The steel plate-concrete structure, with its advantages of modular construction, good seismic capacity, and strong impact resistance, has\nbeen gradually replacing the reinforced concrete structure in the containment vessel and internal workshop structure of nuclear power\nplants in recent years. In this study, the out-of-plane single-point loading test and parametric finite element simulation analysis were\nconducted on five steel plate-concrete wall slab specimens with different stud spacings, shear span ratios, and steel contents. Results\nshowed that the steel plate-concrete wall slab under the out-of-plane load had the same failure mode as that of an ordinary reinforced\nconcrete wall. The out-of-plane shear capacity of the steel plate-concrete wall slab increased significantly in the case of numerous studs.\nWith the increase in shear span ratio, steel plate-concrete members suffered a bending failure. When the steel content was low, they had\ndiagonal tension failure, such as a rare-reinforced concrete wall. The out-of-plane bending and shear mechanism of the steel plateconcrete\nshear wall was studied theoretically, and the calculation formulas of the bending and shearing capacities were derived.
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