Effect of openings through sheath on shear behaviors of beam-column joint in post-tensioned precast frame

Kaito Yamashita, Yasuji Shinohara, Shinji Kishida

研究成果: Article

抄録

3-D finite element analyses were conducted on post-tensioned precast concrete frames to investigate the shear behaviors of beam-column joints having some openings through sheaths. The compressive damage and confining effect in the beam-column joints were numerically estimated based on the 3-D stress state. Analytical results indicated that the shear strength of the beam-column joint decreased considerably with increasing opening ratio without beams installed orthogonally. If, however, the orthogonal beams were installed, the shear strength of the beam-column joint increased by 20 % and the decrease in shear strength due to opening was softened because a high confining pressure was generated.

元の言語English
ページ(範囲)1449-1459
ページ数11
ジャーナルJournal of Structural and Construction Engineering
82
発行部数739
DOI
出版物ステータスPublished - 2017 9 1

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Shear strength
Precast concrete

ASJC Scopus subject areas

  • Architecture
  • Building and Construction

これを引用

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abstract = "3-D finite element analyses were conducted on post-tensioned precast concrete frames to investigate the shear behaviors of beam-column joints having some openings through sheaths. The compressive damage and confining effect in the beam-column joints were numerically estimated based on the 3-D stress state. Analytical results indicated that the shear strength of the beam-column joint decreased considerably with increasing opening ratio without beams installed orthogonally. If, however, the orthogonal beams were installed, the shear strength of the beam-column joint increased by 20 {\%} and the decrease in shear strength due to opening was softened because a high confining pressure was generated.",
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T1 - Effect of openings through sheath on shear behaviors of beam-column joint in post-tensioned precast frame

AU - Yamashita, Kaito

AU - Shinohara, Yasuji

AU - Kishida, Shinji

PY - 2017/9/1

Y1 - 2017/9/1

N2 - 3-D finite element analyses were conducted on post-tensioned precast concrete frames to investigate the shear behaviors of beam-column joints having some openings through sheaths. The compressive damage and confining effect in the beam-column joints were numerically estimated based on the 3-D stress state. Analytical results indicated that the shear strength of the beam-column joint decreased considerably with increasing opening ratio without beams installed orthogonally. If, however, the orthogonal beams were installed, the shear strength of the beam-column joint increased by 20 % and the decrease in shear strength due to opening was softened because a high confining pressure was generated.

AB - 3-D finite element analyses were conducted on post-tensioned precast concrete frames to investigate the shear behaviors of beam-column joints having some openings through sheaths. The compressive damage and confining effect in the beam-column joints were numerically estimated based on the 3-D stress state. Analytical results indicated that the shear strength of the beam-column joint decreased considerably with increasing opening ratio without beams installed orthogonally. If, however, the orthogonal beams were installed, the shear strength of the beam-column joint increased by 20 % and the decrease in shear strength due to opening was softened because a high confining pressure was generated.

KW - Beam-column joint

KW - Confining effect

KW - Degree of damage

KW - Opening

KW - Post-tensioned precast

KW - Shear behaviors

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