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钢丝束镦头锚具是利用钢丝两端的镦粗头来锚固预应力钢丝的一种支承式锚具。这种锚具加工简单、张拉方便、锚固可靠、成本低廉,还可节约两端伸出的预应力钢丝,但对钢丝束等长下料要求较严。这种锚具可根据张拉吨位和使用条件设计成多种形式和规格,能锚固任意根数的5至7钢丝,适应面广。钢丝束镦头锚具是1949年由瑞士四个工程师首创的,国际上就以他们名字的头一个字母取名为BBRV体系。目前这种锚固体系已在国外普遍采用。我国自1966年同济大学公路研究所首次将这种锚具用于桥梁以后,已逐步推广到水工建筑、房屋建筑和特
The steel wire bundle anchor is a kind of supporting anchorage that anchors the prestressed steel wire with the upset head at both ends of the wire. The anchoring tool has the advantages of simple processing, convenient tensioning, reliable anchorage, and low cost, and can also save prestressed steel wires protruding at both ends, but strict requirements are imposed on the equal length of the wire bundles. This kind of anchorage can be designed into various forms and specifications according to the tension tonnage and the conditions of use. It can anchor any number of 5 to 7 steel wires and can be widely used. Steel wire bun anchors were first created by four Swiss engineers in 1949, and internationally they named the BBRV system with the first letter of their name. At present, this kind of anchor system has been widely used abroad. Since China’s 1989 Institute of Highway Research at Tongji University used this type of anchor for bridges for the first time, it has been gradually extended to hydraulic construction, housing construction and special