摘要
碳纤维布加固预应力空心板是一种新型加固方法.为研究不同碳纤维黏贴量与黏贴方式对加固效果的影响,按工程实际尺寸设计制作了7块预应力混凝土空心板试件,进行了黏贴碳纤维布加固后,在近似均布荷载作用下抗弯承载力试验研究.结合现行碳纤维片材加固设计规程的不足,提出便于应用的抗弯承载力加固设计计算公式.结果表明:用碳纤维布加固预应力混凝土空心板,可以有效提高试件抗弯承载力;提出的计算公式计算值偏于安全,便于黏贴碳纤维布加固设计应用.
The use of carbon-fiber reinforced plastics （CFRPs） to strengthen pre-stressed, reinforced concrete （RC） hollow-core slab is a new structural reinforcement method. Seven actualdimension pre-stressed RC hollow-core slabs strengthened by CFRP were constructed and then tested under uniform load to analyze the effects of bonding mode and additive quantity. A feasible formula was presented for calculating the flexural capacity of pre-stressed RC hollow core slabs strengthened by CFRP. The results show that the flexural modulus of pre-stressed RC hollow core slabs strengthened by CFRP increase significantly. The calculated results are safer than the experimental ones, which suggest that the calculations are feasible for use in design.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2008年第2期250-254,共5页
Journal of China University of Mining & Technology
基金
教育部创新团队资助计划项目(IRT0518)
内蒙古自然科学基金项目(200208020211)
关键词
碳纤维布
预应力空心板
加固
抗弯承载力
CFRP
pre-stressed RC hollow core slab
strengthen
flexural capacity
