Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Tensioning method and tensioning structure for prestressed steel beam of bridge tower cross beam
The invention relates to a method and a structure for tensioning a prestressed steel beam of a bridge tower cross beam. At present, when a prestressed steel beam of a bridge tower cross beam is tensioned, common steel bars which interfere with the prestressed steel beam need to be cut off. The structure comprises a working anchor plate and a limiting plate, the working anchor plate is cylindrical, and first steel bundle holes which are axially through are formed in the working anchor plate and are symmetrically formed along the two sides of the diameter of the working anchor plate; the limiting plate is cylindrical, an axially through second steel bundle hole is formed in the limiting plate, the limiting plate is located on the outer side of the working anchor plate and is coaxially arranged, and the second steel bundle hole corresponds to the first steel bundle hole; the limiting plate is further provided with a radial steel bar groove, and the steel bar groove is located between the second steel beam holes symmetrically formed in the two sides. By means of the special prestressed steel beam arrangement mode and the new working anchor plate and limiting plate structure, when the prestressed steel beams are tensioned, common steel bars can penetrate through the prestressed steel beams, mutual interference is avoided, and tensioning of the prestressed steel beams is completed under the condition that the common steel bars are not cut off.
本发明涉及一种桥塔横梁预应力钢束张拉方法及张拉结构。目前桥塔横梁预应力钢束张拉时需要截断与预应力钢束相干扰的普通钢筋。本结构包括工作锚板和限位板；工作锚板为圆柱形，其上布置有轴向贯通的第一钢束孔，第一钢束孔沿工作锚板的直径两侧对称布置；限位板为圆柱形，其上布置有轴向贯通的第二钢束孔，限位板位于工作锚板的外侧并同轴布置，第二钢束孔与第一钢束孔相互对应；限位板上还设置有径向的钢筋槽，钢筋槽位于两侧对称布置的第二钢束孔之间。本发明通过特殊的预应力钢束布置方式，以及新的工作锚板、限位板构造，使得预应力钢束张拉时，普通钢筋能够穿过预应力钢束，避免互相干扰，在不截断普通钢筋的情况下，完成预应力钢束的张拉。
Tensioning method and tensioning structure for prestressed steel beam of bridge tower cross beam
The invention relates to a method and a structure for tensioning a prestressed steel beam of a bridge tower cross beam. At present, when a prestressed steel beam of a bridge tower cross beam is tensioned, common steel bars which interfere with the prestressed steel beam need to be cut off. The structure comprises a working anchor plate and a limiting plate, the working anchor plate is cylindrical, and first steel bundle holes which are axially through are formed in the working anchor plate and are symmetrically formed along the two sides of the diameter of the working anchor plate; the limiting plate is cylindrical, an axially through second steel bundle hole is formed in the limiting plate, the limiting plate is located on the outer side of the working anchor plate and is coaxially arranged, and the second steel bundle hole corresponds to the first steel bundle hole; the limiting plate is further provided with a radial steel bar groove, and the steel bar groove is located between the second steel beam holes symmetrically formed in the two sides. By means of the special prestressed steel beam arrangement mode and the new working anchor plate and limiting plate structure, when the prestressed steel beams are tensioned, common steel bars can penetrate through the prestressed steel beams, mutual interference is avoided, and tensioning of the prestressed steel beams is completed under the condition that the common steel bars are not cut off.
本发明涉及一种桥塔横梁预应力钢束张拉方法及张拉结构。目前桥塔横梁预应力钢束张拉时需要截断与预应力钢束相干扰的普通钢筋。本结构包括工作锚板和限位板；工作锚板为圆柱形，其上布置有轴向贯通的第一钢束孔，第一钢束孔沿工作锚板的直径两侧对称布置；限位板为圆柱形，其上布置有轴向贯通的第二钢束孔，限位板位于工作锚板的外侧并同轴布置，第二钢束孔与第一钢束孔相互对应；限位板上还设置有径向的钢筋槽，钢筋槽位于两侧对称布置的第二钢束孔之间。本发明通过特殊的预应力钢束布置方式，以及新的工作锚板、限位板构造，使得预应力钢束张拉时，普通钢筋能够穿过预应力钢束，避免互相干扰，在不截断普通钢筋的情况下，完成预应力钢束的张拉。
Tensioning method and tensioning structure for prestressed steel beam of bridge tower cross beam
桥塔横梁预应力钢束张拉方法及张拉结构
FANG SHUAIPING (Autor:in) / LI WEI (Autor:in) / KANG WEI (Autor:in) / LUO YONG (Autor:in) / FENG YACHENG (Autor:in)
22.03.2024
Patent
Elektronische Ressource
Chinesisch
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