Steel-concrete composite girder construction technology striding current lines and being parallel to existing lines

Abstract

The invention discloses a steel-concrete composite girder construction technology striding over current line and being parallel to existing lines, which comprises the flowing steps: firstly, erecting a supporting falsework, wherein the supporting falsework comprises a plurality of temporary buttresses which are distributed between two buttresses from left to right, and the distribution positions of the plurality of temporary buttresses respectively correspond to the connection position of two adjacent steel grinder sections of a steel grinder body in a construction steel-concrete composite girder; secondly, hoisting the steel grinder sections, wherein a plurality of steel grinder sections constituting the steel grinder body are hoisted in place one by one; thirdly, splicing the steel grinder body, wherein splicing is conducted on the steel grinder body after linetype adjustment and camber adjustment; fourthly, converting the system; fifthly, conducting concrete pouring construction on a ballast channel plate; and sixthly, detaching the supporting falsework. The steel-concrete composite girder construction technology has reasonable design, convenience in the construction, low investment cost, good using effect, high construction efficiency, short construction period and low safety risk, and the adopted supporting falsework has a simple structure and high satiability and is economical and practical.

Description

technical field [0001] The invention belongs to the technical field of steel-concrete combined beam construction, and in particular relates to a construction technique for steel-concrete combined beams spanning existing lines and running parallel to existing lines. Background technique [0002] Such as figure 2 As shown, the reconstruction of the second line project of the Xiangyu Line of the railway (that is, the new line under construction) from Ankang to Liangjiaba section, YD1K463+927.56 Houhe No. 10 Right Line Bridge has a total of 16 spans and a total length of 507 meters. Proximity to the exit end of Wanyuan Railway Station. The new line runs parallel to the existing Houhe No. 10 Bridge (the existing railway operation line 2, referred to as the existing line), and the distance between the two lines is 5.50m-5.52m. During the actual construction, the 1st to 10th spans of the new line pass through the main urban area of ​​Wanyuan City, Sichuan Province. Among them, th...

AI Technical Summary

Problems solved by technology

[0003] Nowadays, there are few steel-concrete composite beam construction projects that cross the existing line and run parallel to the existing line, and the construction process is complicated to varying degrees, requiring a short construction period, high safety risks, and large interference between construction and operation. And other construction characteristics, so the construction is very difficult

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