用碳纤维加固桥梁的现场试验研究

Field Test Study on Bridges Bonded with Carbon Fibre Reinforced Plastic

既有桥梁由于各种原因需要加固 ,而碳纤维加固结构技术由于其施工便捷 ,且又不影响原结构的外观 ,加固效果又优于传统的结构加固技术 ,因此正被广泛应用于桥梁加固中 .对某桥梁加固前后的现场动静载试验数据进行了分析研究 ,发现桥梁经过碳纤维加固后 ,其承载能力与延性均得到了很大的增强 .

Due to various reasons,the existing bridges need to be reinforced.The method,gluing carbon fibre reinforced plastic(CFRP) to the surface of concrete,is recently widely used.Many models with twisted CFRP,which were produced in labs,were tested,and abundant data were gained.But as we know,it's different between the model test and the field test.This paper describes such a test that before and after the reinforcement a bridge was tested under dead load and dynamical load.Through theoretic analysis based on the data some conclusions are drewn.The great carry capacity and ductility improvement can be observed.