Life-cycle cost assessment of optimally designed reinforced concrete buildings under seismic actions

Mitropoulou, Chara Ch.; Lagaros, Nikos D.; Papadrakakis, Manolis

doi:10.1016/j.ress.2011.04.002

Cited by 126 publications

(67 citation statements)

References 34 publications

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“…For this purpose, the values of the maximum interstory drifts and floor accelerations need to be calculated for three hazard levels (2/50, 10/50, and 50/50). The structural performance of each optimized design and for each hazard level is obtained by means of multi-stripe incremental dynamic analysis (Mitropoulou Ch et al, 2011) using scaled natural records for each hazard level (see Tables 2-4); relying on S A (T 1 , 5%) of the Eurocode 8 response spectrum for each hazard level, respectively. The relative scale of records' two components is preserved implementing the following procedure, the record's component with the highest S A (T 1 , 5%) is scaled first, and the same scaling factor is assigned to the second component in order to preserve their relative ratio.…”

Section: Life-cycle Cost Assessment Resultsmentioning

confidence: 99%

“…In this study, LCCA is used for assessing the optimized performancebased designs based on the total cost which accounts for the initial and the life-cycle cost of the structures. LCCA refers to the possible damages caused by earthquake events that might occur during the life span of the structure (Mitropoulou Ch et al, 2011). Therefore, non-linear dynamic analyses are performed for computing the structural response in strong seismic events.…”

Section: Introductionmentioning

confidence: 99%

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Life-Cycle Cost Model and Design Optimization of Base-Isolated Building Structures

Mitropoulou

Lagaros

2016

Front. Built Environ.

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Design of economic structures adequately resistant to withstand during their service life, without catastrophic failures, all possible loading conditions and to absorb the induced seismic energy in a controlled manner, was subjected to intensive research so far. Costly and extremely sensitive equipment, vital in commerce, business, education, and/or health care represent the contents of the contemporary structural systems. Frequently, structures themselves are less valuable than their contents. Moreover, following a catastrophic natural disaster, local communities requires that communication and emergency centers, hospitals, police, and fire stations to be fully operational. In conventional constructions, high floor accelerations are encountered in case of stiff buildings or large interstory drifts in flexible ones. These structural performance characteristics cause difficulties in protecting both building and its contents. As an efficient alternative design practice, base-isolated structures are considered, compared to the conventional fixed-base one. A critical evaluation of optimized fixed and base-isolated reinforced concrete buildings is performed in this study, with respect to the initial and total cost taking into account the life-cycle cost.

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Section: Life-cycle Cost Assessment Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Life-Cycle Cost Model and Design Optimization of Base-Isolated Building Structures

Mitropoulou

Lagaros

2016

Front. Built Environ.

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“…Evaluar el costo total esperado durante la vida útil de las estructuras es actualmente un gran reto para los ingenieros civiles debido a que las estructuras son diseñadas para que tengan una vida útil relativamente amplia, aproximadamente entre 50 y 75 años (American Society of Civil Engineers ASCE, 2010). Este tema ha sido ampliamente estudiado en las últimas décadas por diversos autores como, por ejemplo: Akta et al, 2001;Ang, 2011;Mitropoulou et al, 2011;Lagaros, 2007;Wen y Kang, 2001a, 2001bBaron y Frangopol, 2015;Esteva et al, 2011;Montiel y Ruiz, 2007; sin embargo, estás metodologías están generalmente limitadas a la aplicación de algunos ejemplos particulares. El costo total, como se trata aquí, incluye el costo inicial y el costo por daños causados por futuros sismos.…”

Section: Introductionunclassified

Factores De Carga Óptimos Para El Diseño Sísmico De Edificios

Mora¹,

Ruiz²

2018

RIS

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RESUMENEn el presente trabajo se revisan las combinaciones de carga para el diseño de edificaciones que se establecen en el Reglamento de Construcciones del Distrito Federal (RCDF-2004) y sus Normas Técnicas Complementarias (NTC-2004). Se proponen nuevos factores de carga para que se especifiquen en la próxima versión del (RCDF). Se revisa la combinación de carga gravitacional (carga muerta más carga viva) y la combinación de carga por sismo (carga muerta, carga viva y carga por sismo). Se propone una metodología para establecer factores y combinaciones óptimos de carga que garanticen el mínimo costo total esperado durante la vida útil de la estructura y que la probabilidad de falla sea al menos igual a la implícita en el RCDF-2004. Para la estimación de la confiabilidad estructural se hace uso de las Redes Neuronales Artificiales.Palabras clave: combinación de carga; probabilidad de falla; costo total esperado; diseño sísmico; Redes Neuronales Artificiales OPTIMAL LOAD FACTORS FOR SEISMIC DESIGN OF BUILDINGS ABSTRACTThe load factors and load combinations established in the Mexico City Building Code (MCBC) and its Complementary Technical Standards are revised. New load and resistance factors are proposed to be specified in the next version of the MCBC. The combination of gravitational loads are considered (dead load plus live load) and the combination of earthquake load is also reviewed. A reliabilitybased development of load factors for the combination of seismic and gravity loads is presented. The procedure aims at minimizing the total expected life-cycle cost of buildings having a minimum value of probability of failure equal to the implicit probability in the MCBC. The structural reliability is estimated using Artificial Neural Networks.

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“…Researchers [7,8] have already emphasized the use of nonlinear analysis procedures in estimating the structural capacities of the existing and retrofitted structures subjected to various earthquake loads. Pushover analysis is generally applied to regular structures.…”

Section: Introductionmentioning

confidence: 99%

Assessment and rehabilitation of the Volos municipal theater according to the Greek Retrofitting Code

Maraveas

Tasiouli²,

Miamis³

2013

WIT Transactions on the Built Environment

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The main objective of the present study is the assessment and retrofit of an existing reinforced concrete building. In particular, the study concerns the municipal theater of the city of Volos, Greece and it was carried out following the provisions and requirements of the Greek Retrofitting Code (KAN.EPE.), which adopts the Performance Based Design (PBD) concept. The theater was built during the 70s and was designed according to the Greek Royal Decrees of 1954 and 1959. The theater consists of the stage and the auditorium, which were analyzed independently, because they constitute two disjoint reinforced concrete (RC) structures. Their structural system consists of spatial frames and shear walls. The columns and the beams are simulated with beam elements with concentrated plasticity and the shear walls with equivalent diagonal truss elements which simulate the shear behavior of the wall structural element. Nonlinear static (Pushover) analysis is applied in order to estimate the seismic performance of the two structures for two performance objectives (A2 and B1 according to the provisions of KAN.EPE.). These correspond to the "Operational" and "Life Safety" performance levels for seismic hazard levels with a 50% and 10% probability of exceedance in 50 years, respectively. A retrofitting scenario is proposed for both the stage and the auditorium in order for the performance objectives to be met. It includes concrete jacketing of certain beams, columns and shear walls as well as strengthening of specific beams with fiber-reinforced polymers (FRPs).

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Life-cycle cost assessment of optimally designed reinforced concrete buildings under seismic actions

Cited by 126 publications

References 34 publications

Life-Cycle Cost Model and Design Optimization of Base-Isolated Building Structures

Life-Cycle Cost Model and Design Optimization of Base-Isolated Building Structures

Factores De Carga Óptimos Para El Diseño Sísmico De Edificios

Assessment and rehabilitation of the Volos municipal theater according to the Greek Retrofitting Code

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