Unified calculation method of uniaxial compressive mechanical properties of concrete at high temperatures

被引：0

作者：

Ding, Fa-Xing ^{[1
]}

Yu, Zhi-Wu ^{[1
]}

Tang, Guo-Qing ^{[1
]}

机构：

[1] Cent S Univ, Coll Civil Engn & Architecture, Changsha 410075, Peoples R China

来源：

Advances in Structural Engineering:Theory and Applications Vols 1 and 2 | 2006年

关键词：

concrete; mechanical properties; stress-strain relationship; high temperature;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Presently, researchers in China adopt divisional description for the uniaxial compressive mechanic-cal properties at high temperatures of normal-strength concrete (with compressive cube strengths f(cu) up to 60MPa) and high-strength concrete (with f(cu) between 60MPa and 100MPa), which leads to big error of calculation results of formulas for normal and high-strength concrete at divisional borderline, even poor applicability. Based on reanalyzing test results of unaxial compressive mechanical properties of concrete at high temperatures in China, which compressive cube strengths of concrete are from 20MPa to 80MPa, unified formulas for uniaxial compress-ive strength, elastic modulus and strain at peak uniaxial compression and mathematical equations for unaxial compressive stress-strain relationship of these grades of concrete at high temperatures were suggested.

引用

页码：795 / 799

页数：5