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Abstract
Work zone length in the highways’ resurfacing is an important factor that should be determined before the start of work. This factor influences the time and cost of the project. This paper presents a framework that is dedicated for determining the optimum length of highway resurfacing work zone. The framework estimates the total duration and total cost of resurfacing by conducting simulation analysis to model the resurfacing operations of highways to account associated uncertainties. The framework analyzes resurfacing of highways and divides them into zones. The lengths of these zones depend on minimum total cost and minimum duration. The framework consists of two modules; simulation and optimization. Simulation module is responsible for estimating total duration for each work zone. Whereas, optimization module optimizes the total cost including direct resurfacing operation, indirect/overhead costs, and the impact of work on road users’ costs. The latter costs include queuing delay cost, moving delay cost, accident cost. A numerical example is presented to illustrate the practical use of the framework.
Highlights
IntroductionEspecially pavement rehabilitation or resurfacing, requires lane closures
Highway maintenance, especially pavement rehabilitation or resurfacing, requires lane closures
The developed framework performs planning of highways resurfacing operation and selects optimum length of work zone based on minimum total cost and total duration
Summary
Especially pavement rehabilitation or resurfacing, requires lane closures. Resurfacing of highways is executed in different environmental conditions which raise uncertainties that influence the production rates of construction resources These different conditions includes unusual or complex works, equipment breakdown, unfavorable weather conditions, and unexpected site conditions. Several simulation systems have been designed for construction (Halpin, Riggs 1992; Martinez 1996) These systems use some form of network based on Activity Cycle Diagrams to represent the essentials of a model, and employ clock advance and event generation mechanisms based on Activity Scanning or Three-Phase Activity Scanning. The optimum work zone is the one that results in the minimum overall agency and user costs The minimization of these costs is often the goal of corridor planning. Hajdin and Lindenmann (2007) presented a method that enables road agencies to determine optimum work zones and intervention packages. A numerical example is worked out to demonstrate the essential features of the proposed framework
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