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在预应力混凝土工程中,采用高强钢丝束来代替Ⅱ～Ⅳ级粗钢筋作预应力筋,可节约钢材、简化施工工序和降低工程成本。但高强钢丝束易产生滑丝、断丝现象,这不仅影响预应力值的建立,且进行处理也较困难,将严重影响施工进度和安全。引起滑丝、断丝的原因,在很大程度上取决于锚具锚固的可靠性。因此,在施工中必须针对锚具的性能,采取有效的措施,尽量予以避免。由于钢质锥形锚具使用较广,常用于锚固12～24根φ~S5高强钢丝束。所以,本文仅就钢质锥
In prestressed concrete works, high-strength steel wire bundles are used instead of grade II-IV coarse steel bars as pre-stressed bars, which can save steel, simplify construction processes and reduce project costs. However, high-strength steel wire bundles are prone to slip wire and broken wires. This not only affects the establishment of prestressed values, but also makes it difficult to handle them, which will seriously affect the construction progress and safety. The causes of slipping and broken threads depend to a large extent on the reliability of the anchorage of the anchorage. Therefore, effective measures must be taken for the performance of anchorages during construction and avoided as much as possible. Due to the wide use of steel cone anchors, it is often used to anchor 12~24 φ~S5 high-strength steel wire bundles. So, this article only on steel cone