多层预应力钢筋张拉装置及张拉方法

By using a multi-layer prestressed steel bar tensioning device and method, the complexity and high cost of multi-layer prestressed steel bar tensioning in pre-tensioning construction have been solved, achieving efficient and stable prestressed steel bar tensioning and reducing construction costs and time.

CN117774122BActive Publication Date: 2026-07-17THE THIRD CONSTRUCTION CO OF CCCC SECOND HARBOR ENGINEERING CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
THE THIRD CONSTRUCTION CO OF CCCC SECOND HARBOR ENGINEERING CO LTD
Filing Date
2024-01-23
Publication Date
2026-07-17

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Abstract

本发明公开了一种多层预应力钢筋张拉装置，包括张拉台座、预应力加载机构和固定机构，张拉台座的数根纵梁之间通过多根横梁连接，纵梁两端端头外分别设置垂直向下的端头抗倾覆墩，端头抗倾覆墩一端分别向上延伸出一组数个直角梯形墩台，加载机构和固定机构分别设置在直角梯形墩台外侧。各段预应力钢筋首尾端之间分别通过螺纹套固定连接成多根预应力钢筋连接体，预应力钢筋连接体两端分别通过精轧螺纹钢配套螺母紧固。方法包括1)组装多根预应力钢筋连接体并安装到张拉台座上，2)对多根预应力钢筋组合体依次按10％、105％保压5min、100％张拉负荷进行张拉。本发明可同时张拉多层预应力钢筋，显著提高了预应力钢筋的张拉功效。
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