Displacement ductility for seismic design of RC walls for low-rise housing

Carrillo, Julián; González, Giovanni; Rubiano, Astrid

doi:10.1590/s1679-78252014000400010

Cited by 14 publications

(8 citation statements)

References 5 publications

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“…Commonly, the longitudinal reinforcing steel in reinforced concrete shear walls yields at different locations along the wall cross-section and, thus, the force-deformation response does not articulate a welldefined yield point. For this reason, for reinforced concrete shear walls, the yield displacement is identified by the drift at the development of either 75% or 80% of the maximum strength (e.g., Salonikios et al 2000, Krolicki et al 2011, Kuang and Ho 2008and Carrillo et al 2014. Analogously, Priestley (2000) considered the intersection of the secant stiffness through first yield with ultimate strength to estimate an effective yield displacement, which would thus consider experimental data.…”

Section: © Ascementioning

confidence: 99%

“…Analogously, Priestley (2000) considered the intersection of the secant stiffness through first yield with ultimate strength to estimate an effective yield displacement, which would thus consider experimental data. Alternatively, researchers agree on identifying the ultimate drift ratio upon a 20% reduction in peak strength (e.g., Salonikios et al 2000, Hsu and Mansour 2005, Krolicki et al 2011, Kuang and Ho 2008and Carrillo et al 2014). In the present study, therefore, displacement ductility ratio is estimated for the three wall specimens considering the effective yield displacement at the secant stiffness through the measured first experimental yield and the ultimate displacement at about 20% reduction in peak load capacity, as summarized in Faraone et al 2019b.…”

Section: © Ascementioning

confidence: 99%

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Damage Patterns in Squat and Flexural RC Shear Walls

Faraone¹,

Hutchinson²,

Piccinin³

et al. 2020

Structures Congress 2020

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The response of reinforced concrete shear walls, when used as a lateral force resisting element in concrete buildings, may vary according to their detailing and geometry. In the present paper, comparison of the global response and damage distribution of three full-scale reinforced concrete shear wall specimens subjected to simulated seismic loading is presented. One slender and two squat full-scale shear wall specimens of the same wall length were designed and tested as cantilever walls to assess their performance during in-plane simulated seismic action. Axial load was also provided in the amount of about 7% of the wall section capacity to both the slender and one of the squat wall specimens. The second squat wall specimen was tested without axial load to evaluate the effect of compressive force on the walls' lateral behavior. Cross comparison of these three specimens indicates that, despite common misconception, properly detailed squat walls can develop displacement ductility consistent with slender, flexure-dominated walls.Structures Congress 2020 Downloaded from ascelibrary.org by 44.224.250.200 on 08/02/20.

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Section: © Ascementioning

confidence: 99%

Section: © Ascementioning

confidence: 99%

Damage Patterns in Squat and Flexural RC Shear Walls

Faraone¹,

Hutchinson²,

Piccinin³

et al. 2020

Structures Congress 2020

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“…Los principales cambios en relación a los requisitos de muros con capacidad mínima son el uso de cuantías de acero longitudinal y transversal que dependen de la demanda a cortante (V u ) (figura 5a), y la implementación de elementos de borde. Ya que en zonas como la del estudio en donde las demandas sísmicas son bajas, el uso de cuantías de refuerzo mayores o iguales a 0,25 % podría ser excesivo para reducir la fisuras por tensión diagonal (Carrillo, González y Rubiano, 2014), el diseño de los muros se realizó para dos escenarios. En el primero, se permitió el uso de cuantías reducidas de refuerzo en el alma en función de la demanda a cortante.…”

Section: Diseño Estructuralunclassified

Efecto del grado de capacidad de disipación de energía sísmica seleccionado en las cantidades de obra de muros de concreto reforzado

Benjumea

Monroy

Melo

et al. 2017

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Contexto: Para el diseño de muros estructurales de concreto reforzado, la normativa sismoresistente en Colombia permite, en función de la amenaza sísmica del sitio, optar por uno de tres posibles grados de capacidad de disipación de energía (mínima, moderada y especial). Sin embargo, la práctica empleada es la de adoptar el menor grado acorde a la amenaza sísmica. Método: En este trabajo se realizó un estudio analítico del efecto del grado de capacidad de disipación de energía seleccionado durante el diseño de muros estructurales de concreto reforzado, en las cantidades de obra de la estructura y en la capacidad de desplazamiento. El estudio se centró en zonas de amenaza sísmica baja, ya que permite explorar y comparar los tres grados de disipación de energía. En el estudio se incluyeron otras variables como la altura total del muro, el área tributaria y la cuantía mínima de refuerzo adoptada para el alma del muro.Resultados: la cantidad total de acero requerida para los muros con capacidad moderada y especial corresponde, en promedio, a un 77% y 89%, respectivamente, de la cantidad requerida para los muros con capacidad mínima.Conclusiones: es posible lograr reducciones en el peso total de acero requerido al emplear grados de capacidad de disipación moderada y especial comparado con el uso de capacidad de disipación mínima. Además, con esta estrategia se lograr un incremento significativo en la ductilidad del muro.

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“…8. The hysteretic loops show the relationship between the displacement and strength of a system or structure [16]. According to Fig.…”

Section: Load-displacement Hysteretic Curvementioning

confidence: 99%

An innovative joint connecting beam for precast concrete shear wall structures

Wang

et al. 2016

Structural Concrete

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An innovative joint connecting beam for precast concrete shear wall structuresThe precast shear wall structure has outstanding features for green buildings due to its construction convenience, safety, high quality and low pollution. In general, precast concrete shear walls are connected by multiple joints. The joint between precast walls has very strong influence on the whole structure, which calls for more detailed investigation. A new kind of connection -the joint connecting beam -was developed to connect the vertical reinforcement in precast concrete shear wall structures. This innovative connecting method has the advantages of convenient operation and saving steel. To evaluate the performance and for better application of the joint connecting beam, an experiment on seven full-scale specimens was conducted under cyclic loading, including two cast-in-situ walls and five precast walls with varying reinforcement and sectional heights of the joint connecting beam. A comparison was performed between cast-in-situ walls and precast walls with joint connecting beam, focusing on failure mode, hysteretic curve, skeleton curve, bearing capacity, ductility and energy-dissipating capacity. The results show that the joint connecting beam can effectively transfer the load of precast walls, especially for squat precast walls. Moreover, finite element models were developed to simulate the performance of the specimens. The simulation results agree well with experimental results.

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Displacement ductility for seismic design of RC walls for low-rise housing

Cited by 14 publications

References 5 publications

Damage Patterns in Squat and Flexural RC Shear Walls

Damage Patterns in Squat and Flexural RC Shear Walls

Efecto del grado de capacidad de disipación de energía sísmica seleccionado en las cantidades de obra de muros de concreto reforzado

An innovative joint connecting beam for precast concrete shear wall structures

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