DURABILITY EVALUATION WITH WHEEL RUNNING TESTS AND COMPUTATIONAL SIMULATIONS ON PRECAST PC SLAB WITH HALF RIGID JOINT UNDER THE NEGATIVE BENDING MOMENT

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  • KITA Shinichiro
    日鉄エンジニアリング株式会社 ソリューション共創センター
  • SAKURAI Nobuaki
    日鉄エンジニアリング株式会社 ソリューション共創センター
  • MAEKAWA Koichi
    横浜国立大学 都市イノベーション研究院

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Other Title
  • 半剛接合構造を有する床版における負曲げを作用させた輪荷重走行試験と解析による疲労耐久性の検証

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<p> Wheel running tests have been conducted on precast PC slabs jointed with only fillers under the maximum negative bending moment assumed on the intermediate support of actual plate girder bridge. Constant repetitive moving load of 250kN was applied on Slabs jointed with polymer cement mortar and epoxy resin mortar, and these specimens showed interfacial fracture with smaller number of cycles than expected. Meanwhile, tensile fatigue tests have been also conducted on two kinds of fillers, and the different S-N curves were observed between the fillers and concrete.</p><p> Considering the above tests, computational simulations have been conducted. Firstly, the history of the stress on the interference of joints until initial damage was investigated by reproducing wheel running tests. Secondly, the actual durability of slabs jointed with the fillers was evaluated by parametric analysis with negative bending moment and repetitive moving load.</p>

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