Structural analysis of multi-story building affected by seismic loads with Iraqi seismic codes and different universal codes

This study deals with the behavior of buildings located in Baghdad – Iraq, under the influence of seismic using local and international codes to analyze and compare and study this difference in the buildings. After researching and studying the existing structures in the city (high-rise) in densely populated areas (Al-Kadhimiya, and others), which began to expand its buildings upwards, it became necessary to study and analyze these buildings in general. Twenty models (Two different heights and three types of structural systems) were studied. Codes were used for analysis (Uniform Building Code 1997, ASCE 7-2010, Iraqi Seismic Code 1997, Iraqi Seismic Code 2017, and Iraqi Seismic Code 2017 edition 2019), where cooperation was made with a research team that created a modern seismic map based on seismic data extending from the year (1900 - 2020), including the Iraq-Iran border earthquake (7.6 Mw) and the Halabja earthquake (7.3 Mw). Construction system (columns, columns with shear walls, fully shear walls) came from research and study of the city and the types of construction systems used in it, with a height difference, once for 55 m with fifteen floors, and once for a building of 73 m with twenty floors. The results (Base Shear, Displacement, Drift) indicated a large difference between (Uniform Building Code 1997) which ranked the highest, and the last Iraqi code (2019 edition); the lowest position was occupied by the Iraqi code 1997, with a minimal difference between it and the 2017 edition of 2019, while 2017 was high and very close to UBC1997 and the top leaders in the results, The reason for the discrepancy in the results in the Iraqi code is due to the lack of unification and adoption of an official seismic catalog until 2017. The ETABS program (V17.2.0) analyzed and studied the results.