Research Papers - Department of Civil Engineering

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    A Framework to Incorporate Safety Performance for Low Volume Roads in Pavement Management Systems
    (IEEE, 2020-07-28) Sandamal, R. M. K; Ranawaka, R. K. T. K; Pasindu, H. R
    Low volume roads provide the connectivity between residential, agricultural areas and the national road network. Those are especially critical in rural areas to provide accessibility for the community to fulfill their social and economic needs. Low volume roads account for nearly 61% of the road network length in Sri Lanka while the rapid motorization take place, it is expected the traffic volume on these roads will increase significantly in the future. However, some of these roads have not been constructed and maintained according to the standard design guidelines, and due to that major safety issues are raised on such roads. This study focusses on the main causal factors of low volume road accidents and a methodology developed to evaluate the safety performance based on the roadway characteristics. Further, a framework is proposed to incorporate safety performance in decision criteria especially in the multi-objective optimization process of pavement management systems.
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    Pavement maintenance management system for low volume roads in Sri Lanka
    (IEEE, 2019-07-03) Perera, M. Y. I; Pasindu, H. R; Sandamal, R. M. K
    In Sri Lanka there are about 150,000 km of roads and among those about 75% are considered as rural low volume roads [1]. These roads are essential in community development, transport of people, goods and services in the rural areas. Most of these low volume roads would be actively contributing to our country's economy and wellbeing by distributing the produces from rural areas to urban areas. Limited funding, subjective and ad-hoc maintenance decision making has resulted in suboptimal maintenance level for these road networks. There is no proper maintenance system available in Sri Lanka as in the foreign countries. Lack of technical expertise and shortage of human resources, equipment and funds to carryout detailed data collection and analysis makes use of existing Pavement Management Systems difficult for local road agencies. The study will be focused on developing an asset management system to manage rural and provincial road networks in Sri Lanka.