Cantilever pouring system and construction method of long-span railway reinforced concrete arch bridge

Abstract

The invention discloses a cantilever pouring system of a long-span railway reinforced concrete arch bridge. The system is characterized in that the embedded structure comprises a main arch abutment foundation (1), an approach bridge abutment (2) and a side pier foundation (3), and the large-temporary engineering structure comprises a back cable anchor spindle (4), a support (6) and a buckling tower (15); The buckle cable structure comprises a temporary buckle cable (11) and a back cable (12). The auxiliary tower crane assembly comprises a first tower crane (5) and a second tower crane (17), wherein the auxiliary tower crane assembly relays reinforcement cages (9) of each segment to be in place, thereby effectively solving the technical problem of constructing a long-span railway concrete arch bridge under the site condition that temporary supports cannot be installed. A long-span railway reinforce concrete arch bridge cantilever pouring construction method is also provide, which greatly increases construction efficiency compared with that traditional construction method and saves cable and part of ground anchor cost. The invention also provides a large-span railway reinforced concrete arch bridge cantilever pouring construction method.

Description

technical field [0001] The invention belongs to the technical field of railway bridge engineering, and more specifically relates to a cantilever pouring system and construction method for a large-span railway reinforced concrete arch bridge. Background technique [0002] my country's mountainous area is vast, accounting for two-thirds of the country's total area. Most of the mountainous railways have high mountains and deep valleys, steep terrain, complex geology, and inconvenient transportation. In order to meet the technical requirements of V-shaped canyons in mountainous areas and railway line selection, large-span railway concrete arch bridges continue to appear. [0003] The construction of railway concrete arch bridges under V-shaped valley terrain conditions mostly adopts the stiff skeleton construction method. The stiff skeleton structure is complex, and the outsourcing concrete needs to be poured in rings and sections. The high-altitude operation takes a long time, ...

AI Technical Summary

Problems solved by technology

[0004] In view of the high cost and difficult construction of the existing V-shaped canyon long-span railway reinforced concrete arch bridge, it is expected that there will be a way to reduce the construction difficulty, save the cost of cables and some ground anchor costs, shorten the construction period, and save construction cost plan

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