Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Long-connected large-span steel box girder pushing method
The invention relates to a long-connected large-span steel box girder pushing method, and belongs to the technical field of bridge construction. The long-connected large-span steel box girder pushing method comprises the steps that the pushing line shape of a steel main girder is adjusted to be a sine curve through a lifting steel cushion block; and the steel main beam is synchronously pushed forwards through pushing devices installed on the tops of the buttresses till the steel main beam is pushed in place. According to the method, the steel main beam and the guide beam are pushed to the designed position together, the whole structure is always in the same-up and same-down mode in the pushing advancing process, displacement of any point on the steel beam is in the same-phase and sine-wave change state and becomes the self-adaptive process, according to the pushing method, in the pushing process, the padding workload is small, and the stress of the guide beam and the steel main beam is definite; according to the invention, the falling beam support and the steel main beam are uniformly stressed; it can be guaranteed that the falling beam support actively adapts to the bottom face of the steel main beam and the bottom face of the guide beam in the pushing process, and face-to-face contact stress is achieved.
本发明涉及一种长联大跨钢箱梁顶推方法，属于桥梁施工技术领域。所述长联大跨钢箱梁顶推方法包括：通过抄垫钢垫块将钢主梁顶推线形调整成正弦曲线；通过安装在各支墩顶上的顶推装置同步将钢主梁向前顶推，直至将钢主梁顶推到位。本发明中钢主梁和导梁一起被顶推至设计位置，整个结构在顶推行进过程中始终“同上同下”，钢梁上任何一点的位移都是同相位、正弦波的变化状态，成为自适应过程，此种顶推方法在顶推过程中抄垫工作量较少，导梁与钢主梁受力明确；本发明中落梁支撑与钢主梁受力均匀；本发明可保证落梁支撑在顶推过程中主动适应钢主梁底和导梁底面，实现“面对面”接触受力。
Long-connected large-span steel box girder pushing method
The invention relates to a long-connected large-span steel box girder pushing method, and belongs to the technical field of bridge construction. The long-connected large-span steel box girder pushing method comprises the steps that the pushing line shape of a steel main girder is adjusted to be a sine curve through a lifting steel cushion block; and the steel main beam is synchronously pushed forwards through pushing devices installed on the tops of the buttresses till the steel main beam is pushed in place. According to the method, the steel main beam and the guide beam are pushed to the designed position together, the whole structure is always in the same-up and same-down mode in the pushing advancing process, displacement of any point on the steel beam is in the same-phase and sine-wave change state and becomes the self-adaptive process, according to the pushing method, in the pushing process, the padding workload is small, and the stress of the guide beam and the steel main beam is definite; according to the invention, the falling beam support and the steel main beam are uniformly stressed; it can be guaranteed that the falling beam support actively adapts to the bottom face of the steel main beam and the bottom face of the guide beam in the pushing process, and face-to-face contact stress is achieved.
本发明涉及一种长联大跨钢箱梁顶推方法，属于桥梁施工技术领域。所述长联大跨钢箱梁顶推方法包括：通过抄垫钢垫块将钢主梁顶推线形调整成正弦曲线；通过安装在各支墩顶上的顶推装置同步将钢主梁向前顶推，直至将钢主梁顶推到位。本发明中钢主梁和导梁一起被顶推至设计位置，整个结构在顶推行进过程中始终“同上同下”，钢梁上任何一点的位移都是同相位、正弦波的变化状态，成为自适应过程，此种顶推方法在顶推过程中抄垫工作量较少，导梁与钢主梁受力明确；本发明中落梁支撑与钢主梁受力均匀；本发明可保证落梁支撑在顶推过程中主动适应钢主梁底和导梁底面，实现“面对面”接触受力。
Long-connected large-span steel box girder pushing method
一种长联大跨钢箱梁顶推方法
CHU MINHONG (Autor:in) / YANG WENSHUANG (Autor:in) / YAN HEZHONG (Autor:in) / LIU JUNFENG (Autor:in) / QUE SHUIJIE (Autor:in) / JIANG FAN (Autor:in) / WU KAI (Autor:in) / LIU XING (Autor:in) / FENG GUOYING (Autor:in) / YIN BIN (Autor:in)
03.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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