后张预应力孔道对桥梁横截面力学特性影响  

Study on Influences of Post-Tensioning Prestress Holes on Mechanical Characteristics of Bridge Cross-Section

作　　者：邢志明 邓雪涛[2] 曾德荣[2] 

机构地区：[1]中铁十七局,河北石家庄050016 [2]重庆交通大学,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2008年第B11期854-858,共5页Journal of Chongqing Jiaotong University(Natural Science)

摘　　要：从PC桥梁力学行为入手,通过数值分析的方法,分析PC桥在不同横向受力状态下箱梁截面应力分布的规律及受力特性,研究预应力孔道对PC桥梁截面受力特性的影响,从而为该类桥梁箱梁开裂等问题的对策研究提供理论依据。In terms of behavioral mechanics of PC bridge, the numerical analysis method is used to analyze the stress distribution rules and mechanical characteristics of box girder section of PC bridge under different horizontal forces. The influences of post-tensioning prestress holes on mechanical characteristics of bridge cross-section are also studied, which offers theoretic basis to study the cracking problems of box girder of this kind of bridge.

关 键 词：后张预应力 PC(预应力混凝土) 截面受力特性 数值分析 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]