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预应力混凝土圆形构筑物,在环状预应力钢筋张拉施工中,通常采用绕丝机或电热张拉法。这两种施工工艺,前者设备庞大、工艺复杂;后者耗电能较多,施工不便。均不受施工单位欢迎。近几年来,南京市第三建筑公司、江苏省建筑科学研究所、南京市设计院、南京市自来水公司四个单位合作,在圆形水池壁预应力钢筋张拉施工中,研究、设计了分段切向(沿圆筒切线方向)张拉,并以径向(沿圆筒直径方向)补张的新工艺。该工
For pre-stressed concrete circular structures, wire-wrapping machines or electro-thermal stretching methods are commonly used in the tensioned construction of annular prestressed steel bars. The two construction processes, the former equipment is huge, the process is complicated; the latter consumes more energy, and the construction is inconvenient. Not welcomed by the construction unit. In recent years, Nanjing No. 3 Construction Co., Ltd., Jiangsu Institute of Building Research, Nanjing Design Institute, and Nanjing Water Supply Co., Ltd. have cooperated to study and design points in the construction of pre-stressed steel bars for round pool walls. Section tangentially (along the direction of the cylinder tangential line), and a new process of radial expansion (in the direction of the diameter of the cylinder). The worker