高温作用下CFRP板加固多功能箱梁桥锚固方案分析  

The Anchor Scheme Analysis on CFRP Plate Reinforcing Multi-function Bridge in High Environmental Temperature

作　　者：袁鑫[1] 张继文[1] 宋守坛[1] 

机构地区：[1]东南大学土木工程学院,江苏南京210096

出　　处：《施工技术》2012年第12期19-22,共4页Construction Technology

基　　金：国家自然科学基金重点项目(50238030)

摘　　要：孟加拉邦戈邦都大桥在频繁的旱灾、热带气旋等多种气候灾害影响下,由于表面温度应力导致桥面层纵向开裂,初步设计对桥面裂缝灌注环氧树脂进行修复,然后在桥面横向粘贴碳纤维板约束纵向裂缝发展;对桥面进行找平,设置隔热和防水层后,铺设5cm厚的玛蹄脂沥青耐磨层。目前,在桥面板大面积粘贴CFRP板并铺设玛蹄脂沥青层,为了研究铺设玛蹄脂沥青层的高温作用对CFRP板加固多功能箱梁桥的效果,根据设计方案进行6种不同方案锚固试验,分析高温环境下CFRP板加固多功能箱梁桥的合理锚固方案。In the influence of various climate disasters, such as frequent drought and tropical cyclone, the surface temperature stress leads to longitudinal surface crack of Bangabandhu Bridge. The initial design was to fill the crack with grouting epoxy resin, then attach CFRP plate in transverse direction to restrain the further development of longitudinal crack. At last, the bridge deck was flattened, and covered with insulating layer, waterproof layer and 5era thick Matrix Asphalt （SMA）. It was the first time in the world that large area of CFRP plate was glued on bridge panel and then covered by the construction of matrix asphalt layer. In order to investigate the effect of high temperature during the application of asphalt layer to the CFRP reinforcement, six different anchor schemes were tested according to the design scheme to find out the reasonable anchorage scheme for CFRP plate strengthening muhi-function box girder bridge in high environmental temperature.

关 键 词：桥梁工程 箱梁桥 CFRP板 锚固方案 裂缝 

分 类 号：TU375.1[建筑科学—结构工程] U441[建筑科学—桥梁与隧道工程]