This paper deals with the effect that an extensive jet grouting treatment produced on preexisting structures. For the excavation of the new underground station of Conca d'Oro in Rome, adjacent jet grouted columns were created, that connected the two opposite diaphragm walls to provide horizontal contrast, and to reduce the hydraulic flow into the excavation. The jet grouting operations induced significant movements of the diaphragm walls and of the adjacent buildings, that were monitored carefully during the entire construction process. The monitored quantities allowed to establish relationship between the induced structure deformations and some jet grouting parameters, such as the daily production rate and the cumulative number of the jet grouted columns. On the basis of the monitoring results, it was also possible to devise an interpretation of the mechanisms that regulate the jet grouting-induced soil displacements. © 2012 Taylor & Francis Group.

An interpretation of jet grouting effects on the retaining structures of a deep excavation and on adjacent buildings / Fontanella, Enzo; Callisto, Luigi; Desideri, Augusto; A., Sciotti; C., Ottaviani. - STAMPA. - (2012), pp. 941-948. ((Intervento presentato al convegno 7th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground tenutosi a Roma nel 17 May 2011 through 19 May 2011 [10.1201/b12748-124].

An interpretation of jet grouting effects on the retaining structures of a deep excavation and on adjacent buildings

FONTANELLA, Enzo;CALLISTO, Luigi;DESIDERI, Augusto;
2012

Abstract

This paper deals with the effect that an extensive jet grouting treatment produced on preexisting structures. For the excavation of the new underground station of Conca d'Oro in Rome, adjacent jet grouted columns were created, that connected the two opposite diaphragm walls to provide horizontal contrast, and to reduce the hydraulic flow into the excavation. The jet grouting operations induced significant movements of the diaphragm walls and of the adjacent buildings, that were monitored carefully during the entire construction process. The monitored quantities allowed to establish relationship between the induced structure deformations and some jet grouting parameters, such as the daily production rate and the cumulative number of the jet grouted columns. On the basis of the monitoring results, it was also possible to devise an interpretation of the mechanisms that regulate the jet grouting-induced soil displacements. © 2012 Taylor & Francis Group.
7th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground
diaphragm walls; monitoring; deep excavation; jet grouting
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
An interpretation of jet grouting effects on the retaining structures of a deep excavation and on adjacent buildings / Fontanella, Enzo; Callisto, Luigi; Desideri, Augusto; A., Sciotti; C., Ottaviani. - STAMPA. - (2012), pp. 941-948. ((Intervento presentato al convegno 7th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground tenutosi a Roma nel 17 May 2011 through 19 May 2011 [10.1201/b12748-124].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/410766
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