Supporting structure for reconstructing self-anchored suspension bridge and bridge reconstruction method

Abstract

The invention discloses a supporting structure for reconstructing a self-anchored suspension bridge and a bridge reconstruction method. The newly-built bridge comprises independent continuous beam bridges arranged on the two sides of a to-be-dismantled old bridge and a middle bridge amplitude structure for connecting the two independent continuous beam bridges after the to-be-dismantled old bridge is dismantled. The supporting structure comprises a temporary supporting device needing to be dismantled after reconstruction is completed, and a permanent supporting device serving as a part of a newly-built bridge after reconstruction is completed. The permanent supporting device comprises a plurality of permanent supports and a cross beam supporting system; the temporary supporting device comprises a plurality of temporary supports and corresponding temporary piers. During reconstruction, two independent continuous beam bridges are firstly constructed, then traffic is guided to the independent continuous beam bridge on one side, and the independent continuous beam bridge on the other side serves as a construction channel; and after the middle bridge amplitude structure is installed, the suspenders are tensioned in batches to complete system conversion of the newly-built bridge. On the premise that the traffic requirement is met, the bridge construction project can be smoothly carried out.

Description

technical field [0001] The invention relates to the technical field of bridge rebuilding, in particular to a support structure and a bridge rebuilding method for rebuilding a self-anchored suspension bridge. Background technique [0002] In the prior art, the construction technology of the self-anchored suspension bridge adopts the beam first and then the cable construction, that is, the substructure and the bridge tower are constructed first, then the support is cast-in-place or the stiffening beam is installed, and then the main cable and suspender are installed. into a bridge. When there is a bridge in the current state of the bridge, the traditional craft needs to demolish the existing bridge first, and then build a suspension bridge. During the reconstruction of the bridge, the existing traffic had to be interrupted and detoured, which brought a lot of inconvenience to the nearby residents and increased the traffic pressure on the surrounding roads. [0003] However, ...

AI Technical Summary

Problems solved by technology

During the reconstruction of the bridge, the existing traffic had to be interrupted and detoured, which brought a lot of inconvenience to the nearby residents and increased the traffic pressure on the surrounding roads

[0003] However, in actual urban development and construction, some large-scale cross-river bridge widening and reconstruction projects must meet the needs of traffic protection. In this context, the design and construction of self-anchored suspension bridges using traditional techniques cannot meet the needs of urban development and construction.

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