Finite element simulation of the elastic behaviour of infilled frames with openings

Achyutha, H.; Jagadish, Renuka; Rao, P. Srinivasa; Rahman, Saidur

doi:10.1016/0045-7949(86)90077-5

Cited by 22 publications

(8 citation statements)

References 4 publications

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“…Achyuta et al [36] used finite element model to simulate the elastic behaviour of infilled frames with openings. Different material properties, complex nature of stress system existingat the interface of infill and frame,separation, slip and loss of friction at the interface were accommodated in finite element model.…”

Section: Fig (41)mentioning

confidence: 99%

Masonry Infill RC Frames with Openings: Review of In-plane Lateral Load Behaviour and Modeling Approaches

Surendran

Kaushik²

2012

TOBCTJ

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Un-reinforced masonry walls are commonly used as infills in reinforced concrete (RC) buildings. These buildings have high in-plane stiffness and strength, and therefore, the lateral load behaviour of such RC frames is different than that of the frames without infill walls. Openings in walls significantly reduce the lateral strength and stiffness of RC frames, and alter their failure modes. Past researchers have tried to find out experimentally and analytically the influence of several parameters, like opening size and location, aspect ratio of openings, connection between frame and infill wall, ductile detailing in frame members, material properties, failure modes, etc. on behavior of masonry infill RC frames. Accordingly, several analytical models have been proposed in the literature and seismic codes of some countries to model the stiffness and strength properties of infill walls. Most of the past studies and seismic codes recommend modeling the infills as equivalent diagonal struts, and cross-sectional area of the struts are reduced appropriately to account for openings in the walls. Analytical methods have also been proposed to estimate the possible mode of failure and lateral load carrying capacity of infill frames with and without openings. The current article is intended to review and compare past relevant studies and seismic codes of different countries on in-plane lateral load behaviour and modeling approaches for masonry infill RC frames with openings. The comparative study may help designers and code developers in selecting and recommending suitable analytical models for estimating strength, stiffness, failure modes, and other properties of infill RC frames with openings.

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Section: Fig (41)mentioning

confidence: 99%

Masonry Infill RC Frames with Openings: Review of In-plane Lateral Load Behaviour and Modeling Approaches

Surendran

Kaushik²

2012

TOBCTJ

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“…2 and Figure 1. Achyutha et al (1986) developed a two dimensional elastic finite element model to investigate the effect of size of opening and types of stiffeners on the lateral stiffness of infilled frames with openings. Mehrabi and Shing (1997) have proposed a smeared-crack nonlinear finite element model to study the nonlinear behavior of infilled reinforced concrete frames.…”

Section: Numerical Modeling Strategies For Masonry-infilled Framesmentioning

confidence: 99%

Computational Modeling of Masonry Structures Using the Discrete Element Method

Sarhosis

2016

Advances in Civil and Industrial Engineering

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In this chapter, the different modeling strategies for simulating the behavior of masonry infilled frames are investigated. Particular emphasis is given on the suitability of the Discrete Element Method (DEM) to accurately represent the mechanical behavior, strength and ductility of concrete and brickwork masonry infilled frames. Within DEM, masonry infill panels are represented by individual bricks and blocks separated by zero thickness interfaces representing mortar joints. The assumptions adopted, the numerical implementation and the advantages and disadvantages of modeling masonry infilled frames using the discrete element method are discussed. This 'discontinuum' approach, an alternative to modeling masonry as a homogenized continuum, is particularly suited for studying the mechanical behavior and interaction between the individual masonry brick/blocks and their interaction with the framed structure.

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“…In order to ensure the safety of existing buildings, further knowledge on their structural behavior will be necessary. Researchers such as Bertero and Brokken 11 and Achyutha et al 12 have conducted experimental investigations on the lateral stiffness and strengths of concrete frames infilled with masonry panels. According to Chiou et al, 13 filled masonry wall affected dominantly the lateral load behavior of the framed masonry structure and the partially filled masonry wall leads to a severe failure of the column.…”

Section: Research Significancementioning

confidence: 99%

Seismic Behavior of a Partially Infilled RC Frame Retrofitted Using GFRP Laminates

Jayaguru

Subramanian²

2011

Experimental Techniques

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Masonry‐infilled panels are normally used as partitions or as architectural elements in reinforced concrete (RC) structures. The need for incorporating openings to the walls of a building in order to provide natural lighting and ventilation leads to partial lateral confinement along the height of the column by rigid elements, such as internal partitions and facades. This situation introduces large shear stresses, when the structure is subjected to seismic forces and the columns can be seriously damaged due to captive‐column effect. This paper presents the results of analytical and experimental investigations of one‐third scaled two‐bay two‐story RC frames with partial infill in the bottom story and subjected to lateral cyclic loads. A local retrofitting strategy of strengthening RC structural elements with glass fiber reinforced polymer (GFRP) composites was adopted. Test results indicated that the retrofitted frame exhibited significantly higher ultimate strength and stiffness than the control frame (frame without retrofit). Force–deformation relationships, damage patterns, and other characteristics of the frames were also demonstrated. The aim of the GFRP retrofit was to enhance the global performance of the partially infilled structure under seismic action, by preventing the development of captive‐column conditions.

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Finite element simulation of the elastic behaviour of infilled frames with openings

Cited by 22 publications

References 4 publications

Masonry Infill RC Frames with Openings: Review of In-plane Lateral Load Behaviour and Modeling Approaches

Masonry Infill RC Frames with Openings: Review of In-plane Lateral Load Behaviour and Modeling Approaches

Computational Modeling of Masonry Structures Using the Discrete Element Method

Seismic Behavior of a Partially Infilled RC Frame Retrofitted Using GFRP Laminates

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