An analytical method for the evaluation of the in-plan irregularity of non-regularly asymmetric buildings

Bosco, Melina; Marino, Edoardo M.; Rossi, Pier Paolo

doi:10.1007/s10518-013-9438-3

Cited by 38 publications

(14 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The base shear coefficients for model 1 in each orthogonal direction are 0.532 in the X-direction and 0.455 in the Y-direction; for model 2, they are 0.522 (X) and 0.455 (Y); for model 3, they are 0.421 (X) and 0.455 (Y); for model 4, they are 0.562 (X) and 0.479 (Y); for model 5, they are 0.547 (X) and 0.479 (Y); and for model 6, they are 0.438 (X) and 0.479 (Y). The locations e X and e Y of the center of stiffness and stiffness eccentricity, respectively, and the radii j X ' and j Y ' of torsional stiffness with respect to the center of stiffness are calculated at each story according to the linear static analysis and procedures proposed by Bosco et al 68 The eccentricity indices R eX and R eY (= e Y /j X ' and e X /j Y ', respectively) defined by the Building Standard Law of Japan 69 The building structures are modeled as a pseudo 3-dimensional frame model in which the floor diaphragms are assumed to be rigid in their own planes with no out-of-plane stiffness, and the frames oriented in the X-and Y-directions are modeled independently. A one-component model, with one non-linear flexural spring at each end and one non-linear shear spring at the middle of the line element, is used for all beams, columns, and structural walls.…”

Section: Building Datamentioning

confidence: 99%

Prediction of the peak seismic response of asymmetric buildings under bidirectional horizontal ground motion using equivalentSDOFmodel

Fujii

2018

Japan Architectural Review

View full text Add to dashboard Cite

The applicability of a simplified procedure, namely mode‐adaptive bidirectional pushover analysis (MABPA), to the prediction of the non‐linear peak response of a multistory asymmetric building subjected to bidirectional excitation is discussed. The first part of the paper summarizes the formulation of 2 independent equivalent single‐degree‐of‐freedom models representing the first and second modal responses. The relationship between the critical assumptions of MABPA and the torsional index defined based on mode shape is then discussed. In the latter part of the paper, non‐linear time‐history analyses of 4‐story torsionally stiff (TS) or torsionally flexible asymmetric buildings are described, and the results are compared with the predictions. The results show that MABPA predicts the peak response displacement of only the TS asymmetric buildings satisfactorily. Therefore, MABPA should be considered applicable only to TS buildings. The applicability of MABPA to a given asymmetric building may be evaluated by using the torsional indices of the first 3 modes.

show abstract

Section: Building Datamentioning

confidence: 99%

Prediction of the peak seismic response of asymmetric buildings under bidirectional horizontal ground motion using equivalentSDOFmodel

Fujii

2018

Japan Architectural Review

View full text Add to dashboard Cite

show abstract

“…Out of the methods available in literature [57][58][59][60][61][62], the one proposed by Makarios and Anastassiadis [60,61] is used for the determination of the uncoupled torsional to lateral frequency ratios. According to this method, the uncoupled ratios X hy and X hx , corresponding to the seismic force acting along the y-and x-direction, respectively, are calculated as the ratios of the rigidity radii of gyration r kx and r ky to the mass radius of gyration r m .…”

Section: Prediction Of Seismic Response By Nonlinear Static Methods Ofmentioning

confidence: 99%

Predicting displacement demand of multi-storey asymmetric buildings by nonlinear static analysis and corrective eccentricities

Bosco

Ferrara

Ghersi

et al. 2015

Engineering Structures

Self Cite

View full text Add to dashboard Cite

“…Many recent studies Bosco et al 2009Bosco et al , 2013a have proved that the seismic response of irregular buildings can be found by performing nonlinear static analyses. In this study the N2 method, according to the approach suggested by Eurocodes (EC 8-3 2005), has been adopted.…”

Section: The Seismic Analysismentioning

confidence: 99%

Concrete Strength Variability as a Source of Irregularity for Existing RC Structures

Stefano

Tanganelli

Viti

2014

Computational Methods, Seismic Protection, Hybrid Testing and Resilience in Earthquake Engineering

View full text Add to dashboard Cite

Mechanical properties of concrete can consistently affect the seismic performance of RC buildings. A proper determination of the concrete strength is therefore essential for a reliable modeling of the structure. The current European Technical Code, Eurocode 8, provides a criterion for the strength assumption related to the knowledge level of the structure, which does not take into account the variability of the strength. If the concrete strength is affected by a large variability, the conventional value suggested by Eurocode 8 can be not conservative, since it does not consider the increase in the demand due to a not homogeneous strength distribution and the reduced capacity of the weaker members. In this paper the concrete strength variability is investigated as a source of in-plan and in-elevation irregularity. The effects of the strength variability on the seismic response and performance are evaluated on a case study, that is a 4-storeys 3D framed building. The seismic response of the case study has been represented by performing a nonlinear static analysis, while the seismic performance has been measured in terms of chord rotation. Results obtained from the analysis have been compared with the Eurocode 8 previsions.

show abstract

An analytical method for the evaluation of the in-plan irregularity of non-regularly asymmetric buildings

Cited by 38 publications

References 24 publications

Prediction of the peak seismic response of asymmetric buildings under bidirectional horizontal ground motion using equivalentSDOFmodel

Prediction of the peak seismic response of asymmetric buildings under bidirectional horizontal ground motion using equivalentSDOFmodel

Predicting displacement demand of multi-storey asymmetric buildings by nonlinear static analysis and corrective eccentricities

Concrete Strength Variability as a Source of Irregularity for Existing RC Structures

Contact Info

Product

Resources

About