结构工程师2011，Vol.27Issue(z1)：272-275,4.
某办公楼预应力大梁裂缝成因分析与处理
Analysis of Pre-stressed Concrete Beam Crack and Treatment Measures
罗居刚 1崔德密 1张今阳2
作者信息
- 1. 安徽省淮委水利科学研究院,蚌埠,233000
- 2. 河海大学力学与材料学院,南京,210098
- 折叠
摘要
Abstract
Many through cracks have appeared on an office building pre-stressed beam after completion of tension. Through the field detection and recheck computation, cracks is mainly caused by pre-stressed reinforced configuration is overmuch, tension increase accordingly, concrete pressure zone height and longitudinal girder tensile steel reinforcement ratio is greater than the corresponding. Improperly measure processes of anchor end structural intensify the crack development. The cracks caused by stress are very harmful. A scheme for reinforce the beam by stickup CFRP to handle the cracks. The diagonal cracks at the beam end which width are wider than 0.30 mm should be reinforced by chemical grouting before stickup CFRP.关键词
预应力大梁/裂缝/成因分析/碳纤维Key words
pre-stressed beam/ crack/ course analysis/ carbon fiber reinforced plastic (CFRP)引用本文复制引用
罗居刚,崔德密,张今阳..某办公楼预应力大梁裂缝成因分析与处理[J].结构工程师,2011,27(z1):272-275,4.
