Abstract
We studied the effect of the inclination angle of stirrups and wire mesh on the web-crushing strength of reinforced concrete I-beams beams. Experimental studies were carried out in Kuban State Technological University. The variable parameters of the tested specimens included concrete compressive strength, level of prestressing, cross-sectional shape, shear span, shear reinforcement ratio and angles of inclination of stirrups or wire mesh. The strength of beams was calculated with the Cyclic Softened Membrane Model for reinforced concrete (CSMM), developed at the University of Houston and implemented in the OpenSees software package. The modeling of the web of the beams was fulfilled with quadrilateral finite elements with the assigned material FAReinforcedConcretePlaneStress. The flanges of the beams resisting the bending moment were modeled with nonlinear volumetric elements having fiber section. Uniaxial Kent-Scott-Park concrete material and uniaxial bilinear steel material were assigned to the flanges. Calculation results are close to experimental data having wide variation of the materials properties and structural parameters of beams.
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