To study the interface bonding and sliding performance of corrugated steel plate concrete,considering the thickness of concrete cover,concrete strength,embedded length and stirrup ratio,the push out tests of 12 cor-rugated steel plate concrete specimens were completed,the failure modes of the specimens were analyzed and summarized,the composition of interfacial bonding force at different stages was analyzed based on the interfacial bonding slip mechanism,and the bonding performance of corrugated steel plate concrete was studied from the per-spective of interface energy consumption.The results show that the concrete cracks at the trough develop from the outside to the inside.Under the action of interfacial compressive stress and stirrup tension,the crack of concrete at wave ridge is 45° with the extension line of wave ridge.The ultimate bond strength of the interface is between 0.99 and 1.86 MPa,and the residual bond strength is between 0.25 and 0.63 MPa.Increasing the embedded length can improve the elastic deformation energy of the interface and the ultimate bond strength of the interface.Finally,con-sidering the four influencing factors,the bond stress-slip constitutive relation expression of the interface between corrugated steel plate concrete was proposed and verified by finite element analysis.It is found that the simulated curve is in good agreement with the experimental curve,which shows that the proposed constitutive relation ex-pression is reasonable and accurate,and can provide a reference for the finite element analysis of corrugated steel plate concrete structure.
corrugated steel plate-concretebond-slipenergy consumption of interfaceconstitutive relation-shipfinite element analysis
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