Study On In-plan Seismic Performance Of The Double Steel Plate Concrete Composite Wall Of Nuclear Plant Structure

In the process of construction and development of Nuclear power CAP 1400, steel plate concrete structure is used in reactor building's internal structure module and other nuclear safety related structural module. Recently, double steel concrete composite structure is rarely researched in the field of architectural structure, which lacks specific code standard and needs to be further studied. This thesis mainly concluding the following aspects:1)This paper has studied quasi-static seismic performance experimental research on different shear connector type and double steel plate concrete composite wall in order to research earthquake resistance of shield building adopted double steel plate concrete composite wall for nuclear power project. Test model designs four pairs of steel plate concrete composite wall according to the one five scale to analyze the compound wall's bearing capacity ductility, stiffness, attenuation, hysteresis property, energy dissipation capacity, and failure characteristics by experiments. The result shows that as the thickness ratio decreases, the specimen ultimate bearing capacity improved unconspicuously but thickness ratio has a significant effect on stud breaking point whether it reaches component's ultimate bearing capacity or not. In addition, stiffener joints has a significant impact on component's ultimate bearing capacity, integral rigidity, ductility and energy dissipation. Moreover, four components' internal concrete cracking load are the same and the seismic performances are good.2)Based on the experiment of double steel plate composite wall and by using nonlinear finite element software named ABAQUS to analyze horizontal monotonous loading of data of analog simulation on specimen model and further to compare and mutually authenticate between simulated results and stimulated results, the experiment finally shows that simulation curve and test curve not only match each other but also the breaking model are the same. Steel plate thickness and shear form belongs to the sensitivity factors, within the scope of the concrete strength and thickness ratio on the specimen is not significant.3)According to experiment and finite element analysis result, this thesis puts forward to the constructional measures concerning double steel plate concrete composite wall as well as corresponding contermeasures on any problems that may occur: steel plate concrete wall owns stronger destructive power, however junctional concrete between steel-concrete and reinforced concrete are extremely tend to be crushed. Therefor, following test component design may be able to design the foundation beam in the form of steel-encased and actually to ensure enough anchoring strength between steel-concrete structure and reinforced concrete structure in practical engineering.4)The conclusion based on existing literature and existing research results and test results and simulation results can be drawn that the double steel plate concrete wall's bending formula is reinforced concrete's formula of shear wall is not applicable to double steel plate concrete wall's shear calculation, which needs to be further researched in the future.