International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 04 | Apr -2017
p-ISSN: 2395-0072
www.irjet.net
Performance and Analysis of Masonry Infill in R.C. Frame Structure Mr. Yash P. Patel1, Mr. Abbas Jamani2 1M.E.
Structure Student, L.J. Institute of Engineering and Technology, Gujarat, India 2Assistant. Professor, Structure Engineering Dept., L.J. Institute of Engineering and Technology, Gujarat, India ---------------------------------------------------------------------***--------------------------------------------------------------------1.1 Parametric Study between the vertical and horizontal resisting elements of building frames, presuming that these infill will not take The increase in rigidity and stiffness lead to part in resisting any kind of load either axial or lateral. vulnerability in out plane loadings like lateral loads In contrary, an infill wall considerably enhances the and seismic loads. Thus it becomes important to rigidity and strength of the frame structure. It has been consider the loads other than only wind and gravity observed through various assessments, that the frame loads, the seismic events act in 3 Dimensions to all considering no infill has comparatively lesser stiffness members of structure leaving the infill the weakest and strength than the infill frame and therefore their component. Thus equivalent diagonal strut approach is adapted to estimate the stiffness provided to the ignorance cause failure in many multi-storey buildings whole structure. The change in results will be seen when subjected to seismic loads that acts out of plane. with change in the material used in filling the voids Masonry materials are considered brittle in nature thus between beams and columns. Traditional clay bricks usually referred to be as non-structural element, they , aerated blocks and solid cement bricks are to be contribute to increase in stiffness and rigidity and checked for. Further the plan is to check for attract vulnerability to lateral and seismic loadings. Also efficiency in stresses and cost. The base shear , there is loss of ductility. To observe the effect of masonry storey drifts , storey displacements and lateral infill panel, it is modeled as an equivalent diagonal strut loadings are to be compared for each model of G+7 for G+7 and G+12 buildings using ETABS. In present and g+12 and compiled at the end of work. study the responses of infill materials mentioned are to be compared with the storey shear, storey drift, 2. METHODOLOGY displacements and lateral force for bare frame RC frame; 2.1 Model to conclude the work. Cost implications are discussed.
Abstract - Masonry infill are used to fill the spans
Key Words: Bricks, AAC blocks, Solid cement blocks, Equivalent Diagonal Struts ETABS.
1. INTRODUCTION Less- ductile RC frames with Infill is not a rare sight nowadays. Masonry infills are widely used to fill in the voids in Reinforced Concrete Frames. It is presumed that masonry infill is non-structural member of a structure due to brittleness in nature. Hence its consideration while analysis of frame is neglected. In fact, the masonry infill between horizontal and vertical members of frame helps to provide rigidity to the structure. The infills are merely considered as architectural component or just a partition but in fact there is utter need to advance in the analysis and performance check for the infill used.
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Polyakov (1960)[6] experimented tests on masonry infilled frames, first proposing that the infill system works as a braced frame, with the wall forming compression struts. Thus enables truss-action. Stafford-Smith (1962)[2] and Mainstone (1971)[3], among others, proposed methods for calculating the effective width of the diagonal strut, supported by test results from mortar panels and infilled frames, respectively. Stafford-Smith and Carter (1969) [7]worked out on analytical techniques to estimate the effective width of the strut, and cracking and crushing loads, as a function of the contact length between frame and wall elements. Other scientists have developed a finite element method to guide the widths of equivalent diagonal struts for infills.
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