Reinforced concrete and prestressed inhaul cable coupled large-span beam: Fid-Bau Portal

Reinforced concrete and prestressed inhaul cable coupled large-span beam

HONG JIANQIANG / LIN SENHUA / FU HUANGCHUN / CAI YOUXIN / LAI SHAOLIN

The invention discloses a reinforced concrete and prestressed inhaul cable coupled large-span beam, and relates to the technical field of building construction, the reinforced concrete and prestressed inhaul cable coupled large-span beam comprises a concrete beam body and a prestressed inhaul cable, and the two ends of the prestressed inhaul cable are pre-buried and fixed to the two ends of the concrete beam body respectively; a movable pulley is arranged at one end of the concrete beam body; a tensioning connecting mechanism is connected between the movable pulley and the beam body and comprises a fixed block and a movable block, an adjusting bolt is connected between the movable block and the fixed block, the adjusting bolt is used for adjusting the distance between the movable block and the fixed block, the adjusting bolt is provided with a limiting piece, and the limiting piece is used for preventing the adjusting bolt from rotating around the axis of the adjusting bolt. The movable pulley is installed on a movable block used for being connected with a tensioning steel cable. The two ends of the prestressed inhaul cable are pre-buried and fixed to the concrete beam body, so that after the prestressed inhaul cable is tensioned, post-pouring operation of concrete does not need to be carried out, and the construction efficiency can be improved.

本申请公开了钢筋混凝土与预应力拉索耦合的大跨度梁，涉及建筑施工技术的领域，包括混凝土梁体和预应力拉索，预应力拉索的两端分别预埋固定于混凝土梁体的两端；混凝土梁体的一端设有动滑轮，预应力拉索饶过动滑轮；动滑轮与梁体之间连接有张拉连接机构，张拉连接机构包括固定块和活动块，活动块与固定块之间连接有调节螺栓，调节螺栓用于调节活动块与固定块之间的间距，调节螺栓设有限位件，限位件用于阻碍调节螺栓绕自身轴线旋转，动滑轮安装于活动块，活动块用于连接张拉钢索。本申请中预应力拉索的两端预埋固定于混凝土梁体，从而在预应力拉索张拉完成后，无需再进行混凝土的后浇作业，有利于提高施工效率。

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