The paper presents the main results of several numerical dynamic analyses of propped embedded retaining structures. The numerical model entails the static condition of an excavation 4m height in presence of a pair of retaining cantilever walls in a dry, coarse grained soil. Successively, two structural elements (props) connecting the opposite walls have been introduced. Two strong motion acceleration time histories, recorded during two Italian earthquakes, and two equivalent analytical waveforms have been applied to the bottom of the model. The results indicate a very complex response of the system, due to the effects of local seismic response and soil-structure interaction phenomena. Increments of forces acting on structural elements due to seismic actions are significant; however, yield bending moments of wall section are only reached for seismic events of high intensity. © 2014 Taylor & Francis Group, London.

Dynamic analyses of propped retaining structures

TROPEANO, GIUSEPPE;SOCCODATO, FABIO MARIA
2014-01-01

Abstract

The paper presents the main results of several numerical dynamic analyses of propped embedded retaining structures. The numerical model entails the static condition of an excavation 4m height in presence of a pair of retaining cantilever walls in a dry, coarse grained soil. Successively, two structural elements (props) connecting the opposite walls have been introduced. Two strong motion acceleration time histories, recorded during two Italian earthquakes, and two equivalent analytical waveforms have been applied to the bottom of the model. The results indicate a very complex response of the system, due to the effects of local seismic response and soil-structure interaction phenomena. Increments of forces acting on structural elements due to seismic actions are significant; however, yield bending moments of wall section are only reached for seismic events of high intensity. © 2014 Taylor & Francis Group, London.
2014
9781138026889
Geotechnical engineering; Numerical methods; Acceleration-time history; Coarse-grained soils; Complex response; Local seismic response; Numerical dynamics; Retaining structure; Static conditions; Structural elements
File in questo prodotto:
File Dimensione Formato  
CH196.pdf

Solo gestori archivio

Tipologia: versione post-print (AAM)
Dimensione 4.06 MB
Formato Adobe PDF
4.06 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/115586
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9
  • ???jsp.display-item.citation.isi??? ND
social impact