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Steel and Composite Structures
  Volume 24, Number 4, July20 2017 , pages 513-521

Behavior analysis of aerial tunnel maintenance truss platform with high tensile steel UL-700
Dongkyu Lee

    The goal of this study is to investigate structural analysis and behaviors of an innovative aerial work platform truss frame whose ductility is improved by using high strength-steel UL-700. The present space truss frame can move or stop through tunnels for maintenance constructions by automatic facilities and workmanship within standardized limited building lines of tunnel. Most of all, this method overcomes problematic, which is to block cars during construction periods, seriously, of typical methods like as using truck and scaffolds for tunnel maintenance. According to evaluated appropriate design results of space truss frames of numerical examples by using a commercial MIDAS GEN program, it is verified that design parameters such as layered size, cross-sectional size, and steel material of the present space truss frame are determined to depend on characteristics such as lanes or shape of road tunnels.
Key Words
    road tunnel; maintenance; aerial work platform; blocking transportations; MIDAS GEN; UL-700
Department of Architectural Engineering, Sejong University, 98 Gunja-dong, Gwangjin-gu, Seoul, 143-747, Republic of Korea.

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