Abstract
The steel plate-concrete structure, with its advantages of modular construction, good seismic capacity, and strong impact resistance, has been gradually replacing the reinforced concrete structure in the containment vessel and internal workshop structure of nuclear power plants in recent years. In this study, the out-of-plane single-point loading test and parametric finite element simulation analysis were conducted on five steel plate-concrete wall slab specimens with different stud spacings, shear span ratios, and steel contents. Results showed that the steel plate-concrete wall slab under the out-of-plane load had the same failure mode as that of an ordinary reinforced concrete wall. The out-of-plane shear capacity of the steel plate-concrete wall slab increased significantly in the case of numerous studs. With the increase in shear span ratio, steel plate-concrete members suffered a bending failure. When the steel content was low, they had diagonal tension failure, such as a rare-reinforced concrete wall. The out-of-plane bending and shear mechanism of the steel plate-concrete shear wall was studied theoretically, and the calculation formulas of the bending and shearing capacities were derived.
Highlights
Erefore, the steel plate-concrete structure has been intensively applied in engineering, in many important infrastructures and key projects
In 2011, Varma et al (American scholars) conducted out-of-plane shear tests on two groups of steel plate-concrete beam specimens with and without stiffeners; they studied the shear span ratio, steel plate thickness, shear reinforcement ratio, and other related parameters. e results showed that the out-of-plane shear capacity of the steel sheet concrete wall is provided by the shear resistance of the shear reinforcement and concrete [10]
A series of experiments were conducted on the out-of-plane behaviors of the steel-concrete composite shear wall on the basis of the structural form of the CAP1400 steel-concrete composite shear wall. e aim is to analyze the influences of shear span ratio, section height, and stud spacing on the out-ofplane mechanical properties of the steel-concrete composite shear wall under a large span
Summary
Specimens were designed and tested under three-point loading to study the out-of-plane behavior of steel-concrete composite shear walls. e details of the tests are discussed . E test data included the following: (1) vertical load exerted by the hydraulic jack on top of the loading beam (No W4), (2) vertical displacements at the midspan and one-fourth span of the slab (No W3), (3) vertical displacements at the supports (Nos. W1 and W2), (4) sliding condition between the surface steel plate and inner concrete (No W1), and (5) strain of infill concrete under loading. Five gauges were arranged 10 mm away from the upper surface steel plate, along the beam length direction with the midline of the beam as the midpoint.
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