Post-World War II Italian school buildings: typical and specific seismic vulnerabilities

Clementi, Francesco; Quagliarini, Enrico; Maracchini, Gianluca; Lenci, Stefano

doi:10.1016/j.jobe.2015.09.008

Cited by 51 publications

(28 citation statements)

References 29 publications

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“…The first load distribution is directly proportional to the masses of the structures (PushMass) on each floor; the second load distribution is proportional to the main mode in the considered direction (PushMode). These two load distributions could be considered as two limit states of the building capacity [33,34].…”

Section: Nonlinear Static Analysis: Preliminary Considerationsmentioning

confidence: 99%

Assessment of seismic behaviour of heritage masonry buildings using numerical modelling

Clementi

Gazzani

Poiani

et al. 2016

Journal of Building Engineering

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147

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Section: Nonlinear Static Analysis: Preliminary Considerationsmentioning

confidence: 99%

Assessment of seismic behaviour of heritage masonry buildings using numerical modelling

Clementi

Gazzani

Poiani

et al. 2016

Journal of Building Engineering

Self Cite

147

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“…It is also an extension of previous works related to the vulnerability assessment of school buildings [6] with important improvements from the point of view of refined modelling types adopted. Also, in the above-mentioned work, it is emphasized that joint failure is not considered.…”

Section: Discussionmentioning

confidence: 95%

“…First, the knowledge of school building typologies is a prerequisite, which leads to the definition of the associated typical and specific building vulnerabilities. An interesting study, that correlates seismic assessment of school buildings (belonging to lower levels of the Italian education system) and vulnerabilities, was carried out in [6].…”

Section: Introductionmentioning

confidence: 99%

Influence of FE Modelling Approaches on Vulnerabilities of RC School Buildings and Proposal of a CFRP Retrofitting Intervention

Gazzani¹,

Poiani²,

Clementi³

et al. 2019

TOBCTJ

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Background:The vulnerability assessment of existing school buildings against earthquakes represents a priority concern for society. In recent years, several countries promote seismic rehabilitation projects of school buildings, including the allocation of funds to regions with high seismic hazard. Objective:This research aims to highlight some key role aspects related to difficulties encountered in the numerical modelling of RC structures hosting school activities.This work evaluates the seismic vulnerability of school buildings located in the municipality of Trecastelli (Marche, Central Italy) to quantify the effective influence of typical and specific seismic vulnerabilities detected on the global seismic behaviour of each building.The effectiveness of a possible Carbon Fibre Reinforced Polymer (CFRP) local strengthening intervention, for the case study, aimed to confine unconfined beam-column joints is also considered. Methods:Three different numerical models of a Reinforced Concrete (RC) school building are implemented with the lumped plasticity, the distributed plasticity (fibre) and the 3D Continuum Finite Element (FE) approaches. Nonlinear static (pushover) analyses are performed to assess the global seismic behaviour of the structure, and the limitations to represent the reality with different approaches. After the seismic vulnerability assessment of the case study, a CFRP retrofitting intervention is proposed to confine external beam-column joints. Results:The comparison of the numerical results of three models shows that the fibre model is the least suitable means to represent shear problems, while the lumped plasticity model is closer to reality than the previous one even if it does not take into account the concomitance of bending, shear and axial force and the interaction between them in the inelastic response. Of course, the 3D Continuum model is the most accurate representation to describe the complex and combined mechanisms developed in the joint panels. Nonlinear static (pushover) analyses carried out on unreinforced and reinforced structures of Continuum model demonstrate that the Fibre Reinforced Polymer (FRP) strengthening improves the displacement capacity of the structure. Conclusion:This study has highlighted the strengths and weaknesses of different modelling types. The meaningful information about mechanisms developed in joints given by the 3D Continuum FE model is useful to identify shortcomings of the design project and to conceive a retrofitting strengthening intervention.CFRP sheets externally bonded on beam-column joints may improve the seismic frame performances without a significant change of the structural stiffness, promoting a ductile failure mode with a higher displacement capacity than the unreinforced case.

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“…It might be worth to remind that IR >1 corresponds to a safe structure, IR<1 corresponds to an unsafe building on the standard of the new constructions [22]. The TR,C in Eq.…”

Section: Nonlinear Static Analysis: Considerations and Resultsmentioning

confidence: 99%

Seismic Assessment of Cultural Heritage: Nonlinear 3d Analyses of “Santa Maria Della Carità” in Ascoli Piceno

Monni¹,

Clementi²,

Quagliarini³

et al. 2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Post-World War II Italian school buildings: typical and specific seismic vulnerabilities

Cited by 51 publications

References 29 publications

Assessment of seismic behaviour of heritage masonry buildings using numerical modelling

Assessment of seismic behaviour of heritage masonry buildings using numerical modelling

Influence of FE Modelling Approaches on Vulnerabilities of RC School Buildings and Proposal of a CFRP Retrofitting Intervention

Seismic Assessment of Cultural Heritage: Nonlinear 3d Analyses of “Santa Maria Della Carità” in Ascoli Piceno

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