Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pushing installation method for high-pier large-span support-free steel box girder in mountainous area
The invention relates to a mountainous area high-pier large-span support-free steel box girder pushing installation method, which is characterized in that two rows of water tanks are respectively arranged on two sides of the top surface of a steel box girder along the longitudinal direction, each row of water tanks comprises a plurality of independent water tanks, and each water tank adopts an independent water injection pipe and an independent water outlet pipe to inject water into the water tank and pump water from the water tank; during pushing, the downwarping amount of the cantilever of the steel box girder is monitored at any time, when the downwarping amount reaches the maximum allowable value, water is injected into the water tank located behind the cantilever, downwarping of the cantilever is counteracted through the balance weight of the water tank, and it is guaranteed that the downwarping amount of the cantilever does not exceed the maximum allowable value. Only the permanent bridge pier is used as a pushing construction platform, a temporary support is not arranged, material input can be reduced, construction efficiency can be improved, and smooth construction and construction safety can be guaranteed.
本发明涉及一种山区高墩大跨度无支架钢箱梁顶推安装方法，在钢箱梁顶面两侧沿纵向分别设置一列水箱，每列水箱包括多个独立的水箱，每个水箱采用独立的注水管和出水管向水箱内注水和从水箱内抽水；顶推时，随时监测钢箱梁悬臂的下挠量，当下挠量达到最大允许值时，在位于悬臂后方的水箱内注水，通过水箱配重抵消悬臂下挠，保证悬臂下挠量不超过最大允许值。本发明只利用永久桥墩作为顶推施工平台，不设临时支架，能减少材料投入，提高施工效率，并能保证施工顺利进行和施工安全。
Pushing installation method for high-pier large-span support-free steel box girder in mountainous area
The invention relates to a mountainous area high-pier large-span support-free steel box girder pushing installation method, which is characterized in that two rows of water tanks are respectively arranged on two sides of the top surface of a steel box girder along the longitudinal direction, each row of water tanks comprises a plurality of independent water tanks, and each water tank adopts an independent water injection pipe and an independent water outlet pipe to inject water into the water tank and pump water from the water tank; during pushing, the downwarping amount of the cantilever of the steel box girder is monitored at any time, when the downwarping amount reaches the maximum allowable value, water is injected into the water tank located behind the cantilever, downwarping of the cantilever is counteracted through the balance weight of the water tank, and it is guaranteed that the downwarping amount of the cantilever does not exceed the maximum allowable value. Only the permanent bridge pier is used as a pushing construction platform, a temporary support is not arranged, material input can be reduced, construction efficiency can be improved, and smooth construction and construction safety can be guaranteed.
本发明涉及一种山区高墩大跨度无支架钢箱梁顶推安装方法，在钢箱梁顶面两侧沿纵向分别设置一列水箱，每列水箱包括多个独立的水箱，每个水箱采用独立的注水管和出水管向水箱内注水和从水箱内抽水；顶推时，随时监测钢箱梁悬臂的下挠量，当下挠量达到最大允许值时，在位于悬臂后方的水箱内注水，通过水箱配重抵消悬臂下挠，保证悬臂下挠量不超过最大允许值。本发明只利用永久桥墩作为顶推施工平台，不设临时支架，能减少材料投入，提高施工效率，并能保证施工顺利进行和施工安全。
Pushing installation method for high-pier large-span support-free steel box girder in mountainous area
一种山区高墩大跨度无支架钢箱梁顶推安装方法
HUANG ZHENWEI (Autor:in) / LI YONG (Autor:in) / JIANG DELIN (Autor:in) / WANG ANWEN (Autor:in) / LIU CHENQING (Autor:in) / XUE HUI (Autor:in) / GAO WENKANG (Autor:in) / XU JIAJIN (Autor:in) / YU CE (Autor:in) / LI YE (Autor:in)
22.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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