Sustainable Highway Maintenance: Optimization of Existing Highway Vertical Alignment Considering Pavement Condition

Mohammad Mahanpoor, Saeed Monajjem and Vahid Balali
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Mohammad Mahanpoor: Department of Civil Engineering, K.N.Toosi University of Technology, Tehran 19498, Iran
Saeed Monajjem: Department of Civil Engineering, K.N.Toosi University of Technology, Tehran 19498, Iran
Vahid Balali: Department of Civil Engineering and Construction Engineering Management, California State University, Long Beach, CA 90840, USA

Sustainability, 2019, vol. 11, issue 6, 1-20

Abstract: Any change in the geometric configuration of the existing road affects other dependent elements such as travel time, fuel consumption, and existing pavement. This paper quantifies these effects and finds an optimum geometric configuration. Three separate models are developed in this research: (1) the travel time model which predicts vehicles flow speed on the specified geometric condition, traffic composure, and evaluates the imposed costs to the road users; (2) the fuel consumption model, which estimates needed propulsive force and anticipated fuel for vehicles passing through the road; and (3) the pavement rehabilitation cost model considering two main constraints of existing pavement condition and project line elevation. The developed pavement rehabilitation model proposes the best solution for pavement rehabilitation practice and computes associated costs. Particle Swarm Optimization (PSO) is used to find the optimum solution in a minimization problem search space. The proposed model is applied to a real-world case study. Results show that there is an extremely less tendency for change, even with the existence of adverse geometric conditions, when there is a relatively good pavement condition. In the case of deteriorated pavement conditions, economic justification for geometric modification is required.

Keywords: sustainable maintenance; geometric design; Particle Swarm Optimization (PSO); optimization; longitudinal profile; fuel consumption; travel time; pavement rehabilitation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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