Monitoring of Full Scale Diaphragm Wall for a Deep Excavation

Francesco Castelli, Valentina Lentini

Abstract

The paper reports the results of an experimental study carried on a full scale anchored pile diaphragm wall that is a part of the new Library of the University of Enna “Kore”, Enna (Italy). The retaining wall has a free height of about 10 meters with an overall length of 22 meters, and it is composed of two rows of reinforced concrete (r.c.) piles 1000 mm in diameter. An r.c. top-beam was constructed on the top of the structure. Two piles, located in the central part of the wall, have been instrumented with conventional inclinometer cases and embedded piezoelectric accelerometers. The experimental measurements recorded during the construction and in operation are reported and discussed in detail. Based on the interpretation of the geotechnical soil data, derived from conventional boreholes, down-hole and laboratory tests, a FEM model of the system was developed and implemented using the code PLAXIS. It has been observed that this model allows for a satisfactory simulation of the displacement of the wall during the construction phases i.e., under a static loading scenario.

Keywords

Diaphragm, Excavation, Monitoring, Accelerometers, FEM

Download

IMEKO-TC4-GEO-2016-18.pdf

DOI

-

IMEKO TC

TC4 - Measurement of Electrical Quantities

Back to the proceedings