Layered construction method suitable for high haunched upper cross beam of bridge tower
A layered construction and beam technology, which is applied to bridges, bridge parts, bridge materials, etc., can solve the problems of heavy hoisting workload, high-altitude welding workload, and high-altitude operation risks, so as to reduce stress and save material consumption Effect
Inactive Publication Date: 2020-07-28
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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Problems solved by technology
Its disadvantages are: a large number of steel pipe supports need to be erected, the workload of hoisting and high-altitude welding is heavy during installation and removal, there is a great risk of high-altitude operations, and the installation and disassembly of steel pipe supports takes a long time
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[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0035] The embodiment of the present invention provides a layered construction method suitable for the height of the bridge tower and the beam on the haunch, which includes the following steps:
[0036] S1: see figure 1 As shown, between the poured sections 10 of the two tower columns 1, a construction support 2 is installed at the design position;
[0037] Specifically, the embedded part 14 is installed at the design position, and the prestressed beam in the circumferential prestressed pipe in the tower column 1 near the embedded part 14 is tensioned and grouted; and then the embedded part 14 is welded A corbel 15, a spacer is installed on the corbel, and a support bottom distribution beam 16 is installed on the spacer;
[0038] see figure 2 As shown, the construction support 2 is assembled by a plurality of support units 20 of the same s...
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The invention discloses a layered construction method suitable for a high haunched upper cross beam of a bridge tower. The layered construction method comprises the following steps that a constructionsupport is installed; a bottom die is laid on the construction support; steel bars of a first construction layer are bound, a side formwork of the first construction layer is installed, the height ofthe side formwork is smaller than that of the top of the construction support, concrete of the first construction layer is poured, and a first-layer upper cross beam and a first-layer tower column are obtained; steel bars of a second construction layer are bound, a side formwork of the second construction layer is installed, the height of the side formwork is larger than that of the top of the construction support, concrete of the second construction layer is poured, and a second-layer upper cross beam and a second-layer tower column are obtained; steel bars of a third construction layer arebound, a side formwork of the third construction layer is installed, concrete of the third construction layer is poured, a third-layer upper cross beam and a third-layer tower column are obtained, andthe first-layer upper cross beam, the second-layer upper cross beam and the third-layer upper cross beam jointly form an upper cross beam. The poured concrete is fully used for supporting the newly-poured concrete on the upper layer, and the stress of the construction support can be reduced.
Description
technical field [0001] The invention relates to the technical field of bridge construction, in particular to a layered construction method suitable for the height of bridge towers and upper beams. Background technique [0002] H-type or A-type bridge tower is a kind of bridge tower form commonly used in bridge design today, and there are generally two construction methods for the upper beam: [0003] First, the construction of the high bracket method: that is, the floor bracket method, the bracket is erected from the top surface of the cap or the top surface of the lower beam. Its disadvantages are: a large number of steel pipe supports need to be erected, the installation and dismantling of the hoisting workload is heavy, the high-altitude welding workload is large, there is a great risk of working at heights, and the installation and disassembly of the steel pipe supports takes a long time. [0004] Second, use non-floor support for construction: when this method is used ...
Claims
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IPC IPC(8): E01D21/00E01D19/02E01D101/24E01D101/28
CPCE01D19/02E01D21/00E01D2101/24E01D2101/28
Inventor 林统励王令侠李旭刘爱林董继红赵成贵张爱花陶亚成胡雄伟刘幸福
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD