CFRP加固混凝土旧桥的影响因素  

Elementary Discussion on Influencing Factors of Carbon Fiber Reinforced Concrete Old Bridge

作　　者：舒彬[1] SHU Bin(Shaan ＇xi Institute of Railway Engineering Teehnology,Weinan Shaan＇xi 714000)

机构地区：[1]陕西铁路工程职业技术学院,陕西渭南714000

出　　处：《河南科技》2018年第19期116-118,共3页Henan Science and Technology

摘　　要：在梁外部黏贴CFRP（碳纤维）用于加固桥梁有很多优点，但CFRP片材线弹性模量较低，极限强度很高，需要通过变形才能发挥其高强度；而桥梁梁体由于配筋率、初应变等因素的影响使梁体受拉区变形受到限制。因此，采用外贴CFRP片材加固桥梁时法则存在加固效率下降的问题。There is a lot of advantage to use carbon fiber reinforced material to reinforce bridge. But the elastic modu- lus of this material is a little low, ultimate intensity is high; it must need much more strain to make best use of its in- tensity. But the strain of beam＇s tensile section has been limited after being reinforced for the influence of dosage of steel bars and early strain of beam. So the efficiency of making use of CFRP to reinforce bridge inevitable exists some questions need to solve.

关 键 词：线弹性模量 受压区高度 配筋率 初应变 

分 类 号：U448.35[建筑科学—桥梁与隧道工程]