VI. RESEARCH WORK DONE IN ACADEMIC INSTITUTIONS RELATED TO THESIS WORK

A. HIGHWAY PLANNING, MANAGEMENT, PERFORMANCE EVALUATION AND INSTRUMENTATION
4. Pavement Network Optimization for Maintenance and Rehabilitation
Date of Start

August 2004
Indian Institute of Technology Madras (R, C)

 

Scope and Objectives

In India, an increasing proportion of the roads are showing premature failure due to increased magnitude of wheel load applications and lack of scientific maintenance and rehabilitation (M&R) management methods.

• Formulate an optimization framework for Maintenance Management at the network level including identifying percentage of roads in each category requiring a given maintenance action to determine optimal timing and allocation of funds at the project level.

• Develop and Implement a solution methodology for selected Road Networks.

• Investigate the joint influence of traffic growth rate and deterioration on optimal maintenance policies.

 
Methodology
The proposed research is planned to develop an optimization model, for the allocation of resources for M&R of highway pavements and estimation of the optimal expected annual cost of M&R activities. This approach applies a discrete-time Markovian model to predict pavement performance with the inclusion of pavement improvement resulting from M&R actions. The optimization can be performed using network flow algorithms, to minimize the cost of M&R activities per annum and maximize the benefits. The network level and project level planning are combined into single framework, which helps to integrate financial planning, program planning and design of M&R actions. Using this approach the designer is able to select the project candidates, optimum overlay timing and thickness and optimum maintenance treatments to keep the pavements in pristine condition.