mashford, D. Marlow, D. Tran y R. May, “Pre-diction of Sewer Condition Grade Using Support Vector Machines”, Journal of Computing in Civil En-gineering, vol. 25, n.o 4, pp. 283-290, jul. 2011.
P. Davis, I. Martin, R. Gopirajy y J. Hicks, “Review of condition assessment techniques and decision frameworks for gravity sewers”, 8th International Conference on Sewer Process and Networks Surfers Paradise, Gold Coast, Australia, 7-10 nov., 2010.
R. Schilperoort, E. Rudelle, J. Vollertsen, H. Hoppe, A. Lausten, U. Laschet, M. Uggerby y J. Langeveld, “cctvvs. dts: Comparison of Results in the Search for Infil-tration and Inflow”, 13th International Conference of Urban Drainage, Sarawak, Mlaysia, 7-12 sep. 2014.
J. P. Rodríguez, N. McIntyre, M. Díaz-Granados, J. P. Quijano, y Č. Maksimović, “Monitoring and mo-delling to support wastewater system management in developing mega-cities”, Science of the Total En-vironment, vol. 445, pp. 79-93, feb. 2013. doi: http://dx.doi.org/10.1016/ j.scitotenv.2012.12.022
Empresa de Acueducto y Alcantarillado de Bogotá (eaab). “NS – 058. Aspectos Técnicos para inspección y mantenimiento de redes y estructuras de alcantarillado”, Bogotá, Colombia, eaab-e.s.p., 2001.
P. Niño, H. Angarita, D. Vargas y A. Torres, “Identificación factores de riesgo para la gestión patrimonial óptima de sistemas de drenaje urbano: Estudio Piloto en la Ciudad de Bogotá”, xxv Congreso Latinoamericano de Hidráulica, San José, Costa Rica, 9-12 sep. 2012
A. Torres, S. Sandoval, K. Navarro y L. Pulido, “Strategies of maintenance in storm sewers in Bo-gotá Colombia by using estimates of operational and flooding reliabilities”, en Proceedings of the 12th International Conference on Urban Drainage, Porto Alegre, Brazil, sept. 2011, p. 9.
S. Sandoval, A. Torres, y N. Obregón, “Herramientas para la implementación de mantenimiento proactivo en alcantarillados urbanos utilizando confiabilidad de inundación y conceptos de entropía de información”, Rev. Facultad de Ingeniería Universidad de Antioquia, n.o 65, pp.152-166, 2012.
R. M. Gray, Entropy and information theory. Stanford, USA: Springer Science & Business Media, 2011. doi: http://dx.doi.org/10.1007/978-1-4419-7970-4
T. M. Cover y J. A. Thomas, Elements of information theory, New Jersey, USA: John Wiley & Sons, 2012.
