On-Site Experimental Testing to Study the Vibration of Composite Floors

Abstract:

As a general trend, in order to reduce material consumption or to reduce the mass of the structures, composite floor slabs solutions are used to achieve large spans floor slabs. This solutions led to floors sensitive to vibrations induced generally by human activities. As a verification of the design concepts of the composite floors, usually, it is recommended a further examination of the floor after completion by experimental tests. Although the experimental values of the dynamic response of the floor are uniquely determined, the processing can take two directions of evaluation. The first direction consist in determining the dynamic characteristics of the floor and their comparison with the design values. Another way that can be followed in the processing of the experimental results is to consider the human perception and comfort to the vibration on floors. The paper aims to present a case study on a composite floor, with steel beams and concrete slab, tested on-site. Both aspects of data processing are analyzed, in terms of the structural element, and in terms of the effect on human perception and comfort. Experimentally obtained values for the dynamic characteristics of the floor are compared with numerical values from finite element analysis, while the second type of characteristic values are compared with various human comfort threshold values found in international standards.

• Periodical: Key Engineering Materials (Volume 601)
• Pages: 231-234
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.601.231
• Online since: March 2014
• Authors: Cristian Lucian Ghindea*, Dan Cretu, Monica Popescu, Radu Cruciat, Elena Tulei
• Keywords: Floor Dynamic Characteristics, Floor Vibrations, Frequency Weighted Acceleration, Human Activities, Human Comfort, On-Site Tests

References

[1] Chopra, A. K., Dynamics of Structures, third ed., Prentice Hall, New Jersey, (2006).

[2] ISO 2631-2: 2003, Mechanical vibration and shock - Evaluation of human exposure to whole-body vibration - Part 2: Vibration in buildings (1 Hz to 80 Hz), Geneva, (2003).

DOI: 10.3403/00050085

[3] ISO 2631-2: 1989, Mechanical vibration and shock - Evaluation of human exposure to whole-body vibration - Part 2: Vibration in buildings (1 Hz to 80 Hz), Geneva, (1989).

DOI: 10.3403/00263651

[4] ISO 5348: 1998, Mechanical vibration and shock. Mechanical mounting of accelerometers, Geneva, (1998).

[5] Information on http: /www. seismosoft. com/en/SeismoSignal. aspx.

[6] D. Cretu, E. Tulei, C. Ghindea, R. Cruciat , Vibrations induced by human activities in composite steel floor decks. Case study", International Symposium "Steel Structures: Culture & Sustainability 2010, Istanbul, 2010, pp.511-520.

[7] Information on https: /wiki. csiberkeley. com/display/sap2000/Home.