2025/06/01 by Kutsi Savaş Erduran, Kutsi S. Erduran, Olusola Olusegun Adekoya +4
Earth and Planetary Sciences · Engineering · #Earthquake and Tsunami Effects #Fluid Dynamics Simulations and Interactions #earthquake and tectonic studies
paper · doi:10.1063/5.0268972
openalex publication_date 2025/06/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
This study experimentally investigated bridge pier shape effect on the impact force induced by shock wave generated by a dam break, under four different reservoir water depths and dry downstream flow condition. The maximum force, its occurrence time, force intensity, and the impulse were criteria used to evaluate the performance of the bridge piers. Average and wave front celerities were investigated experimentally and numerically and were compared with existing equations in the literature. The time histories of the impact forces were measured using a load cell, and a two-dimensional numerical model was used to determine the shock wave celerities. At a reservoir water depth of 25 cm, the rectangular bridge pier recorded an impact force 2.68 times greater than that of the ogival pier, which had the smallest impact force, and the maximum force occurred 6.23 times earlier than in the case of the upstream facing ogival pier, which recorded the longest time to maximum force. The force intensity for the rectangular pier was approximately 1.8 times higher than that of the ogival bridge pier, which had the lowest force intensity across all studied water depths. It was found that a 2.5-fold increase in reservoir water depth led to an increase in up to 5.51 times the impact force for the rectangular pier.