A construction method of asynchronous hydraulic climbing formwork for hollow high piers of pier groups in limited space
A technology with limited space and construction method, applied in the direction of bridges, bridge construction, bridge parts, etc., can solve the problems of not satisfying the synchronous construction of group piers, large construction interference, etc., to improve construction efficiency, avoid jacking collision, and improve construction speed Effect
Active Publication Date: 2021-11-30
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 an asynchronous hydraulic formwork climbing construction method for hollow high piers of bridge pier groups in limited space. The hydraulic climbing formwork system is used to construct the left front and rear pier columns, the right front and right rear pier columns, and the left front and rear pier columns. The pier column and the front and rear pier columns of the right panel respectively pass a tie beam between the piers to form a double-leg thin-walled hollow pier; each pier column is divided into 24 segments and a pier top block for construction; Install the tower crane in front of the middle of the pier column and the right front pier column, and then construct the left front pier column. After completing the first and second sections of the right front pier, start the construction of the right rear pier, and after completing the construction of the first and second sections of the right rear pier, start the construction of the left rear pier; After the construction of the four piers is completed and the climbing formwork system is removed, the construction of the tie beams between the piers will be carried out. The invention can avoid the jacking interference of the hydraulic climbing formwork system in different construction procedures 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...
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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