Seismic vulnerability: theory and application to Algerian buildings

Mébarki, Ahmed; Boukri, M.; Laribi, A.; Farsi, Mohammed N.; Belazougui, M.; Kharchi, Fattoum

doi:10.1007/s10950-013-9377-0

Cited by 19 publications

(4 citation statements)

References 17 publications

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“…Of these parameters, the most relevant is the compressive strength, which corresponds to the strength of the masonry infill panel as a whole, not just the masonry units. This parameter shows high variability among the relevant studies consulted [1,2,4,9,[15][16][17][18][19]21] and is determined based on the shear strength calculated under diagonal compression. The initial Young's modulus also exhibits high variability and has been determined to be 1000 times the value of the compressive strength, as recommended in previous works [34,35].…”

Section: Description Of the Corner Buildingmentioning

confidence: 99%

“…This is especially important in regard to structures that are located in areas of high seismic hazard. On the other hand, in Latin America and in other regions of the world with developing countries, reinforced concrete buildings are frequently built with informal construction practices given the low technological level required [1][2][3]. Such buildings have a low ductility, which makes them vulnerable to damage [4].…”

Section: Introductionmentioning

confidence: 99%

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Irregularity of the Distribution of Masonry Infill Panels and Its Effect on the Seismic Collapse of Reinforced Concrete Buildings

et al. 2021

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On 16 April 2016, an earthquake of Mw 7.8 shook the coast of Ecuador, causing the destruction of buildings and a significant number of casualties. Following a visit by the authors to the city of Portoviejo during the debris removal and recovery stage, it was noted that several reinforced concrete buildings located on corners had collapsed in the central part of the city. These buildings were characterized by the presence of masonry at the edges of the buildings but not between the two mostly open-plan facades on the corner for practical reasons. This article reviews the effect of masonry infill panels on the seismic response of reinforced concrete structures. For this, a model that contains the geometric and mechanical characteristics typical of collapsed buildings was generated and subjected to nonlinear analysis, with both static and dynamic increments. The results show the clear influence of the masonry infill panels on the structural response through the torsional behavior that is reflected in the evolution of the floor rotations. Finally, dynamic incremental analysis is used to obtain the collapse fragility curve of the building, and a new damage measure based on floor rotations is proposed.

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Section: Description Of the Corner Buildingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Irregularity of the Distribution of Masonry Infill Panels and Its Effect on the Seismic Collapse of Reinforced Concrete Buildings

et al. 2021

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“…Nowadays, the application of GIS is a growing trend and even a requirement for building damage estimation. GIS is widely used to manage and analyse disaster exposure data, which greatly improves the efficiency of use of such data (Mebarki et al, 2014;Panahi et al, 2014;Armenakis, 2013;Alam et al, 2013). The organization of the exposure data in a GIS has been found to significantly improved loss estimation speed and accuracy.…”

Section: Related Researchmentioning

confidence: 99%

A quick earthquake disaster loss assessment method supported by dasymetric data for emergency response in China

Xu¹,

An²,

Nie³

2016

Nat. Hazards Earth Syst. Sci.

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Abstract. Improving earthquake disaster loss estimation speed and accuracy is one of the key factors in effective earthquake response and rescue. The presentation of exposure data by applying a dasymetric map approach has good potential for addressing this issue. With the support of 30 × 30 areal exposure data (population and building data in China), this paper presents a new earthquake disaster loss estimation method for emergency response situations. This method has two phases: a pre-earthquake phase and a co-earthquake phase. In the pre-earthquake phase, we precalculate the earthquake loss related to different seismic intensities and store them in a 30 × 30 grid format, which has several stages: determining the earthquake loss calculation factor, gridding damage probability matrices, calculating building damage and calculating human losses. Then, in the co-earthquake phase, there are two stages of estimating loss: generating a theoretical isoseismal map to depict the spatial distribution of the seismic intensity field; then, using the seismic intensity field to extract statistics of losses from the pre-calculated estimation data. Thus, the final loss estimation results are obtained. The method is validated by four actual earthquakes that occurred in China. The method not only significantly improves the speed and accuracy of loss estimation but also provides the spatial distribution of the losses, which will be effective in aiding earthquake emergency response and rescue. Additionally, related pre-calculated earthquake loss estimation data in China could serve to provide disaster risk analysis before earthquakes occur. Currently, the precalculated loss estimation data and the two-phase estimation method are used by the China Earthquake Administration.

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“…Based on DPM, the number of deaths under di erent building damages can be calculated. This approach is often constructed by using the geographic information system (GIS) technology [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Post-Earthquake People Loss Evaluation Based on Seismic Multi-Level Hybrid Grid: A Case Study on Yushu Ms 7.1 Earthquake in China

et al. 2016

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People loss is one of the most important information that the government concerns after an earthquake, because it a ects appropriate rescue levels. However, existing evaluation methods often consider an entire stricken region as a whole assessment area but disregard the spatial disparity of in uencing factors. As a consequence, results are inaccurately evaluated. In order to address this problem, this paper proposes a post-earthquake evaluation approach of people loss based on the seismic multi-level hybrid grid (SMHG). In SMHG, the whole area is divided into grids at di erent levels with various sizes. In this manner, the e ciency of data management is improved. With SMHG, disaster statistics can be easily counted under both the administrative unit and per unit area. The proposed approach was then applied to investigate Yushu Ms7.1 earthquake in China. Results revealed that the number of deaths varied with di erent exposure grids. Among all the di erent grids, we found that using the 50×50 exposure grid can get the most satisfactory results, and the estimated number of deaths was 2,203, with an 18.3% deviation from the actual loss. People loss results obtained through the proposed approach were more accurate than those obtained through traditional GIS-based methods.

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Seismic vulnerability: theory and application to Algerian buildings

Abstract: International audienc

Cited by 19 publications

References 17 publications

Irregularity of the Distribution of Masonry Infill Panels and Its Effect on the Seismic Collapse of Reinforced Concrete Buildings

Irregularity of the Distribution of Masonry Infill Panels and Its Effect on the Seismic Collapse of Reinforced Concrete Buildings

A quick earthquake disaster loss assessment method supported by dasymetric data for emergency response in China

Post-Earthquake People Loss Evaluation Based on Seismic Multi-Level Hybrid Grid: A Case Study on Yushu Ms 7.1 Earthquake in China

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