| Due to its unique geometric cross-section,the corrugated steel plate has a large out-of-plane stiffness,buckling resistance perpendicular to the corrugation direction and shrinkage in the direction of the corrugation.The corrugated steel plate and the outer concrete are combined to form a corrugated steel plate concrete composite structure,and the corrugated steel plate and the concrete are interlocked and embedded,and the interface bonding is ensured to ensure the safe and cooperative work of the combined structure.As a commonly used connector for reinforcing interface bonding,studs have not been thoroughly studied in the role of corrugated steel plate and concrete composite structures.In this paper,the combination of experimental research and finite element numerical analysis is used to study the mechanical behavior of corrugated steel plate concrete composite components.The main research work and achievements are as follows:(1)In order to deeply study the shear transfer performance and slip mechanism of concrete-filled corrugated steel plate with studs,considering the influence of different parameters,11 corrugated steel concrete specimens with stud and one non-studded comparative test piece were designed,and standard launch test was carried out.The failure modes,crack modes,load-slip curve rules,strain distribution of corrugated steel plate and stud,and interface shear transfer performance of the specimens with studded were comprehensively studied.According to the test data,the optimal combination of corrugated steel plate with stud and concrete is obtained.(2)Nonlinear analysis of the launch test piece model was carried by the ABAQUS 6.13.Under the effect of interface bonding,the SPRING2 unit was used to simulate the test specimen with the stud,which has better accuracy.The simulated load-slip curve has a high degree of coincidence with the test load-slip curve,which verifies the reliability of the finite element analysis method.Regardless of the interface bonding between corrugated steel plate and concrete,the stress state of the stud is analyzed,and the real force model of the stud in concrete is proposed.(3)Taking two corrugated steel plate-concrete shear wall test specimens with 1:2 scale ratio as the prototype,a series of refined models were established by ABAQUS.The influence of the interface bonding,the diameter and spacing of the studs,whether to consider the arrangement of studs,and the thickness of the steel plate on the mechanical properties of the corrugated steel-concrete composite shear wall was analyzed.The results show that the effect of interfacial bonding on the bearing capacity of corrugated steel-concrete composite shear wall can not be neglected.Changing the diameter and spacing of the studs has little effect on the bearing capacity of corrugated steel-concrete composite shear wall.With the increase of the thickness of the corrugated steel plate,the bearing capacity of the corrugated steel plate-concrete shear wall is increasing,and the thickness of the corrugated steel plate is the main factor affecting the bearing capacity of the combined shear wall.In the case of considering the interface bonding effect,for the vertical corrugated steel-concrete composite shear wall,the stud can be arranged to increase the bearing capacity by about 2.5%.However,for horizontal corrugated steel-concrete composite shear walls,the placement of studs has no significant effect on the bearing capacity. |
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