空心板梁桥增设斜拉筋和填充混凝土抗剪加固新方法  

A Novel Method for Shear Strengthening of Hollow Slab Beam Bridge by Adding Diagonally Reinforcement and Filling Concrete

作　　者：刘君奎 王志祥 邵国新 LIU Jun-kui;WANG Zhi-xiang;SHAO Guo-xin

机构地区：[1]赤峰市高等级公路保障中心,内蒙古赤峰024000

出　　处：《内蒙古公路与运输》2020年第3期6-8,共3页Highways & Transportation in Inner Mongolia

摘　　要：提出一种通过增设斜拉筋和采用混凝土填充空心板挖空部分进行抗剪加固的新方法,在对原桥结构抗剪承载力进行检算的基础上,分析可提高抗剪承载能力的加固措施后,设计了空心板抗剪加固的具体技术方案。然后,分别采用理论计算分析和荷载试验方法对加固效果进行分析,结果表明,增加斜拉筋和填充混凝土的加固方法可有效地提高空心板抗剪承载力,实现加固设计的目标。A novel method of shear strengthening by adding diagonally reinforcement and using a hollow slab filled with concrete wad is proposed in this paper. Based on the calculation of the shear bearing capacity of the original bridge structure,and the analysis of technical means to improve the shear capacity,the specific technical means for shear strengthening of the hollow slab have been designed. Then,the reinforcement effect is analyzed by theoretical calculation and load test. The results show that the shear capacity of the hollow slab can be effectively improved by adding the diagonal reinforcement and filling concrete,and the goal of reinforcement design is achieved.

关 键 词：桥梁工程 空心板 承载能力 抗剪 加固 

分 类 号：U411[交通运输工程—道路与铁道工程]