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五、用钢筋混凝土箍套加固墩台及基础对因受冲刷磨损或变形侧移、或施工质量不好等产生病害的桥梁墩台(例51—53)或桩基(例54、55),沿墩、台身或桩周加浇钢筋混凝土箍套或圈梁的方法加固(见图13),有一定效果,箍套或圈梁藉助钢筋与墩台身或桩基连结,为加强整体性,也有在圈梁间加设钢筋混凝土支撑的作法(例52)。例51 湖南省祁阳县群力桥 3×8m、矢度1/5片石轻台拱桥,奠基岩层,1976年建成、通车后不久,两台自起拱线以下0.8m台身向后水平位移2cm,台身满布纵横裂纹;两中墩在起拱线以下1m范围内
Fifth, reinforced concrete pier with pier and the basis of the pier due to the erosion of the wear or deformation of the lateral displacement, or poor quality of the bridge pier or other diseases (Example 51-53) or pile (54,55), Reinforced concrete ferrule or ring beam along the abutment, abutment or pile circumference (see Figure 13), with some effect, the ferrule or ring beam by means of steel and piers abutment or pile foundation link, in order to enhance the integrity There is also the practice of adding reinforced concrete supports between the ring beams (Example 52). Example 51 Qili County, Hunan Province Qunli Bridge 3 × 8m, 1 / 5th stone angle light arch bridge, foundation rock formation, completed in 1976, opened to traffic soon after, two self-arch lines below the 0.8m bench body horizontal displacement of 2cm backward , Covered with vertical and horizontal cracks; two pier in the arch line below the 1m range