Railway nonstandard beam erection construction method

Abstract

The invention discloses a railway nonstandard beam erection construction method and belongs to the technical field of erection methods of nonstandard beams. The railway nonstandard beam erection construction method comprises the steps of 1) lifting beams to a beam truck from a beam site; 2) transporting box beams; 3) feeding the beams; 4) lowering the beams; 5) returning the beam truck, and filling with support mortar; 6) passing a bridge machine through a hole. Before the step 1), a step of mounting lower guide beam legs is also provided; in the process of mounting the lower guide beam legs, mounting positions for calibrating front legs are recalculated at the front ends of lower guide beams according to different spans of non-standard beams, and the front legs are mounted. The railway nonstandard beam erection construction method provides high erection efficiency, and has greatly saved production cost.

Description

Technical field [0001] The invention relates to the technical field of erection methods of non-standard beams. Background technique [0002] At present, in the erection of railway bridges, the spans of standard box girder are basically 20m, 24m and 32m. The erection techniques and methods are relatively mature. However, in engineering construction, some bidding sections are often encountered. Standard box girder. [0003] The tender section in front of a railway passenger dedicated line station has a total length of 40.308 kilometers and a total of 1074 hole box beams. In order not to encroach on small rivers, ditches, and cross-country roads, 3 hole non-standard box girder is used for hole span adjustment. [0004] The original design adopts the support cast-in-place scheme, but uses the support cast-in-place construction, box girder model, turnover materials and higher; and the pier body is higher, the use of steel pipe column support system requires a large amount of temporary c...

AI Technical Summary

Problems solved by technology

[0004] The original design adopts the cast-in-place plan of the bracket, but the cast-in-place construction of the bracket is used, the box girder model, turnover materials and high; and the pier body is high, and the steel pipe column bracket system requires a large amount of temporary columns and section steel, plus foundation treatment Strip or pile foundations are more expensive

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