Effect of Footfall Induced Vibration on Flat Plate Slabs

 
 
 
  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract


    In recent years, vibration in structures is becoming an increased concern due to the adoption of slender flooring systems (i.e. lighter, thinner and longer floors). Vibrations induced by footfall are more significant in slender floors and should therefore be taken into consideration in the serviceability of the reinforced concrete structures. Limited research exists in the literature focusing on dynamic analysis of flat plate slabs subjected to footfall induced vibration. Hence, this study attempts to breach this research gap by exploring a wider area through conducting a parametric investigation on the effect of floor span, floor aspect ratio, slab thickness and location of openings on the dynamic response of flat plate slabs. Structures are initially designed in accordance with Eurocode 2. Models are generated and analysed using the finite element method and dynamic responses from the footfall analysis are obtained. It was found that vertical displacement increases exponentially with the increase of floor width, aspect ratio and number of openings. However, the displacement decreases with the increase of slab thickness.  Moreover, the location of openings is found to have significant effect on the responses of flat plate slabs.

     

     

  • Keywords


    Dynamic response; finite element modelling; flat plate slabs; footfall; reinforced concrete; vibration.

  • References


      [1] Harper FC, Warlow WJ & Clarke BL, The Forces Applied to The Floor by The Foot in Walking. London: Department of Scientific and Industrial Research, Building Research Station, Research Paper no. 23, 1961, 28 pages.

      [2] Galbraith FW & Barton MV, “Ground Loading from Footsteps”, Journal of the Acoustic Society of America, Vol. 48, No. 5, pp. 1288–1292.

      [3] Blanchard J, Davies BL & Smith JW, “Design Criteria and Analysis for Dynamic Loading of Footbridges” Proceedings of the DOE and DOT TRRL Symposium on Dynamic Behaviour of Bridges. Crowthorne, UK, 19 May 1977, pp. 90-106.

      [4] Ohlsson SV, Floor Vibration and Human Discomfort, PhD Thesis, Chalmers University of Technology, Sweden, 1982.

      [5] Kerr SC, Human Induced Loading on Staircases, PhD Thesis, University College London, UK, 1998.

      [6] Lenzen KH, “Vibration of Steel Joist-Concrete Slab Floors”, American Institute of Steel Construction Engineering Journal, Vol. 3, 1966, pp. 133–136.

      [7] Wheeler JE, “Pedestrian-Induced Vibrations in Footbridges”, Proceedings of the 10th Australian Road Research Board (ARRB) Conference, Sydney, Australia, 27-29 August 1980, pp. 21-35.

      [8] Andriacchi TP, Ogle JA & Galante JO, “Walking Speed as a Basis for Normal and Abnormal Gait Measurements”, Journal of Biomechanics, Vol. 10, 1977, pp. 261-268.

      [9] Zivanovic S, Pavic A & Reynolds P, “Vibration Serviceability of Footbridges under Human-Induced Excitation: Literature Review”, Journal of Sound and Vibration, Vol. 279, 2005, pp, 1-74.

      [10] Hamdan S, Hoque NM & Sutan MN, “Dynamic Property Analysis and Development of Composite Concrete Floor (CCF) and Vibration Serviceability: A Review”, International Journal of the Physical Science, Vol. 6, No. 34, 2011, pp. 7669-7693.

      [11] Petyt M & Mirza WH, “Vibration of Column Supported Floor Slabs”, Journal of Sound and Vibration, Vol. 21, 1972, pp. 355-364.

      [12] Eriksson PE, Vibration of Low-Frequency Floors: Dynamic Forces and Response Prediction, PhD Thesis, Chalmers University of Technology, Sweden, 1972.

      [13] Caetano E & Cunha A, “Experimental Identification of Modal Parameters on a Full Scale Structure”, Congress on Computational Methods and Experimental Measurements - CMEM93, Siena, Italy, 1993.

      [14] Murray TM, Allen DE & Ungar EE, Steel Design Guide Series 11: Floor Vibrations Due to Human Activity, American Institute of Steel Construction (AISC), 2003.

      [15] Willford MR & Young P, A Design Guide for Footfall Induced Vibration of Structures, London: MPA, The Concrete Centre, 2006.

      [16] Bachmann H & Ammann W, Vibration Problems in Structures-Practical Guidelines, Berlin, Springer Science & Business Media, 1995.

      [17] Arup Limited. About Oasys Limited., available online: http://www.oasys-software.com/company/about-oasys.html

      [18] Mello AVA, da Silva JGS, Vellasco PCGDS, de Andrade SAL & de Lima LRO, “Dynamic Analysis of Composite Systems Made of Concrete Slabs and Steel Beams”, Journal of Constructional Steel Research, Vol. 64, 2008, pp. 1142-1151.

      [19] Aw JH, Anwar MP & Elleithy W, “Effect of Footfall Induced Vibration on Footbridges”, Applied Mechanics and Materials, Vol. 802, 2015, pp. 136-141.


 

View

Download

Article ID: 29082
 
DOI: 10.14419/ijet.v7i3.36.29082




Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.