Numerical simulation of shaking table tests on 3D reinforced concrete structures

Bayhan, Beyhan

doi:10.12989/sem.2013.48.2.151

Cited by 8 publications

(12 citation statements)

References 10 publications

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“…It is the symmetric version of the asymmetric test structure that was experimentally and analytically verified in the Blind Prediction Test over the course of 15th World Conference on Earthquake Engineering. In their study, Bayhan and Özdemir (2013) predicted the displacement waveform of the test structure reasonably well under four successive intensity-increasing ground motion excitations on the shake table and were ranked second out of 38 participants.…”

Section: Seismic Response Of Short- and Long-period Structuresmentioning

confidence: 93%

“…The short-period fixed-base structure studied herein is a single-story, single-bay, three-dimensional reinforced concrete structure (Figure 7) that is identical to the structure investigated in Bayhan (2013) and Bayhan and Özdemir (2013). It is the symmetric version of the asymmetric test structure that was experimentally and analytically verified in the Blind Prediction Test over the course of 15th World Conference on Earthquake Engineering.…”

Section: Seismic Response Of Short- and Long-period Structuresmentioning

confidence: 99%

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Significance of Ground Motion Scaling Parameters on Amplitude of Scale Factors and Seismic Response of Short- and Long-Period Structures

2019

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In this study, an ensemble of ground motions is selected and scaled in order to perform code-compliant bidirectional Nonlinear Response History Analysis for the design purpose of both short- and long-period structures. The followed scaling method provides both the requirements of the Turkish Earthquake Code regarding the scaling of ground motions and compatibility of response spectra of selected ground motion pairs with the target spectrum. The effects of four parameters, involved in the followed scaling method, on both the amplitude of scale factors and seismic response of structures are investigated. These parameters are the number of ground motion records, period range, number of periods used in the related period range, and distribution of weight factors at the selected periods. In the analyses, ground motion excitations were applied to both fixed-base and seismically isolated structure models representative of short- and long-period structures, respectively. Results revealed that both the amplitudes of scale factors and seismic response of short-period structures are more prone to variation of investigated parameters compared to those of long-period structures.

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Section: Seismic Response Of Short- and Long-period Structuresmentioning

confidence: 93%

Section: Seismic Response Of Short- and Long-period Structuresmentioning

confidence: 99%

Significance of Ground Motion Scaling Parameters on Amplitude of Scale Factors and Seismic Response of Short- and Long-Period Structures

2019

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“…The tensile strength of concrete is neglected. The representative material models (Bayhan 2013) are given in Figure 4.…”

Section: Analytical Modelsmentioning

confidence: 99%

“…For this purpose, analytical models of a generic reference frame with rigid and flexible joints are subjected to earthquake ground motions for comparison. The efficiency of the employed model to represent the behavior of a flexible joint was previously verified with both static (Theiss 2005, Çelik and Ellingwood 2009, Hassan 2011, Park and Mosalam 2013 and shaking table tests (Yavari 2011, Bayhan 2013, Bayhan et al 2015. The variation in seismic response of the analytical models due to different modeling approaches is examined through demand parameters obtained from the dynamic analyses.…”

Section: Introductionmentioning

confidence: 98%

Impact of Joint Modeling Approach on Performance Estimates of Older-Type RC Buildings

Bayhan

Ozdemir

Gülkan³

2017

Earthquake Spectra

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The behavior of beam-column connections has usually been ignored in the modeling process due to its complexity and relatively recent awareness of its possible impact on response. This study presents the features of modeling unreinforced beam-column joints in estimating seismic demands. A representative RC frame is subjected to strong ground motions. Through nonlinear dynamic analyses, base shear, roof displacement, inter-story drift and joint rotation are noted. The dynamic analyses are performed comparatively through two analytical models with rigid and flexible joint assumptions. In the flexible joint model, shear deformation at the beam-column joint and bond-slip deformation at the beam-column interface are simulated through a previously verified analytical representation. Results indicate that introducing unreinforced beam-column joint behavior to the model may lead to almost two times larger seismic demands compared to those obtained from rigid connection assumption. Thus, the performance assessment of such buildings may conclude erroneously with underestimated seismic demands and damage levels when inelastic actions in the joints are ignored. However, in some cases, lower seismic demands can also be obtained for the flexible joint model.

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“…Este tipo de concursos se han realizado desde hace décadas [2], destacando recientemente los destinados a estudiar los efectos sísmicos en pequeñas estructuras a escala real [3][4][5][6][7][8], y constituyen una manera eficaz para comparar las soluciones obtenidas mediante diferentes métodos, pudiendo contrastar así el efecto de las distintas hipótesis contempladas en cada uno. Del mismo modo, ayudan a definir las consecuencias para la seguridad estructural según el empleo de uno u otro método.…”

Section: Introductionunclassified

Análisis numérico del proceso de fallo de una losa de hormigón armado con modelos de fractura no lineal

Ortega

Alonso

Ruiz

2022

hya

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El concurso “Cátedra ECSA”, organizado por la Universidad Politécnica de Valencia en 2018, planteaba estimar la carga máxima y el modo de rotura de una losa cuadrada de hormigón armado apoyada en cuatro puntos, con una carga central y otra en un vértice. Junto a este vértice se encontraba un orificio y los laterales correspondientes se reforzaban con un zuncho, aparte de los emparrillados superior e inferior. La losa real se ensayó tras la presentación de las soluciones de los participantes, resultando ganadora la más próxima al resultado experimental. Esta solución se alcanzó empleando un modelo de elementos finitos que considera el comportamiento cohesivo o cuasifrágil de la fractura del hormigón y la definición geométrica individual de las barras de armado, utilizando el programa comercial ATENA. El modelo permite seguir la evolución con la carga de la deformación de la losa, de la concentración de daño en el hormigón y el proceso de plastificación de las armaduras de acero. El resultado muestra el fallo de la losa por punzonamiento en los vértices contrarios al del orificio, protegido eficazmente por el zuncho. El fallo está controlado por la plastificación de la armadura inferior.

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Numerical simulation of shaking table tests on 3D reinforced concrete structures

Cited by 8 publications

References 10 publications

Significance of Ground Motion Scaling Parameters on Amplitude of Scale Factors and Seismic Response of Short- and Long-Period Structures

Significance of Ground Motion Scaling Parameters on Amplitude of Scale Factors and Seismic Response of Short- and Long-Period Structures

Impact of Joint Modeling Approach on Performance Estimates of Older-Type RC Buildings

Análisis numérico del proceso de fallo de una losa de hormigón armado con modelos de fractura no lineal

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