Marzouk, M; Said, H and El-Said, M (2009) Framework for multiobjective optimization of launching girder bridges. Journal of Construction Engineering and Management, 135(8), pp. 791-800. ISSN 0733-9364
Abstract
A framework is presented for optimizing the construction of decks of bridges using launching girder systems. The framework assists contractors in performing a time-cost trade-off analysis to optimize the use of resources. The proposed framework consists of three main components which interact in a cyclic manner. These components are simulation, optimization, and reporting modules. Processes and tasks of launching girder systems are described in order to illustrate the mechanism of the simulation module which utilizes STROBOSCOPE as a general purpose simulation language. The developments made in the optimization module are extensively detailed. The optimization module uses ant colony optimization and it accounts for seven optimization variables; location of casting yard, time lag, number of casting forms, number of preparation platform, curing method, number of yard reinforcement crews, and number of stressing crews. Two optimization approaches are coded in the optimization module in two algorithms (ant colony multiobjective optimization I and II) to carry out multiobjective optimization. These are function-transformation and modified distance approaches. A numerical example is presented to illustrate the practical use of the developed framework.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | bridge decks; bridges; girder; optimization |
| Index terms: | module, reinforcement, time-cost trade-off, platform, transformation, ant colony optimization, curing, girder |
| Subjects: | building materials, business, decision-making and optimization, structural engineering, quantity surveying, architectural elements, concrete and cementitious materials, digital design |
| Topics: | Risk Management, Construction Materials, Engineering Principles, Research Practice, Business Strategy, Digital Applications, Design Practice |
| Descriptive scope: | 3 PCA |
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