Numerical Models for the Evaluation of Natural Vibration Frequencies of Thermo-Modernized Building Walls

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Abstract

As a result of the necessity to improve energy properties of prefabricated buildings, their thermo-modernizations are performed. In the paper various approaches to the modelling of prefabricated load bearing walls before and after thermo-modernization are presented. Simple one layer models with extra mass from ceilings and equivalent stiffness as well as multilayer ones are taken into consideration using the finite element method software. Values of the natural frequencies of the wall horizontal vibrations calculated using the various models, are compared. It was proved that even the very simple model with equivalent stiffness allows to compute natural vibration frequencies of wall with acceptable accuracy for engineering practice.

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  • [1] H. G. Allen. “Analysis and design of structural sandwich panels” Pergamon Press 1969.

  • [2] R. J. Bathurst S. Zarnani A. Gaskinszósty “Shaking table testing of geofoam seismic buffers” Soil Dynamics and Earthquake Engineering Elsevier Vol. 27 No. 4 pp. 324-332 2007.

  • [3] B. Blache J. L. Salagnac “Modernizacja budynków z płyt prefabrykowanych: doświadczenia francuskie” Materiały konferencyjne Mrągowo 3-5 listopada 1999 r. Instytut Techniki Budowlanej pp. 43-74 Warszawa 1999.

  • [4] C. Cardoso S. Jalali “Thermal performance characterization of na modular system for facade” Key Engineering Materials Vol. 634 pp. 62-71 2015.

  • [5] R. Ciesielski K. Kuźniar E. Maciąg T. Tatara “Empirical formulae for fundamental natural periods of buildings with load bearing walls” Archives of Civil Engineering Vol. 38 No. 4 pp. 291-299 1992.

  • [6] J. M. Davies (Editor) “Lightweight sandwich constructions” Blackwell Science Ltd. 2001.

  • [7] Z. Dzierżewicz W. Starosolski “Precast concrete panel building systems in Poland in the years 1970-1985” Wolters Kluwer Polska Warsaw Poland 2010 (in Polish).

  • [8] D. Hartman M. E Greenwood. D. M. Miller “High Strength Glass Fibres” AGY Technical Paper USA 2006.

  • [9] H. D. Hegner “Wielkie osiedla i budynki wielkopłytowe – wizja przyszłości!?” Materiały konferencyjne Mrągowo 3-5 listopada 1999 r. Instytut Techniki Budowlanej pp. 73-106 Warszawa 1999.

  • [10]ITB instruction “External thermal insulation composite systems” Building Research Institute Warsaw Poland 2002 (in Polish).

  • [11]K. Kuźniar E. Maciąg T. Tatara “Prediction of Building Foundation Response Spectra from Mining-Induced Vibrations using Neural Networks” Mining & Environment Vol. 4 No. 4 pp. 50-64 2010.

  • [12]M. Liping W. Ying J. Quan Z. Chunzhi Z. Ping “Evaluation and Selection Research on External Wall Insulation Materials Based on Green Building Energy Conservation” Materials Science Forum Vol. 814 pp 524-532 2015.

  • [13]E. Maciąg K. Kuźniar T. Tatara “Response Spectra of Ground Motions and Building Foundation Vibrations Excited by Rockbursts in the LGC Region” Earthquake Spectra Vol. 32 No. 3 pp. 1769-1791 2016.

  • [14]P. Nowak M. Skłodkowski “Multicriteria Analysis of Selected Building Thermal Insulation Solutions” Archives of Civil Engineering Vol. 62 No. 3 pp. 137-148.

  • [15]A.M. Papadopoulos E. Giama. “Environmental performance evaluation of thermal insulation materials and its impact on the building” Building and Environment Vol. 42 pp. 2178–2187 2007.

  • [16]G. Woltman D. Tomlinson A. Fam “Investigation of Various GFRP Shear Connectors for Insulated Precast Concrete Sandwich Wall Panels” Journal of Composites for Construction” Vol. 17 No. 5 pp. 711-721 2013.

  • [17]Release 11.0 Documentation for Ansys 2007.

  • [18]D. Zenkert “An Introduction to Sandwich Construction” Eastbourne EMAS 1995.

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CiteScore 2018: 0.80

SCImago Journal Rank (SJR) 2018: 0.304
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