EARTHQUAKE RESISTANT DESIGN OF LOW-RISE OPEN GROUND STOREY FRAMED BUILDING

Siva krishna; V.Raj kumar

EARTHQUAKE RESISTANT DESIGN OF LOW-RISE OPEN GROUND STOREY FRAMED BUILDING

Authors: Siva krishna, V.Raj kumar

Unique Paper ID: 144417
Volume: 3
Issue: 11
PageNo: 151-157

Keywords: Open Ground Storey (OGS) Reinforced Concrete (RC)

Abstract:
Presence of infill walls in the frames alters the behaviour of the building under lateral loads. However, it is common industry practice to ignore the stiffness of infill wall for analysis of framed building. Engineers believe that analysis without considering infill stiffness leads to a conservative design. But this may not be always true, especially for vertically irregular buildings with discontinuous infill walls. Hence, the modelling of infill walls in the seismic analysis of framed buildings is imperative. Indian Standard IS 1893: 2002 allows analysis of open ground storey buildings without considering infill stiffness but with a multiplication factor 2.5 in compensation for the stiffness discontinuity. As per the code the columns and beams of the open ground storey are to be designed for 2.5 times the storey shears and moments calculated under seismic loads of bare frames (i.e., without considering the infill stiffness). However, as experienced by the engineers at design offices, the multiplication factor of 2.5 is not realistic for low rise buildings. This calls for an assessment and review of the code recommended multiplication factor for low rise open ground storey buildings. Therefore, the objective of this thesis is defined as to check the applicability of the multiplication factor of 2.5 and to study the effect of infill strength and stiffness in the seismic analysis of low rise open ground storey building.

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Cite This Article

ISSN: 2349-6002
Volume: 3
Issue: 11
PageNo: 151-157

EARTHQUAKE RESISTANT DESIGN OF LOW-RISE OPEN GROUND STOREY FRAMED BUILDING

Available:https://ijirt.org/Article?manuscript=144417

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