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- W2372031024 abstract "The carbon fiber reinforced polymer(CFRP) composites have been widely used in strengthening structures,especially the concrete filled-steel tube(CFT) structures because they have many advantages such as high strength,light quality,good energy absorption and easy construction.Based on the twin shear unified strength theory,the mechanical behavior of the square steel tube short columns filled with concrete and inner CFRP circular tube is analyzed.The effects of intermediate principal stress and the strength difference in tension and compression are considered in the unified strength theory and hence they can be applied to many kinds of materials under complex stress state.The restriction upon the core concrete by the inner CFRP circular tube,the strength reduction factor,the equivalent reduction factor,and the thickness side ratio effect are taken into account in the theoretical analysis.The load-carrying capacity formula of the square steel tube short columns filled with inner CFRP circular tube under axial compression is deduced.Parametric studied are carried out to evaluate the effects of intermediate principal stresses,CFRP deployment ratios and material strength parameters on the load-carrying capacity of the column.The formula is verified by a comparison between calculation results and experimental data.Results show that the inner CFRP circular tube can effectively restrain the core concrete.This new type of structural component makes full use of the advantages of CFRP,concrete and steel materials.The theoretical formula can provide theoretical basis for the structural optimization design of the concrete filled-steel tube." @default.
- W2372031024 created "2016-06-24" @default.
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- W2372031024 date "2009-01-01" @default.
- W2372031024 modified "2023-09-23" @default.
- W2372031024 title "Mechanical behavior of concrete filled square steel tube short columns with inner CFRP circular tube" @default.
- W2372031024 hasPublicationYear "2009" @default.
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