Dynamic Behavior of the Composite Steel–Concrete Beam Floor Systems under Free and Forced Vibration

Faham Tahmasebinia,Samad M E Sepasgozar,Yufan Sun,Chio Fai Lok,Fernando Alonso Marroquin,Junyi Wu,Cho Sum Yip

doi:10.3390/buildings12030320

Abstract

This paper aims to investigate the dynamic behavior of composite steel–concrete floor systems under both free and forced vibrations. A combination of numerical and analytical methods was comprehensively employed to calibrate the suggested solutions to extend the application of accurate numerical methods in future design purposes. Different commercial Finite Element Packages including ABAQUS/CAE and Strand7 were precisely utilized. The obtained results from the Finite Element Simulations were broadly compared with the available international design guidelines including British Standard BS 6472 and international standard ISO 10137. The first 10 active vibration modes in different composite steel–concrete beam floor systems were numerically investigated. Different concrete slabs by respecting the designated various types of secondary and primary steel beam components were comprehensively examined. It was found that the lengths of primary and secondary beams can considerably influence the computed fundamental frequencies and the response factors of the simulated composite floor system. Based on carrying out an extensive parametrical study, further practical recommendations were suggested to provide a reliable benchmark for structural designers.

Highlights

Academic Editor: Alessandra AprileComposite steel–concrete floor systems have been widely adopted as flooring options in both commercial and residential projects, as it is possible to achieve longer span floors with shallower depth of sections; this may result in optimization in the construction stage [1–8]
An accurate Finite Element technique to simulate the dynamic behavior of the composite steel–concrete beam systems under free and impulsive loading condition were developed
In order to validate the developed Finite Element Methods, a practical available analytical solution based on the suggested methods by Steel ConstructionInstitute (SCI) [7,10,12,25] was systematically compared

Summary

Introduction

Academic Editor: Alessandra AprileComposite steel–concrete floor systems have been widely adopted as flooring options in both commercial and residential projects, as it is possible to achieve longer span floors with shallower depth of sections; this may result in optimization in the construction stage [1–8]. With the development in lighter and longer span composite floor design, in recent years, the dynamic behavior of composite steel–concrete floor systems has become a critical issue for the designers, since the lighter floor systems may be significantly influenced by the human’s vibration [11–17]. The indicated issues would be more critical when it comes to considering the ultra-low vibration environments conditions that are required to explicitly design hospitals and nanotechnology facilities. Both free and forced vibration are substantial factors, which are needed to be taken into account in designing different types of the composite beam floor systems. Following Lenzen’s [22] work, several other approaches were developed, and the main design methodologies for steel–concrete composite floor systems are the Steel Construction.

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