Analysis of bending performance of locally reinforced concrete beams in compression zone based on finite strip method
Replacing the compression zone of concrete beams with ductile fiber cement-based composite materials,a locally reinforced concrete beam in the compression zone is prepared,which transforms the mode of fracture of super-reinforced concrete beams from brittle fracture of concrete to compressive ductility yielding of the reinforcement material in the local compression zone,thereby improving the ductility of super-reinforced concrete beams.In order to study the flexural behavior of locally reinforced concrete beams in compression zone,the finite strip method is adopted to establish the section moment-curvature model.With the help of software,a calculation program is compiled to analyze the moment-curvature relationship of locally reinforced concrete beams in compression zone,and a parametric analysis is carried out based on the verified model.The research shows that the model fitting results are consistent with the experimental results.The increase in local reinforcement height,the improvement of fiber-cement-based composite material strength and ultimate strength,and the increase in yield strain of fiber-cement-based composite material will all enhance the ductility of the beam.
local enhancement in the compressed areafiber cement based composite materialsductilitycompressive constitutive lawfinite strip method
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维普
