نوع مقاله : مقاله پژوهشی
نویسندگان
1 استادیار، دانشکده مهندسی عمران، دانشکده فنی، دانشگاه تهران، تهران، ایران
2 دانش آموخته دکتری، مهندسین مشاور آتیهساز شرق، تهران، ایران
3 استادیار، دانشکده مهندسی عمران، دانشگاه علم و صنعت، تهران، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Rapid growth of population in metropolitan areas has led to an increase in transportation demand. Accordingly, development of transportation infrastructures is a necessity in management of urban transportation networks. Economic analysis of multiple projects is a major step toward achieving this goal. In order to evaluate the effects of network development plans, especially for the expressways and their interchanges, macroscopic traffic modeling software is usually applied. The software is capable of anticipating the traffic flow distribution in large scale networks and has acceptable accuracy according to their mathematical modeling approach. Also known as static tools, these software encounter severe level of errors in forecasting the traffic situations in small scale areas where interactions between traffic flows exist. Hence, using these tools to evaluate the plans of expanding the expressway network may lead to select a project which would not generate the expected benefits if implemented. In this paper, a hybrid modeling approach based on macroscopic and microscopic paradigms is proposed to verify the results of static software. In order to assess the proposed method, a real case design for completing the interchanges of an intersection between two major expressways in Tehran is studied. It is shown that applying the hybrid scheme is a necessity to guarantee the success of projects due to the characteristics of static software.
کلیدواژهها [English]