体外预应力混凝土结构耐久性防护问题的探讨  

Study on durability of prestressed concrete structure with external tendons

作　　者：刘少兵[1] 

机构地区：[1]湖南省建筑工程集团总公司

出　　处：《铁道科学与工程学报》2007年第4期61-64,共4页Journal of Railway Science and Engineering

摘　　要：运用化学及结构振动原理,阐述了体外预应力筋腐蚀破坏机理,分析了体外预应力筋振动频率对梁正常使用的影响。在以上基础上,针对体外预应力混凝土结构在耐久性方面存在的问题,提出了体外预应力筋系统耐久性防护的技术措施。Based on the theories of chemistry and ahsking structure, the corrosion and damage mechanism of externally prestressed tendons was addressed and the impact of vibration frequency of externally prestressed tendons on normal use of concrete beams was analyzed. On this basis of analyses, the technological measures to prevent the erosion of externally prestressed tendons and to improve the durability of concrete were commented aiming at the problems with the durability of externally prestressed tendons.

关 键 词：预应力混凝土 体外预应力 耐久性 

分 类 号：TU528[建筑科学—建筑技术科学]