Analytical modelling of infilled frame structures

Crisafulli, Francisco J.; Carr, Athol J.; Park, Robert

doi:10.5459/bnzsee.33.1.30-47

Cited by 152 publications

(114 citation statements)

References 27 publications

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“…For this reason, such structures are usually modeled by means of so-called macro-models, which consist of beam/column elements and diagonal struts representing the masonry infills. A comprehensive overview of variants of diagonal-strut models for infilled frames was performed by Crisafulli et al or, more recently, by Asteris et al [1,2]. The simplest model of an infilled frame consists of a frame model and compressive diagonal struts, which are connected to the frame through the beam-column joints.…”

Section: Introductionmentioning

confidence: 99%

Practice‐oriented probabilistic seismic performance assessment of infilled frames with consideration of shear failure of columns

Celarec

Dolšek

2012

Earthq Engng Struct Dyn

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The objective of the study presented in this paper is to investigate the effects of masonry infills on the shear demand and failure of columns for the case when reinforced concrete frames with such infills are modeled by means of simplified nonlinear models that are not capable of the direct simulation of these effects. It is shown that an approximate simulation of the shear failure of columns can be achieved through an iterative procedure that involves pushover analysis, post‐processing of the analysis results using limit‐state checks of the components, and model adaptation if shear failure of columns is detected. The fragility parameters and the mean annual frequency of limit‐state exceedance are computed on the basis of nonlinear dynamic analysis by using an equivalent SDOF model. The proposed methodology is demonstrated by means of two examples. It was shown that the strength of the four‐story and seven‐story buildings and their deformation capacity are significantly overestimated if column shear failure due to the effects of masonry infills is neglected, whereas the mean annual frequency of limit‐state exceedance for the analyzed limit states is significantly larger than that estimated for the case if the shear failure of columns is neglected. Copyright © 2012 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Practice‐oriented probabilistic seismic performance assessment of infilled frames with consideration of shear failure of columns

Celarec

Dolšek

2012

Earthq Engng Struct Dyn

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“…This was proven, for example, in Smyrou et al (2011), comparing the results of a pseudo-dynamic test on a full-scale, four-storey, three-bay, RC frame with a numerical macro-model. Crisafulli et al (2000) demonstrated the same limitation by comparing the pushover results of single-, two-and three-struts models of an ideal one-bay, one-storey frame to a refined finite element model (Fig. 3).…”

Section: Infilled Frames Modelling Techniques: Literature Reviewmentioning

confidence: 84%

“…Fig. 3 Bending moment comparison for a one-bay one-storey frame using different models for the infill (modified after Crisafulli et al 2000) compression only (see Fig. 2f).…”

Section: Proposed Decoupling Proceduresmentioning

confidence: 99%

“…In the current version of SLaMA, the possible influence of infill walls within infilled frames can be considered only at local level, with checks on the RC members. However, global effects are not captured, including significant modifications on strength, stiffness and displacement ductility (Crisafulli et al 2000;Del Vecchio et al 2018b). In general, this might significantly change the outcome of a seismic assessment based on a nonlinear static capacity curve (particularly for the Serviceability Limit State, SLS).…”

Section: Introductionmentioning

confidence: 99%

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Non-linear analysis of RC masonry-infilled frames using the SLaMA method: part 1—mechanical interpretation of the infill/frame interaction and formulation of the procedure

Gentile

Pampanin

Raffaele

et al. 2019

Bull Earthquake Eng

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The simple lateral mechanism analysis (SLaMA) is an analytical method to assess the force-displacement capacity curve of Reinforced Concrete (RC) structures composed of frames, cantilever walls or dual wall/frame systems. The current version of the method was proposed in the 2017 New Zealand guidelines for the seismic assessment (NZSEE in New Zealand Society for Earthquake Engineering, the seismic assessment of existing buildings-technical guidelines for engineering assessments, Wellington, 2017). Regarding frame structures, the possible influence of infill walls is currently considered locally with checks on the RC members. However, it is universally known that infills have a major effect on the global capacity curve of the frame. In this paper, a comprehensive SLaMA method for infilled frames is proposed, which allows considering the influence of the infills on the global force-displacement curve without any numerical algorithm. The extended SLaMA method is herein formalised and it is validated in a companion paper (part 2) through an extensive parametric analysis. The extended SLaMA is based on the possibility to separately calculate the base shear contributions of the frame and the infills, in turn based on global equilibrium considerations. Such considerations also allow defining a novel procedure to post-process the results of pushover or time-history analyses where infills are modelled as diagonal struts, or to interpret experimental tests. This allows, within a single numerical analysis, to decouple the frame and infills contributions to the base-shear capacity. The decoupling procedure is herein demonstrated for an ideal two-storey, one-bay masonry-infilled frame with different infills configurations.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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“…ISSN: 2321-9653; IC Value: 45.98; SJ Impact Factor: 6.887 Volume 7 Issue IV, Apr 2019-Available at www.ijraset.comCrisafulli et al(2000) …”

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confidence: 99%

Behaviour of Masonry Infilled Walls with RC Frames under In-Plane Loads

Duarah¹

2019

IJRASET

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The analysis of in filled masonry walls with RC frames has been a major area of study in the past. Typically these walls are considered as non-structural components while designing the frame due to the complexity involved. The performance of such structures under an earthquake scenario has attracted major attention. In this paper we look into the analysis of these type of structures using equivalent diagonal strut concept. A comparison is made with the experimental results of a single bay frame performed by Mehrabi(1996) 1 et al and non-linear push over analysis performed in SAP2000 using different equivalent diagonal strut widths suggested by Mainstone(1962) 5 and Holmes(1961) 4 . This paper also compares the results obtained for a diagonal single strut model with a three strut diagonal model suggested by Chrysostomou(1991) 15 for the same widths. In general The SAP2000 analysis showed that all the models considered overestimated the lateral peak load capacity of the masonry in-filled frames.

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Analytical modelling of infilled frame structures

Cited by 152 publications

References 27 publications

Practice‐oriented probabilistic seismic performance assessment of infilled frames with consideration of shear failure of columns

Practice‐oriented probabilistic seismic performance assessment of infilled frames with consideration of shear failure of columns

Non-linear analysis of RC masonry-infilled frames using the SLaMA method: part 1—mechanical interpretation of the infill/frame interaction and formulation of the procedure

Behaviour of Masonry Infilled Walls with RC Frames under In-Plane Loads

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