Local effects on RC frames induced by AAC masonry infills through FEM simulation of in-plane tests

Milanesi, Riccardo R.; Morandi, Paolo; Magenes, Guido

doi:10.1007/s10518-018-0353-5

Cited by 56 publications

(37 citation statements)

References 20 publications

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“…Several other studies and efforts were carried out by other authors [68,[138][139][140][141][142][143][144][145][146][147][148]. Asteris et al [131] present an extensive and in-depth state-of-the-art review concerning the infill masonry micromodelling approaches.…”

Section: Detailed Micromodelling Approachesmentioning

confidence: 99%

Recent Findings and Open Issues concerning the Seismic Behaviour of Masonry Infill Walls in RC Buildings

Furtado

Risi

2020

Advances in Civil Engineering

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e extension of the damages observed after the last major earthquakes shows that the seismic risk mitigation of infilled reinforced concrete structures is a paramount topic in seismic prone regions. In the assessment of existing structures and the design of new ones, the infill walls are considered as nonstructural elements by most of the seismic codes and, generally, comprehensive provisions for practitioners are missing. However, nowadays, it is well recognized by the community the importance of the infills in the seismic behaviour of the reinforced concrete structures. Accurate modelling strategies and appropriate seismic assessment methodologies are crucial to understand the behaviour of existing buildings and to develop efficient and appropriate mitigation measures to prevent high level of damages, casualties, and economic losses. e development of effective strengthening solutions to improve the infill seismic behaviour and proper analytical formulations that could help design engineers are still open issues, among others, on this topic. e main aim of this paper is to provide a state-of-the-art review concerning the typologies of damages observed in the last earthquakes where the causes and possible solutions are discussed. After that, a review of in-plane and out-of-plane testing campaigns from the literature on infilled reinforced concrete frames are presented as well as their relevant findings. e most common strengthening solutions to improve the seismic behaviour are presented, and some examples are discussed. Finally, a brief summary of the modelling strategies available in the literature is presented.

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Section: Detailed Micromodelling Approachesmentioning

confidence: 99%

Recent Findings and Open Issues concerning the Seismic Behaviour of Masonry Infill Walls in RC Buildings

Furtado

Risi

2020

Advances in Civil Engineering

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“…Furthermore, Lourenço ( [11]) proposed to classify the micro-model depending on the level of refinement. The first possibility is to represent the masonry as a homogenous material and, sometimes, these models are defined as "meso-models" ( [8]). It is also possible to model the masonry as composed by masonry unit continuous elements and interface elements as mortar joints ( [12]).…”

Section: Literature Reviewmentioning

confidence: 99%

“…The technique assumes full bond between the reinforcement and the concrete, which is a common assumption in case of ribbed bars. Embedding options are typically available in major finite element codes for modelling rebars (see, e.g., Milanesi et al, [8]).…”

Section: Description Of the Modelmentioning

confidence: 99%

Fem Simulation of the in-Plane Seismic Experimental Response of R.C. Frames With Unreinforced and Bed-Joint Reinforced Aac Masonry Infills

Milanesi¹,

Andreotti²,

Morandi³

et al. 2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Unreinforced masonry infills in RC structures are used worldwide and commonly built in complete adherence with the RC frame without any reinforcement and/or fastening. According to post-seismic surveys and experimental studies, due to the intrinsic vulnerability of these non-structural elements, they can cause considerable economic and downtime losses, and even threat human lives. Although several researchers have studied the seismic behaviour of masonry infills, the response of AAC masonry and the solution with the bed-joint reinforcement need further studies starting from the available experimental results. The present paper introduces preliminary results of a numerical research where in-plane experimental tests carried out on unreinforced and bed-joint reinforced AAC masonry infills have been simulated through nonlinear FEM analysis. The numerical simulation has been anticipated by a calibration of the materials according to tests of characterization. Moreover, the influence of the bed-joint reinforcement on the in-plane seismic behaviour has been numerically studied, and the results have been compared to the unreinforced solution.

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“…Recently, Milanesi et al [10] have investigated the local interaction between the traditional AAC masonry infill and the RC frame through a numerical FEM simulation of the in-plane test presented in Section 3.1.…”

Section: Numerical Simulation Of the In-plane Response Of Traditionalmentioning

confidence: 99%

“…Hak et al [9], Milanesi et al [10]). Although various innovative systems are recently being proposed by different researchers (Preti et al [11], Totoev and Lin [12], Morandi et al [13], Markulak et al [14]), a widely scientifically and practical recognized solution which can be adopted for every masonry has not been achieved yet.…”

Section: Introductionmentioning

confidence: 98%

Seismic performance of AAC masonry infill: From traditional systems to innovative solutions

et al. 2018

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According to many post-seismic event surveys and research investigations, the seismic response of masonry infills can cause considerable economic and downtime losses and can represent a serious threat to human lives. Although many researchers have developed innovative infill systems and new design criteria, a widely scientifically and practical recognized solution which can be adopted for every masonry type has not been achieved yet. Moreover, the increased use of autoclaved aerated concrete (AAC) masonry infills thanks to its lightness, excellent thermal and acoustic insulation, and the fire resistance highlights the need of enhancing the knowledge about the seismic behavior of such infill material, and the possibility to develop improved systems that optimize the response of the AAC masonry in order to reduce detrimental issues of traditional infills. Within this paper, the experimental cyclic (in-plane and out-of-plane) response of some traditional and enhanced infill solutions are presented together with a numerical simulation of the in-plane tests on AAC unreinforced masonry infills. Furthermore, the main aspects affecting the seismic response, such as the in-plane performance, the out-of-plane resistance, the local effects on adjacent reinforced concrete (RC) members, are discussed in order to indicate a possible path for future seismic resistant innovative solutions for AAC masonry infills. K E Y W O R D SAAC masonry infill, in-plane and out-of-plane response, infill seismic behavior, improved infill solutions, seismic issues of infills

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Local effects on RC frames induced by AAC masonry infills through FEM simulation of in-plane tests

Cited by 56 publications

References 20 publications

Recent Findings and Open Issues concerning the Seismic Behaviour of Masonry Infill Walls in RC Buildings

Recent Findings and Open Issues concerning the Seismic Behaviour of Masonry Infill Walls in RC Buildings

Fem Simulation of the in-Plane Seismic Experimental Response of R.C. Frames With Unreinforced and Bed-Joint Reinforced Aac Masonry Infills

Seismic performance of AAC masonry infill: From traditional systems to innovative solutions

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