预应力锚夹具随着预应力技十的发展而发展。在六十年代,世界上主要的锚夹具约有四十几种,而且有些还是相互类同的。七十年代的发展趋势,要求锚夹具能锚固或夹持更硬的预应力钢材和能适应多种预应力工艺的要求。除单根、成束锚固外,还出现了集束式群锚锚头。有些锚具业已系列化、商品化。我国在五十年代初期,开始研究并初步应 Prestressed anchor fixtures have evolved with the development of prestressing techniques. In the 1960s, there were about 40 kinds of anchor clamps in the world, and some were similar to each other. The development trend of the 1970s required that the anchor fixtures could anchor or hold harder prestressed steel and could adapt to the requirements of various prestressing processes. In addition to single roots, bundle anchors, cluster anchor anchors also appeared. Some anchors have been serialized and commercialized. In the early 1950s, China began to study and initially