BIM WORKFLOW FOR ROAD TUNNEL DESIGN

Abstract

Developing BIM models for tunnel infrastructure remains challenging due to complex geometries, repetitive structural components, and the need for frequent updates when design changes occur. This study proposes a BIM workflow based on the application of Dynamo algorithms to automate the BIM modeling process for road tunnels. The proposed method is implemented through a case study of two tunnels within the An Phu interchange project in Ho Chi Minh City, Vietnam. The effectiveness of the Dynamo-based BIM workflow is evaluated using a set of quantitative and qualitative performance indicators, including modeling time, model update capability under design changes, and workflow reusability. The results demonstrate the practical applicability of automated BIM workflows for the design of transportation infrastructure projects in Vietnam.