高強度せん断補強筋を用いたプレキャストプレストレストコンクリート梁の曲げせん断性状に関する研究 FLEXURAL AND SHEAR BEHAVIOR OF PRECAST PRESTRESSED CONCRETE BEAM WITH HIGH STRENGTH SHEAR REINFORCEMENT

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Author(s)

    • 李 在満 LEE Jaeman
    • 京都大学大学院工学研究科建築学専攻 大学院生 Graduate Student, Dept. of Architectural Engineering, Kyoto Univ.
    • 谷 昌典 TANI Masanori
    • 神戸大学大学院工学研究科建築学専攻 助教・博士(工学) Assist. Prof., Dept of Architecture, Kobe Univ., Dr. Eng.
    • 河野 進 KONO Susumu
    • 京都大学大学院工学研究科建築学専攻 准教授・Ph.D. Assoc. Prof., Dept of Architectural Engineering, Kyoto Univ., Ph. D.
    • 坂下 雅信 SAKASHITA Masanobu
    • 京都大学大学院工学研究科建築学専攻 助教・博士(工学) Assist. Prof., Dept of Architectural Engineering, Kyoto Univ., Dr. Eng.
    • 西山 峰広 NISHIYAMA Minehiro
    • 京都大学大学院工学研究科建築学専攻 教授・博士(工学) Prof., Dept of Architectural Engineering, Kyoto Univ., Dr. Eng.

Abstract

Seven half-scale post-tensioned precast concrete beams were tested under anti-symmetrical flexure. The experimental parameters were shear span ratio and shear reinforcement ratio. Multi-strands and high strength shear reinforcement with nominal yield strength of 785 MPa were used as post-tensioning steel and shear reinforcement, respectively. Yielding of shear reinforcement was not observed in any of the specimens. The flexural capacity evaluated by the ACI rectangular concrete stress block with plane section assumption agreed well to the experimental results. The shear capacity was estimated by the design equation 71.2a in the AIJ Standard for Structural Design and Construction of Prestressed Concrete Structures. The experimental results collected by literature survey to past research revealed that shear failure modes could be related to each of the experimental parameters (shear span ratio, shear reinforcement strength and shear reinforcement ratio).

Journal

  • Journal of Structural and Construction Engineering (Transactions of AIJ)

    Journal of Structural and Construction Engineering (Transactions of AIJ) 75(653), 1335-1342, 2010

    Architectural Institute of Japan

Codes

  • NII Article ID (NAID)
    130004507886
  • Text Lang
    UNK
  • ISSN
    1340-4202
  • Data Source
    J-STAGE 
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