Short-line prefabrication assembly method for variable section segmental beam

Abstract

The invention relates to a short-line prefabrication assembly method for a variable section segmental beam, belonging to the technical field of bridge construction. The short-line prefabrication assembly method includes the divisional design of a template, the manufacturing of a forward prefabricated beam, the manufacturing of a reverse prefabricated beam, the assembly of segmented beams and the like. The short-line prefabrication assembly method has the beneficial effects that a prefabricated pedestal can be fully effectively utilized, a formwork system is prefabricated by only adopting a small number of segmental beams, thus the prefabrication of all the variable section segmental beams of the main bridge can be completed, modification time of the large template caused by adjustment dueto a cross slope is avoided, the beam problems such as template idleness are avoided, the prefabrication work efficiency is greatly improved, the template adjustment is simple, convenient and accurate, and the sequence synchronization of prefabrication and on-site assembly is realized, which reduces the difficulty of construction coordination and shortens the assembly period.

Description

technical field [0001] The invention relates to a short-line prefabricated and assembled method for variable-section segmental beams, which belongs to the technical field of bridge construction. Background technique [0002] Based on the usual short-line matching prefabrication process, several pedestals are set up, and the first section is prefabricated on the pedestals with fixed end molds and movable end molds, and the first section is used as the matching beam to match and prefabricate to the mid-span in turn, and half of the T structure is completed. , and then use the other end of the first block as the matching surface to complete the other half of the T structure by matching prefabrication, that is, prefabrication follows one-way matching; and if the two-way matching of variable-section segmental beams adopts one-way matching, it is necessary to adjust the formwork to achieve The prefabrication of the front and back slopes and the adjustment of large formwork will in...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the waste of time due to the modification of multiple sets of large templates in the prefabrication of variable cross-section segmental beams due to the consideration of the adjustment of the transverse slope under the existing technical means

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