武汉阳逻长江大桥主桥为主跨1280m悬索桥。北锚碇采用放坡大开挖深埋扩大基础实腹式锚体重力式锚;南锚碇采用支护开挖深埋圆形扩大基础框架式锚体重力式锚,其基坑工程采用外径73m、壁厚1.5m、深61.5m、最大挖深45m的圆形地下连续墙加内衬的支护结构型式;在国内首次研究应用了可换式预应力锚固系统。本文概述了锚碇设计总体构造、可换式预应力锚固系统研究及其设计技术特点。 Wuhan Yangluo Yangtze River Bridge main bridge span 1280m suspension bridge. North Anchorage with grading large excavation deep ground to expand the basic solid anchorage gravity anchor; South Anchorage deep excavation with a circular expansion of the base frame anchor gravity gravitropism, the excavation of the project using the outside Diameter of 73m, wall thickness of 1.5m, depth of 61.5m, maximum depth of 45m round underground continuous wall plus lining type of support structure; the first time in the country studied the application of the exchangeable prestressed anchoring system. This article summarizes the overall structure of the anchorage design, the exchangeable prestressed anchorage system and its design features.