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Unified formulations for corrugated double-skin composite shear walls under complex stresses
Abstract In engineering practice, complex stresses affect the shear capacity of corrugated double-skin composite shear walls (CDSCWs). However, existing design methods overlook the impact of complex stress states on the load-bearing capacity calculations for CDSCWs with different shear span ratios and external steel plate configurations. This poses significant challenges for researchers and design engineers. Therefore, there is an urgent need to develop a unified and accurate formula applicable to CDSCW sections with varying waveform profiles and double-skin composite shear (DSC) wall sections. In this study, equivalent truss models for CDSCWs and DSC walls were developed considering a single load and complex stresses. The criteria for determining the limit equilibrium states were then proposed, and the corresponding formulas for calculating the bearing capacity under complex stress conditions were derived. The equations were refined by modifying their constant coefficients using test data. Four hysteresis tests were conducted on CDSCW specimens with low shear–span ratios. The test results are valuable additions to the limited existing literature on CDSCWs with low shear–span ratios and the limited test data that can intuitively determine the category of limit equilibrium states. These serve as an important basis for the initial modification of relevant formula coefficients.
Highlights Equivalent truss models were established for both single load and complex stress conditions for corrugated double-skin composite shear wall (CDSCW), establishing the relationship and influence between the three loading conditions and the load-carrying capacity. The unified formulations for the bearing capacity under complex stress conditions were proposed, suited for calculating this capacity in CDSCWs, traditional double-skin composite (DSC) walls, and dovetailed profiled steel-concrete composite shear walls (DPSCWs). Experimental research on the hysteretic performance of 4 low shear-span ratio corrugated double-skin composite shear wall (CDSCW) specimens were conducted. All specimens exhibited ductile failure with X-shaped steel plate tears and concrete spalling at the mid-height position after buckling.
Unified formulations for corrugated double-skin composite shear walls under complex stresses
Abstract In engineering practice, complex stresses affect the shear capacity of corrugated double-skin composite shear walls (CDSCWs). However, existing design methods overlook the impact of complex stress states on the load-bearing capacity calculations for CDSCWs with different shear span ratios and external steel plate configurations. This poses significant challenges for researchers and design engineers. Therefore, there is an urgent need to develop a unified and accurate formula applicable to CDSCW sections with varying waveform profiles and double-skin composite shear (DSC) wall sections. In this study, equivalent truss models for CDSCWs and DSC walls were developed considering a single load and complex stresses. The criteria for determining the limit equilibrium states were then proposed, and the corresponding formulas for calculating the bearing capacity under complex stress conditions were derived. The equations were refined by modifying their constant coefficients using test data. Four hysteresis tests were conducted on CDSCW specimens with low shear–span ratios. The test results are valuable additions to the limited existing literature on CDSCWs with low shear–span ratios and the limited test data that can intuitively determine the category of limit equilibrium states. These serve as an important basis for the initial modification of relevant formula coefficients.
Highlights Equivalent truss models were established for both single load and complex stress conditions for corrugated double-skin composite shear wall (CDSCW), establishing the relationship and influence between the three loading conditions and the load-carrying capacity. The unified formulations for the bearing capacity under complex stress conditions were proposed, suited for calculating this capacity in CDSCWs, traditional double-skin composite (DSC) walls, and dovetailed profiled steel-concrete composite shear walls (DPSCWs). Experimental research on the hysteretic performance of 4 low shear-span ratio corrugated double-skin composite shear wall (CDSCW) specimens were conducted. All specimens exhibited ductile failure with X-shaped steel plate tears and concrete spalling at the mid-height position after buckling.
Unified formulations for corrugated double-skin composite shear walls under complex stresses
Li, Wentao (author) / Zha, Xiaoxiong (author)
2023-12-26
Article (Journal)
Electronic Resource
English