Abstract
Steel plate-concrete shear walls (SPSW) are used as the containment in nuclear power stations. However, the influence of holes and axial loading on the behavior of steel plate-concrete shear walls is neglected in most studies. Thus, it is necessary to understand the seismic behavior of SPSW members with holes in order to avoid the potential risks for nuclear power stations. In this study, a series of specimens were tested by low-cycle reciprocal loading. The specimens were designed with different holes to simulate real members in nuclear power stations. A hysteretic curve of specimens was obtained from a low-cycle reciprocal test to discuss the seismic behavior of steel plate-concrete shear walls (SPSW). Moreover, effects of axial compression ratio, hole size, thickness of the steel plate, and hole position on the hysteretic performance of SPSW were analyzed. The horizontal ultimate bearing capacity of SPSW specimens was estimated using the norms of the Architecture Institute of Japan and the calculation method of Ono reduction rate. Results provide theoretical references for the design and application of SPSW with holes.
Highlights
Steel plate-concrete shear walls (SPSW) serve as the containment of AP1000 and CAP1400 nuclear power stations and of the stress components of the internal plants in nuclear power stations
The influence of holes and axial loading on the behavior of steel plate-concrete shear walls are neglected in most studies
A series of low-cycle reciprocal loading tests were conducted on SPSW specimens with holes in this study
Summary
Steel plate-concrete shear walls (SPSW) serve as the containment of AP1000 and CAP1400 nuclear power stations and of the stress components of the internal plants in nuclear power stations. Wang et al [6,7,8] studied the seismic behavior of the steel plate-reinforced concrete shear wall by using the quasi-static test. Wang et al [15] investigated the hysteretic performance of the SPSW wall by using Open Sees software Parameters such as the steel plate ratio, axial compressive load ratio, concrete strength, and web reinforcement ratio were analyzed. A series of low-cycle reciprocal loading tests are conducted on an SPSW structure with holes, obtaining the ultimate bearing capacity and failure mode of the structure. The influences of holes and reinforcing measures and axial loads of components on the seismic behavior of an SPSW structure are analyzed, determining the difference between theoretical and test values. The seismic behavior and stress mechanism of SPSW specimens are discussed theoretically
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