Evaluation of Egyptian code provisions for seismic design of moment-resisting-frame multi-story buildings

Abstract

SRCFT columns are formed by inserting a steel section into a concrete-filled steel tube. These types of columns are named steel-reinforced concrete-filled steel tubular (SRCFT) columns. The current study aims at investigating the various types of reinforcing steel section to improve the strength and hysteresis behavior of SRCFT columns under axial and lateral cyclic loading. To attain this objective, a numerical study has been conducted on a series of composite columns. First, FEM procedure has been verified by the use of available experimental studies. Next, eight composite columns having different types of cross sections were analyzed. For comparison purpose, the base model was a CFT column used as a benchmark specimen. Nevertheless, the other specimens were SRCFT types. The results indicate that reinforcement of a CFT column through this method leads to enhancement in load-carrying capacity, enhancement in lateral drift ratio, ductility, preventing of local buckling in steel shell, and enhancement in energy absorption capacity. Under cyclic displacement history, it was observed that the use of cross-shaped reinforcing steel section causes a higher level of energy dissipation and the moment of inertia of the reinforcing steel sections was found to be the most significant parameter affecting the hysteresis behavior of SRCFT columns.

A Comparative Study of Seismic Performance Evaluation of Reinforced Concrete Frame Structures Using Chinese and African Seismic Codes

“…Additionally, the soil parameter significantly impacts the shape of the response spectrum curve, further influencing the results. This highlights the importance of considering soil parameters in seismic analysis [10].…”

“…Egypt published its first seismic code (ECP-1989) in 1989 [10]. It was revised in 1993 (ECP-1993) and 2003 (ECP-2003) to address the shortcomings of the previous versions [11].…”

“…It was revised in 1993 (ECP-1993) and 2003 (ECP-2003) to address the shortcomings of the previous versions [11]. The ECP-2003 seismic code considers the building's response spectra and soil modulus seismic regions [10,12]. Algeria established its first seismic regulation (RPA-81) in 1980.…”

Ambient Vibrations of Unreinforced Masonry Buildings in Dhaka City

“…The Egyptian code provisions for building seismic design adopt the traditional approach of equivalent static load method as the main method for evaluating seismic actions and recommend the response spectrum method for non-symmetrical buildings. Raheem (2013) evaluated the Egyptian code provisions for the seismic design of moment-resistant frame multi-storey building through using non-linear time history analysis. The analysis procedures are evaluated for their ability to predict deformation demands in terms of inter-storey drifts, potential failure mechanisms and storey shear force demands.…”