Study on Strength of Concrete Plates under Point Load

概要

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The main purpose of this paper is to investigate, both theoretically and experimentally, the effects of support rigidities and carbon fiber reinforcement for concrete plates under point load on the ultimate strength and crack patterns, and to ensure the adaptability of the nonlinear finite element analyses to evaluate the ultimate strength and crack patterns for concrete plates. Two different supporting conditions for plates, one of which was a Point-Type support at four coner points and the other of which was a Beam-Type support by edge beams fixed at reaction frames with bolts, were investigated. The experimental study was conducted on small-scaled plain and carbon fiber reinforced concrete (CFRC) plate specimens. Point load was applied vertically at the center of plate surface up to the final failure. The theoretical study was conducted using the material and geometrical nonlinear finite element analyses. The effects of support conditions and carbon fiber reinforcement on plate strength and crack patterns, and the adaptability of the nonlinear finite element analysis to evaluation of the plate strength are discussed.