A Practical Stress-Strain Model for Confined Concrete
SHI Qingxuan
RONG Chong
ZHANG Ting
WANG Qiuwei
Abstract：Compression behavior of confined concrete was discussed.Lateral restriction mechanism of steel tube confined concrete and stirrups confined concrete was analyzed.Based on the twin shear unified strength theory and a series of experimental results,the uniform formulas to determine peak stress and peak strain were established and validated.Combining the Chinese current specification,practical stressstrain models of confined concrete were proposed and compared with experimental curves.Results show that the proposed formulas to determine peak stress and peak strain are accurate,and the proposed stressstrain models are more accurate,simple and useful.The proposed stress-strain models can be feasible in the nonlinear analysis of confined concrete.
Keywords：confined concretelateral restrictionunified strength theorypeak stresspeak strainstress-strain model
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 49-54 )