Damage potential and vulnerability functions of strategic buildings in the city of Algiers

Remki, Mustapha; Benouar, Djillali

doi:10.1007/s12205-014-0184-0

Cited by 9 publications

(3 citation statements)

References 7 publications

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“…The calculation of prototype pushover and capacity curves is achieved through a series of nonlinear static (pushover) analyses with several variations in the material properties and the building geometry in order to establish an adequate level of confidence in the results (Remki and Benouar 2014).…”

Section: Capacity Curvesmentioning

confidence: 99%

Analytically Derived Fragility Curves and Damage Assessment of Masonrybuildings

Remki

Kehila

2017

Facing the Challenges in Structural Engineering

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Abstract. The latest earthquake disasters have highlighted, once again, poor functioning of the existing masonry structures, and the need to intervene all these structures which have been designed with old regulatory criteria, inadequate or those that have been built before the emergence of design codes. The significant progress made in new criteria of earthquake resistant design, should be extended to all the existing structures, it is therefore essential to identify the degree of seismic performance. Unreinforced masonry (URM) buildings represent a significant portion of the residential structures in Algeria, accounting for more than 60% of existing buildings. In addition to significant population, the brittle nature of URM buildings further supports a thorough consideration of seismic response given the susceptibility to severe failure modes. Currently, there is a pressing need for analytically based fragility curves for URM buildings. In order to improve the estimation of damage state probabilities through the development of simulation-based masonry fragilities, an extensive literature survey is conducted on pushover analysis of URM structures. Structural response is evaluated using an advanced capacity spectrum method. Capacity, demand, and response are thus derived analytically and response data is used to generate an improved and uniform set of fragility curves for use in risk assessment. Seismic fragility curves are expressed in multiple forms for wide range of use in loss-assessment applications. Results are discussed and compared with other relationships developed in the literature.

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Section: Capacity Curvesmentioning

confidence: 99%

Analytically Derived Fragility Curves and Damage Assessment of Masonrybuildings

Remki

Kehila

2017

Facing the Challenges in Structural Engineering

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“…Seismic vulnerability assessment for past earthquake in Northeast Algeria has been relatively newly initiated, starting on 1992 by Farsi and Belazougui ( 1992 ). The current work consists of regional and local studies, mainly based on seismic vulnerability assessments by (Bechtoula and Ousalem 2005 ; Laouami et al 2006 ; Harbi et al 2007a , 2007b ; Belazougui 2008 ; Hellel et al 2010 ; Meslem et al 2012 ; Mehani et al 2013 ; Boukri et al 2013 ; Remki and Benouar 2014 ; Hamidatou et al 2017 ; Chimouni et al 2018 ; Allali et al 2018 ; Hichem et al 2019 ; Akkouche 2019 ; Amari et al 2020 ). We know that the first major hazard that threatens the Mila region is landslide, in this case several studies have assessed landslides’ risk as well as earthquake-triggered landslides’ risk in the region (Marmi et al 2008 ; Atmania et al 2010 ; Guemache et al 2010 ; Semmane et al 2012 ; Merghadi et al 2018 ; Benfedda et al 2021 ; Tebbouche et al 2022 ; Smail et al 2022 ; Bounemeur et al 2022 ; Medhat et al 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Post-earthquake damage classification and assessment: case study of the residential buildings after the Mw = 5 earthquake in Mila city, Northeast Algeria on August 7, 2020

Hamidatou

Chaker

Hallal

et al. 2022

Bull Earthquake Eng

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On August 7th, 2020, a magnitude Mw = 5.0 earthquake shook 5 km north of Mila city center, northeast of Algeria, causing substantial damage directly to structures, and indirectly from induced impacts of landslides and rock falls, ultimately disrupt to everyday civilian life. Given the recent significant seismic occurrences in the region, a detailed and comprehensive examination and assessment of post-earthquake damage is critical to Algeria. This is primarily because masonry, concrete, and colonial-era structures are sensitive to horizontal motions caused by seismic waves, and because masonry and concrete structures constitute a substantial portion of today’s Algeria's build environment. We present a post-earthquake investigation of the Mila earthquake, starting from the earthquake source, and a catalogue of buildings type, damage categorization, and failure patterns of residential structures in Mila's historic old town, where colonial-era brick buildings prevail. We find that structures that represent notable architectural achievements were severely damaged as a result of the earthquake. Data acquired during the immediate post-earthquake analysis was also evaluated and discussed. The graphical representations of the damages are detailed and complemented by photos. This seismic event has shown the fragility of Algeria's building stock, which must be addressed properly in future years. This study reports on an overall estimate of residential buildings in Mila's lower city, as well as an evaluation of the seismic vulnerability of three neighborhood towns (El-Kherba, Grareme-Gouga, and Azzeba). A generic database for graphical surveys and geometric research was developed and implemented making it possible to evaluate the shear strength on-site. The broad observations, collated data, and consequences were then loaded into the 3Muri structural verification program. Nonlinear static analysis was conducted to analyze probable failure paths and compare the real damage to the software results.

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“…Thousands of people are usually killed or injured in such earthquakes, with many more becoming homeless. The 6.8 magnitude Boumerdes earthquake that occurred in May 2003, caused significant damage to buildings in Zemmouri, Boumerdes, and Algiers prefectures, with a death toll of 2278, with 6782 injured, and with 130000 homeless and also with thousands of collapsed buildings [1][2][3][4][5]. Almost all old buildings, built prior to implementation of the new Algerian seismic design code RPA 99/version 2003 [6], suffered some kind of heavy damage.…”

Section: Introductionmentioning

confidence: 99%

Seismic vulnerability of an existing strategic RC building using non linear static and dynamic analyses

Lakušić¹

2020

JCE

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Seismic vulnerability of an existing strategic RC building using non linear static and dynamic analyses Algeria is the most seismically active country in the northern part of Africa, and it has so far suffered a number of catastrophic earthquakes. The 2003 Boumerdes earthquake, magnitude 6.8, was the most devastating earthquake that occurred near the capital Algiers, killing and injuring thousands of people. Many existing strategic RC buildings were severely damaged and hence made unfit for use after the earthquake. Seismic vulnerability of an old RC concrete strategic building designed without consideration for any seismic loading is assessed in the paper.

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Damage potential and vulnerability functions of strategic buildings in the city of Algiers

Cited by 9 publications

References 7 publications

Analytically Derived Fragility Curves and Damage Assessment of Masonrybuildings

Analytically Derived Fragility Curves and Damage Assessment of Masonrybuildings

Post-earthquake damage classification and assessment: case study of the residential buildings after the Mw = 5 earthquake in Mila city, Northeast Algeria on August 7, 2020

Seismic vulnerability of an existing strategic RC building using non linear static and dynamic analyses

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