Shear Capasity Evaluation of R/C Members Considering Longitudinal Bars Cut Off, Bond, Anchorage, and Strain Rate

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289185
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Hokkaido University
• Principal Investigator: NISHIMURA Koshiro 北海道大学, 工学(系)研究科(研究院), 准教授 (00343161)
• Co-Investigator(Kenkyū-buntansha): 大西 直毅 北海道大学, 工学(系)研究科(研究院), 助教 (20579784)
• Research Collaborator: KONDO Haruki ; SASAI Kazuya ; SAKAMOTO Yurie ; SATO Keita ; SHINBO Takashi ; TERAI Toru ; NAGASAWA Takaaki ; HORITA Atsushi ; MAEKAWA Yuta ; MIYAJI Norio ; MORI Mayu ; YAGIURA Takafumi ; YAMAGUCHI Yuta
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 鉄筋コンクリート / せん断強度 / 付着 / 多段配筋 / カットオフ / 軸力

Outline of Final Research Achievements

Loading tests of reinforced concrete columns and multi-layered beams, and pull out tests of tension reinforcing bars, were carried out. An influence of bond and axial force on the capacity of the member was investigated. Especially, the influence of multi-layered longitudinal bars and cut-off bars was discussed. The shear capacity formula for members failed in shear and bond splitting was improved to be applied to members with multi-layered longitudinal bars including cut-off bars. In addition, inclusive evaluation method to design the flexural members of sufficient performance was proposed; which were consideration of axial force and strain rate, checking method for bond around cut-off bars, and evaluation method of deformation capacity after flexural yielding.

Free Research Field

建築構造、コンクリート構造