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Subject Area

Civil and Environmental Engineering

Article Type

Original Study

Abstract

The sustainable development of coastal infrastructures such as docks and marine piers as well as riverine structures such as bridges, is critical to strengthening the global economy and developing international trade relationships. As a result, it is critical to provide vital insights into the hydraulic and geomorphological implications of any changes to infrastructures, enhancing our comprehension of sustainable practices in the marine and riverine environments. So, this experimental study delves into the intricate dynamics of scour hole morphology caused by integrating additional new pile group alongside before or behind an existing one, focusing on local scour deformations induced through extending the length of marine piers or widening riverine or coastal bridges. The impacts of varied spacing between existing and additional pile groups on local scour alterations under clear water scour conditions were investigated. The findings reveal that the fresh installed pile groups and their positioning spacing have a substantial influence on the configuration of the original scoured region, particularly the maximum scour depth and scoured area length. Furthermore, empirical formulas to forecast the scour hole length, width and maximum scour depth were proposed. Finally, a comparison of the well-known scour estimation methods for equilibrium scour depth was discussed, capturing the essence of sustainable growth in essential infrastructure enhancement.

Keywords

Bridges; local scour; Pile group; positions; scour geometry

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

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