Experimental Study On Flexural Performance Of Prefabricated Cage System Reinforced Concrete Beam

A new steel reinforced system called Prefabricated Cage System ReinforcedConcrete was proposed by foreign scholars Mohammad Shams and Halil Sezen in2005years. They studied the basic mechanical properties of short columns andbeam-columns joints. Currently Prefabricated Cage System Reinforced Concrete yetto see the results of relevant research in the domestic. Prefabricated Cage System isshort for PCS, which can be prefabricated on the plant. The PCS is fabricated byperforating hollow cold formed or steel sheets. The resulting PCS acts as transverseand longitudinal reinforcing steel, wording compositely with the surroundingconcrete to resist the applied loads. This paper studied the flexural properties ofPrefabricated Cage System Reinforced Concrete beams, from the experimentalobservations, theoretical analysis and numerical simulation to understand it. Theauthor also analyzed the PCS beams bearing capacity and deformation properties.Relevant research results provide evidence for PCS further research and analysis.Eight beam specimens reinforced with PCS and two beams specimens reinforcedwith ordinary steel were tested under bending moment. By observing beam with PCSspecimens failure process under different bottom longitudinal steel ratio and differentlateral spacing constraints.Even observing the failure process of ordinary steelconcrete beams. From the experimental data, the author discussed load-displacementcurve, plate load-strain curve, concrete strain curve and PCS ductility curve. Theresults show that: with the bottom of the vertical distribution increases the amount ofsteel, the PCS beams had higher capacity and deformation capacity, ductility better.The smaller transverse leaf spacing constraints, PCS beams had higher capacity anddeformation capacity, but the ability to enhance the beam deformation superior toenhance capacity. Comparative with the same amount of steel reinforced concrete, thePCS beams had higher capacity, smaller span deflection than the ordinary steel beams.But the ordinary steel beams had better ultimately deformation than PCS beams.By using the methods of stress-strain and influence coefficient, the author cameup with the computational formula for analysis the cracking moment of beams. According to the concrete plane assumption of the analysis section stress, the authorcame up with bearing capacity formula of PCS beams. From Prefabricated CageSystem Reinforced Concrete load-displacement curve, contacting with geometryand physical relationship, the author came up with the formulas of short-termflexural stiffness and deflection.By using the ABAQUS finite element software to build Prefabricated CageSystem Reinforced Concrete beams numerical model. The calculation results ofnumerical model were fitting with the test data. Material properties and constitutiverelation were chosen more reasonable. As concrete was continuous, modes wasignore the slip between concrete and steel. The author also extracted stress–strainpictures from PCS and concrete the model results, Analysis of the PrefabricatedCage System Reinforced Concrete beams stress-strain distribution under differentparameters.