Cast-in-place oblique leg rigid frame bridge disc buckle type full framing and formwork construction method

A construction method and a technology of full support, which is applied to bridges, bridge parts, bridge materials, etc., can solve the problems of unclear force characteristics of the support system, frequent support accidents, and many safety hazards, so as to increase safety and reliability and ensure pouring Quality, easy processing effect

Active Publication Date: 2021-04-27
THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU
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  • Description
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  • Application Information

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Problems solved by technology

[0002] Slanted-leg rigid-frame bridges are a kind of sequential bridges that cross rivers and roads, and are generally constructed with fasteners and bowl-shaped brackets combined with steel pipe support methods. Larger reasons, especially fastener brackets lead to frequent bracket accidents, and the safety and overall structure stability of the buckle bracket is better to solve similar problems
[0003] Although the full hall support method of inclined-leg steel structu

Method used

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  • Cast-in-place oblique leg rigid frame bridge disc buckle type full framing and formwork construction method
  • Cast-in-place oblique leg rigid frame bridge disc buckle type full framing and formwork construction method

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Embodiment

[0032] A construction method of a cast-in-place slanted-leg rigid frame bridge with a plate buckle-type full hall bracket and formwork, refer to Figure 1-2 , the construction method comprises the steps of:

[0033] S1, 1) Cofferdam diversion: Straw bag cofferdams are used to build islands in the river to avoid polluting the river. Two DN1500 reinforced concrete flat-mouth pipes are buried as diversion connecting pipes on both sides of the river. The top of the pipe is 30cm below the concrete cushion, and one The length of the diversion connecting pipe is greater than the width of the bridge and considering the requirements of the working face and transportation road, if the buried depth of the pipe top is less than 70cm, the top of the pipe needs to be reinforced with C30 reinforced concrete;

[0034] 2) Foundation treatment: dredge the river bottom within 7m of the projected surface of the bridge + the north and south sides, and backfill in layers with 132cm thick 5% cement ...

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Abstract

The invention provides a cast-in-place oblique leg rigid frame bridge disc buckle type full framing and formwork construction method. The construction method comprises the following steps that S1, conducting offerdam diversion and foundation treatment; S2, erecting a support; S3, pouring inclined leg formwork reinforced concrete; S4, pouring girder template reinforced concrete; and S5, dismounting a formwork and the support. The method and the structure provided by the invention are reasonable in arrangement, and the safety in the pouring process of the inclined-leg rigid frame bridge can be improved.

Description

technical field [0001] The invention relates to the technical field of oblique-leg rigid-frame bridges, in particular to a construction method for cast-in-place oblique-leg rigid-frame bridges with disc buckle-type full hall brackets and templates. Background technique [0002] Slanted-leg rigid-frame bridges are a kind of sequential bridges that cross rivers and roads, and are generally constructed with fasteners and bowl-shaped brackets combined with steel pipe support methods. Larger reasons, especially fastener brackets lead to frequent bracket accidents, and the safety of the buckle bracket and the stability of the overall structure are better to solve similar problems. [0003] Although the full hall support method of inclined-leg steel structure bridges is commonly used, there are various kinds of supports at the positions of inclined legs during the construction process, and there are many shortcomings, resulting in unclear force characteristics of the support system...

Claims

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Application Information

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IPC IPC(8): E01D21/00E01D19/02E01D101/26
CPCE01D21/00E01D19/02E01D2101/26
Inventor 李华志何义陈志益周胜军全有维范小叶王紫玉许凡张建伟潘涛贾壮壮
Owner THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU
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