DOI QR코드

DOI QR Code

Lightweight Floor Systems for Tall Buildings: A Comparative Analysis of Structural Material Efficiencies

  • Piyush Khairnar (Huckabee College of Architecture, Texas Tech University)
  • 발행 : 2023.06.01

초록

Typical floor systems in contemporary tall buildings consist of reinforced concrete or composite metal deck over framing members and account for a majority of the structural weight of the building. The use of high-density materials, such as reinforced concrete and steel, increases the weight of floor systems, reducing the system's overall efficiency. With the introduction of high-performance materials, mainly mass timber products, and fiber-reinforced composites, in the construction industry, designers and engineers have multiple options to choose from when selecting structural materials. This paper discusses the application of mass timber and carbon fiber composites as structural materials in floor systems of tall buildings. The research focused on a comparative analysis of the structural system efficiency for five different design options for tall building floor systems. Finite Element Analysis (FEA) method was adopted to develop a simulation framework, and parametric structural models were simulated to evaluate the structural performance under specific loading conditions. Simulation results revealed the advantages of lightweight structural materials to improve system efficiency and reduce material consumption. The impact of mechanical properties of materials, loading conditions, and issues related to fire engineering and construction were briefly discussed, and future research topics were identified in conclusion.

키워드

참고문헌

  1. Abed, J., Rayburg, S., Rodwell, J., & Neave, M. (2022). A Review of the Performance and Benefits of Mass Timber as an Alternative to Concrete and Steel for Improving the Sustainability of Structures, Sustainability, Vol. 14, Issue 9, p. 5570.
  2. Ali, M. M. and Moon, K. S., (2007). Structural Developments in Tall Buildings: Current Trends and Future Prospects, Architectural Science Review, 50:3, 205-223. https://doi.org/10.3763/asre.2007.5027
  3. American Institute of Steel Construction., (2016). Specification for Structural Steel Buildings, ANSI/AISC 360-16.
  4. American Society of Civil Engineers., (2017). ASCE standard ASCE/SEI 7-16: Minimum Design Loads and Associated Criteria for Buildings and Other Structures.
  5. American Society of Civil Engineers., (2021) Pre-standard for Load and Resistance Factor Design (LRFD) for Pultruded Fiber Reinforced Polymer (FRP) Structures, ASCE/SEI 74-XX.
  6. American Wood Council., (2018). National Design Specification for Wood Construction.
  7. Campbell F.C., (2010). Structural Composite Materials, ASM International.
  8. Choi Y. S., (2002). The Preliminary Design Guideline for Tall Building: Exploration of Planning Factors & Building Factors, ARCHITECTURAL RESEARCH, Vol. 4, No. 1, pp. 1-6.
  9. Council On Tall Buildings and Urban Habitat., (1995). Architecture of tall buildings. McGraw-Hill, New York, USA.
  10. Di Modica, P., & Kotsikos, G. & Gibson, A.G., (2014). Fire behaviour of carbon fibre composites under load. 16th European Conference on Composite Materials, ECCM 2014.
  11. Elnimeiri M., Gupta P., 2009. Sustainable Structure of Tall and Special Buildings, CTBUH 2nd Annual Special Edition, Tall Sustainability, Wiley Volume 17.
  12. Harte, A. M. (2017). Mass timber - the emergence of a modern construction material. In Journal of Structural Integrity and Maintenance, Vol. 2, Issue 3, pp. 121-132. Informa UK Limited. https://doi.org/10.1080/24705314.2017.1354156
  13. Huang X., 2009. Fabrication and Properties of Carbon Fibers, Materials 2009 2 2369-2403. https://doi.org/10.3390/ma2042369
  14. Khairnar P. R., (2022). Efficiency of Carbon Fiber Composite Structural Systems for Tall Buildings: A Parametric Simulation Based Framework for Finite Element Analysis, ProQuest Dissertation Publishing. 2022.
  15. Kim, H.I., & Elnimeiri, M. (2004). Space Efficiency in Multi-Use Tall Building Space Efficiency in Multi-Use Tall Building. CTBUH, Chicago, USA.
  16. Liu F., Deng S., Zhang J., (2017). Mechanical Properties of Epoxy and Its Carbon Fiber Composites Modified by Nanoparticles, Hindawi Journal of Nanomaterials Volume 2017.
  17. Owolabi, D., & Loss, C. (2022). Advancements in Timber Construction: A Review of Prefabricated Mass Timber Floor Assemblies. In IABSE Congress, Nanjing 2022: Bridges and Structures: Connection, Integration and Harmonisation.
  18. Preisinger, C., & Heimrath, M. (2014). Karamba-A Toolkit for Parametric Structural Design. Structural Engineering International, 24(2), 217-221.
  19. Smith B. S. & Coull, A., (1991). Structural analysis and design of high rise buildings. Wiley, New York, USA.
  20. Werkle H., (2022). Finite Elements in Structural Analysis : theoretical concepts and modeling procedures in statics and dynamics of structures. Springer Nature, Berlin, Germany.