Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large cantilever flange steel box girder pre-assembling and hoisting construction method
The invention relates to a large cantilever flange steel box girder pre-assembling and hoisting construction method which comprises the following steps: temporarily supporting and mounting a steel box girder section by adopting a bracket method, and carrying out mounting operation of a steel cantilever on a steel box girder bridge floor; mounting and debugging a steel cantilever hoisting stabilizing bracket on the bridge deck of the steel box girder; the welding operation platform is hung below the first section of steel cantilever, the first sliding crown block is controlled to slide towards the outer side of the steel box girder, and meanwhile the second sliding crown block is controlled to move towards the other side to balance the load of the steel cantilever; the welding operation of the steel cantilever is carried out; and the connection between the first sliding crown block and the steel cantilever is relieved, and hoisting welding of the next section of the steel cantilever is conducted. The hoisting device has the beneficial effects that the first sliding crown block used for hoisting the steel cantilever section and the second sliding crown block used for hoisting the saddle weight are connected with the crown block track in a sliding mode, the influence of the environment on hoisting operation can be effectively avoided, and meanwhile the safety and efficiency of the hoisting operation are guaranteed; the welding operation platform relying on the sliding of the steel cantilever and the steel box girder ensures the safety of welding operation personnel.
本发明涉及一种大悬臂翼缘钢箱梁预拼及吊装施工方法，包括步骤：钢箱梁节段采取支架法临时支撑安装，依托钢箱梁桥面开展钢悬臂的安装作业；在钢箱梁桥面上安装调试钢悬臂吊装稳定支架；焊接作业平台吊挂在首节钢悬臂下方，控制滑移天车一向钢箱梁外侧滑移，同时控制滑移天车二向另一侧移动以平衡钢悬臂的荷载；开展钢悬臂的焊接作业；解除滑移天车一与钢悬臂的连接，进行下一节段钢悬臂的吊装焊接。本发明的有益效果是：用于吊起钢悬臂节段的滑移天车一和用于吊起压重块的滑移天车二滑动连接天车轨道，可有效避免环境对吊装作业的影响，同时保证吊装作业的安全及效率；依托钢悬臂及钢箱梁滑移的焊接作业平台保证了焊接作业人员的安全。
Large cantilever flange steel box girder pre-assembling and hoisting construction method
The invention relates to a large cantilever flange steel box girder pre-assembling and hoisting construction method which comprises the following steps: temporarily supporting and mounting a steel box girder section by adopting a bracket method, and carrying out mounting operation of a steel cantilever on a steel box girder bridge floor; mounting and debugging a steel cantilever hoisting stabilizing bracket on the bridge deck of the steel box girder; the welding operation platform is hung below the first section of steel cantilever, the first sliding crown block is controlled to slide towards the outer side of the steel box girder, and meanwhile the second sliding crown block is controlled to move towards the other side to balance the load of the steel cantilever; the welding operation of the steel cantilever is carried out; and the connection between the first sliding crown block and the steel cantilever is relieved, and hoisting welding of the next section of the steel cantilever is conducted. The hoisting device has the beneficial effects that the first sliding crown block used for hoisting the steel cantilever section and the second sliding crown block used for hoisting the saddle weight are connected with the crown block track in a sliding mode, the influence of the environment on hoisting operation can be effectively avoided, and meanwhile the safety and efficiency of the hoisting operation are guaranteed; the welding operation platform relying on the sliding of the steel cantilever and the steel box girder ensures the safety of welding operation personnel.
本发明涉及一种大悬臂翼缘钢箱梁预拼及吊装施工方法，包括步骤：钢箱梁节段采取支架法临时支撑安装，依托钢箱梁桥面开展钢悬臂的安装作业；在钢箱梁桥面上安装调试钢悬臂吊装稳定支架；焊接作业平台吊挂在首节钢悬臂下方，控制滑移天车一向钢箱梁外侧滑移，同时控制滑移天车二向另一侧移动以平衡钢悬臂的荷载；开展钢悬臂的焊接作业；解除滑移天车一与钢悬臂的连接，进行下一节段钢悬臂的吊装焊接。本发明的有益效果是：用于吊起钢悬臂节段的滑移天车一和用于吊起压重块的滑移天车二滑动连接天车轨道，可有效避免环境对吊装作业的影响，同时保证吊装作业的安全及效率；依托钢悬臂及钢箱梁滑移的焊接作业平台保证了焊接作业人员的安全。
Large cantilever flange steel box girder pre-assembling and hoisting construction method
大悬臂翼缘钢箱梁预拼及吊装施工方法
QIAN SHENCHUN (Autor:in) / CHENG TAO (Autor:in) / CUI JIAN (Autor:in) / WEI MING (Autor:in) / JING HANLIN (Autor:in) / SHAO JIABING (Autor:in) / ZHANG YUMING (Autor:in) / YANG QING (Autor:in)
02.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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