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To improve the durability design level of the foundation bearing platform for offshore fixed wind power, Ultra-high performance concrete (UHPC) is used as a non-demolding membrane shell system, and a high-performance composite concrete bearing platform structure is formed with on-site pouring of core concrete. The interface performance between the prefabricated UHPC membrane shell and the post cast core concrete has become an important aspect of the overall integrity of the high-performance composite concrete bearing platform. The use of interface shear key design to improve interface integrity is necessary for improving the overall stress of the bearing platform structure. The objective of this study is to assess the effect of the internal span on the shear behavior at the junction of UHPC and normal concrete (NC).

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General Effect of Internal Span of U-shaped Stud on UHPC-NC Interfacial Failure Load

  • 会议论文

  • 发表日期：

    2025年

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  • Zhongchong Wu,
  • Dayong Liu,
  • Xiangguo Wu,
  • Yun Zhang,
  • Chengen Wu,
  • Lanri Lin,
  • Jing Zhong,
  • Hongbing Zhu,
  • Ruiquan Zhou,
  • Xianhui You

摘要

To improve the durability design level of the foundation bearing platform for offshore fixed wind power, Ultra-high performance concrete (UHPC) is used as a non-demolding membrane shell system, and a high-performance composite concrete bearing platform structure is formed with on-site pouring of core concrete. The interface performance between the prefabricated UHPC membrane shell and the post cast core concrete has become an important aspect of the overall integrity of the high-performance composite concrete bearing platform. The use of interface shear key design to improve interface integrity is necessary for improving the overall stress of the bearing platform structure. The objective of this study is to assess the effect of the internal span on the shear behavior at the junction of UHPC and normal concrete (NC).