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JT/T329-2025公路桥梁预应力钢绞线用锚具夹具和连接器2025年7月1日实施

Source:  Time:2025/5/12 13:59:07  Hits:20
    JT/T329-2025公路桥梁预应力钢绞线用锚具夹具和连接器2025年7月1日实施。替代JT/T329-2010。 JT/T329-2025规定了公路桥梁预应力钢绞线用锚具、夹具和连接器的分类、型号、结构形式与规格、技术要求、试验方法、检验规则,以及标志、包装、运输和储存等要求。本标准适用于公路桥梁预应力混凝土结构用公称直径15.2mm钢绞线的锚具、夹具和连接器的生产、检验和使用。JT/T329-2025不适用于拉索和吊索。
    1000T微机控制钢绞线静载锚固试验机,测定预应力钢绞线锚具夹具连接器静载锚固性能,锚具及连接器效率系数ηa(%)、夹具效率系数ηg(%)、组装件达到实测极限拉力时预应力筋受力长度总伸长率εTu(%)。总伸长率εTu(%)自动测量装置;钢绞线内缩量自动测量装置,自动采集处理钢绞线内缩量试验。钢绞线-锚具组装件在静载试验中破断时最大拉力(实测极限拉力Fapu)。钢绞线-夹具组装件在静载试验中破断时最大拉力(实测极限拉力Fgpu)。
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