【摘要】 针对1座高速公路旧桥拆除的35 m预应力混凝土T型梁开展组合粘贴纤维增强复材(HBFRP)加固施工,并总结了施工过程中各项技术控制要点。基于加固后桥梁开展破坏性荷载试验,结果表明:荷载-位移曲线呈线性双折线变化,线性拟合得到跨中部位两阶段荷载-挠度关系; HB-FRP板参与全过程抗弯,未发生黏结滑移破坏。更多还原

【Abstract】 The 35 m prestressed concrete T-beam removed from the old bridge of a highway was constructed with HBFRP reinforcement,and the technical control points during the construction process were summarized. Based on the destructive load test of the bridge after reinforcement,the test results show that the load-displacement curve shows a linear double-fold line change,and the linear fitting results in the load-deflection relationship of the mid-span; the HB-FRP plate does not have the bond-slip damage,and participates in the whole process. Resistance to bending.更多还原