異なるせん断スパン比を持つ鉄筋コンクリート単純梁のせん断挙動に関する数値解析的研究

概要

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The objective of this paper is to examine the performance of constitutive models for describing the cracking behavior and the load-displacement characteristics of shear failure of concrete structures. Concrete simple deep beams in different shear-span ratios (0.5 to 2.0) were analyzed. In addition, in order to expand the comprehension on the effect of constitutive model parameters in the deep beams to slender beams, the beams in the shear-span ratio of 4.0 were numerically simulated. The structural analysis was carried out by means of nonlinear finite element method. A smeared crack approach using rotating crack model without shear strain on the crack plane was employed. Based on this analytical work, the effect of the compressive strength reduction after cracking and the post-peak ductility in the constitutive law on shear fracture behavior for different shear-span ratios was discussed.
2001-06-30