Pre-tensioning method prestress anti-floating anchor rod

The invention relates to the technical field of anti-floating anchor rods, in particular to a pre-tensioning method prestress anti-floating anchor rod which comprises a prestress steel strand, a strand tensioning anchorage device, a first steel base plate, a concrete cushion layer, a fixing support and a second steel base plate. First steel grouting sleeves are arranged in the fixing support and the prefabricated part, prestressed steel strands are arranged in the first steel grouting sleeves, a concrete cushion layer is arranged on the outer walls of the prestressed steel strands, and a first spiral bar and a second spiral bar are arranged on the outer walls of the two sides of the concrete cushion layer correspondingly. And a second steel base plate is arranged at the lower end in the first steel grouting sleeve. The invention also discloses a method. 本发明涉及抗浮锚杆技术领域，具体为一种先张法预应力抗浮锚杆，包括预应力钢绞线、绞线张拉锚具、第一钢垫板、混凝土垫层、固定支架和第二钢垫板，所述固定支架内壁安装有等距平行分布的预制部分，所述固定支架和预制部分内部均设置有第一钢制注浆套管，所述第一钢制注浆套管内部设置有预应力钢绞线，所述预应力钢绞线外壁设置有混凝土垫层