| Because of the large out-of-plane stiffness and large bearing capacity perpendicular to the wave edge direction,the corrugated steel plate has been widely studied and applied in composite slabs,shear walls,bridge steel webs,beams and columns with corrugated steel webs.The corrugated steel plate concrete structure refers to the composite structure with corrugated steel plate arranged in concrete and certaining structural reinforcement and shear connectors.In practical engineering,arranging blindly shear connectors on the surface of corrugated steel plate will not only will it increase the quantity of the project,but also the cost of the project.Currently,few research exploit the bond-slip behavior and shear transfer mechanism of corrugated steel plate concrete structures or components with bolted connectors at home and abroad.The bond-slip properties of corrugated steel plate and concrete are studied clearly,and the stud connectors are reasonably arranged in the design to reduce the project cost,which will provide the basis for the application of the bolted corrugated steel sheet-concrete structure.Therefor,this paper slects the bond-slip behavior between corrugated steel splate and concrete as the research object,the following research work is specifically carried out by adopting a combination of experimental research and finite element analysis(1)This paper take the stud and the thickness of steel plate as the influencing factors.Eleven corrugated steel plate concrete composite members with studs and one corrugated steel plate concrete member without studs on the surface of corrugated steel plate are designed to observe the development rule and failure pattern of cracks,and the load-slip curves at the loading end and the free end are summarized as well.(2)Based on the experimental data,the characteristic bond strength and corresponding characteristic slip are summarized and analyzed,the constitutive relationship of the average bond strength-the load end slip is established.(3)Based on the bond-slip constitutive relationship obtained from the experimental study,the simulation of the specimens was carried out by using ANSYS finite element software.The accuracy of the bond-slip constitutive relation was checked by comparing with the experimental results.The failure mode of the stud is in agreement with the experimental results.(4)By combining the stress mechanism of the pushed-out specimens and taking a test specimen of corrugated steel-concrete composite shear wall with studs as an example,the finite element model of corrugated steel plate-concrete composite shear wall considering bond-slip is established by using ANSYS software.The stress process of the specimens is analyzed,The influence of studs on the compatibility of deformation between corrugated steel plate and concrete wall is studied.And the skeleton curves are compared with those of the finite element model without considering bond-slip and the test specimen.The accuracy of the model considering bond-slip is proved.Considering bond slip,the effects of different parameters(stud spacing,diameter,flange thickness,web thickness,steel plate thickness,wall thickness,axial compression ratio,shear span ratio and reinforcement ratio)on the bearing capacity and deformation of composite shear walls are analyzed. |
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