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Based on the main arch structure design, arch foundation design and high-performance concrete preparation, new design technologies such as asymmetric high and low arches, anchor plug-type arch abutment, and C80 concrete in the tube are proposed for concrete-filled steel tube (CFST) arch bridges in mountainous areas with complex terrain and geological conditions. The innovative structural type, size and material of the arch and abutment foundation solve the problems of conventional arch foundation pits with large excavation volume and deep foundation unloading cracks, etc., saving project construction costs, and are suitable for the construction of CFST arch bridges in mountainous areas.

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Design Technology and Application of Concrete Filled Steel Tube Arch Bridge in Complex Mountain Environment

  • 会议论文

  • 发表日期：

    2025年

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  • Caizhi Sun,
  • Tinmin Mou,
  • Jian Liang,
  • Bikun Fan

摘要

Based on the main arch structure design, arch foundation design and high-performance concrete preparation, new design technologies such as asymmetric high and low arches, anchor plug-type arch abutment, and C80 concrete in the tube are proposed for concrete-filled steel tube (CFST) arch bridges in mountainous areas with complex terrain and geological conditions. The innovative structural type, size and material of the arch and abutment foundation solve the problems of conventional arch foundation pits with large excavation volume and deep foundation unloading cracks, etc., saving project construction costs, and are suitable for the construction of CFST arch bridges in mountainous areas.