The impact of dynamic loads on the displacement of drainage system during urban upgrading: A case study on Tran Van Hoai street, Can Tho city = Ảnh hưởng của tải trọng động đến chuyển vị của cống thoát nước trong quá trình nâng cấp đô thị: Trường hợp nghiên cứu tại đường Trần Văn Hoài, thành phố Cần Thơ

Abstract

This study examines the impact of dynamic loads on the displacement of a drainage system along Tran Van Hoai Street in Can Tho city, using FLAC 7.0 simulations. The goal is to analyze the effects of dynamic loading on the culvert structure in the typical geological conditions of the Mekong Delta, which consist of alluvial soil, mud, and clay. The results show that dynamic loads significantly affect the culvert's displacement, with displacements being 2.5 times greater than those under static loads. Amplitude is the key factor, as larger amplitudes cause a noticeable increase in displacement, heightening the risk of damage and reducing drainage efficiency. Although frequency impacts displacement, the variation is minimal when the frequency ranges from 1 Hz to 5 Hz. The HL93 vehicle produces larger displacements than the Hamm 3412 roller, demonstrating that vehicles with greater loads and more intense oscillations cause more significant deformation. The findings highlight the need for a detailed evaluation of dynamic load impacts during road upgrading projects, especially in areas with soft soil conditions like Can Tho city. To ensure safety and sustainability, measures such as soil reinforcement and optimized culvert design are recommended to improve urban infrastructure and support the city’s long-term development.