School;
of;
Civil;
Engineering,;
Tianjin;
University,;
Tianjin;
300072,;
China;
Tianjin;
Key;
Laboratory;
of;
Civil;
Engineering;
Structure;
and;
New;
Materials,;
Tianjin;
300072,;
China;
School;
of;
Civil;
Engineering,;
Hebei;
University;
of;
Technology,;
Tianjin;
300401,;
China;
密闭性能; 十字形柱; 箍筋; 混凝土柱; 混凝土抗压强度; 约束混凝土; 配箍特征值; 非线性关系;