Etiqueta: MCDM

Toma de decisiones multicriterio en el análisis sostenible del ciclo de vida de los puentes

Acaban de publicarnos un artículo en la revista Journal of Civil Engineering and Management, indexada en Q2 del JCR. Se trata de una revisión del estado del arte sobre la toma de decisiones multicriterio en el análisis sostenible del ciclo de vida de los puentes.

El trabajo se enmarca en el proyecto de investigación DIMALIFE, que dirijo como investigador principal en la Universitat Politècnica de València.

El diseño sostenible de las infraestructuras se ha convertido en un tema de estudio importante desde el reciente establecimiento de la Agenda 2030. En este artículo se ofrece una revisión sistemática de la bibliografía sobre el uso de técnicas de toma de decisiones basadas en criterios múltiples aplicadas hasta ahora al proyecto sostenible de puentes. También se presta especial atención a la forma en que los estudios evalúan el comportamiento sostenible de los diseños de los puentes a lo largo de su ciclo de vida desde las perspectivas económicas, ambientales y sociales. Aunque SAW y AHP se utilizan de manera recurrente en la evaluación sostenible de los puentes, el análisis de los artículos más recientes muestra que la aplicación de las técnicas TOPSIS y PROMETHEE está cobrando cada vez más relevancia para tal fin. La mayoría de los estudios se centran en la investigación sobre la construcción y la etapa de mantenimiento de los puentes. Sin embargo, se identifica la necesidad de un análisis más profundo cuando se trata de evaluar los impactos resultantes de la etapa del fin del ciclo vital de los puentes desde un punto de vista sostenible. Se ha detectado el uso de la lógica intuitiva y neutrosófica como alternativas emergentes al enfoque difuso de los problemas de toma de decisiones.

ABSTRACT

Sustainable infrastructure design has become a major area of study since the recent establishment of the Agenda 2030. This paper provides a systematic literature review of the use of multi-criteria decision-making techniques for the sustainable design of bridges. Special attention is also given to how the reviewed studies assess the sustainable performance of bridge designs throughout their life cycles from economic, environmental, and social perspectives. Although SAW and AHP are frequently used in the sustainable assessment of bridges, the analysis of recent articles shows that the application of TOPSIS and PROMETHEE techniques is gaining increasing relevance for this purpose. Most studies focus on the construction and maintenance stages of bridges. However, a need for further analysis is identified in assessing the impacts of bridges’ end-of-life cycle stage from a sustainable perspective. The use of intuitionistic and neutrosophic logic has been detected as an emerging alternative to the fuzzy approach of decision-making problems.

KEYWORDS:

Decision-making, sustainability, bridge design, state-of-the-art, MCDM, life-cycle assessment.

REFERENCE:

NAVARRO, I.J.; PENADÉS-PLÀ, V.; MARTÍNEZ-MUÑOZ, D.; REMPLING, R.; YEPES, V. (2020). Life cycle sustainability assessment for multi-criteria decision making in bridge design: A review. Journal of Civil Engineering and Management, 26(7):690-704. DOI:10.3846/jcem.2020.13598

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Study of criteria used to obtain a sustainable bridge

Abstract. The sustainable development of bridges is mainly based on meeting the three pillars of sustainability (economic, social and environmental factors) which have different goals. Each main criterion groups a large number of subcritera. Therefore, achieve a sustainable bridge is a complicate problem that involves a high number of factors in each stage of bridge life-cycle. For this reason, decision-making is a helpful process to solve the sustainability problem. The objective of this work is to review the bridge life-cycle decision-making problems that involve criteria that represent the pillars of the sustainability. While some works only consider criteria related to one or two of these pillars, the most current works consider criteria that involve all the pillars of sustainability. Furthermore, most of the works reviewed only study one stage of bridge life-cycle. This study shows the criteria used in some revised journal articles in each bridge life-cycle phase and, the multi-attribute decision-making used to achieve the sustainability. In addition, a small explanation of the obtained information will be carried out.

Keywords: Multi-criteria, Life-cycle, Decision-making, MCDM, MADM

Reference:

PENADÉS, V.; YEPES, V.; GARCÍA-SEGURA, T.; MARTÍ, J.V. (2017). Study of criteria used to obtain a sustainable bridge. Proceedings of the Ninth International Structural Engineering and Construction Conference, Valencia, Spain, July 24-July 29.    doi: 10.14455/ISEC.res.2017.177

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Indicators for Serviceability for Low-Carbon Building Slab Types

ForjadoMulti-storey and high-rise buildings use a significant amount of carbon-intensive materials in their structure and in their slab floors. The latter are the focus of this paper. Not only structural efficiency and construction costs need to be considered, but also energy efficiency, emissions, resource extraction and building flexibility over time. In addition to functionality, slab floor components can respond to resource depletion and GHG minimisation while ensuring cost effectiveness. As there is no single solution for an optimal slab type, we provide a set of criteria and sub-criteria. Accordingly, a multi-criteria decision matrix is required to select the best choice. A group of experts will rank and validate the proposed structure to know how relevant each is to the decision maker.

Reference:

MOLINA-MORENO, F.; YEPES, V. (2016). Indicators for Serviceability for Low-Carbon Building Slab Types. IABSE Conference — Structural Engineering: Providing Solutions to Global Challenges, September 23-25, 2015, Geneva, Switzerland, pp. 178-185.

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