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摘要:
A shear wall with concealed steel plate deep beams contains CFST columns, steel plate deep beams, RC walls and connecting components. Low cyclic loading tests on seismic behavior of five 1/5 scaled composite shear wall specimens were carried out. The loading was divided into two stages. Loading stage one focused on the seismic behavior of specimens before the drift of 1/50, while stage two focused on the seismic behavior of specimens repaired after the first stage, and the repair was carried out by welding thin steel plates between the steel tubular columns. Failure characteristics, hysteretic characteristics, load-bearing capacity, stiffness degradation, ductility, and the energy dissipation of specimens before and after repair were studied. Study shows that: the CFST columns, steel plate deep beams, RC walls and the corresponding connecting components can collaborate closely and exhibit a good seismic behavior; the deformation behavior differs at different stages, in which the deformation is close to that of entire shear walls before the concrete wall cracking, and close to shear wall with vertical slit after the slippage between the steel tube and concrete wall.
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