摘要
介绍了几种用于改善钢管混凝土的受力性能的构造措施。这些构造措施包括设置套管、纵向加劲肋、角部隅撑、对拉片以及约束拉杆等。现有的理论与试验研究表明这些构造措施都能有效改善钢管对核心混凝土的约束作用以及钢管的局部屈曲性能,提高钢管混凝土构件的承载力与变形性能。对这些构造措施从改善原理、材料用量、施工难度与外观方面进行比较,指出各自的优势与不足。
In order to improve the mechanical behavior of concrete-filled steel tube (CFT), some constructional measures including setting sleeve pipe, longitudinal stiffeners, tie bars, tensile sheets and binding bars are introduced herein. Current theoretical and experimental investigations indicated that these measures could effectively improve the confinement of core concrete and the local buckling behaviors of steel plates, enhance the bearing capacities and deformation performance of CFT members. And comparison is made among these measures in the aspects of improvement principles, material dosage, construction convenience and appearance, revealed the superiorities and deficiencies of each one.
出处
《燕山大学学报》
CAS
2010年第4期359-363,共5页
Journal of Yanshan University
基金
国家自然科学基金资助项目(50538050)
关键词
钢管混凝土
构造措施
套管
纵向加劲肋
角部隅撑
对拉片
约束拉杆
CFT
constructional measures
sleeve pipe
longitudinal stiffeners
tie bars
tensile sheets
binding bars