Three-span variable-height steel-concrete mixed continuous beam construction method
A technology of mixed continuous and construction methods, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of unfavorable waterway use, large site impact, complex construction technology, etc., and shorten the temporary occupation time and hoisting time Short, the effect of improving the construction accuracy
Pending Publication Date: 2020-08-07
SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD
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Problems solved by technology
Using such a construction method, firstly, the waterway needs to be closed for a long time during the construction period, and the long-term occupation of the waterway is not conducive to the use of the waterway; secondly, the construction process is relatively complicated, the construction time is long, and it is also greatly affected by the site
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[0018] Example: as Figure 1 to Figure 3 As shown, the construction method of the three-span variable-height steel-concrete hybrid continuous beam in this embodiment is realized by the following steps, taking a certain actual project as an example:
[0019] 1) The segmental box girder of block 0# is cast-in-situ with cantilever brackets, and temporary locking and caps are set in block 0# for consolidation.
[0020] The construction of block 0# includes the following key points: Pier top treatment: In order to fill the gap on the side of the pier top support, a half brick wall can be built on the four peripheral lines of the pier top, and the height of the brick wall is 3- 5cm, then fill sand in the gap on the top of the pier and sprinkle water to vibrate it, then pour 3-5cm fine-graded concrete, the top surface of the concrete is 2-3mm higher than the support, and finally coat a layer of butter as the bottom mold of the 0# block . When the system conversion is completed, the...
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The invention relates to the technical field of bridge construction, in particular to a three-span variable-height steel-concrete mixed continuous beam construction method which comprises the following steps: firstly, constructing a NO. 0 block of a steel-concrete mixed continuous beam; after completion, symmetrically pouring first to eighth hanging basket cantilevers; after completion, hoisting asteel-concrete combined section; during hoisting, arranging a rhombus hanging basket at the position of an eighth poured beam body section, arranging a hoisting platform on the rhombus hanging basket, wherein the hoisting platform is provided with four hydraulic lifters, and the four hydraulic lifters are used for hoisting the steel box girder of the steel-concrete combined section to a mountingposition of the steel box girder from a river middle girder transporting ship; after the steel box girder is hoisted in place, creating a steel-concrete combined section reinforced concrete structureof the girder section, so that a steel-concrete combined section is formed; removing the temporary lock of the NO. 0 block; constructing a mid-span closure section and forming the three-span variable-height steel-concrete mixed continuous beam. The invention has the advantages that hoisting time is short, the traffic can be opened after the vehicle is in place, the temporary occupation time of roads and navigation channels is shortened, and the adverse effect on social traffic is reduced.
Description
technical field [0001] The invention relates to the technical field of bridge construction, in particular to a construction method for a three-span variable-height steel-concrete hybrid continuous beam. Background technique [0002] For the construction of bridges carried out on the passing waterway, currently in the prior art, large-scale lifting equipment of floating chandeliers is routinely used to lift the components into place. Assembled construction on the bracket. With such a construction method, firstly, the channel needs to be closed for a long time during the construction period, and the long-term occupation of the channel is not conducive to the use of the channel; secondly, the construction process is relatively complicated, the construction time is long, and it is also greatly affected by the site. Contents of the invention [0003] The purpose of the present invention is to provide a three-span variable-height steel-concrete hybrid continuous beam constructi...
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CPCE01D21/00
Inventor 陈立生黄永春邱豪侠常荣亮徐伟忠
Owner SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD
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