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A platform for research: civil engineering, architecture and urbanism
Construction method for dismantling cable-stayed bridge without support
The invention relates to the technical field of cable-stayed bridge demolition, and discloses a cable-stayed bridge support-free demolition construction method which comprises the following steps that a tower crane is arranged in the middle of one side of a main beam, closure section box beams are cut in a segmented mode, and the tower crane enables the cut closure section box beams to fall to the ground through a beam conveying trolley; releasing and detaching the stay cable on the outermost side; repeating the dismantling method of the box girders and the stay cables of the closure section, dismantling the rest of the girder sections, and sequentially dismantling the stay cables of the corresponding girder sections until the 1 # girder; a temporary working platform is erected on a bridge tower, an upper tower column and a middle tower column are dismantled in a segmented mode, a 0 # beam is dismantled, a lower tower column is put down, and the lower tower column is dismantled in a segmented mode; a support-free mode is adopted for dismantling, only temporary piers need to be additionally arranged at tower beam piers or do not need to be additionally arranged at the tower beam piers, a tower crane is arranged on one side of a 0 # beam of a main beam, the main beam is cut in a segmented mode and transported through a beam transporting trolley, and the cut beam sections are lowered to the ground to be transported away, so that the labor intensity of operators is reduced, and the cable-stayed bridge is quickly dismantled without a support.
本发明涉及斜拉桥拆除技术领域，公开了一种斜拉桥无支架拆除的施工方法，包括如下步骤：塔式吊机置于主梁一侧中间位置，分段切割合龙段箱梁，塔式吊机通过运梁小车将切割后的合龙段箱梁落地；放张并拆除最外侧斜拉索；重复合龙段箱梁以及斜拉索的拆除方法，拆除其余梁段，并且顺序位于对应梁段斜拉索的拆除之后，直到1#梁；在桥塔搭设临时工作平台，分段拆除上塔柱和中塔柱，拆除0#梁，下塔柱放倒，分段拆除下塔柱；采用无支架的方式拆除，只需或无需在塔梁墩处增设临时墩，通过将塔式吊机置于主梁0#梁一侧，对主梁分段切割并借助运梁小车运输，将切割的梁段下放至地面运走，从而减小了作业人员的劳动强度，实现了无支架快速拆除斜拉桥。
Construction method for dismantling cable-stayed bridge without support
The invention relates to the technical field of cable-stayed bridge demolition, and discloses a cable-stayed bridge support-free demolition construction method which comprises the following steps that a tower crane is arranged in the middle of one side of a main beam, closure section box beams are cut in a segmented mode, and the tower crane enables the cut closure section box beams to fall to the ground through a beam conveying trolley; releasing and detaching the stay cable on the outermost side; repeating the dismantling method of the box girders and the stay cables of the closure section, dismantling the rest of the girder sections, and sequentially dismantling the stay cables of the corresponding girder sections until the 1 # girder; a temporary working platform is erected on a bridge tower, an upper tower column and a middle tower column are dismantled in a segmented mode, a 0 # beam is dismantled, a lower tower column is put down, and the lower tower column is dismantled in a segmented mode; a support-free mode is adopted for dismantling, only temporary piers need to be additionally arranged at tower beam piers or do not need to be additionally arranged at the tower beam piers, a tower crane is arranged on one side of a 0 # beam of a main beam, the main beam is cut in a segmented mode and transported through a beam transporting trolley, and the cut beam sections are lowered to the ground to be transported away, so that the labor intensity of operators is reduced, and the cable-stayed bridge is quickly dismantled without a support.
本发明涉及斜拉桥拆除技术领域，公开了一种斜拉桥无支架拆除的施工方法，包括如下步骤：塔式吊机置于主梁一侧中间位置，分段切割合龙段箱梁，塔式吊机通过运梁小车将切割后的合龙段箱梁落地；放张并拆除最外侧斜拉索；重复合龙段箱梁以及斜拉索的拆除方法，拆除其余梁段，并且顺序位于对应梁段斜拉索的拆除之后，直到1#梁；在桥塔搭设临时工作平台，分段拆除上塔柱和中塔柱，拆除0#梁，下塔柱放倒，分段拆除下塔柱；采用无支架的方式拆除，只需或无需在塔梁墩处增设临时墩，通过将塔式吊机置于主梁0#梁一侧，对主梁分段切割并借助运梁小车运输，将切割的梁段下放至地面运走，从而减小了作业人员的劳动强度，实现了无支架快速拆除斜拉桥。
Construction method for dismantling cable-stayed bridge without support
一种斜拉桥无支架拆除的施工方法
YANG GUANGJUN (author) / LI YANG (author) / WANG SENSEN (author) / JIANG ZUOQIAN (author) / LIU JIWEN (author) / XIE QIANWEI (author) / ZHANG YILI (author) / MA XIAOMING (author) / PANG JIACHENG (author)
2024-05-10
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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