Abstract:
Pakistan's construction sector is undergoing continuous improvement, reflected
in the recent update of its building code. This research explores the transition
from the previous Building Code of Pakistan (BCP-07) and utilizing peak ground
acceleration (PGA) for seismic design, to the new BCP-21. BCP-21 for a more
comprehensive assessment of seismic demands on structures. This research
builds upon existing seismic vulnerability assessments of RC structures by
focusing on present-day construction practices in Pakistan. The initial phase
involves calibrating of a joint assembly in PERFORM 3D to understand joint
shear degradation. This model is validated against experimental data provided.
Furthermore, a seismically deficient RC frame is modelled and analysed using
time-history analysis. This framework is applied to assess the vulnerability of
typical RC structures of zone 4 and 5 of Islamabad. Buildings are separated
into pre-code and post-code to draw conclusions and propose
recommendations for enhancing the seismic performance of these structures
