Improving Stability and Buckling Resistance of Self-Supporting Isotrussed Telecommunication Tower under Wind Load: An Evaluation According to TIA-222-G Standards

Document Type : Regular Paper

Authors

1 Department of Disaster Mitigation for Structures, College of Civil Engineering, Tongji University, Shanghai 200092, China

2 Department of Construction Management and Real Estate, School of Economics and Management, Tongji University, Shanghai 200092, China

3 Department of Civil Construction and Environmental Engineering Ames, Iowa State University, Iowa 50011, Unites States

4 Department of Mathematics, Faculty of Sciences and Letters, Aksaray University, Aksaray 68100, Turkey

Abstract

Despite the growing demand for durable telecommunication infrastructure, tower stability and durability remain significant challenges. The self-supporting isotrussed telecommunication tower (SSITT) offers a promising solution, but its performance under wind loads requires further improvements. This paper investigates SSITT stability and provides guidelines for wind load calculations based on the Telecommunications Industry Association Standard 222 Revision G (TIA-222-G). The isotruss, a lightweight lattice structure made from advanced composite materials, is analyzed using ABAQUS finite element software. Two 10 m 8-node SSITTs, using carbon/epoxy as the material, were modeled. The results show that the maximum displacements of 45.17 mm (Model 1) and 47.29 mm (Model 2) at the top are within acceptable limits, while the maximum stresses of 135.6 MPa (Model 1) and 198.9 MPa (Model 2) are below the material’s limit of 306 MPa. The study found that the longitudinal member experiences the highest stress levels, which may lead to buckling. To improve performance and durability, it is recommended that the longitudinal member be designed with a larger radius than the helical member.

Graphical Abstract

Improving Stability and Buckling Resistance of Self-Supporting Isotrussed Telecommunication Tower under Wind Load: An Evaluation According to TIA-222-G Standards

Highlights

  • Finite element models of isotrussed towers validated against TIA-222-G standards for wind load resilience.
  • Analyzed isotrussed structural behavior using carbon/epoxy composites with ABAQUS to ensure compliance under service and ultimate load conditions.
  • Identified crucial stress points in longitudinal members, informing design improvements for enhanced stability.
  • Demonstrated the towers' robustness against wind-induced displacements, well within industry limits for serviceability.

Keywords

Main Subjects

References

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History

  • Receive Date: 06 March 2024
  • Revise Date: 23 June 2024
  • Accept Date: 02 November 2024

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