INFLUENCE OF SEISMIC ZONE FACTOR AND THE INTERNATIONAL CODAL PROVISIONS FOR VARIOUS LATERAL LOAD RESISTING SYSTEMS IN MULTI STOREY BUILDINGS

M Velayutham (1) , K. Subramanian (2)

1 Anna University
2 Department of Civil Engineering, Coimbatore Institute of Technology, India

Earthquake on 26th January 2001 in Gujarat clearly demonstrated the earthquake vulnerability of India. Almost more than 60% of our land is vulnerable to earthquake of magnitude more than 7. This leads to the professionals to carry out the research on seismic forces that influence on the structures. This paper presents a study on influence of zone factors and the various international codal provisions for various lateral load resisting systems. Special moment resisting frames, shear wall systems and dual systems are taken in the present study. Ductile systems are taken in the study, where inelastic analysis procedures effectively account for several sources of force reduction. In the present study, the main factors which contribute for the seismic load have been studied and dynamic analysis results for various structural systems with various zone factors are compared using various international standards. To illustrate the various seismic parameters governing the seismic forces on the building, analytical study is carried out using ETABS for the various structural systems and the similarities and differences are presented for various international standards. The dynamic analysis results such as modal participating mass ratios, response spectrum base reaction, storey shears, storey displacements and storey drifts are discussed in detail. The influence of zone factor and the codal provisions are discussed when the same building is to be located in different regions and remedial measures if any for their strengthening.

Mots clés: zone factors; seismic analysis; time period and mode shapes; international standards; structural systems

Domaines: Informatique [cs]

M Velayutham, K. Subramanian. INFLUENCE OF SEISMIC ZONE FACTOR AND THE INTERNATIONAL CODAL PROVISIONS FOR VARIOUS LATERAL LOAD RESISTING SYSTEMS IN MULTI STOREY BUILDINGS. ISET GOLDEN JUBILEE SYMPOSIUM, ndian Society of Earthquake Technology, Oct 2012, Roorkee, India. ⟨hal-02502160⟩