Construction technology of closure section for rotary continuous beam for overpass electrified railway and hanging basket thereof

Abstract

The invention discloses a construction technology of a closure section for a rotary continuous beam for an overpass electrified railway and a hanging basket thereof. The construction technology comprises the steps as follows: the hanging basket is designed; a place of a T-shaped structure on one side is selected for assembling a suspension bracket outside an existing railway; a protection bottom plate is laid under a template, and dense screens on both sides are hung on the outer sides of a scaffold; assembling reinforcement and casting closure are carried out; when the template is dismantled, the template is released firstly, an anchoring system of a main pier is cut off, a connecting system positioned outside a wing plate is still kept at the moment, finish rolling deformed steel bars are lengthened on the top surface of the beam to penetrate through the variable cross-section of a beam body so as to lead the template to retreat to the other side, and then the template is dismantled; in addition, a dynamic system adopts bar reinforcement rings that are pre-buried in the beam body, and the template can move through a chain block. Through the adoption of the movable hanging basket, the construction technology for the hanging basket is simplified, the construction security risk of the existing railway is reduced, skylight point construction above the existing railway is more flexible, and the construction period of the closure section is shortened.

Description

technical field [0001] The invention relates to a construction process for a closing section of a swivel continuous beam across an electrified railway and a hanging basket thereof. Background technique [0002] In the general construction of swivel continuous beams across electrified railways, hanging baskets are often used in the closing section, and the hanging baskets are assembled in the closing section. This construction method often has many disadvantages: 1. The hanging baskets are assembled and dismantled above the existing lines. Operation, and the operation time is long, it is necessary to apply for the operation of the railway "skylight" point for a long time, and the construction is limited by the "skylight" point; 2. The construction time of the existing line is long and the safety risk is high; 3. The assembly and dismantling of hanging baskets are subject to The existing construction site is limited, the selection of machinery and equipment is difficult, and t...

AI Technical Summary

Problems solved by technology

[0002] In the general construction of swivel continuous beams spanning electrified railways, the closing section is mostly constructed with hanging baskets, and the hanging baskets are assembled in the closing section. This construction method often has many disadvantages: 1. The hanging baskets are assembled and dismantled above the existing lines. operation, and the operation time is long, and it is necessary to apply for a long-term operation at the "skylight" point of the railway, and the construction is subject to the time limit of the "skylight" point; 2. The existing line has a long construction time and a large safety risk; 3. The assembly and dismantling of the hanging basket is subject to The construction site of the existing line is limited, the selection of mechanical equipment is difficult, and the construction cost is high; 4. The hanging basket can only be assembled after the rotation is completed, which increases the construction period

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