Evaluation of inelastic response of 3D single-story R/C frames under bi-directional excitation using different orientation schemes

Kostinakis, Konstantinos; Athanatopoulou, Asimina; Avramidis, Ioannis

doi:10.1007/s10518-012-9392-5

Cited by 32 publications

(14 citation statements)

References 15 publications

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“…[17][18][19], as well as of the inelastic response and damage level, e.g. [20][21][22][23][24]. In a preliminary study, Fontara et al [25] examined the interrelationship between commonly used seismic intensity measures and the Park and Ang overall structural damage index of an asymmetric 3D single-storey R/C building taking into account several incident angles.…”

Section: Introductionmentioning

confidence: 99%

Correlation between ground motion intensity measures and seismic damage of 3D R/C buildings

Kostinakis

Athanatopoulou

Morfidis

2015

Engineering Structures

120

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Section: Introductionmentioning

confidence: 99%

Correlation between ground motion intensity measures and seismic damage of 3D R/C buildings

Kostinakis

Athanatopoulou

Morfidis

2015

Engineering Structures

120

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“…The results of their study indicated that damage induced to the buildings was affected by the incident angle as well as DI definition. This was also evaluated by Kostinakis and Athanatopoulou () for RC frames using modified Park and Ang () damage criteria. The results showed that the procedure of extreme stresses proposed by Kostinakis et al () was more efficient for the design of RC frame elements.…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution of ductility demand and damage index in 3D RC frame structures considering directionality effects

Emami

Halabian

2015

Struct. Design Tall Spec. Build.

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Most of studies that examined the influence of incidence angles of bidirection ground excitations were focused on the estimation of engineering demand parameters (EDPs) only along two orthogonal axes varying ground motion orientations. However, variations of the EDPs have not been assessed in a desired horizontal angular distance from a reference direction that could be different than the incident angle. Furthermore, the structural demands along the height of structures were not also studied for different angles of the incident of ground motion. The current paper aims to assess these issues introducing spatial distribution of ductility demands and damage index induced to multi-storey reinforced concrete frames due to incidence-dependent bidirection ground excitations. Employing the concept of 3D archetypical frames, several pushover analyses and nonlinear response history analyses were conducted using two sets of ground motions classified as nearfield and far-field records. The results of these comprehensive parametric analyses including the EDPs along different angular distances from a reference point were employed to perform regression analyses obtaining the critical EDPs. Several expressions for the critical EDPs (mostly oriented in non-principal planar directions) are suggested in terms of the orthogonal peak responses assumed to be assessed corresponding to the principal axes. Different expressions proposed in this study could be used to predict the critical ductility of structures by combining the structural ductility in two perpendicular directions when they are assessed due to the principal directions of excitations.

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“…Many studies investigated the critical incidence angle of the two horizontal components of earthquakes acting on r.c. framed buildings [6][7][8][9][10]. The results indicate that often the nonlinear dynamic response predicted by seismic codes is not conservative, deriving from the combination of effects due to the horizontal components applied separately along each structural axis (e.g.…”

Section: Introductionmentioning

confidence: 97%

Multicomponent nonlinear incremental dynamic analysis of r.c. spatial framed structures subjected to near-fault earthquakes

Mazza¹,

Mazza²,

Liguori³

2016

ces

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Fling-step and forward-directivity effects of near-fault ground motions can produce long duration intense velocity pulses in the horizontal direction, making unexpected ductility demand in reinforced concrete (r.c.) spatial framed structures designed in accordance with current seismic codes. In practice, simplified percentage-rule methods, in which a coefficient indicates the mutual participation between the two horizontal ground motions, are generally used to deal with the problem of the critical incidence angle of bi-directional ground motions. In order to investigate the orientation of the horizontal components of near-fault earthquakes that yields the maximum inelastic structural response, this work considers six-and twelve-storey r.c. framed buildings with symmetric plan are designed for a high-risk seismic region in line with the provisions of the Italian seismic code. A lumped plasticity model is used to describe the inelastic behaviour of the r.c. frame members, with flat surfaces approximating the axial load-biaxial bending moment domain at the end sections where inelastic deformations are expected. A multicomponent nonlinear incremental dynamic analysis is carried out with reference to different incidence angles of bi-directional earthquakes, which are scaled to four intensity levels to encompass a wide range of structural behaviours. To this end, seven nearfault ground motions are selected, based on the design hypotheses adopted for the test structures.

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Evaluation of inelastic response of 3D single-story R/C frames under bi-directional excitation using different orientation schemes

Cited by 32 publications

References 15 publications

Correlation between ground motion intensity measures and seismic damage of 3D R/C buildings

Correlation between ground motion intensity measures and seismic damage of 3D R/C buildings

Spatial distribution of ductility demand and damage index in 3D RC frame structures considering directionality effects

Multicomponent nonlinear incremental dynamic analysis of r.c. spatial framed structures subjected to near-fault earthquakes

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