Vulnerability assessment and retrofit solutions of precast industrial structures

Belleri, Andrea; Torquati, Mauro; Riva, Paolo; Nascimbene, Roberto

doi:10.12989/eas.2015.8.3.801

Cited by 58 publications

(33 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Before that, numerous buildings were designed and built without modern anti-seismic criteria. Such buildings have highlighted considerable vulnerability to recent seismic events (Bournas et al, 2014;Magliulo et al, 2014;Belleri et al, 2015a;Belleri et al, 2015b;Ercolino et al, 2016;Minghini et al, 2016;Belleri, 2017;Nastri et al, 2017;Palanci et al, 2017). These vulnerabilities are related to multiple local collapse mechanisms and vulnerabilities such as the loss of support of the roof elements and/or beams, the overturning of the RC cladding panels and the collapse of RC columns or forks at the top of the columns (Brunesi et al, 2015;Belleri et al, 2016;Belleri et al, 2017a;Dal Lago et al, 2018;Ercolino et al, 2018;Torquati et al, 2018;Iervolino et al, 2019;Bosio et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Crescent-Moon Beam-To-Column Connection for Precast Industrial Buildings

Bressanelli

Bosio

Belleri

et al. 2021

Front. Built Environ.

Self Cite

View full text Add to dashboard Cite

The 2012 Emilia earthquakes caused significant damage to existing precast reinforced concrete (RC) industrial buildings not specifically designed to resist seismic actions. The main failure mechanisms were related to the loss of support of beams and roof elements caused by high relative displacements, to the failure of the mechanical connections and consequent fall of cladding panels, to the damage at the base of the columns and to the collapse of RC forks at the top of the columns. In all cases, the behavior of the connections, and specifically of beam-to-column connections, demonstrated to be crucial, given that they may inhibit the exploitation of strength and ductility reserves in precast elements. This paper presents a beam-to-column connection restraint-device for precast industrial buildings. The device can be applied to existing structures to transfer horizontal seismic forces between beams and columns and to increase the energy dissipation of the system. Design criteria were defined with the aim to limit the relative maximum displacement at the beam-to-column interface and to mitigate the out-of-plane overturning of the beam. Numerical analyses were carried out to define a suitable shape of the device and to investigate its effectiveness in terms of both local and global behavior. To validate the computational results, experimental tests have been also carried out. The tests allowed to classify the device as “dissipative” according to UNI EN 15129. Finally, the design procedure has been validated considering a one-story industrial building case study designed in accordance with the Italian building code.

show abstract

Section: Introductionmentioning

confidence: 99%

Crescent-Moon Beam-To-Column Connection for Precast Industrial Buildings

Bressanelli

Bosio

Belleri

et al. 2021

Front. Built Environ.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recent earthquakes in Italy highlighted many vulnerabilities of existing industrial precast structures [5], [6], [7], [8]. The main collapses experienced by these structures are related to: fall of roof elements caused by high relative displacement and loss of support, loss of support in the beam-to-column connections, rupture of the mechanical connections and consequent fall of cladding panels [9], [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Effects of Modelling Assumption on the Evaluation of the Local Seismic Response for Rc Precast Industrial Buildings

Bressanelli¹,

Belleri²,

Riva³

et al. 2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

Self Cite

View full text Add to dashboard Cite

The present research is aimed at evaluating the influence of different modelling assumptions, such as crane-load and beam-column connections, on the local seismic response of precast RC buildings. The considered case study is a one-story industrial building designed in accordance with the Italian building code NTC 2008. Typical pinned beam-column connections are investigated. They are made by dowels protruding from the column inserted into holes in the beams, which are subsequently grouted. This technique ensures stability during the construction process and allows the horizontal seismic load transfer from the beam to the column. Different structural layouts have been modeled considering various types of beamcolumn joint models, namely a perfect hinge, an elastic hinge and a non-linear spring with a degrading hysteretic force-displacement model; the last model reproduces the results of recent experimental campaigns. Non-linear dynamic time history analyses allow to evaluate displacements, drifts, deformations and ultimate curvatures. The results are analyzed in terms of both global quantities, i.e. roof maximum displacements and rotation at the base of the columns, and local quantities, i.e. force or displacement demand at the beam-column connections, for the various implemented models. Depending on the considered model, it is observed that the effects of higher vibrating modes may increase the load in the connections.

show abstract

“…Recent earthquakes in Italy (L'Aquila 2009 and Emilia 2012) highlighted the vulnerability of precast reinforced concrete (RC) structures, which are not designed according to the modern seismic codes as reported in numerous studies . The main vulnerabilities, which caused both local and global collapses, are related to the lack of effective horizontal load transfer mechanism between precast elements and to the lack of displacement and rotation compatibility among structural elements and between structural and nonstructural elements …”

Section: Introductionmentioning

confidence: 99%

Evaluation of out‐of‐plane seismic performance of column‐to‐column precast concrete cladding panels in one‐storey industrial buildings

Belleri

Cornali

Passoni

et al. 2017

Earthq Engng Struct Dyn

Self Cite

View full text Add to dashboard Cite

Summary Recent earthquakes in Italy (L'Aquila 2009 and Emilia 2012) highlighted the vulnerability of precast cladding panels, typically associated with a connection system not designed to account for displacement and rotation compatibility between the panels and the supporting structure. Experimental investigations were performed in the past to investigate the in‐plane performance of cladding panels and design recommendations have been made accordingly; however, in the case of out‐of‐plane seismic loads, the load demand is commonly evaluated in the design practice by means of formulations for nonstructural components. This paper summarizes the results obtained from parametric analyses conducted to estimate the out‐of‐plane load demand in column‐to‐column cladding panels typical of one‐storey commercial and industrial buildings. Empirical equations suitable for both new and existing panels are proposed and compared with the design equations given in Eurocode 8 and ASCE 7. The paper also considers the effects of the development of plastic hinges at the column base and of the roof flexibility on the load demand in panel‐to‐column connections. The roof flexibility may generate the torsion of the panels; consequently, an analytical procedure to account for such effects is proposed. Finally, general design recommendations are made.

show abstract

Vulnerability assessment and retrofit solutions of precast industrial structures

Cited by 58 publications

References 18 publications

Crescent-Moon Beam-To-Column Connection for Precast Industrial Buildings

Crescent-Moon Beam-To-Column Connection for Precast Industrial Buildings

Effects of Modelling Assumption on the Evaluation of the Local Seismic Response for Rc Precast Industrial Buildings

Evaluation of out‐of‐plane seismic performance of column‐to‐column precast concrete cladding panels in one‐storey industrial buildings

Contact Info

Product

Resources

About