Fabricated steel-concrete combined rigid frame bridge and construction method thereof

Abstract

The invention discloses a fabricated steel-concrete combined rigid frame bridge and a construction method thereof. The fabricated steel-concrete combined rigid frame bridge comprises a plurality of prefabricated main beam sections, pier columns, prefabricated cross beams, longitudinal connecting sections and transverse connecting sections, and the prefabricated cross beams are arranged above the pier columns and are provided with slotted holes; exposed steel bars are arranged above the pier columns and are inserted into the slotted holes, and high-strength concrete grout is poured into the slotted holes to achieve connection of the prefabricated cross beams and the pier columns; and the prefabricated cross beams are connected with the prefabricated middle beam sections and the prefabricated end sections through bolting and welding, the prefabricated steel-concrete combined rigid frame bridge is convenient to prefabricate, transport and construct, the structural advantages of the steel-concrete combined beam can be brought into full play, and industrial production, segmented transportation and prefabricated construction can be achieved.

Description

technical field [0001] The invention relates to the technical field of bridges, in particular to an assembled steel-concrete composite rigid frame bridge and a construction method thereof. Background technique [0002] With the acceleration of the urbanization process, the construction of municipal infrastructure has gradually entered a climax, while the traditional cast-in-place construction will easily lead to a sudden drop in the traffic capacity of the construction area, affecting the smooth flow and safety of the road, and even frequent traffic interruptions, which greatly affect the life of residents. work and life; in addition, the traditional cast-in-place site has a large amount of work, low construction efficiency, high overall energy consumption, and serious disturbance to the residents. The prefabricated bridge can significantly speed up the construction progress and reduce the impact on the existing Traffic interference, and is conducive to environmental protect...

AI Technical Summary

Problems solved by technology

The commonly used design method of prefabricated steel-concrete composite continuous beams at this stage is to set the main beam as a longitudinal segmental member, and a large-scale cover beam structure is required, which increases the height of the structure, increases the construction cost, and greatly reduces the aesthetics.

In addition, the splicing between segments is realized through the support of temporary piers on site. The installation time of temporary piers usually runs through the whole process of bridge construction, which increases the interference of construction on the road below and increases the investment of construction units.

However, after the steel beams are constructed first, the concrete layer is poured on site. Although the temporary piers are removed after the steel beam splicing is completed, a large number of formworks need to be erected on site, which increases the workload on site. The characteristics of post-combination with concrete lead to an increase in the amount of steel used in the structure

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