Seismic capacity and vulnerability assessment considering ageing effects: case study—three local Portuguese RC buildings

Couto, Rita; Requena-Garcia-Cruz, María-Victoria; Bento, Rita; Morales‐Esteban, Antonio

doi:10.1007/s10518-020-00955-4

Cited by 21 publications

(10 citation statements)

References 33 publications

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“…Different software was used to numerically model the buildings, focusing on the use of OpenSees [68]. The ageing effects of the RC frames, the infills, the irregularities in plans and in height or the presence of smooth rebar were considered in the analyses, as presented in [69]. The soil-structure interaction effects have also been tested [70].…”

Section: Capacity Curves Obtained For the Huelva Region (Spain)mentioning

confidence: 99%

Improving the Earthquake Resilience of Primary Schools in the Border Regions of Neighbouring Countries

Estêvão

Morales‐Esteban

Sá³

et al. 2022

Sustainability

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This work summarises the strategy adopted in the European research project PERSISTAH. It aims to increase the resilience of the population, focusing on the existing primary schools in the Algarve (Portugal) and Huelva (Spain) regions. Software was developed to assess the seismic safety of these schools, considering different earthquake scenarios. Seismic retrofitting measures were studied and numerically tested. Some of them were also implemented in the retrofitting activities of two case study schools (one in each country). It was found that the adopted ground motion prediction equations (GMPEs) considerably affect the results obtained with the software, especially for offshore earthquake scenarios. Furthermore, the results show that the masonry buildings would be the most damaged school typologies for all the scenarios considered. Additionally, a set of guidelines was created to support the school community and the technicians related to the construction industry. The goal of these documents is to increase the seismic resilience of the population. Different activities were carried out to train schoolteachers in seismic safety based on the guidelines produced, obtaining positive feedback from them.

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Section: Capacity Curves Obtained For the Huelva Region (Spain)mentioning

confidence: 99%

Improving the Earthquake Resilience of Primary Schools in the Border Regions of Neighbouring Countries

Estêvão

Morales‐Esteban

Sá³

et al. 2022

Sustainability

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“…The Peak Ground Acceleration (PGA) was chosen as the earthquake intensity measure (IM) in this study to facilitate a comparison of the analytically derived results with data obtained from experimental campaigns conducted using the chosen RC frame building that are based on the excitation of the structure with different PGA levels (Fardis 1996;Dolšek 2008Dolšek , 2010. Furthermore, the choice of PGA as an IM facilitates a comparison of this study with the analytically derived, PGA-based fragility curves developed for RC frame buildings of varying compliance to seismic code provisions, such as the ones determined by Kappos et al (2006) and the PGA-based fragility curves considering ageing effects on RC frame buildings (Couto et al 2020). Kostinakis et al (2015), Cantagallo et al (2012), Yakut and Yılmaz (2008) and Iervolino et al (2018), among others, demonstrated the high correlation of the spectral acceleration at the fundamental period of the structure with the maximum and average interstorey drifts of RC buildings, indicating that such period-dependent intensity measure could be more appropriate.…”

Section: Estimation Of Seismic Hazard In the Location Of The Rc Buildingmentioning

confidence: 99%

Compliance-based estimation of seismic collapse risk of an existing reinforced concrete frame building

Tsiavos

Amrein

Bender

et al. 2021

Bull Earthquake Eng

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Seismic evaluation of existing structures is based on determining the damage likely to occur during the lifetime of these structures due to earthquake ground motion excitation. However, there is not a consensus about the acceptable level of seismic damage, the expected lifetime of these structures, and the seismic hazard level(s) to evaluate the structures at. This paper presents a methodology for a parametric calculation of the seismic collapse risk of an existing Reinforced Concrete (RC) frame building based on its seismic code compliance, quantified by a dimensionless metric. This metric, defined as compliance factor, compares the seismic capacity of an existing structure with the seismic demand for a new structure at a predetermined hazard level. The inelastic seismic behavior of four models of the RC frame building of varying compliance was analytically investigated in this study to demonstrate the novel methodology. The four models of the RC building were chosen to represent existing RC frame structures designed and constructed before the introduction of modern seismic code provisions. These four building models were excited by a group of earthquake ground motion excitations using Incremental Dynamic Analysis. The collapse probabilities of the four building models, representing varying values of seismic code compliance, were determined for two different locations corresponding to regions of moderate and high seismic hazard, thus laying the basis for the compliance-based estimation of the seismic collapse risk of existing structures.

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“…"Steel02" has been used to model steel. In this case, the smooth rebars have been considered by decreasing the steel elastic modulus as in [21]. The effects of infills have been taken into account by means of the two-diagonal truss approach defined in [22].…”

Section: Superstructurementioning

confidence: 99%

Soil-Structure Interaction in the Seismic Vulnerability Analysis of Rc Buildings. Application to a Case Study Building Located in Southwestern Spain

Requena-Garcia-Cruz¹,

Morales‐Esteban²,

Neyra³

et al. 2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Most seismic vulnerability analyses do not consider the Soil-Structure Interaction (SSI). However, it has been proved that SSI does not equally affect all types of structures and all types of soils. The analysis of the state of the art reveals that SSI especially affects the performance of mid/high-rise buildings under soft/inelastic soil conditions. This leads to overestimating the capacity of buildings and to obtaining unreliable results. This paper aims to assess the soil influence in the seismic vulnerability analysis of a reinforced concrete (RC) building. Three models of a real case study building have been determined (low-rise (real), mid-rise and high-rise). A pre-code 1970s case study building, located in Huelva, has been selected. This building shares typical constructive and structural characteristics with most RC buildings constructed during that period. The 3D continuum model of the soil has been carried out to simulate its nonlinear behaviour. The most probable soil profile has been defined, observing a clayey soil. Therefore, the analyses have been performed under undrained conditions. Nonlinear static analyses have been carried out to determine the seismic capacity of the models through the finite element method (FEM). The damage has been assessed by means of the local procedure, defined in the European seismic code, and the global fragility procedure. The results have shown that the soil does not significantly influence the behaviour of low-rise buildings. However, in the case of mid-and high-rise buildings, the maximum capacity can be reduced by up to 10% and 30%, respectively.

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Seismic capacity and vulnerability assessment considering ageing effects: case study—three local Portuguese RC buildings

Cited by 21 publications

References 33 publications

Improving the Earthquake Resilience of Primary Schools in the Border Regions of Neighbouring Countries

Improving the Earthquake Resilience of Primary Schools in the Border Regions of Neighbouring Countries

Compliance-based estimation of seismic collapse risk of an existing reinforced concrete frame building

Soil-Structure Interaction in the Seismic Vulnerability Analysis of Rc Buildings. Application to a Case Study Building Located in Southwestern Spain

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