繊維補強コンクリートの曲げ破壊挙動に関する解析的研究

概要

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In fiber reinforced concrete, fibers are added to improve the brittle fracture of plain concrete. However, the relationship between the fracture behavior of fiber reinforced concrete and the property of fiber is not necessarily grasped. In this paper, in order to investigate the bending fracture behavior of fiber reinforced concrete, an analytical study is carried out by visco-elastoplastic suspension element method (VEPSEM). The fiber element simulated as static elastoplastic element in earlier VEPSEM is modelled as dynamic element in this analysis. It is shown that the analytical results obtained by using this dynamic fiber element can comparatively express the experimental ones. The maximum load becomes high and the descending portion of load-deflection curve becomes ductile. The cause of these results can be explained from the internal cracks occurred by bridging effect of fiber.
社団法人日本建築学会の論文
2006-04-30