Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dynamic Response and Damage Assessment of Bridge Under Heavy Truck Collision
This chapter intends to provide an assessment of the dynamic responses and damage/failure of bridge substructure during the vehicle-pier collisions, by utilizing the refined FE models of a heavy-duty truck and a standard simply-supported highway bridge. Firstly, the numerical algorithms and material model parameters that capture both flexural and shear failure modes were validated by simulating two lateral crash tests with flexible impactors. Then, a comprehensive FE model of a representative four-span RC bridge with two-pier bents was established. Furthermore, an existing high-fidelity FE model of a heavy truck was improved and verified by comparing it with experimental data from eccentric and aligned full-scale crash tests. A series of numerical simulations were conducted to study the collision dynamics of the heavy truck and analyze the failure patterns exhibited by the bridge structure. The parametric influences, including truck mass, impact speed, and angle of impact were also investigated. Finally, linear relationships between key parameters such as initial engine momentum, maximum vehicular impact force, 25-ms moving average force, sectional force, and lateral displacement were proposed.
Dynamic Response and Damage Assessment of Bridge Under Heavy Truck Collision
This chapter intends to provide an assessment of the dynamic responses and damage/failure of bridge substructure during the vehicle-pier collisions, by utilizing the refined FE models of a heavy-duty truck and a standard simply-supported highway bridge. Firstly, the numerical algorithms and material model parameters that capture both flexural and shear failure modes were validated by simulating two lateral crash tests with flexible impactors. Then, a comprehensive FE model of a representative four-span RC bridge with two-pier bents was established. Furthermore, an existing high-fidelity FE model of a heavy truck was improved and verified by comparing it with experimental data from eccentric and aligned full-scale crash tests. A series of numerical simulations were conducted to study the collision dynamics of the heavy truck and analyze the failure patterns exhibited by the bridge structure. The parametric influences, including truck mass, impact speed, and angle of impact were also investigated. Finally, linear relationships between key parameters such as initial engine momentum, maximum vehicular impact force, 25-ms moving average force, sectional force, and lateral displacement were proposed.
Dynamic Response and Damage Assessment of Bridge Under Heavy Truck Collision
Springer Tracts in Civil Engineering
Wu, Hao (Autor:in) / Cheng, Yuehua (Autor:in) / Ma, Liangliang (Autor:in)
20.08.2024
65 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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