MECHANICAL CHARACTERISTICS OF RC SLAB WITH DOUBLE LOOPED JOINT CONNECTION

  • SAKAI Hideaki
    社団法人 土木学会 日本道路公団 中部支社 豊田工事事務所
  • UESUGI Taisuke
    社団法人 土木学会 八千代エンジニヤリング (株) 技術本部
  • UEHIRA Kenji
    社団法人 土木学会 ドーピー建設工業 (株) 技術センター

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Other Title
  • ダブルループ継手構造を有するRC床版の力学的特性に関する研究
  • ダブルループ ツギテ コウゾウ オ ユウスル RC ショウバン ノ リキガクテキ トクセイ ニ カンスル ケンキュウ

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Subdividing the cross-section of a main girder, into suitable sections in a factory-made precast segmental bridges, was a viable solution for the construction of bridges that were difficult to build using conventional techniques, considering the weight limits on the national routes and narrow roads as found in Japan. However, the subsections need to be made monolithic in site. To connect the individual box section to form a twin box girder, a double looped joint connection developed by the authors was adopted. This paper describes the flexural behavior of the transverse RC slab formed by the monolithic joint and its mechanical characteristics based on flexural load tests. Comparison is also made on the flexural behavior and on the safety of such joints with the conventional reinforcement arrangement. As a result, valuable information was obtained for adopting this innovative technique for practical applications.

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