高桩码头纵梁维修加固方法及对比

20世纪70～80年代修建的高桩码头由于长期处于氯盐侵蚀的环境中,码头浪溅区梁板钢筋容易发生锈蚀膨胀,进而引起混凝土纵向开裂、脱落。为保证码头结构安全需要对此类型的梁进行维修加固,基于实际码头维修加固工程对加大梁截面和粘贴碳纤维布两种维修加固方法进行介绍,从应用范围、施工效率、质量及成本4个方面对两种方法进行对比分析。结果表明,加大截面法比粘贴碳纤维布法的适用范围更广泛,但在施工效率、成本、施工难易及质量可控性等方面,粘贴碳纤维布法具有明显优势。

Maintenance and reinforcement methods for longitudinal beam of high pile wharf and comparative analysis

The high pile wharf built in 1970s and 1980s is easy to rust and expand of beam slab reinforcement in splash area due to the long-term chloride corrosion environment,which leads to the longitudinal cracking and falling off of concrete.In order to ensure the safety of the wharf structure,this type of beam needs to be repaired and reinforced.Based on the actual wharf repair and reinforcement project,we introduce two kinds of repair and reinforcement methods including enlarging beam section and pasting carbon fiber cloth,and carry out the comparative analysis of the two methods from four aspects of application scope,construction efficiency,quality and cost.The results show that enlarging section method is more suitable than pasting carbon fiber cloth method,but pasting carbon fiber cloth method has obvious advantages in construction efficiency,cost,construction difficulty and quality controllability.