Clamping system for external prestressing single-end tensioning of concrete structure: Fid-Bau Portal

Clamping system for external prestressing single-end tensioning of concrete structure

DONG JIAYIN

The invention discloses a clamping system for external prestress single-end tensioning of a concrete structure. The clamping system comprises an anchoring clamp, a tensioning clamp and a connector for connecting the anchoring clamp and the tensioning clamp. The anchoring clamp comprises an anchoring bearing plate, an anchoring cover plate and an anchoring clamping plate; the anchoring cover plate covers the anchoring bearing plate to clamp one end of the steel fiber bundle; the tensioning clamp comprises a tensioning bearing plate, a tensioning cover plate, a tensioning clamping plate and a hanging belt, the tensioning cover plate covers the top face of the tensioning bearing plate so as to clamp the other end of the steel fiber bundle, and the hanging belt is annular and arranged on the periphery, close to the anchoring clamp, of the tensioning clamp in a sleeving mode so as to change the dip angle of the steel fiber bundle. The steel fiber bundle is arranged on the anchoring clamp in a penetrating mode from the tensioning clamp, the cover plate presses the steel fiber bundle on the bearing plate, the hanging belt provides clamping force at the end of the tensioning clamp to cover the inclination angle of the steel fiber bundle, and the tensioning equipment can conduct composite loading on the steel fiber bundle in a multi-angle and graded mode.

本发明公开了一种用于混凝土结构体外预应力单端张拉的夹持系统，包括锚固夹具、张拉夹具及连接锚固夹具和张拉夹具的连接器；锚固夹具包括锚固承载板、锚固盖板和锚固夹板；锚固盖板盖合锚固承载板以夹持钢纤维束的一端；张拉夹具包括张拉承载板、张拉盖板、张拉夹板和吊带，张拉盖板盖合张拉承载板的顶面以夹持钢纤维束的另一端，吊带呈环状并套设在张拉夹具靠近锚固夹具的外周以改变钢纤维束的倾角。本发明钢纤维束自张拉夹具穿设至锚固夹具，盖板将钢纤维束压紧在承载板上，吊带在张拉夹具的端部提供夹持力盖板钢纤维束的倾角，张拉设备可以多角度、分级的对钢纤维束进行复合加载。

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