Seismic performance of masonry residential buildings in Lorca’s city centre, after the 11th May 2011 earthquake

Salom, Luisa Basset; Víllora, Arianna Paola Guardiola

doi:10.1007/s10518-013-9559-8

Cited by 21 publications

(8 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Table 3 shows the regional modifiers for the building typologies in Ciutat Vella. These coefficients have been defined from the Barcelona regional modifiers proposed by Lantada (2007) and Lantada et al (2010) adapted for L'Eixample district in Valencia by Guardiola-Víllora and Basset-Salom (2015), as well as from the studies of the performance of masonry and RC buildings damaged during Lorca May 11 th 2011 earthquake (Feriche et al 2012, Basset-Salom and Guardiola-Víllora 2014, Martinez-Cuevas and Gaspar-Escribano 2016. The behaviour modifiers, Vm, take into account the contribution to the vulnerability index of factors related to the building itself and to its location within in the block, therefore their applicability depends strongly on the level of detailed information available for the building stock.…”

Section: = Vi*+ Vr+ Vmmentioning

confidence: 99%

Earthquake risk scenarios of the Ciutat Vella District in Valencia, Spain

Víllora

Salom

2019

Bull Earthquake Eng

Self Cite

View full text Add to dashboard Cite

According to the United Nations Office for Disaster Risk Reduction cities must take measures to anticipate disasters and mitigate their impact, protecting homes and cultural heritage, minimizing losses due to earthquakes and other threats. After the recent earthquakes in historical city centres, the evaluation of the seismic risk, even in regions of low or moderate seismicity, is imperative, being damage assessment and loss estimation essential for its reduction. In this paper the seismic risk analysis of the residential buildings in the Ciutat Vella District in Valencia, with great historical and architectural value, is presented. The vulnerability of Ciutat Vella has been assessed with the Vulnerability Index Method establishing the seismic quality of the residential buildings according to their structural typology, conservation status, age and geometry; identifying the most vulnerable buildings. Damage probability matrices have been obtained for the deterministic and probabilistic earthquake scenarios, estimating for each of them, the seismic risk in terms of direct social and economic losses, mapping the results using a GIS system tool. Results confirm that the vulnerability of the building stock in Ciutat Vella is high being the seismic risk significant. In the event of an earthquake, many residential buildings included in the Catalogue of Listed Buildings of the Special Protection Plan of Ciutat Vella will be damaged. A detailed analysis of the most vulnerable buildings will provide criteria for intervention to enhance their structural seismic response, safeguarding the architectural heritage and contributing to the reduction of human and material losses.

show abstract

Section: = Vi*+ Vr+ Vmmentioning

confidence: 99%

Earthquake risk scenarios of the Ciutat Vella District in Valencia, Spain

Víllora

Salom

2019

Bull Earthquake Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…For instance, reconnaissance reports from past events have highlighted situations in which nearby structures shared similar typological characteristics, yet very different damage levels. 2,3 Amongst many others, such variations may be explained by the randomness associated to the mechanical properties of the materials, structural interventions, variability in the soil conditions, or the different orientation of similar buildings vis-à-vis incoming seismic waves. The latter aspect is commonly known as the directionality effect, and there is evidence that it is a fairly strong aspect of ground motions recorded in short to moderate distances from the rupture (e.g., see 4 on the 2010-2011 Canterbury events).…”

Section: Introductionmentioning

confidence: 99%

“…They lead to a high variability on the estimated structural damage due to an earthquake. For instance, reconnaissance reports from past events have highlighted situations in which nearby structures shared similar typological characteristics, yet very different damage levels 2,3 . Amongst many others, such variations may be explained by the randomness associated to the mechanical properties of the materials, structural interventions, variability in the soil conditions, or the different orientation of similar buildings vis‐à‐vis incoming seismic waves.…”

Section: Introductionmentioning

confidence: 99%

A simplified approach for including the incidence angle effect in seismic risk assessment

Alzate

Silva

Vamvatsikos

et al. 2021

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

A simplified procedure is developed to consider the azimuthal orientation of buildings when estimating seismic risk. Two square‐plan reinforced concrete building models are considered as a testbed, one with similar and one with dissimilar properties along the two principal horizontal axes. The fragility of both structures is analysed using a set of ground motion records rotated to multiple incidence angles to develop orientation‐dependent fragility functions. It has been observed that, re‐orienting all records so that these structures have the same azimuth vis‐à‐vis the corresponding epicentre leads to significant differences compared to assuming random orientations. Additional results stemming from single‐degree‐of‐freedom oscillators further confirm such findings, showing a dependence to the proximity to the faults and the level of dissimilarity in the principal horizontal axes of the structure. The end results point to a non‐negligible bias in assessment studies when a structure's orientation with respect to governing rupture scenarios is not taken into account. It is shown that the median of fragility curves calculated for un‐rotated incidence angles can be bias‐corrected through shifted by an amount that depends on the azimuthal orientation and level of axes‐dissimilarity of structures.

show abstract

“…The occurrence of recent earthquakes affecting urban city centres (L'Aquila, 2009, Lorca, 2011, Emilia Romagna, 2012, Katmandu, 2015, Amatrice, 2016, Bagan, 2016 has highlighted the need to assess the seismic risk, even in low to moderate seismic hazard countries in which less strong earthquakes can, nonetheless, cause severe damage, due to the high vulnerability of the buildings. The main reason is that many buildings don't meet the requirements to withstand seismic actions, neglecting, in addition, other factors which are relevant for an adequate seismic performance such as geometric or stiffness regularities (Basset-Salom et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Mapping an Urban City Centre for Seismic Risk Assessment: Application to Valencia (Spain)

Salom

Víllora

2020

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

View full text Add to dashboard Cite

Abstract. Seismic risk in urban city centres may be high, even when the city is in low to moderate seismic areas, due to the vulnerability of the residential buildings. To assess the seismic vulnerability and estimate the expected damage in case of occurrence of an earthquake, an up-to-date detailed and comprehensive information of the residential building stock, such as number of dwellings, location, age, geometry, stiffness irregularities, structure, constructive system and practices, among others, is needed. This paper presents the authors experience, describing the step by step procedure followed to obtain the required information to classify and catalogue the residential buildings of the historical neighbourhoods of the city of Valencia into a database. Official sources, like the Cadastral Database, the website of the Urban Planning Service of the city of Valencia, the Municipal Historical Archive of Valencia, and the Historical Archive of the Valencian Architects Society, but also unexpected references are shared, pointing out the information that has been retrieved and its reliability. Additionally, relevant information must be obtained with an on-site data collection. This field work is essential not only to prove the accuracy of the abovementioned data but also to define some of the parameters related to the building vulnerability.The built database, included in a GIS system, has been used by the authors for seismic risk studies. This procedure can be implemented in future assessments at an urban scale.

show abstract

Seismic performance of masonry residential buildings in Lorca’s city centre, after the 11th May 2011 earthquake

Cited by 21 publications

References 7 publications

Earthquake risk scenarios of the Ciutat Vella District in Valencia, Spain

Earthquake risk scenarios of the Ciutat Vella District in Valencia, Spain

A simplified approach for including the incidence angle effect in seismic risk assessment

Mapping an Urban City Centre for Seismic Risk Assessment: Application to Valencia (Spain)

Contact Info

Product

Resources

About