Axial Compression Performance of High Ductility Fiber Reinforced Concrete-Steel Tube-Concrete Composite Columns
PENG Biao
HU Hongsong
JI Yunpeng
Abstract：A new type of high ductility fiber reinforced concrete-steel tube-concrete(HDCSTC)composite column was proposed.The effect of number of screw rows,screw strength and nut type on the axial compression performance was studied.The results show that increasing the number of screw rows can effectively improve the post-peak ductility of the specimen.The increase of screw strength has no significant effect on the ductility of specimens with one row of screws,but has great effect on the ductility of specimens with two rows of screws.The hanging ring nut can establish an effective tensioning knot with the outer high ductility fiber reinforced concrete,and improve the post-peak performance of the specimen.The HDCSTC composite column has the same excellent axial compression performance as the reinforced concrete column,and the construction is convenient and has no technical limitation,which is worthy of popularization.
Keywords：steel tube-concrete composite columnhigh ductility fiber reinforced concreteaxial compression performanceductility
Publication Date：2024-11-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 986-995 )