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Critical Sequence Crashing Heuristic for Resource-Constrained Discrete Time-Cost Trade-Off Problem
Date
2016-03-01
Author
Sönmez, Rifat
Iranagh, Mahdi Abbasi
Uysal, Furkan
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Despite the importance of project deadlines and resource constraints in construction scheduling, very little success has been achieved in solving the resource-constrained discrete time-cost trade-off problem (RCDTCTP), especially for large-scale projects. In this paper a new heuristic method is designed and developed to achieve fast and high-quality solutions for the large-scale RCDTCTP. The proposed method is based on the novel principles to enable effective exploration of the search space through adequate selection of the activities to be crashed for a resource constrained schedule, by only crashing the activities with zero float in a resource constrained-schedule, which form the critical sequence. The computational experiment results reveal that the new critical sequence crashing heuristic outperforms the state-of-the-art methods, both in terms of the solution quality concerning project cost and computation time. Solutions with a deviation of 0.25% from the best known solutions are achieved within seconds for the first time, for a large-scale project including up to 2,000 activities. The main contribution of the new heuristic to practitioners and researchers is that it provides a fast and effective method for optimal scheduling of real-life-size construction projects with project deadlines and resource constraints. (C) 2015 American Society of Civil Engineers.
Subject Keywords
Strategy and Management
,
Industrial relations
,
Civil and Structural Engineering
,
Building and Construction
URI
https://hdl.handle.net/11511/41947
Journal
JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT
DOI
https://doi.org/10.1061/(asce)co.1943-7862.0001077
Collections
Department of Civil Engineering, Article