Cantilever beam vertical pipeline grouting double-pipe joint injection construction method

A double-pipe injection and cantilever beam technology, which is applied to bridges, bridge materials, bridge construction, etc., can solve the problems of long time-consuming tension and grouting, poor grouting compactness, etc.

Inactive Publication Date: 2019-01-22
CHINA RAILWAY SIXTH GROUP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a cantilever beam vertical pipeline grouting double-pipe simultaneous injection construction method to solve the technical problems of long stretching and grouting and poor grouting compactness in the cantilever beam construction process in the prior art

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  • Cantilever beam vertical pipeline grouting double-pipe joint injection construction method

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Embodiment Construction

[0037] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them.

[0038] The components of the embodiments of the invention generally described and shown in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0039] Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] In the description of the present invention, it should be noted that the...

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Abstract

The invention relates to the technical field of bridge construction, in particular to a cantilever beam vertical pipeline grouting double-pipe joint injection construction method. The construction method comprises the following steps: firstly, blanking the vertical prestressed tendon and the vertical prestressed casing; next, the vertical prestressed casing after blanking is processed into holes;next, the vertical prestressed tendon is assembled; next, the assembled vertical prestressed tendons are positioned and installed at the same time of the web reinforcement binding; next, the bottom oftwo adjacent vertical prestressed casing pipes are communicated; next, the vertical prestressed steel bar is tensioned; finally, the grout is pressed into the vertical prestressed casing. By adoptingthe construction method, the grouting in the vertical prestressed tendons can be made more dense and full, so that the bonding effect of the grouting concrete on the prestressed tendons is more prominent, the stress loss of the vertical prestressed tendons is avoided to a greater extent, and the cantilever beam concrete has better crack resistance.

Description

technical field [0001] The present application relates to the technical field of bridge construction, in particular to a cantilever beam vertical pipeline grouting double-pipe injection construction method. Background technique [0002] The cantilever beam vertical pipeline grouting construction method is generally to grout the prestressed pipelines one by one after the concrete pouring of the cantilever beam is completed and the prestressed tendons are stretched; however, this not only takes a long time to stretch and grout, but also The compactness is poor, and the prestressed tendons cannot be effectively protected from corrosion, which seriously affects the crack resistance of the bridge. Contents of the invention [0003] The purpose of the present invention is to provide a cantilever beam vertical pipeline grouting double-pipe injection construction method to solve the technical problems of long stretching and grouting and poor grouting compactness in the cantilever ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D21/10E01D101/28
CPCE01D21/00E01D21/10E01D2101/28
Inventor 宿进权周丹段君良温强商会江朱浩吴力湧王琦
Owner CHINA RAILWAY SIXTH GROUP
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