Rethinking Construction Schedule Risks of Infrastructure Projects from a Dynamic Perspective

Exploring construction schedule risks in infrastructure projects has been highly topical. However, few studies have examined construction schedule risks from a dynamic perspective and mainly provided nongeneralizable single-case experiences. This article explores the phase variations of the construction schedule risks in three construction-related phases including construction readiness, construction for major units, and delivery readiness. With questionnaires and semi-structured interviews from China, a research methodology that combines grounded theory, fuzzy Bayesian network, and Noisy-or gate was conducted. The study grouped 22 risks into five categories: management, participant, technical, resource, and environmental risks, and identified the causal relationships among all risks. The results indicate that the key construction schedule risks vary in different phases. This study expands the knowledge domain of schedule risk management and provides practitioners with practical and efficient insights into infrastructure project management within the context of China.