Limited space pier group hollow high pier asynchronous hydraulic creeping formwork construction method
A technology with limited space and construction methods, applied in the direction of bridges, bridge construction, bridge parts, etc., can solve the problems of synchronous construction of group piers and large construction interference, and achieve the effects of shortening dismantling time, improving construction efficiency, and reducing dependence
Active Publication Date: 2021-01-01
CCCC THIRD HARBOR ENG +2
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Problems solved by technology
Especially when the group of piers is located on the mountainside, one side faces the valley and the other side faces the cliff, and the maximum arm width of the tower crane is only 50m, the maximum distance between the piers is 5.5m, and the minimum distance is 5m (the net distance between the two-leg piers). The climbing formwork system requires a minimum plane width of 2.7 meters, and the construction interference between piers is relatively large, which does not meet the conditions for simultaneous construction of group piers
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[0045] The present invention will be further described below in conjunction with accompanying drawing.
[0046] see Figure 1 to Figure 14 , the asynchronous hydraulic formwork climbing construction method of the hollow high pier of the limited space pier group of the present invention adopts the hydraulic formwork climbing system to build the left front pier column 1A, the left rear pier column 1B, the right front pier column 2A and the right rear pier Column 2B, the four piers are all hollow high piers and are separated into the first section to the fourth section inner box by the first to the third transverse partition; the left front pier 1A and the left The distance between the rear pier 1B and the distance between the right front pier 2A and the right rear pier 2B is 5.00m; the distance between the left front pier 1A and the right front pier 2A and the left rear pier 1B The distance from the right rear pier 2B is 5.50m; the left front pier 1A and the left rear pier 1B, ...
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The invention discloses a limited space pier group hollow high pier asynchronous hydraulic creeping formwork construction method which comprises the steps that a left front pier column, a left rear pier column, a right front pier column and a right rear pier column are built through a hydraulic creeping formwork system, and the left front pier column, the left rear pier column, the right front pier column and the right rear pier column form double-limb thin-wall hollow piers through inter-pier tie beams respectively; each pier column is divided into 24 sections and a pier top stop block for construction; firstly, a tower crane is installed in front of the middle of a left front pier column and a right front pier column, then the left front pier column is constructed, after the first section and the second section of the left front pier column are constructed, the right front pier column starts to be constructed, and after the first section and the second section of the right front piercolumn are constructed, a right rear pier column starts to be constructed; after the first section and the second section of the right rear pier column are constructed, the left rear pier column starts to be constructed; and after construction of the four pier columns is completed and the creeping formwork system is dismounted, construction of tie beams between the piers is conducted. The jackinginterference of the hydraulic climbing formwork system in different construction procedures can be avoided in a limited space.
Description
technical field [0001] The invention relates to a construction method of asynchronous hydraulic formwork climbing for hollow high piers of pier groups in limited space. Background technique [0002] With the rapid development of transportation in the Yunnan-Guizhou Plateau, the terrain is steep, and it is normal to cross mountain valleys. During the route selection and construction of high-grade highways, it is inevitable that bridge spans will become larger and piers will be built higher and higher. The problem. How to improve and coordinate the construction speed of groups of piers in the limited space of expressways in mountainous areas has become the focus of current research. Especially when the group of piers is located on the mountainside, one side faces the valley and the other side faces the cliff, and the maximum arm width of the tower crane is only 50m, the maximum distance between the piers is 5.5m, and the minimum distance is 5m (the net distance between the tw...
Claims
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IPC IPC(8): E01D21/00E01D19/02B66C23/26
CPCB66C23/26E01D19/02E01D21/00
Inventor 林李前查志林林恩辉万龙徐奇振
Owner CCCC THIRD HARBOR ENG