Seismic Fragility of LRC Frames With and Without Masonry Infill Walls

Mosalam, Khalid M.; Ayala, Gustavo; White, Richard N.; Roth, Christopher

doi:10.1080/13632469708962384

Cited by 55 publications

(44 citation statements)

References 6 publications

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“…Their influence is recognized in the global behaviour of RC frames subjected to earthquake loadings (Asteris and Cotsovos 2012;Crisafulli 1997b;Davis et al 2004;Kakaletsis and Karayannis 2008;Manfredi et al 2012;Mosalam et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Modelling of masonry infill walls participation in the seismic behaviour of RC buildings using OpenSees

Furtado

Rodrigues

Arêde

2015

Int J Adv Struct Eng

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Recent earthquakes show that masonry infill walls should be taken into account during the design and assessment process of structures, since this type of nonstructural elements increase the in-plane stiffness of the structure and consequently the natural period. An overview of the past researches conducted on the modelling of masonry infilled frame issues has been done, with discussion of past analytical investigations and different modelling approaches that many authors have proposed, including micro-and macro-modelling strategies. After this, the present work presents an improved numerical model, based on the Rodrigues et al. (J Earthq Eng 14:390-416, 2010) approach, for simulating the masonry infill walls behaviour in the computer program OpenSees. The main results of the in-plane calibration analyses obtained with one experimental test are presented and discussed. For last, two reinforced concrete regular buildings were studied and subjected to several ground motions, with and without infills' walls.

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Section: Introductionmentioning

confidence: 99%

Modelling of masonry infill walls participation in the seismic behaviour of RC buildings using OpenSees

Furtado

Rodrigues

Arêde

2015

Int J Adv Struct Eng

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“…buildings with particular importance, structures for which no empirical data are available (innovative structural designs, sub-standard and low strength RC structures). Different researchers Mosalam et al (1997), Lang (2002), Gardoni et al (2003), Franchin et al (2003), Rossetto and Elnashai (2005), Erberik and Elnashai (2005), Erberik (2008), Celik and Ellingwood (2008) have developed fragility curves for the gravity loaded design (GLD) structures of developed countries by using detailed analytical approach. The type of method chosen in these studies for fragility analysis depends not only on the objective of the assessment, but also on the availability of data and technology.…”

Section: Introductionmentioning

confidence: 99%

Seismic fragility assessment of existing sub-standard low strength reinforced concrete structures

Ahmad

Kyriakides

Pilakoutas

et al. 2015

Earthq. Eng. Eng. Vib.

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An analytical seismic fragility assessment framework is presented for the existing low strength reinforced concrete structures more common in the building stock of the developing countries. For realistic modelling of such substandard structures, low strength concrete stress-strain and bond-slip capacity models are included in calibrating material models. Key capacity parameters are generated stochastically to produce building population and cyclic pushover analysis is carried out to capture inelastic behaviour. Secant period values are evaluated corresponding to each displacement step on the capacity curves and used as seismic demand. A modiÞ ed capacity spectrum method is adopted for the degrading structures, which is further used to evaluate peak ground acceleration from back analysis considering each point on the capacity curve as performance point. For developing fragility curves, the mean values of peak ground acceleration are evaluated corresponding to each performance point on the series of capacity curves. A suitable probability distribution function is adopted for the secant period scatter at different mean peak ground acceleration values and probability of exceedance of limit states is evaluated. A suitable regression function is used for developing fragility curves and regression coefÞ cients are proposed for different conÞ dence levels. Fragility curves are presented for a low rise pre-seismic code reinforced concrete structure typical of developing countries.

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“…(3) The analytical method uses a numerical analysis to simulate the behavior of structures in earthquakes. A variety of analytic procedures have been used, from elastic analysis (Mosalam et al, 1997) to adaptive pushover analysis (Rossetto and Elnashai, 2005) to nonlinear time history analysis (Seyedi et al, 2010). (4) The hybrid method involves the combination of one or more of the other three methods.…”

Section: Introductionmentioning

confidence: 99%

Seismic Fragility Assessment of RC Moment-Resisting Frames Designed According to the Current Chinese Seismic Design Code

Jiang

Chen

2012

Journal of Asian Architecture and Building Engineering

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Seismic fragility was assessed for 72 RC moment-resisting frame building structures designed according to the current Chinese seismic design code for buildings, taking into account the uncertainty of the structural material strength and earthquake ground motions. The site soil type, the number of stories, and the seismic protection intensity were considered to be the main design variables of the reference structures. Fragilities for four damage levels, i.e., fully operational, operational, repairable, and collapse prevention, are developed in this study. The global seismic damage index, which reflects the effects of individual structural components, and the maximum inter-story drift ratio, which is closely related to the seismic damage of structural and nonstructural components, was employed as the damage identifiers. For each frame structure, the probability of exceeding each damage level in an earthquake with a specified PGA was determined by conducting nonlinear time history analysis. Fragility curves for the four damage levels were derived by regression analysis using the nonlinear least-squares method. The structural reliability of RC frames against earthquakes was examined using the developed fragility curves. The results indicate that seismic performance objectives for RC frame structures designed in accordance with the current Chinese code can be achieved with good reliability.

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Seismic Fragility of LRC Frames With and Without Masonry Infill Walls

Cited by 55 publications

References 6 publications

Modelling of masonry infill walls participation in the seismic behaviour of RC buildings using OpenSees

Modelling of masonry infill walls participation in the seismic behaviour of RC buildings using OpenSees

Seismic fragility assessment of existing sub-standard low strength reinforced concrete structures

Seismic Fragility Assessment of RC Moment-Resisting Frames Designed According to the Current Chinese Seismic Design Code

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