折线先张预应力混凝土箱梁钢绞线弯起区应力分析研究  

STRESS ANALYSIS AND STUDY OF BENT STEEL STRAND OF BROKEN-LINE PRETENSION PRESTRESSED CONCRETE BOX BEAM

作　　者：徐小珊[1] 

机构地区：[1]重庆工程职业技术学院,重庆402260

出　　处：《建筑技术》2016年第12期1083-1085,共3页Architecture Technology

摘　　要：折线先张预应力混凝土箱梁在弯起区和锚固区的受力性能较复杂,易出现混凝土开裂等现象。通过介绍折线先张预应力混凝土箱梁的施工工艺,并对弯起区的复杂应力状态进行分析,指出折线先张预应力混凝土箱梁的施工注意事项,可为实际工程施工提供理论指导。The bending and anchorage areas of broken-line pretension prestressed concrete box beam have complex stressing conditions and concrete cracking often happens. This paper introduced the construction process of pretension prestressed concrete box beam, analyzed the complex stressing conditions at bending area and described the key points in construction. Theoretical references were provided for practical construction.

关 键 词：折线先张预应力混凝土箱梁 弯起区 应力分析 

分 类 号：TU511.3[建筑科学—建筑技术科学]