预应力混凝土空心板桥横向体外预应力加固方法  

Lateral external prestressed strengthening method of the prestressed concrete hollow slab bridge

作　　者：张雷 

机构地区：[1]吉林省交通规划设计院,吉林长春130021

出　　处：《内蒙古公路与运输》2015年第6期13-15,共3页Highways & Transportation in Inner Mongolia

摘　　要：针对预应力混凝土空心板梁桥存在的病害,采用施加横向体外预应力筋进行加固。以某装配式空心板梁桥为背景,建立板梁桥加固前、后三维空间有限元模型。通过分析桥梁跨中截面铰缝处混凝土应力值证明采用横向预应力筋加固板梁桥效果显著。Aiming at the existence damages of prestressed concrete hollow slab bridge,by applying the lateral external prestressed tendons for reinforcement. Taking a prefabricated slabs bridge as the background,established the three dimensional space finite element model of plate girder bridge before and after reinforcement. Through the analysis of concrete stress value in the bridge cross section hinge joints to prove that the effect of using transverse prestressed tendon to reinforce plate girder bridges is obvious.

关 键 词：装配式空心板桥 横向体外预应力 加固 

分 类 号：U448.35[建筑科学—桥梁与隧道工程]