Experiment and Numerical Study on the Flexural Performance of Concrete Beams Reinforced with Corrugated Steel Plates
[Objective]In order to study the local load transfer mechanism and mechanical properties of tunnel lining reinforced with corrugated steel plate lining.[Method]The tunnel lining unit was regarded as a beam unit,and a bending performance test of concrete beam reinforced with corrugated steel plate was carried out.Es-tablish a corresponding three-dimensional refined finite element model,verify the model through test results,and analyze the load transfer mechanism.[Result]Research results show that compared with unreinforced beams,the ultimate load of beams reinforced with corrugated steel plates is increased by 30%to 41%,and the ultimate load increases with the increase in the number of anchor bolts.The relative slip between the corrugated steel plate and the concrete structure decreases as the number of anchor bolts increases.At the initial stage of loading,the corrugated steel plate is in the neutral layer position,and the strain is basically zero;after reaching the crack-ing load,the entire corrugated steel plate peak is in a compressive state,while the corrugated steel plate trough is always in a tensile state.[Conclusion]Finally,through the finite element software analysis,the failure mode of the specimen and the load-strain of the corrugated steel plate are verified.The simulation results are in good agreement with the experimental results.
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