Railroad business line box bridge extension construction method

A construction method and wire box technology, which are applied in the construction field of long box-shaped bridges on railway business lines, can solve the problems of safety hazards in protective measures, difficulty in dismantling the eight-shaped wing wall, and large amount of protective engineering, so as to achieve high construction efficiency and short construction period , The effect of low input cost

A construction method and wire box technology, which are applied in the construction field of long box-shaped bridges on railway business lines, can solve the problems of safety hazards in protective measures, difficulty in dismantling the eight-shaped wing wall, and large amount of protective engineering, so as to achieve high construction efficiency and short construction period , The effect of low input cost

CN109537474AInactive Publication Date: 2019-03-29CHINA RAILWAY FIRST GRP CO LTD
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  • Railroad business line box bridge extension construction method
  • Railroad business line box bridge extension construction method
  • Railroad business line box bridge extension construction method

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Embodiment Construction

[0067] like figure 1 and figure 2 Shown is a long construction method for box-shaped bridges on railway business lines, the splayed wing walls include two symmetrically arranged retaining walls, and the two retaining walls are respectively the first retaining wall 1 and the second retaining wall The earth wall 2, the first retaining wall 1 and the second retaining wall 2 are fixedly connected to both sides of the main body foundation 3 of the box bridge, comprising the following steps:

[0068] Step 1. Layout and drilling of drilling points:

[0069] Step 101, arranging a plurality of first drilling points at intervals on the top of the first retaining wall 1, the connection line of the plurality of first drilling points and the side edge of the main body foundation 3 of the box-shaped bridge Extension cord overlap;

[0070] Step 102, arranging a plurality of second drilling points at intervals on the top of the second retaining wall 2, the connection line of the plurality...

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Abstract

The invention discloses a railroad business line box bridge extension construction method. The railroad business line box bridge extension construction method comprises the steps of 1, arrangement ofdrilling points and drilling; 2, expansion slurry injection; 3, removal of concrete on the inner side of a flare wing wall; 4, extension of a railroad business line box bridge. In the method, part ofthe flare wing wall of the box bridge is removed, the remaining part of the flare wing wall has a supporting effect on a roadbed behind the flare wing wall, the basic concrete structure of the flare wing wall can serve as the basis of a box bridge body which is about to be extended later, the construction period is short, the construction quality is ensured, the problem about the safety and protection of a business line is solved, the protection engineering quantity is greatly reduced, and the protection construction process is simplified.

Description

technical field [0001] The invention belongs to the technical field of construction of box-shaped bridge lengths, and in particular relates to a construction method for box-shaped bridge lengths of railway business lines. Background technique [0002] In railway construction, it is often necessary to extend the existing box-shaped bridges due to the addition of the second line or the reconstruction of the station yard. During the construction of the box-shaped bridges, the adjacent business lines are in normal operation. Since the long construction of the box bridge may affect the stability of the existing ballast bed, the protection of the business line during the construction is very important. [0003] At present, the main reinforcement and protection construction schemes for the long construction of box bridges in business lines in China are digging piles with reinforced concrete slab protection, steel sheet pile protection, digging piles plus steel sheet pile protection...

Claims

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Application Information

Patent Timeline
29 Mar 2019
Publication
CN109537474A
IPC
E01D22/00; E01C3/04; E01D101/24
CPC
E01C3/04; E01D22/00; E01D2101/24
Inventors
张林; 董高峰