摘要
体外预应力钢-混凝土组合梁是一种将现代预应力技术和普通钢-混凝土组合梁结合在一起的新型承重构件,与普通钢-混凝土组合梁相比,它主要有六大优点:1)提高极限承载力;2)扩大弹性工作范围;3)提高疲劳和断裂性能;4)充分利用材料性能,降低结构高度和自重;5)减小使用荷载下的变形;6)有利于混凝土裂缝的控制。该文系统综述了国内外学者在体外预应力钢-混凝土组合梁结构方面取得的研究成果,并对有待进一步研究的工作进行了展望。
An externally prestressed steel-concrete composite beam is a new type of structural member combining a steel-concrete composite beam and prestressing technique. Compared with traditional steel-concrete composite beams, prestressed steel-concrete composite beams have six major advantages： l） increasing the ultimate loading capacity; 2） extending the elastic range of structural behavior; 3） improving the fatigue and fracture behavior; 4） fully utilizing the materials and reducing the structural height and weight; 5） decreasing the deformation under service loading; 6） being helpful to the crack-width control. Based on the review of available research work of externally prestressed steel-concrete composite beams, the research projects to be conducted are proposed.
出处
《工程力学》
EI
CSCD
北大核心
2011年第A02期129-141,156,共14页
Engineering Mechanics
基金
国家自然科学基金项目(50438020)
清华大学自主科研计划资助项目(20101081766)
关键词
体外预应力
钢-混凝土组合梁
文献综述
研究现状评述
展望
externally prestressed
steel-concrete composite beams
review of available literatures
comments of current research work
projects to be studied
