An approach to mitigate the seismic risk of existing structures by means of the creation of a continuous thin layer of grouted soil at a convenient depth is presented. A parametric numerical analysis is reported using different constitutive models with reference to two geometrical schemes. It is shown that if the grouted layer has a stiffness significantly lower than that of the surrounding soil, it may be effective in reducing the seismic demand. In the parametric analyses, the positive role of yielding is also observed, which indicates that the barrier is more effective with larger input amplitudes

Numerical Analyses of the Effectiveness of Soft Barriers into the Soil for the Mitigation of Seismic Risk / Flora, Alessandro; Lombardi, Daniele; Nappa, Valeria; Bilotta, Emilio. - In: JOURNAL OF EARTHQUAKE ENGINEERING. - ISSN 1363-2469. - (2018), pp. 1-31. [10.1080/13632469.2016.1217802]

Numerical Analyses of the Effectiveness of Soft Barriers into the Soil for the Mitigation of Seismic Risk

FLORA, ALESSANDRO;Lombardi, Daniele;NAPPA, VALERIA;BILOTTA, EMILIO
2018

Abstract

An approach to mitigate the seismic risk of existing structures by means of the creation of a continuous thin layer of grouted soil at a convenient depth is presented. A parametric numerical analysis is reported using different constitutive models with reference to two geometrical schemes. It is shown that if the grouted layer has a stiffness significantly lower than that of the surrounding soil, it may be effective in reducing the seismic demand. In the parametric analyses, the positive role of yielding is also observed, which indicates that the barrier is more effective with larger input amplitudes
2018
Numerical Analyses of the Effectiveness of Soft Barriers into the Soil for the Mitigation of Seismic Risk / Flora, Alessandro; Lombardi, Daniele; Nappa, Valeria; Bilotta, Emilio. - In: JOURNAL OF EARTHQUAKE ENGINEERING. - ISSN 1363-2469. - (2018), pp. 1-31. [10.1080/13632469.2016.1217802]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/660818
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