# Study on Shear Resistance and Structural Performance of Corrugated Steel-Concrete Composite Deck
## 7 Conclusions  
The new combined steel-concrete deck structure has many advantages over traditional reinforced concrete decks and steel-composite decks in terms of stress performance. Parametric analysis and structural design optimization were carried out to ensure optimum performance. ABAQUS was used to model and study the shear resistance of the pinned shear connection keys in composite decks and to investigate the effect of different types of shear connection keys on the load-bearing properties of composite decks. (1) The individual ultimate shear load capacity of the shear studs as shear keys in the finite element simulation of the launch experiment reached 103.4 kN, with a shear stiffness  
Figure 21: Load–stress curve for concrete at point a.  
of 370.5 kN/mm. The shear studs' shear keys can play a better role in transmitting the shear force in the steel-concrete composite structure, and the whole member also reflects the obvious ductility characteristics in the shear test. Therefore, it is still worthwhile to promote the use of shear studs as shear connection keys for new deck structures where the direction of shear action is not clear enough. (2) The strain, stress data, and load-displacement curves of the corrugated steel-concrete composite deck slab under stress were studied, and the reasonableness of its stress mechanism was analyzed. The conclusion is that the concrete and the bending steel plates can work well together under stress. (3) The corrugated steel-concrete deck slab has greater load-bearing capacity and stiffness than the traditional reinforced concrete deck slab and the steel-concrete deck slab but has less dead weight than the latter two. (4) The finite element modeling of the shear studs was carried out in combination with the combined structure of corrugated steel-concrete to investigate the stress and damage mechanisms of the shear studs under the action of shear force, and the influence of the height of the shear studs on the shear load capacity of the shear studs was investigated by studying the structural parameters of the shear studs with height-to-diameter ratios \(h_{s}/d_{s}\). It is concluded that the shear load capacity of the shear studs increases with the increase in the height-to-diameter ratio for different diameters of the shear stud shear joint, with the range of increase being between 2% and 23%. However, when the diameter of the shear studs exceeds 22 mm, the increase in the ultimate shear capacity of the shear studs slows down as the height-to-diameter ratio increases. Therefore, in the actual design of the composite deck, the height-to-diameter ratio of the shear studs should be in the range of 9 to 12. (5) The effect of pinned shear keys and PBL open-cell steel plate shear keys on the slip and peel resistance and the positive section load-bearing performance of the composite deck structure were investigated in conjunction with the form of a corrugated steel-concrete composite deck slab. The results show that the maximum longitudinal slip at the end and mid-span of the PBL perforated steel plate is only 0.28 mm and 0.0158 mm, respectively, which is 31% and 36% less than the corresponding values for the PBL perforated steel plate. It can be seen that PBL perforated steel plates are more effective in resisting slip and peel than shear studs. There is little difference in the overall ultimate load-carrying capacity of the deck structure between the use of PBL perforated steel plates and pins as shear connection keys for the deck. When using a rigid shear key such as a PBL plate as the shear key for a composite deck, attention needs to be paid to the local crushing of the concrete due to stress concentration. Not applicable. All data generated or analyzed during this study are included in this article. All data included in this study are available upon request by contact with the corresponding author.