A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Large-span variable-cross-section steel box girder incremental launching construction method
The invention relates to a large-span variable-cross-section steel box girder incremental launching construction method which is applied to large-span variable-cross-section bridge construction. A supporting support, a pushing support and an assembling support are arranged, the variable-cross-section steel box girder is sequentially arranged on the pushing support and/or the assembling support on the two banks of the water channel after being manufactured, assembling is conducted, the relative position of the steel box girder and the pushing support is adjusted, and pushing is conducted towards the center of the water channel; and after the steel box girder reaches the preset position, posture adjustment, anchoring, closure and welding are conducted, the steel box girder falls on the supporting bracket, and construction is completed. The advantages of high tensile strength, high elastic modulus, high material utilization efficiency, good bearing capacity and no redundant components of the steel box girder are fully utilized, the dead weight is small, and the manufacturing cost is low; the bridge body meets the large-span variable cross-section design requirement and meets the design standard, the structural reliability is high, and water channel navigation is not affected in the construction process; the construction cost is low, the safety coefficient is high, the erection efficiency is high and the construction period is short; the purpose of increasing the height of the bridge arch is achieved, and more complex and changeable navigation requirements are met.
本发明涉及一种大跨度变截面钢箱梁顶推施工方法，应用于大跨度变截面桥梁施工；布设支撑支架、顶推支架和拼装支架，完成变截面钢箱梁制作后于水道两岸按序置于顶推支架和/或拼装支架上，进行拼装并调整钢箱梁与顶推支架的相对位置，向水道中心顶推；钢箱梁到达预设位置后进行姿态调整，锚固、合龙、焊接，落于支撑支架上，完成施工。本发明充分利用钢箱梁抗拉强度高、弹性模量高、材料利用效率高、承载能力好、无冗余构件的优势，自重小，造价低；桥体满足大跨度变截面的设计要求，符合设计标准，结构可靠性高，施工过程中不影响水道通航；施工成本小，安全系数高，架设效率高，工期短；实现增加桥拱高度的目的，满足更复杂多变的通航需求。
Large-span variable-cross-section steel box girder incremental launching construction method
The invention relates to a large-span variable-cross-section steel box girder incremental launching construction method which is applied to large-span variable-cross-section bridge construction. A supporting support, a pushing support and an assembling support are arranged, the variable-cross-section steel box girder is sequentially arranged on the pushing support and/or the assembling support on the two banks of the water channel after being manufactured, assembling is conducted, the relative position of the steel box girder and the pushing support is adjusted, and pushing is conducted towards the center of the water channel; and after the steel box girder reaches the preset position, posture adjustment, anchoring, closure and welding are conducted, the steel box girder falls on the supporting bracket, and construction is completed. The advantages of high tensile strength, high elastic modulus, high material utilization efficiency, good bearing capacity and no redundant components of the steel box girder are fully utilized, the dead weight is small, and the manufacturing cost is low; the bridge body meets the large-span variable cross-section design requirement and meets the design standard, the structural reliability is high, and water channel navigation is not affected in the construction process; the construction cost is low, the safety coefficient is high, the erection efficiency is high and the construction period is short; the purpose of increasing the height of the bridge arch is achieved, and more complex and changeable navigation requirements are met.
本发明涉及一种大跨度变截面钢箱梁顶推施工方法，应用于大跨度变截面桥梁施工；布设支撑支架、顶推支架和拼装支架，完成变截面钢箱梁制作后于水道两岸按序置于顶推支架和/或拼装支架上，进行拼装并调整钢箱梁与顶推支架的相对位置，向水道中心顶推；钢箱梁到达预设位置后进行姿态调整，锚固、合龙、焊接，落于支撑支架上，完成施工。本发明充分利用钢箱梁抗拉强度高、弹性模量高、材料利用效率高、承载能力好、无冗余构件的优势，自重小，造价低；桥体满足大跨度变截面的设计要求，符合设计标准，结构可靠性高，施工过程中不影响水道通航；施工成本小，安全系数高，架设效率高，工期短；实现增加桥拱高度的目的，满足更复杂多变的通航需求。
Large-span variable-cross-section steel box girder incremental launching construction method
一种大跨度变截面钢箱梁顶推施工方法
SHU YUZHENG (author) / LIU HUILI (author) / JIANG XIDONG (author) / HE BIN (author) / YUAN QINGHAI (author) / JIN HUAFENG (author) / LIU DELONG (author) / ZHENG JIAN (author) / LI JIAJIA (author) / CHEN ZHE (author)
2022-04-29
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Side span steel truss girder incremental launching construction method
| European Patent Office | 2024
Large-span steel truss girder incremental launching construction device and method
| European Patent Office | 2024
Large-span steel truss girder bridge incremental launching construction auxiliary device and method
| European Patent Office | 2024
Incremental launching construction method for large-span steel box girder bridge crossing riverway
| European Patent Office | 2024
Reinforcing device for incremental launching construction of large-span steel truss girder bridge
| European Patent Office | 2024