P-DELTA ANALYSIS OF MULTI STORY RC BUILDING

Rajath R T, M Ramegowda

Abstract: In first order analysis of a structure both kinematic as well as equilibrium relationships are taken with respect to un-deformed shape of the structure. But this does not consider the load which caused due to deflection of the structure. For stability design of a structure second order analysis is required which counteracts equilibrium and kinematic relationship of a structure. In a deformed structure in addition to the applied loads many additional loads due to deformation which develops second order or Pdelta effects in the structure. In the present study seismic analysis and wind load analysis of a multi -storey RC building with and without P-Delta effects is analysed by using ETABS structural analysis software. The seismic zone factor of 0.36 is considered which falls under Zone-V. From the analysis, both the displacement and drifts with respect to earthquake loads are minimum when compared with earthquake load with P-delta effects.

Keywords: P-delta, displacement, drifts and lateral load

DOI: https://doi.org/10.15623/ijret.2016.0512014