A Variational Inequality-based Walkability Assessment Model for Measuring Improvement Effect of Transit Oriented Development (TOD)

- Journal title : Journal of The Korean Society of Civil Engineers
- Volume 36, Issue 2, 2016, pp.259-268
- Publisher : Korean Society of Civil Engeneers
- DOI : 10.12652/Ksce.2016.36.2.0259

Title & Authors

A Variational Inequality-based Walkability Assessment Model for Measuring Improvement Effect of Transit Oriented Development (TOD)

Sohn, Jhieon;

Sohn, Jhieon;

Abstract

The core strategy of transit oriented development (TOD) is to promote high density mixed land use around railway stations. Case studies in advanced countries show that provision of policies for comprehensive maintenance of pedestrian facilities around railway station spheres is being pursued with efficacy. In spite of the importance placed on integrated pedestrian maintenance, domestic construction of integrated pedestrian infrastructure around railway station spheres lacks direction. Thus, there is a clear need for an evaluation standard that can provide the foundation for judgments on TOD improvement. This research proposes a network model that consolidates the interior of the station as well as its surrounding areas to determine the ease of pedestrian flow for effective TOD evaluation. The model considers the railway station and surrounding areas as an assembled network of pedestrian flow. The path chosen by the pedestrian is defined as the optimal degree of inconvenience, and expands on Wardrop`s User Equilibrium (1952). To assess the various circumstances that arise on pedestrian facilities including congestion of the pedestrian pathway, constrained elevator capacity, and wait at the crosswalk, a variational inequality based pedestrian equilibrium distribution model is introduced.

Keywords

Transit oriented development;Integrated pedestrian facilities;Variational inequality;Pedestrian equilibrium;

Language

Korean

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