A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a prestressed anchorage device for highway bridge construction, and belongs to the field of concrete construction. The prestressed anchorage device for highway bridge construction comprises an anchor bearing plate, an anchor plate and a protective tightening mechanism, the protective tightening mechanism comprises a fastening ring, four supports, two first guide rods, two first sliding blocks, two second guide rods, a second sliding block, a screw and a nut, and the two ends of the two first guide rods are fixedly connected to the upper ends of the supports correspondingly; the two first sliding blocks penetrate through the two first guide rods in a sliding mode respectively, the second sliding blocks penetrate through the two second guide rods in a sliding mode respectively, the screw rod penetrates through the second sliding blocks in a threaded mode, the screw rod is arranged between the two second guide rods, a magnetic layer is arranged at the lower end of the screw rod, the nut is magnetically attracted to the lower end of the screw rod. According to the device, the clamping pieces can be clamped for the second time, and the situation that the tensioning degree of a steel strand is reduced due to the fact that the head of the steel strand is scattered is avoided.
本发明提供了一种公路桥梁施工用预应力锚具，属于混凝土施工领域。该公路桥梁施工用预应力锚具包括锚垫板、锚板和防护加紧机构，所述防护加紧机构包括紧固圈、四个支架、两根第一导杆、两个第一滑块、两根第二导杆、第二滑块、螺杆和螺帽，两根所述第一导杆两端分别固定连接于所述支架上端，两个所述第一滑块分别滑动贯穿于两根所述第一导杆，所述第二滑块分别滑动贯穿于两根所述第二导杆，所述螺杆螺纹贯穿于所述第二滑块，所述螺杆设置在两根所述第二导杆之间，所述螺杆下端设置有磁层，所述螺帽磁吸于所述螺杆下端，本发明可以二次加紧夹片，并避免因钢绞线头散开降低钢绞线的张紧度。
The invention provides a prestressed anchorage device for highway bridge construction, and belongs to the field of concrete construction. The prestressed anchorage device for highway bridge construction comprises an anchor bearing plate, an anchor plate and a protective tightening mechanism, the protective tightening mechanism comprises a fastening ring, four supports, two first guide rods, two first sliding blocks, two second guide rods, a second sliding block, a screw and a nut, and the two ends of the two first guide rods are fixedly connected to the upper ends of the supports correspondingly; the two first sliding blocks penetrate through the two first guide rods in a sliding mode respectively, the second sliding blocks penetrate through the two second guide rods in a sliding mode respectively, the screw rod penetrates through the second sliding blocks in a threaded mode, the screw rod is arranged between the two second guide rods, a magnetic layer is arranged at the lower end of the screw rod, the nut is magnetically attracted to the lower end of the screw rod. According to the device, the clamping pieces can be clamped for the second time, and the situation that the tensioning degree of a steel strand is reduced due to the fact that the head of the steel strand is scattered is avoided.
本发明提供了一种公路桥梁施工用预应力锚具，属于混凝土施工领域。该公路桥梁施工用预应力锚具包括锚垫板、锚板和防护加紧机构，所述防护加紧机构包括紧固圈、四个支架、两根第一导杆、两个第一滑块、两根第二导杆、第二滑块、螺杆和螺帽，两根所述第一导杆两端分别固定连接于所述支架上端，两个所述第一滑块分别滑动贯穿于两根所述第一导杆，所述第二滑块分别滑动贯穿于两根所述第二导杆，所述螺杆螺纹贯穿于所述第二滑块，所述螺杆设置在两根所述第二导杆之间，所述螺杆下端设置有磁层，所述螺帽磁吸于所述螺杆下端，本发明可以二次加紧夹片，并避免因钢绞线头散开降低钢绞线的张紧度。
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