Axial Compression Performance of Ultrahigh Strength Spiral Stirrups Confined High Strength Concrete Columns
JING Chenggui
YOU Hui
XU Zhongheng
CHEN Zongping
Abstract：To investigate the axial compression performance of ultrahigh strength spiral stirrup confined high strength concrete columns,32 cylinder specimens were designed and manufactured with the concrete strength grade,spiral stirrup ratio and spiral stirrup yield strength as the variation parameters.The results show that the ultrahigh strength spiral stirrup has a longer elastic stress stage,which can effectively overcome the high brittleness problem of high strength concrete,and can also ensure that the plastic deformation of high strength concrete under compression is greater than 3.00%.The peak stress,peak strain and axial compressive ductility coefficient of specimen with ultrahigh strength(1 774 MPa)spiral stirrup confined concrete are 1.4,4.4 and 1.6 times to those of specimen with ordinary strength(432 MPa)spiral stirrup confined concrete,respectively.
Keywords：ultrahigh strength steel wirespiral stirruphigh strength concreteconfinement effectaxial compression performance
Publication Date：2025-08-30
Online Publishing Date：2025-09-05(First online date of this platform, not the publication date of the document)
Pages：9( 774-781,815 )