Combined type steel large cross beam erection multi-span make-shift beam line reinforcing method

Abstract

The invention discloses a combined type steel large cross beam erection multi-span make-shift beam line reinforcing method. The combined type steel large cross beam erection multi-span make-shift beamline reinforcing method comprises five steps of transition type D construction make-shift beam erection, steel large cross beam installation, distribution beam installation, formal type D construction make-shift beam backward-moving erection and limiting device installation. According to the method, the operation of normal traffic of a serving line is not influenced during the whole constructionprocess, and meanwhile, the traffic safety of the serving line (a railway ) is strengthened; two or more lines can be simultaneously reinforced at the same time through adoption of the steel large cross beams with different lengths, when two or more-hole frame box bridges are jacked, a multi-span type D construction make-shift beam can be erected, meanwhile, the multi-span type D construction make-shift beam is jacked, so that time and labor are saved, and the construction efficiency is at least improved by 50%; and the steel large cross beam, the distribution beam and the limiting device arein a combined connection mode and can be repeatedly used, split, spliced and repeatedly utilized, so that the labor cost and the material cost are greatly reduced.

Description

technical field [0001] The invention relates to a line reinforcement method for business lines, which is suitable for the jacking construction process of railway box bridges, and specifically refers to a line reinforcement method for erecting multi-span convenience beams with a combined steel large beam. Background technique [0002] With the rapid development of my country's railways in recent years, a railway network extending in all directions has been formed across the country. Therefore, there have been many projects for highway and railway interchanges, and the railway under the highway is the most common interchange mode at present. The most commonly used line reinforcement methods in the construction of overpasses are mostly D-shaped construction beams, vertical and horizontal beam lifting methods, etc. Underpass railway overpasses are generally two-hole or porous structures. During construction, after the line is reinforced, the frame box section of one hole is fir...

AI Technical Summary

Problems solved by technology

Underpass railway overpasses are generally two-hole or porous structures. During construction, after the line is reinforced, the frame box section of one hole is first jacked, and then the beam is moved and inverted to jack into the other hole. This has a long construction period, and the porous frame box section cannot be jacked at one time. The scope of application is small, and it is easy to be limited by geological conditions.

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