A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Opposite clamping type prestressed cable-stayed foundation
The invention discloses an opposite clamping type prestressed cable-stayed foundation which comprises a lower anchor plate in a deep foundation pit, an upper anchor plate in a shallow foundation pit and finish-rolled deformed steel bars connected with the upper anchor plate and the lower anchor plate, wherein the finish-rolled deformed steel bars penetrating through inclined holes of the upper anchor plate and the lower anchor plate are tensioned through prestressed nuts, cement slurry is poured through a reserved grouting pipe until the cement slurry overflows from the top, and the grouting pipe is extracted. The parts, such as the prestressed nuts and the finish-rolled deformed steel bars at the upper and lower anchor plates, which are not wrapped by cement slurry are coated with asphaltfor anti-corrosion treatment, and the foundation pits of the upper and lower anchor plates are backfilled and compacted. The technical problems in the prior art that construction is high in cost anduneconomical, safety is poor, the construction quality cannot be guaranteed, and the reliability is poor are solved.
本发明公开了一种对夹式预应力斜拉基础，包括深基坑内下锚板，浅基坑内上锚板和与其相连的精轧螺纹钢，先通过预应力螺母将穿过上、下锚板斜孔的精轧螺纹钢张紧，再通过预留的灌浆管灌注水泥浆直至水泥浆从顶部溢出，将注浆管抽出。上、下锚板处的预应力螺母、精轧螺纹钢等未被水泥浆包裹部分采用沥青做防腐处理。回填上、下锚板的基坑并压实。本发明解决了现有技术中施工成本高、不经济，安全性差以及施工质量不能保证、可靠性差的技术问题。
Opposite clamping type prestressed cable-stayed foundation
The invention discloses an opposite clamping type prestressed cable-stayed foundation which comprises a lower anchor plate in a deep foundation pit, an upper anchor plate in a shallow foundation pit and finish-rolled deformed steel bars connected with the upper anchor plate and the lower anchor plate, wherein the finish-rolled deformed steel bars penetrating through inclined holes of the upper anchor plate and the lower anchor plate are tensioned through prestressed nuts, cement slurry is poured through a reserved grouting pipe until the cement slurry overflows from the top, and the grouting pipe is extracted. The parts, such as the prestressed nuts and the finish-rolled deformed steel bars at the upper and lower anchor plates, which are not wrapped by cement slurry are coated with asphaltfor anti-corrosion treatment, and the foundation pits of the upper and lower anchor plates are backfilled and compacted. The technical problems in the prior art that construction is high in cost anduneconomical, safety is poor, the construction quality cannot be guaranteed, and the reliability is poor are solved.
本发明公开了一种对夹式预应力斜拉基础，包括深基坑内下锚板，浅基坑内上锚板和与其相连的精轧螺纹钢，先通过预应力螺母将穿过上、下锚板斜孔的精轧螺纹钢张紧，再通过预留的灌浆管灌注水泥浆直至水泥浆从顶部溢出，将注浆管抽出。上、下锚板处的预应力螺母、精轧螺纹钢等未被水泥浆包裹部分采用沥青做防腐处理。回填上、下锚板的基坑并压实。本发明解决了现有技术中施工成本高、不经济，安全性差以及施工质量不能保证、可靠性差的技术问题。
Opposite clamping type prestressed cable-stayed foundation
一种对夹式预应力斜拉基础
HE CHUNTAO (author) / PAN ZHEFENG (author)
2020-06-26
Patent
Electronic Resource
Chinese
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