シマザキ カズシ   Shimazaki Kazushi
  島﨑 和司
   所属   神奈川大学  工学部 建築学科
   職種   教授
言語種別 英語
発行・発表の年月 2018/11
形態種別 その他論文
査読 査読あり
標題 Ultimate Bending Strength for Shear Design of Precast Pre-stressed Concrete Beams Using Unbonded Tendons
執筆形態 共著
掲載誌名 The 7th Asia Conference on Earthquake Engineering
掲載区分国外
巻・号・頁 ACEE0007(ACEE0007)
著者・共著者 Shimazaki, K. and Shirai, Y.
概要 Precast prestressed (PCaPS) concrete beams using unbonded prestressed concrete (PC) bars are damaged only at their joints during an earthquake and are easily repaired. When a PCaPS concrete beam deforms under an antisymmetric bending moment, it tends to extend geometrically, and the compressive force increases. As the compressive force increases, so do the bending strength and the shear force acting on the member. For shear design, it is necessary to evaluate the increase in axial force accompanying the deformation. In this paper, the increase of axial force considering geometrical elongation is evaluated by a simple macro model for a PCaPS concrete beam with parallel-positioned PC bars. Experimental results can be simulated by the proposed evaluation formula for the shear design of an unbonded PCaPS concrete beam with linearly arranged PC bars.