Composites Research

The Korean Society for Composite Materials (한국복합재료학회)
권호 표지
DOI QR코드

DOI QR Code

A Study of the Advanced Composite Material Slab for Light Weight of Tall Building

초고층빌딩 경량화를 위한 복합신소재 슬래브에 관한 연구

  • Han, Bong-Koo (Dept. of Civil Engineering, Seoul National University of Science & Technology)
  • Received : 2013.05.11
  • Accepted : 2014.01.08
  • Published : 2014.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

For each construction material used, there is certain theoretical limit in sizes. For tall building construction, the reduction in slab weight is the first step to take in order to break such size limits. In this paper, the feasibility of such objective is proven and given by numerical analysis result. For a typical building slab, both concrete and advanced composite sandwich panels are considered. The concrete slab is treated as a special orthotropic plate to obtain more accurate result. For each panel, the deflection under the dead and live loads is compared, since both tensile and compressive strengths of the composites are far more higher than those of concrete. All types of sandwich panels considered, except one case, have self-weights less than one tenth of that of the reinforced concrete slab, with deflections less than that of the reinforced concrete slab.

대형구조물 설계 건설시 가장 큰 제약은 모든 건설재료에는 치수의 한계가 있다. 본 논문에서는 고전적인 보이론에 의하여 단순 지지된 비등방성 슬래브의 처짐값을 구한 후 그 값을 비교하였고, 특별 직교이방성 판이론에 의하여 콘크리트와 샌드위치 교량의 물성을 비교하여 그 결과에 따른 처짐비와 강성값을 비교하였다. 경계조건은 임의의 경계조건을 갖는 판에 대한 해석해가 없기 때문에 부득이하게 네변이 모두 단순지지 되었을 경우로 해석을 하였고 복합재료의 인장강도는 콘크리트나 강재보다 훨씬 높으므로 비교대상은 처짐으로 하였다. 즉, 철근콘크리트 슬래브보다 자중이 1/10이면서 처짐이 작은 몇 가지 형태의 샌드위치패널을 고려하였다.

Keywords

References

  1. Meier, U., "Proposal for a CFRP Bridge Across the Straight of Gibraltar at Its Narrowest Site", Proc. 14th Reinforced Plastics Congress, 1984.
  2. Kim, D.H., "Simple Method of Analysis for Preliminary Design of Certain Composite Laminated Primary for Civil Construction II," Journal of Material Technology, Elsevier, London, 1993.
  3. Kim, D.H., "Composite Structures for Civil and Architectural Engineering," E&FN SPON, Chapman & Hall, London, 1995.
  4. Han, B.K., and Kim, D.H., "Simple Method of Vibration Analysis of Three Span Continuous Reinforced Concrete Bridge with Elastic Intermediate Supportm," Journal of Korean Society for Composite Materials, Vol. 17, No. 3, 2004, pp. 23-28.
  5. Han, B.K., and Kim, D.H., "Analysis of Steel Bridges by Means of Specially Orthotropic Plate Theory," Journal of Korean Society of Steel Construction, Vol. 13, No. 1, 2001, pp. 61-69.
  6. Han, B.K., and Kim, D.H., "A Study on Size/Scale Effects in the Failure of Specially Orthotropic Slab Bridges," Journal of Korean Society for Composite Materials, Vol. 23, No. 1, 2010, pp. 23-30. https://doi.org/10.7234/kscm.2010.23.1.023
  7. Kim, D.H., Han, B.K., Lee, J.H., and Hong, C.W., "Simple Methods of Vibration Analysis of Three Span Continuous Reinforced Concrete Bridge with Elastic Intermediate Supports," Proceeding of the Advances in Structural Engineering and Mechanics, Seoul, Vol. 2, 1999, pp. 1279-1284.
  8. Kim, D.H., "A Simple Method of Obtaining 'Exact' Values of the Natural Frequencies of Vibration for Some Composite Laminated Structures for Civil Construction," Proc. of the Second International Symposium on Textile Composites in Building Construction, Lyon, France, 1992. 6. 23-25.
  9. Han, B.K., Kim, D.H., and Lee, Y.H., "Size/Scale Effects in the Failure of Simply Supported Sandwich Bridge," Proc. of Korean Society of Civil Engineers, Vol. 1, 2003, pp. 333-338.
  10. Tsai, S.S.W., "Composite Design", Think Composite, Dayton, OH, 1988.
  11. Goldberg, John E., and Kim, D.H., "The Effect of Neglecting the Radial Moment Term in Analyzing a Sectorial Plate by Means of Finite Differences," Proc. of the Seventh International Symposium on Space Technology and Sciences, Tokyo, Japan, 1967.
  12. Stephen P. Timoshenko, and S. Woinowsky-krieger, "Theory of Plates and Shells, Second Edition", Mcgraw Hill Book Co, 1989.
  13. Ashton, J.E., "Anisotropic Plate Analysis-Boundary Condition," Journal of Composite Materials, April, 1970, pp. 162-171.
  14. Whitney, J.M., and Leissa, A.W., "Analysis of a Simply Supported Laminated Anisotropic Rectangular Plate," Journal of AIAA, Vol. 8, No. 1, 1970, pp. 28-33. https://doi.org/10.2514/3.5601
  15. Pagano, N.J., "Exact Solution for Rectangular Bidirectional Composites and Sandwich Plates," Journal of Composites Materials, Vol. 4, No. 1, Jan, 1970, pp. 20-34. https://doi.org/10.1177/002199837000400102