Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large-span whole-span dismantling method for prestressed continuous cast-in-place box girder
The invention belongs to the technical field of bridge demolition, and particularly relates to a large-span whole-span demolition method for a prestressed continuous cast-in-place box girder, which comprises the following steps of: 1, foundation treatment: lofting a steel pipe support position on an expanded foundation, leveling the foundation at a mounting position by using epoxy mortar, and ensuring that the horizontal position error is not greater than 1cm and the elevation error is not greater than 3mm; according to the large-span whole-span dismantling method for the prestressed continuous cast-in-place box girder, by arranging the fixing device, the cutting device can be stably fixed, after a drill bit is driven by a fixing sleeve to rotate and descend at the same time, box girders at the two ends of the box girder needing to be cut can be drilled, and after drilling is conducted to the set depth, through deflection of a pushing block, the cutting device is driven to rotate. When the drill bit rotates, the hole diameter of the position where the drill bit is located can be enlarged, the drill bit is fixed through opening of the pushing block, the drill bit cannot leave the formed hole, and the supporting frame is fixed to the ground or the surface of the box girder.
本发明属于桥梁拆除技术领域，尤其是一种预应力连续现浇箱梁大跨径整跨拆除方法，包括步骤一：地基处理：在扩大基础上对钢管支撑位置进行放样，用环氧砂浆将安装位置的基础找平，水平位置误差不大于1cm，标高误差不大于3mm。该预应力连续现浇箱梁大跨径整跨拆除方法，通过设置固定装置，能够对切割装置进行稳定的固定，通过固定套管带动钻头转动的同时进行下降后，能够对需要切割的箱梁两端的箱梁上进行钻孔，钻孔至设定的深度后，通过推动块的偏转，能够在钻头旋转时，扩大钻头所在位置的孔径，通过推动块的撑开对钻头进行固定，钻头无法离开开设的孔，将支撑架与地面或者箱梁的表面进行固定。
Large-span whole-span dismantling method for prestressed continuous cast-in-place box girder
The invention belongs to the technical field of bridge demolition, and particularly relates to a large-span whole-span demolition method for a prestressed continuous cast-in-place box girder, which comprises the following steps of: 1, foundation treatment: lofting a steel pipe support position on an expanded foundation, leveling the foundation at a mounting position by using epoxy mortar, and ensuring that the horizontal position error is not greater than 1cm and the elevation error is not greater than 3mm; according to the large-span whole-span dismantling method for the prestressed continuous cast-in-place box girder, by arranging the fixing device, the cutting device can be stably fixed, after a drill bit is driven by a fixing sleeve to rotate and descend at the same time, box girders at the two ends of the box girder needing to be cut can be drilled, and after drilling is conducted to the set depth, through deflection of a pushing block, the cutting device is driven to rotate. When the drill bit rotates, the hole diameter of the position where the drill bit is located can be enlarged, the drill bit is fixed through opening of the pushing block, the drill bit cannot leave the formed hole, and the supporting frame is fixed to the ground or the surface of the box girder.
本发明属于桥梁拆除技术领域，尤其是一种预应力连续现浇箱梁大跨径整跨拆除方法，包括步骤一：地基处理：在扩大基础上对钢管支撑位置进行放样，用环氧砂浆将安装位置的基础找平，水平位置误差不大于1cm，标高误差不大于3mm。该预应力连续现浇箱梁大跨径整跨拆除方法，通过设置固定装置，能够对切割装置进行稳定的固定，通过固定套管带动钻头转动的同时进行下降后，能够对需要切割的箱梁两端的箱梁上进行钻孔，钻孔至设定的深度后，通过推动块的偏转，能够在钻头旋转时，扩大钻头所在位置的孔径，通过推动块的撑开对钻头进行固定，钻头无法离开开设的孔，将支撑架与地面或者箱梁的表面进行固定。
Large-span whole-span dismantling method for prestressed continuous cast-in-place box girder
一种预应力连续现浇箱梁大跨径整跨拆除方法
WU SIFAN (Autor:in) / WANG XIAOLIANG (Autor:in) / YUN BO (Autor:in) / CHEN SHAOWEN (Autor:in) / ZHANG SHENGYOU (Autor:in) / LI LEI (Autor:in) / ZHANG SONG (Autor:in) / DU HAIFENG (Autor:in) / WANG LEI (Autor:in) / DING XIJIE (Autor:in)
03.01.2025
Patent
Elektronische Ressource
Chinesisch
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