Minimum Formwork Stock problem on residential buildings construction sites

Benoist, Thierry; Jeanjean, Antoine; Molin, Pascal

doi:10.1007/s10288-008-0092-6

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…En cuanto al uso de CP para resolver los problemas relacionados con el encofrado, en [18] los autores presentan el problema del emparejamiento de encofrados (FPP), probando que este es un problema NP-duro y plantean un método de solución que relaja restricciones para poder encontrar soluciones óptimas en el 50 % de los casos estudiados; y en [19] los autores abordan otro interesante problema, que es el de determinar cuál es el inventario mínimo de materiales de encofrado que una obra de construcción requiere. Este es otro problema NP-duro.…”

Section: El Diseño De Encofrados En La Industriaunclassified

Diseño del encofrado para muros usando encofrados modulares

Martínez

Díaz

Duque

2019

TecnoL.

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El concreto u hormigón es uno de los materiales más versátiles usados en la construcción. En la actualidad, se usa extensivamente en la industria, ya que puede ser moldeado de formas casi arbitrarias a través de moldes rígidos denominados encofrados. La manera en que se disponen los distintos elementos para formar el encofrado y las restricciones asociadas, genera retos computacionales interesantes que impactan directamente la industria de la construcción. En este artículo se propone la implementación de un modelo de restricciones que genera encofrados para muros rectilíneos usando formaletas modulares. Este enfoque se basa en la descomposición de muros y su representación en instancias del problema de cambio de monedas. Para este propósito, se utiliza el concepto de descomposición rectangular orientada para simplificar la entrada del problema y abordar la solución como un problema de optimización por restricciones (COP). Los experimentos con entradas de prueba ofrecen soluciones en tiempos inferiores a 200 segundos, cuyo resultado es un enfoque práctico y eficiente para la compleja tarea del diseño de encofrados.

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Section: El Diseño De Encofrados En La Industriaunclassified

Diseño del encofrado para muros usando encofrados modulares

Martínez

Díaz

Duque

2019

TecnoL.

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“…The minimum formwork stock problem (Benoist et al 2009b), encountered at Bouygues Construction, aims at minimizing the shuttering material used on a construction site. Once decomposed, the master problem can be viewed as a covering problem, whose scale makes it efficiently tractable by IP solvers.…”

Section: Minimum Formwork Stockmentioning

confidence: 99%

LocalSolver 1.x: a black-box local-search solver for 0-1 programming

et al. 2011

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This paper introduces LocalSolver 1.x, a black-box local-search solver for general 0-1 programming. This software allows OR practitioners to focus on the modeling of the problem using a simple formalism, and then to defer its actual resolution to a solver based on efficient and reliable local-search techniques. Started in 2007, the goal of the LocalSolver project is to offer a model-and-run approach to combinatorial optimization problems which are out of reach of existing black-box tree-search solvers (integer or constraint programming). Having outlined the modeling formalism and the main technical features behind LocalSolver, its effectiveness is demonstrated through an extensive computational study. The version 1.1 of LocalSolver can be freely downloaded at http://www.localsolver.com and used for educational, research, or commercial purposes.

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“…The author aimed to create formwork chains that could be moved from one wall to another without disassembling them in order to save labor costs and crane moves. The main criterion of formwork element allocation may also be minimizing the formwork stock [32]. Biruk and Jaskowski [9] presented a wall formwork layout optimization model for only one work zone.…”

Section: Formwork Selection Problemmentioning

confidence: 99%

Optimization of Vertical Formwork Layout Plans Using Mixed Integer Linear Programming

Biruk

Jaśkowski

2016

Int J Civ Eng

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A formwork is a structure used to contain poured concrete and to mold it to the required dimensions. Different formwork systems provide a wide range of concrete construction solutions that can be chosen to suit the needs of a particular structure. The selection of panels and the design of the formwork layout for concrete structures, especially if the panels are to be reused many times to form different work zones, are one of the most complex tasks in formwork construction. It influences the quality of work, construction time, site safety and cost. The formwork costs account for a significant part of the total costs for concrete works. The problem of the selection and layout of reusable panel forms is solved mainly based on the intuitive judgment of experienced engineers in collaboration with the form system supplier. This study proposes a mixed integer linear programming modeling approach to support the formwork planning process. The problem consists in determining the number and sizes of the panels according to the geometry of the concrete elements to minimize the rental cost of wall shuttering in a building divided into work zones that are to be completed in sequence, reusing the chosen panels. The model can be solved using typical software dedicated to mixed integer linear programs. A simple example is used to illustrate the efficiency of the proposed approach, where the formwork rental cost is 7.31 % lower than the rental costs of panels and corners optimized without consideration of the reuse in consecutive zones.

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Minimum Formwork Stock problem on residential buildings construction sites

Cited by 5 publications

References 6 publications

Diseño del encofrado para muros usando encofrados modulares

Diseño del encofrado para muros usando encofrados modulares

LocalSolver 1.x: a black-box local-search solver for 0-1 programming

Optimization of Vertical Formwork Layout Plans Using Mixed Integer Linear Programming

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