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Steel and Composite Structures Volume 56, Number 6, September 25 2025 (Special Issue) pages 465-474 DOI: https://doi.org/10.12989/scs.2025.56.6.465 |
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 open accessParametric analysis of transmission lines embedded in steel–concrete composite structures: A computational study |
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Dongsoo Lee, Jong-Sub Lee, Younghoon Lee, Thomas H.-K. Kang and Jung-Doung Yu
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| Abstract | ||
| This paper presents a parametric analysis of a two-conductor transmission line embedded in steel–concrete composite structures. The line configuration consists of a steel rebar and PVC-insulated copper wire, with spacing varied from near-contact (14.35 mm) to 3 m. The resistance, inductance, capacitance, conductance, and characteristic impedance of the transmission line are modeled considering skin effect, proximity effect, and frequency. The results show that resistance and conductance are strongly affected by both frequency and conductor spacing, whereas inductance and capacitance are primarily governed by geometry. Characteristic impedance exhibits a combined dependence on spacing and frequency, with significant increases observed at wide spacings and high frequencies. These findings provide valuable insights into the electromagnetic behavior of embedded transmission lines, with implications for structural health monitoring of steel–concrete composite structures. | ||
| Key Words | ||
| characteristic impedance; frequency-dependent RLGC; skin and proximity effects; steel–concrete composite; transmission line | ||
| Address | ||
| Dongsoo Lee:Department of Civil and Environmental Engineering, University of Illinois Urbana-Champaign, 205 North Mathews, Urbana, IL 61801, USA Jong-Sub Lee:School of Civil, Environmental and Architectural Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea Younghoon Lee:School of Civil, Environmental and Architectural Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea Thomas H.-K. Kang:Department of Architecture & Architectural Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea Jung-Doung Yu:Department of Civil Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, Republic of Korea | ||