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<p>The Banbuhe (Banbu River) Bridge of the Wengma Railway is a deck-type reinforced concrete arch bridge with a span of 188&#xa0;m. The main arch ring is a single-box double-chamber equal-width and equal-height box section with a width of 7&#xa0;m and a height of 4.5&#xa0;m. The main arch ring is divided into 37 sections, of which the starting section is poured on the floor-type steel pipe support, the mid-span closure section is poured by hanger, and the remaining part is poured by a cable-stayed buckle hanging + hanging basket cantilever. In this paper, a cable-stayed buckle hanging system was first designed; then, Midas/Civil was used to analyse the construction stage, and the tensile strength of the main arch ring was used as the control index to optimize the construction stage. The buckle and back-cable forces of the cable-stayed buckle system, as well as the forces of the buckle tower and the main arch ring, met all the requirements. Second, through parameter sensitivity analysis, the influence of the self-weight of the concrete and the self-weight of the hanging basket on the stress of the main arch ring after closure was studied. Finally, after onsite implementation, the main arch ring of the Banbuhe Bridge on the Wengma Railway was closed, and the overall alignment error of the main arch ring was only 3&#xa0;mm.</p>

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Cable-stayed suspension design and parameter sensitivity analysis for cantilever casting of the main arch ring of a reinforced concrete arch bridge

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月4日

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  • ShuKuan Gan,
  • YouQing Li,
  • ShenZhong Zhao,
  • JinTang Su,
  • ZhanGuo Liu

摘要

The Banbuhe (Banbu River) Bridge of the Wengma Railway is a deck-type reinforced concrete arch bridge with a span of 188 m. The main arch ring is a single-box double-chamber equal-width and equal-height box section with a width of 7 m and a height of 4.5 m. The main arch ring is divided into 37 sections, of which the starting section is poured on the floor-type steel pipe support, the mid-span closure section is poured by hanger, and the remaining part is poured by a cable-stayed buckle hanging + hanging basket cantilever. In this paper, a cable-stayed buckle hanging system was first designed; then, Midas/Civil was used to analyse the construction stage, and the tensile strength of the main arch ring was used as the control index to optimize the construction stage. The buckle and back-cable forces of the cable-stayed buckle system, as well as the forces of the buckle tower and the main arch ring, met all the requirements. Second, through parameter sensitivity analysis, the influence of the self-weight of the concrete and the self-weight of the hanging basket on the stress of the main arch ring after closure was studied. Finally, after onsite implementation, the main arch ring of the Banbuhe Bridge on the Wengma Railway was closed, and the overall alignment error of the main arch ring was only 3 mm.