Study of the plastic-hinge analysis of 3D steel frames applying nonlinear static analysis

Haitham Kannas,Abdallah M S Wafi

doi:10.47346/ijaesa.v1i3.38

Abstract

This paper provides a distinct study on the performance of different residential buildings with different height and length spans under the influence of applied loads according to the Turkish standard TS498. The research paper presents the nonlinear performance of the buildings and provides a clear picture of the plastic and its stages throughout the construction. The study explains the effect of the various stages of plastic and how it affects the rigidity of the building. The results portray the building's stiffness values and how they change. The results show that stiffness increases with length-increase and decreases by decreasing the height of buildings. All stiffness values were calculated according to the first plastic hinge formation. Software used is ETABS 2018 and all calculations and parameters used according to FEMA356-2000, ASCE 7-16, ACI-318, EURO code 8, and Turkish standard.

Highlights

All global codes are looking to work with performance-based design, a small part of it being Pushover Analysis
Structural systems, and members thereof, should be designed under service loads to have enough stiffness to limit deflections, lateral drift, vibration, or any other deformations that adversely affect the intended use and performance of buildings and other structures based on the requirements outlined in the applicable codes and standards, or as specified in the project design criteria (Hashemi et al, 2018)
This paper provided a clear study on the plastic-hinge analysis for 3D frames with different span lengths and different floor heights

Summary

Introduction

All global codes are looking to work with performance-based design, a small part of it being Pushover Analysis. This study focuses on knowing, what is performance-based design and Pushover Analysis? With updated knowledge regarding the science of ground motion, engineers started taking into perspective the dynamic characteristics. They discovered that different facilities respond in different ways to the same earthquake according to the time-period and the ductility of the building. If a building is designed based on the unknown value of R and an earthquake were to occur, the building could very collapse. The idea of performance-based design formed (Macedo et al, 2019; Leelataviwat et al, 2015)

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Results

Conclusion