Positioning settlement method of large steel suspension box or sinking well
A positioning method and steel hanging box technology, which can be applied to caissons, buildings, infrastructure engineering, etc., and can solve problems such as the difficulty of precise positioning of steel hanging boxes
Inactive Publication Date: 2011-10-26
CCCC SECOND HARBOR ENG
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However, this process requires a large number of positioning anchors to temporarily fix the positioning ship, and the positioning ship process is greatly affected by the water level of the Yangtze River and passing ships, which will cause up and down or left and right swings, which bring great difficulties to the precise positioning of the steel hanging box
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[0015] The positioning of the large steel hanging box through the upstream anchor pier and the downstream anchor pier is as follows: figure 1 As shown, the upstream anchor pier 100 is connected to the large steel suspension box 400 through the stay cable, and the downstream anchor pier 300 is connected to the large steel suspension box 400 through the stay cable to realize the positioning of the large steel suspension box.
[0016] The plane size of the upstream anchor pier 100 is 17m×18m, and the substructure uses 16 φ1000×10mm steel pipe piles with a slope of 4:1 as the pile foundation. m, 4.0m; the distance between the four rows along the bridge is 4.5m, and φ600×8mm steel pipe parallel braces and φ400×6mm connection braces are set at the elevation +19.0m, and diagonal braces are set in two directions. The elevation of the platform top is +24.0m, and the platform adopts the structure of main steel box girder, main beam and distribution secondary beam. 2HN500×200mm H-shaped...
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The invention discloses a positioning settlement method of a large steel suspension box or sinking well, which comprises the following steps: firstly, respectively connecting two ends of a cable rotating floating crane with an upstream anchorage pier and a downstream anchorage pier through cables and positioning; respectively connecting an upstream pull cable and a downstream pull cable which are used for positioning a steel suspension box and pass through between the upstream anchorage pier and the downstream anchorage pier with two ends of the floating crane; moving the steel suspension box to be connected with the floating carne; rotating the cables: transferring the upstream pull cable which is used for positioning the steel suspension box and is arranged between the upstream anchorage pier and the cable rotating floating crane to a positioning point for positioning the steel suspension box from the cable rotating floating crane, transferring the downstream pull cable which is used for positioning the steel suspension box and is arranged between the downstream anchorage pier and the cable rotating floating crane to a positioning point for positioning the steel suspension box from the cable rotating floating crane, moving the cable rotating floating crane and positioning the steel suspension box to be put in place, and realizing the positioning of the large steel suspension box or open caisson. By adopting the positioning anchor pier process, the invention can solve the problem of the instability of a ship, increase the rigidity of the positioning system, and ensure the sinking accuracy of the steel suspension box or open caisson.
Description
technical field [0001] The invention belongs to a technical construction method of a bridge, and in particular relates to a method for positioning and sinking a large steel hanging box or caisson. Background technique [0002] At present, for steel hanging boxes or steel caissons on the Yangtze River, positioning ships and anchoring systems are generally used for positioning. However, this process requires a large number of positioning anchors to temporarily fix the positioning ship, and the positioning ship process is greatly affected by the water level of the Yangtze River and passing ships, which will cause up and down or left and right swings, which bring great difficulties to the precise positioning of the steel hanging box. Contents of the invention [0003] The object of the present invention is to provide a method for realizing positioning and sinking of a large steel hanging box or caisson by utilizing the upstream anchor pier and the downstream anchor pier, so as...
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IPC IPC(8): E02D23/08
Inventor 徐斯林陈超华穆清君罗自立孙琦
Owner CCCC SECOND HARBOR ENG