Experimental Investigation on the Seismic Behavior of Ultra-High Performance Concrete Filled Steel Tubular Columns
Heng Cai, Jialin Yuan, Lihua Xu
Abstract
In this work, a total of nine ultra-high performance concrete (UHPC) filled steel tubular columns (UHPCFSTs) were fabricated and tested under cyclic loading. The results indicated that UHPCFSTs mainly exhibited flexural failure mode, compression-flexure failure mode and welding line fracture, and it changed from flexural failure mode to compression-flexure failure mode when the axial compression ratios exceeded 0.3. The elastic and ultimate drift ratios of UHPCFSTs were within the ranges of 1.37–2.05% and 2.38–4.32%, respectively, and the equivalent viscous damping coefficients were within the range of 0.197–0.358 when they failed, UHPCFSTs could sever as good choices in high seismic intensity areas.
Topics & Concepts
Structural engineeringFlexural strengthMaterials scienceFailure mode and effects analysisWeldingCompression (physics)Mode (computer interface)Ultimate tensile strengthEngineeringComposite materialGeotechnical engineeringComputer scienceOperating systemStructural Load-Bearing AnalysisStructural Behavior of Reinforced ConcreteConcrete Corrosion and Durability