Volume 09,Issue 02

Characterization of Scour-Induced Subsurface Deformations in Port Structures with Contiguous Pile Walls using Ground-Penetrating Radar (GPR)

Authors

Navid Joushideh, Amin Majidi, Hamid Tabrizi, Sara Shomal Zadeh

Abstract
This study presents a comprehensive investigation of subsurface manifestations, including potential cavities and scouring phenomena, within Berths 1 to 9 of Bandar-e-Anzali port, Iran, utilizing ground-penetrating radar (GPR) surveys. The objective of the study was to gain insights into the prevailing subsurface conditions and identify any critical situations that could lead to settlement and collapse, particularly related to scour-induced cavities. A total of 94 profiles were obtained using a GPR device equipped with a 250 MHz antenna, covering approximately 1,400 meters of the quay length. The collected data underwent various processing techniques, including background removal, Fk filter, contrast adjustment, and gain adjustment. Analysis and interpretation of the data revealed anomalies beneath the quay, primarily near the piles of the quay wall and beneath the utility trenches. Test pits were excavated at specific points to verify the accuracy of the results, confirming significant void spaces and cavities exceeding depths of 1.5 meters. These findings indicate a susceptibility to settlement and collapse due to water penetration and scouring of materials in close proximity to the sea. The study highlights the importance of GPR surveys in assessing subsurface conditions and identifying potential risks in marine structures such as ports and jetties.

Keyword: Ground penetration radar, Quay wall, Pile groups, Non-destructive testing, subsurface.

PDF [ 1007.03 Kb ] | Endnote File | XML