摘要
针对沙河大桥病害机理,对其加固设计方案加以介绍,认为有粘结预应力桥梁的加固方式既能起到增大截面尺寸的加固效果,又具有一般体外预应力提高承载能力的作用。同时,使用最新颁布的《桥梁加固设计规范》(JTG/TJ22-2008)对该加固方式进行的理论计算,可为桥梁的加固设计与计算提供有益的技术资料。
In allusion to Shahe Bridge disease mechanism, the reinforcement scheme is introduced. The bridge with bonding prestress can not only widen the cross-section dimension, but also increase bearing capacity like external prestress. Meanwhile, the newly promulgated Bridge Reinforcement and Design Norm （JTG/T J22-2008） is referred to calculate this method. It can provide technical material for reinforcement and calculation of bridges.
出处
《交通标准化》
2010年第1期68-71,共4页
Communications Standardization
关键词
T梁桥
后张有粘结
预应力
裂缝宽度
T beam bridge
post-tesnsioning with bond
prestress
crack width
