Seismic Assessment of a Multi-Span RC Bridge with Randomly Scoured Piers

Journal of Structural Engineering and Geo-Techniques

مقاله 6، دوره 12، شماره 2، دی 2023، صفحه 75-89   

نوع مقاله: Original Manuscript

شناسه دیجیتال (DOI): 10.22094/jseg.2023.1998635.1127

نویسندگان

Ali Raoof Mehrpour Hosseini؛ Mehran Seyedrazzaghi^* ؛ Nasser Shamskia

Department of Civil Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran

چکیده

A multi-hazard investigation approach is a vital requirement for a realistic risk assessment of infrastructures. The combined impact of scouring and earthquake can result in a distinctive effect on the performance of a given bridge. Scouring, being a hazard influenced by various factors, entails numerous uncertainties. Several prior investigations have explored the multi-hazard of scour-earthquake; however, the associated implementation has not accounted for the random scour depths around the foundations of differing bents. This study provides a probabilistic platform to investigate the effect of random scouring on the seismic performance of a multi-span RC bridge. In this regard, researchers employed Monte Carlo simulation to develop a probability hazard curve for scour. The Latin Hypercube technique was applied to randomly select depths, enabling the generation of non-uniform patterns for the depth of cavities formed in different foundations. Subsequently, the study involved conducting non-linear time history analyses on the finite element model. The uniform scouring patterns were also examined to compare the models. The scouring around foundations significantly affects the responses of bridge elements, as it influences the total base shear of the structure and the pounding forces between the superstructure elements.

کلیدواژه‌ها

Bridge؛ Seismic evaluation؛ Scour؛ Multi-hazard؛ Performance assessment