Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Midspan closure method of large-span composite beam cable-stayed bridge
The invention discloses a mid-span closure method of a large-span composite beam cable-stayed bridge, which comprises the following steps of: manufacturing mid-span closure section steel beams and connecting pieces thereof, moving a crane to the positions of hoisting side span closure sections and mid-span closure sections, determining the matching and cutting amount and adjusting parameters, cutting and drilling according to the matching and cutting amount and the adjusting parameters, and converting temporary constraint into a pushing device. All steel members of a midspan closure section are arranged at the cantilever end of the erected beam section in advance, members for placing beams are welded to side box girders, the geometric posture of a midspan closure opening is evaluated and adjusted, a pushing device is locked after pushing is in place, the side box girders are installed, the posture of the midspan closure opening is adjusted again, the pushing device is locked after back-pushing is in place, and splicing construction is conducted. Installing the cross beams and the small longitudinal beams, and constructing the bridge deck slab, namely completing the midspan closure operation. The construction precision problem is comprehensively considered, adverse effects are eliminated as far as possible, and the closure speed and precision are improved.
本发明公开的一种大跨度组合梁斜拉桥的中跨合龙方法，包括制造中跨合龙段钢梁及其连接件，将吊机移至吊装边跨合龙段、中跨合龙段的位置，确定配切量和调整参数，并根据配切量和调整参数进行切割和钻孔，临时约束转换成顶推装置，将中跨合龙段的所有钢构件提前置于已架设梁段的悬臂端，并在边箱梁上焊接搁梁用构件，评估并调整中跨合龙口几何姿态，顶推到位后锁定顶推装置，边箱梁的安装，再次调整中跨合龙口姿态，回顶到位后锁定顶推装置，拼接施工，安装横梁和小纵梁，桥面板施工，即中跨合龙作业完成。本发明全方位考虑施工精度问题，尽可能消除不利影响，提高了合龙速度与精度。
Midspan closure method of large-span composite beam cable-stayed bridge
The invention discloses a mid-span closure method of a large-span composite beam cable-stayed bridge, which comprises the following steps of: manufacturing mid-span closure section steel beams and connecting pieces thereof, moving a crane to the positions of hoisting side span closure sections and mid-span closure sections, determining the matching and cutting amount and adjusting parameters, cutting and drilling according to the matching and cutting amount and the adjusting parameters, and converting temporary constraint into a pushing device. All steel members of a midspan closure section are arranged at the cantilever end of the erected beam section in advance, members for placing beams are welded to side box girders, the geometric posture of a midspan closure opening is evaluated and adjusted, a pushing device is locked after pushing is in place, the side box girders are installed, the posture of the midspan closure opening is adjusted again, the pushing device is locked after back-pushing is in place, and splicing construction is conducted. Installing the cross beams and the small longitudinal beams, and constructing the bridge deck slab, namely completing the midspan closure operation. The construction precision problem is comprehensively considered, adverse effects are eliminated as far as possible, and the closure speed and precision are improved.
本发明公开的一种大跨度组合梁斜拉桥的中跨合龙方法，包括制造中跨合龙段钢梁及其连接件，将吊机移至吊装边跨合龙段、中跨合龙段的位置，确定配切量和调整参数，并根据配切量和调整参数进行切割和钻孔，临时约束转换成顶推装置，将中跨合龙段的所有钢构件提前置于已架设梁段的悬臂端，并在边箱梁上焊接搁梁用构件，评估并调整中跨合龙口几何姿态，顶推到位后锁定顶推装置，边箱梁的安装，再次调整中跨合龙口姿态，回顶到位后锁定顶推装置，拼接施工，安装横梁和小纵梁，桥面板施工，即中跨合龙作业完成。本发明全方位考虑施工精度问题，尽可能消除不利影响，提高了合龙速度与精度。
Midspan closure method of large-span composite beam cable-stayed bridge
一种大跨度组合梁斜拉桥的中跨合龙方法
CHEN CHANGSONG (Autor:in) / YAN DONGHUANG (Autor:in) / LING LIHUA (Autor:in) / HUANG GEN (Autor:in) / SHE QINCONG (Autor:in) / DONG ZIHAN (Autor:in) / WANG JING (Autor:in) / FU YAJUN (Autor:in) / WU JUNJIE (Autor:in)
15.07.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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