双预应力混凝土结构施工工艺探讨  

Discussion on Construction Technology of Double Prestressed Concrete Structure

作　　者：张平杰[1] ZHANG Ping-jie(Hebei Provincial Communications Planning and Design Institute,Shijiazhuang 050011,China)

机构地区：[1]河北省交通规划设计院,石家庄市050011

出　　处：《北方交通》2018年第10期29-31,共3页Northern Communications

摘　　要：双预应力混凝土结构在拉压共同作用下,克服了混凝土抗压不抗拉的弱点,改善了混凝土的性能,可大幅降低梁高,减轻自重,可用于梁高受到限制的场合。阐述了双预应力混凝土结构的含义,介绍了这种结构的施工方法和施工工艺及施工注意事项。The weakness of compression resistance and no - tension of concrete is overcome, the performance of concrete is improved under the combined action of pulling and press of double prestressed concrete structure, which can greatly reduce the beam depth, and mitigate the selfweight. It can be used in the occasion that the beam depth is limited. The meaning of double prestressed concrete structure is elaborated, and the construction method and construction technology of this kind of structure as well as matters needing attention in the construction are introduced.

关 键 词：双预应力 混凝土结构 先压法 后压法 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]