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Prefabricated post-tensioned simply supported T-beam concrete formwork support and its installation process for railway bridges

An installation process and formwork technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of pulling up formwork occupying the bridge deck, building formwork occupying the ground, etc.

Active Publication Date: 2016-02-17
大连鑫硕建筑劳务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a prefabricated post-tensioned simply supported T-beam concrete injection formwork support for railway bridges and its installation process, which solves the problems that the building formwork occupies the ground and the pull-up formwork occupies the bridge deck

Method used

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  • Prefabricated post-tensioned simply supported T-beam concrete formwork support and its installation process for railway bridges
  • Prefabricated post-tensioned simply supported T-beam concrete formwork support and its installation process for railway bridges
  • Prefabricated post-tensioned simply supported T-beam concrete formwork support and its installation process for railway bridges

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Such as figure 1 , figure 2 As shown, the prefabricated post-tensioned simply supported T beam concrete injection formwork support for the railway bridge includes pre-embedded reinforcement 3, formwork 5, triangular support 6, lower support rod 8 and upper tie rod 16. The pre-embedded reinforcement 3 is a U-shaped structure, and several pre-embedded The opening end of the buried rib 3 is buried in the upper flange of the main beam 1, the bottom surface of the template 5 is provided with an inner rib 4 and an outer rib 17, the inner rib 4 is parallel to the outer rib 17, and the inner rib 4 is The template 5 is provided with several bolt holes, and several hook-type bolts 2 are hooked on the closed ends of the embedded ribs 3 and passed through the bolt holes of the template 5 to be fixed with nuts. 6 crossbar welding; one end of the pull-up rod 16 is connected to the vertical bar of the tripod 6 through the support, and the other end is connected to the open end of th...

Embodiment 2

[0023] Such as figure 1 , figure 2 As shown, the prefabricated post-tensioned simply supported T beam concrete injection formwork support for the railway bridge includes pre-embedded reinforcement 3, formwork 5, triangular support 6, lower support rod 8 and upper tie rod 16. The pre-embedded reinforcement 3 is a U-shaped structure, and several pre-embedded The opening end of the buried rib 3 is buried in the upper flange of the main beam 1, the bottom surface of the template 5 is provided with an inner rib 4 and an outer rib 17, the inner rib 4 is parallel to the outer rib 17, and the inner rib 4 is The template 5 is provided with several bolt holes, and several hook-type bolts 2 are hooked on the closed ends of the embedded ribs 3 and passed through the bolt holes of the template 5 to be fixed with nuts. 6 crossbar welding; one end of the pull-up rod 16 is connected to the vertical bar of the tripod 6 through the support, and the other end is connected to the open end of th...

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Abstract

The invention discloses a prefabricated post-tensioning-method simply-supported T-girder concrete injection formwork support of a railway bridge. The opening ends of a plurality of embedded ribs are buried in an upper flange of the girder, a plurality of hook type bolts are hooked at the closing ends of the embedded ribs and penetrate bolt holes of a formwork to be fixed by nuts, and the outer side of an outer reinforcing rib is welded with transverse rods of a plurality of tripods. One end of an upper pull rod is connected with vertical rods of the tripods by a support, and the other end of the upper pull rod is connected with the opening ends of the embedded ribs. One ends of lower support rods between two sides of the formwork are connected with the inner side of the outer reinforcing rib through the support, and the other ends of the same are disposed on a lower flange of the girder through support legs. The support legs are matched with the lower flange in the bending degree. A prefabricated post-tensioning-method simply-supported T-girder concrete injection formwork is of structure of pulling from the upper side and supporting from the lower side, and the formwork support is mounted by an excavator with a modified bucket, so that the prefabricated post-tensioning-method simply-supported T-girder concrete injection formwork support is simple in structure, convenient to operate and time and labor saving, traffic under the bridge is unaffected, bridge deck space is not occupied to impact running of girder transporting vehicles and other cross constructions.

Description

technical field [0001] The invention relates to an on-site construction device and technology of a passenger-cargo railway bridge with a speed of 200 kilometers per hour, in particular to a formwork bracket for concrete pouring of simply supported T-beams of a prefabricated post-tensioned concrete railway bridge and an installation technology thereof. Background technique [0002] For a 200-kilometer-per-hour passenger-cargo railway bridge, the simply supported T-beam used to set up the sound barrier needs to be cast on-site outside the prefabricated side frame of the main girder, and its name is "prefabricated post-tensioned prestressed concrete railway Simply supported T-beam bridge”, the steel formwork needs to be fixed when pouring concrete. Usually, the way to fix the formwork is to build scaffolding on the ground under the bridge, or to use the way of pulling up the formwork on the bridge deck of the main girder. However, building scaffolding on the ground will often a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 刘俊
Owner 大连鑫硕建筑劳务有限公司