Training courses, events and seminars

Seminar 'GB-SAR Interferometry displacement measurements during dewatering in construction works. Case of La Sagrera railway station in Barcelona, Spain'

Written on 01 October 2015.

Delivered by: Alejandro Serrano GHS (UPC-CSIC)
Date: Jueves 1 de Octubre a las 12:15 h
Location: Departamento de Ingeniería del Terreno, Aula CIHS, Planta Baja

Summary

Monitoring is a necessary task for infrastructure projects. Ground-based synthetic aperture radar (GB-SAR) has been used in a large variety of displacement measurements. However, it has not yet been applied as a monitoring tool during construction projects. This paper aims to prove that GB-SAR can be helpful for understanding the mechanisms that control structure deformations and for identifying sensitive areas during construction projects. This complements the traditional displacement measurements. An experiment was performed in the future railway station of La Sagrera, Barcelona (Spain) to demonstrate the utility of GB-SAR on structure monitoring during construction projects. In this experiment, GB-SAR precisely quantified wall displacements induced by dewatering. Manual data and numerical models have been used to confirm the measurements with a correlation analysis and by comparing measurements and deformation patterns, which have produced similar results.