Applications of PS suspension logging test in port infrastructures

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Publication Title
Applications of PS suspension logging test in port infrastructures

Abstract
This work has its origin in a research project focused on the characterisation by geophysical methods of different materials present in port infrastructures and the seafloor on which they are founded. The study centered on obtaining the mechanical properties of the materials, so mainly seismic methods were applied. One of the most important conclusions of the study was the verification of the excellent results provided by the PS suspension logging test, which is the reason why this technique has subsequently been used in different technical assistance and research works applied in several Spanish ports. It is a very versatile technique as it only requires one borehole which can be cased or uncased and, in addition, the values of VP and VS can be obtained very accurately at any depth. This paper presents the results obtained with the PS suspension logging probe in different applications: temporal evolution of the stiffness of landfills and ground improvement treatments, localisation of the rocky substrate, checking the state of the concrete of old quays, characterisation of the natural seafloor for the construction of a new quay, etc. With these results, on the one hand, the main advantages of the PS logging probe are highlighted: versatility and accuracy; on the other hand, its most important limitations are also indicated: length of the probe and sensitivity to high seismic noise.
Authors
Angel Tijera; Enrique Asanza; R. Ruiz

Published In

18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)

Theme

A - New developments on structural design

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