A series of non-linear structural analyses is presented in this paper, aimed at investigating the structural behaviour of an innovative light-weight precast concrete wall system made with discretely connected moduli. A model with 2D damage-sensitive elements has been used to investigate the axial and flexural behaviour of a case study wall element. The numerical analyses allow to estimate the crack pattern and to define monotonic capacity curves. The effect of different reinforcement schemes on the structural behaviour of the wall has been also investigated and an innovative solution has been also proposed on the basis of the results, to increase the ductility of a heavily shear-reinforced wall when subjected to seismic action. The numerical results obtained with the 2D damage model have been compared with those of a simplified non-linear beam model. Furthermore, the effectiveness of the simplified model in catching the dynamic non-linear behaviour of the element has been validated with respect to the results from pseudodynamic tests performed at the ELSA/JRC laboratory of Ispra (Italy) in the framework of the Safecast project on a full scale prototype of a multi-storey precast building braced by the walls under investigation.

Numerical and experimental analysis of an innovative lightweight precast concrete wall

DAL LAGO, BRUNO ALBERTO;FERRARA, LIBERATO
2017-01-01

Abstract

A series of non-linear structural analyses is presented in this paper, aimed at investigating the structural behaviour of an innovative light-weight precast concrete wall system made with discretely connected moduli. A model with 2D damage-sensitive elements has been used to investigate the axial and flexural behaviour of a case study wall element. The numerical analyses allow to estimate the crack pattern and to define monotonic capacity curves. The effect of different reinforcement schemes on the structural behaviour of the wall has been also investigated and an innovative solution has been also proposed on the basis of the results, to increase the ductility of a heavily shear-reinforced wall when subjected to seismic action. The numerical results obtained with the 2D damage model have been compared with those of a simplified non-linear beam model. Furthermore, the effectiveness of the simplified model in catching the dynamic non-linear behaviour of the element has been validated with respect to the results from pseudodynamic tests performed at the ELSA/JRC laboratory of Ispra (Italy) in the framework of the Safecast project on a full scale prototype of a multi-storey precast building braced by the walls under investigation.
2017
Precast concrete, Bearing panels, Wall connections, Non-linear modelling, Seismic performance, Damage-sensitive elements, Pseudo-dynamic testing, Full-scale experimentation
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S0141029617303310-main_Low Quality.pdf

Accesso riservato

Descrizione: as published
: Publisher’s version
Dimensione 3.96 MB
Formato Adobe PDF
3.96 MB Adobe PDF   Visualizza/Apri

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/11311/1008782
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 36
  • ???jsp.display-item.citation.isi??? 28
social impact