本文主要对墩柱桩基病害较严重且受力较大的或容易受到漂流物撞击的外排桩基采用传统方法加固,即采用外包钢护、灌注水下混凝土增大桩基截面作为加固方案。对墩柱内部作业空间较小的桩基采用水下玻纤套筒加固法,该方法选用高强度的环氧灌浆料和高强防腐蚀玻纤套筒进行加固。 In this paper, the main method is to reinforce the outer pile foundations whose pier foundation is more serious and under strong stress or vulnerable to drift collision, that is, to use the outer steel sheath to infuse underwater concrete to reinforce the pile foundation section as reinforcement Program. For the pile foundation with small working space inside the pier, underwater fiberglass sleeve reinforcement method is adopted. This method uses high-strength epoxy grouting material and high-strength anti-corrosion fiberglass sleeve to reinforce it.