Method for installing steel box arch rib buckle by hanging method

Abstract

The invention discloses a method for installing a steel box arch rib buckle by the hanging method. The method is characterized in that: the construction method is divided into three stages, namely a lifting stage, a positioning stage, a buckle conversion stage and a secondary stretching stage; the steel box arch rib buckle mounting method comprises the following steps: The method has clear division of each stage, clear stress of each stage of the buckling and hanging system structure, and convenient construction control of various operations, which lays a foundation for ensuring the ideal goalof the bridge state. At the same time, the quick locking device used in the construction method can be used for temporary consolidation, the operation is simple and convenient, the connection is fast, the connection strength is guaranteed, the connection can be recycled after simple treatment, and has certain installation deviation adaptability. Therefore, it can be said that the construction method designed by the invention has a relatively prominent embodiment in technology, quality, safety and economy, and is particularly suitable for popularizing and applying in the field, and has a verybroad market prospect.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to an installation and construction method of a steel box arch rib buckle hanging method. Background technique [0002] In the past installation and construction of steel box arch rib buckle hanging method, when installing a single arch rib, the arch rib installation segment is usually hoisted to the position to be installed by a crane, and the arch rib is fixed by a code plate, a jack, a crane, etc. Adjust the posture and position of the installation segment. At this time, the two sections of arch ribs may have been connected through the code plate. After adjustment, the two sections of arch ribs are usually connected through the code plate or clamps. In order to ensure construction safety, the connection force between the installation arch rib and the target arch rib is generally greater than the force required for the conversion process of the buckle. The connection method is g...

AI Technical Summary

Problems solved by technology

In order to ensure construction safety, the connection force between the installation arch rib and the target arch rib is generally greater than the force required for the conversion process of the buckle. The connection method is generally welding, and the operation time is long; but at this time due to temperature changes, sunshine Changes in the strength of the direction will inevitably lead to changes in the axis of the steel arch rib. That is to say, after the welding connection operation is completed, the condition and state between the installed arch rib and the target arch rib is no longer the adjusted condition and state. In fact, it can be I think the previously adjusted position of the arch rib is meaningless

[0003] At this time, it is necessary to adjust the coordinates of the arch ribs in the installation section again, but at this time, a solid connection has been established between the two sections of arch ribs through a sufficiently strong code plate. Alignment is adjusted so that unknown favorable or unfavorable excess stresses are induced in the installed ribs

That is to say, during the entire process of adjusting the coordinates of the arch ribs in the installation section, from the random connection of the code plate at the beginning to the adjustment again after the connection, the state of the connection between the two arch rib segments is uncertain, which is not convenient for analysis. Whether the adjustment process brings favorable or unfavorable stress to the arch ribs sets unfavorable conditions for the realization of the ideal target bridge state

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