摘要
本文报导了18根不同套箍指标的钢管超高强混凝土短柱试件的实验研究。研究结果证明，采用钢管约束可以显著地改善超高强混凝土的延性，提高核心混凝土的强度，强度的增长幅度与套箍指标呈线性关系，在加载过程中钢管超高强混凝土的外形变化与普通钢管混凝土不同，掺入膨胀剂并不能提高钢管超高强混凝土的强度。
The test results of the mechanical properties of 18 samples of tubular extra-high strength concrete encased in steel tubes with different confinement indices have been studied and reported. They show that the steel tube can significantly improve the ductility and compressive strength of the core concrete. The increasing in strength is directly proportional to the confinement index Φ. No apparent change has appeared on the,external form of the extra-high strength concrete encased in steel tubes during the loading process. The incorporation of expansion agent cannot increase the strength of the extra-high strength concrete encased in steel tubes.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
1999年第1期10-15,共6页
Journal of Building Structures
关键词
钢管
超高强混凝土
短柱
极限承载力
力学性能
extra-high strength concrete encased in steel tubes, extra-high strength concrete,constitutive relationship
