环形后张预应力体系 (简称环锚 )是一种新型后张预应力技术。宁夏石咀山市大武口区污水处理厂的 2座圆形沉淀池 ,内径 35ｍ ,沿竖壁设置 3排锚具槽 ,用来安装环锚 ,无粘结筋分 3段锚固 ,一次同步张拉。其张拉端和锚固端同在一块锚板上 ,锚板可以移动 ,不直接与池壁接触。该环锚 Ring-shaped post-tensioned prestressed system (referred to as ring anchor) is a new post-tensioned prestressed technology. Two round sedimentation tanks of the Taiwukou District Sewage Treatment Plant in Shizuishan City of Ningxia with an inner diameter of 35m and three rows of anchorage grooves along the vertical wall for installing ring anchors without anchoring ribs in three sections of anchorage and one time synchronization Pull. Its tensioned end and anchorage end are on the same anchor plate, and the anchor plate can be moved without direct contact with the pool wall. The ring anchor