Method for manufacturing segmental box girder

Abstract

The invention discloses a method for manufacturing a segmental box girder, which mainly comprises the following steps of: (A) prefabricating a first segmental block on a short-line pedestal; (B) prefabricating a second girder block on a long-line pedestal by taking the first segmental block as the matched girder; (C) prefabricating a third block on the long-line pedestal by taking the second girder block as the matched girder and sequentially prefabricating the blocks one by one until circulating to prefabricate the segmental block adjacent to the last segmental block of the box girder, namely, the last-but-one segmental girder block; and (D) prefabricating the last segmental block on the short-line pedestal by taking the last-but-one segmental girder block as the matched girder. The method for manufacturing the segmental box girder adopts a long-line and short-line matched prefabrication process principle so as to greatly shorten the construction period, increase the quality standardof the project, and reduce the error generated in the matched prefabrication process of the box girder.

Description

Technical field: [0001] The invention relates to the technical field of bridge construction, in particular to a method for manufacturing a segmental box girder. Background technique: [0002] With the increasing development of the economy, the construction of elevated roads with full-bore supports can no longer meet the requirements of rapid and civilized construction; a bridge without support construction method that replaces the existing full-bore support construction is to use engineering prefabricated segments and then assemble them on site The method of box girder is being developed day by day in China. At present, in China, the application time of box girder prefabricated segment assembly construction technology is short, and there are few engineering examples for reference and reference; because there is no corresponding design and acceptance in China Standards, the design unit adopted the current European quality control standards and some standards of domestic railw...

AI Technical Summary

Problems solved by technology

Using this method can make the geometric shape easy to arrange and control, the structure is simple, and the construction and production process is relatively easy to control; after demoulding, the beam section does not need to be transported to the storage place immediately; the deviation will not accumulate, and for the formed block section The deviation can be adjusted in time through the next block, and multiple points can be matched with prefabrication at the same time, so the construction progress is fast; but in the production process, it occupies a large area; the pedestal must be built on a solid foundation

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