Base Shear Final
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Estim ation of Enhanced D esign B ase Shear R equirem ent for B uildings D esigned A s P er IS C odes P rior to IS:1893-2002 B y Seism ic C oefficientM ethod And Estim ation ofEnhanced D esign B ase Shearfor Strengthening the Existing R C B uildings D esigned A s P erIS C odes P riorto IS:1893- 2002 by Seism ic C oefficientM ethod RAM A RAJU.K CINITHA.A KAM ATC HI.P N A G E S H.R.IYE R LA K S H M A N A N.N V IB R A T IO N C O NT R O L G R O UP, S R UC T R A L E NG INE E R ING R E S E A R C H C E NT R E , C HE NNA I-600 113
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Transcript of Base Shear Final
Estimation of Enhanced Design Base Shear Requirement for Buildings Designed As Per IS Codes Prior to IS:1893-2002 By Seismic Coefficient Method And Estimation of Enhanced Design Base Shear for Strengthening the Existing RC Buildings Designed As Per IS Codes Prior to IS:18932002 by Seismic Coefficient MethodRAMA RAJU.K CINITHA.A KAMATCHI.P NAGESH.R.IYER LAKSHMANAN.NVIBRAT ION CONTROL GROUP, S RUCTRAL ENGINEERING RESEARCH CENTRE,CHENNAI-600 113
Introduction
Paper 1
The existing low/medium-rise buildings designed as per the old codes of practice are required to be retrofitted to comply with the base shear requirement of present IS: 1893-2002 Seismic Coefficient Method (less than 8-Storeys and below 40m ht)
Seismic Base Shear
Type of Building frame Seismic zone upgradation Site soil condition Importance Factor Response reduction factor
Estimation of Enhanced Base Shear
for 3 Building models
Introduction
cont----
Paper 2
Seismic Base ShearType of Building frame Seismic zone buildings located Site soil condition Importance Factor Response reduction factor
Effect of soil foundation systemEstimation of Enhanced Base Shear for 2 Building models
Evaluation Of Enhanced Design Base Shear of Reinforced Concrete Buildings
Outline Enhanced Design Base Shear requirement of Existing Buildings(with infill and without infill) as per IS:1893-2002 by Seismic Coefficient Method for two revisions of Seismic Codes studied are IS:1893-1966, 1984
Estimation of Enhanced Base Shear (Seismic coefficientMethod) for Three Building models
Results and Discussion
Seismic Coefficient Method is used for regular buildings lessthan 8-Storeys and below 40m height.
In this method, Seismic Base Shear depends on Type of Building frame, Fundamental period of the building, Seismic zone buildings located, Site soil condition, Importance Factor, Response reduction factor
Mapping Seismic Zones to Intensities in IS:1893Evolution of Seismic Zones in IS:1893-2002In IS 1893-1970,IS1893-1975 In IS 1893-1962 and IS1893-1966 Estimation of Base shear based on IS:1893 In IS 1893-2002 Table I.1 and IS1893-1984 IS Codes IS 1893-1966 IS 1893-1984 IS 1893-2002 Equations for Modified MMI Base Seismic Seismic Modified CISSeismic Zone MMI Scale Scale with Shear Zone Zone 64 CIS-64 Constants C coefficient defining the Where For structure T
