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Method for adopting opposite-direction bilayer prestressed steel structure bracket to modify aqueduct body structure

A technology for prestressed steel and structural transformation, applied in applications, artificial waterways, buildings, etc., to achieve the effect of saving investment and simple technology

Active Publication Date: 2015-09-02
吉林省银河水利水电新技术设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for transforming the structure of the aqueduct body by adopting the opposite direction double-layer prestressed steel structure corbels, so as to solve the problem of local concentrated tensile stress in the concrete structure existing in the reconstruction of the old aqueduct

Method used

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  • Method for adopting opposite-direction bilayer prestressed steel structure bracket to modify aqueduct body structure
  • Method for adopting opposite-direction bilayer prestressed steel structure bracket to modify aqueduct body structure
  • Method for adopting opposite-direction bilayer prestressed steel structure bracket to modify aqueduct body structure

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Experimental program
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Effect test

Embodiment 1

[0031] Excavate corbel arrangement joints, arrange unbonded prestressed anchor cables 5 horizontally, arrange connecting anchor reinforcement 2, support channel body 3 outer formwork, tension adjustment and anchor sealing, pour high-performance freeze-thaw resistant self-compacting fine stone early-strength concrete 4. The anchor bar 2 is fixedly connected to the pre-embedded limit steel plate 1001 of the opposite direction double-layer prestressed steel structure corbel 1, and the two ends of the horizontal prestressed anchor cable 5 are connected to the different direction double-layer prestressed steel structure corbel respectively. , the cable 6 is fixedly anchored to the corbel of the double-layer prestressed steel structure in different directions, and the high-performance freeze-thaw resistant self-compacting fine stone early-strength concrete 4 is located outside the corbel of the double-layer prestressed steel structure in different directions;

[0032] The structure o...

Embodiment 2

[0044] Excavate corbel arrangement joints, arrange unbonded prestressed anchor cables 5 horizontally, arrange connecting anchor reinforcement 2, support channel body 3 outer formwork, tension adjustment and anchor sealing, pour high-performance freeze-thaw resistant self-compacting fine stone early-strength concrete 4. The anchor bar 2 is fixedly connected to the pre-embedded limit steel plate 1001 of the opposite direction double-layer prestressed steel structure corbel 1, and the two ends of the horizontal prestressed anchor cable 5 are connected to the different direction double-layer prestressed steel structure corbel respectively. , the cable 6 is fixedly anchored to the corbel of the double-layer prestressed steel structure in different directions, and the high-performance freeze-thaw resistant self-compacting fine stone early-strength concrete 4 is located outside the corbel of the double-layer prestressed steel structure in different directions;

[0045] The structure o...

Embodiment 3

[0060] Excavate corbel arrangement joints, arrange unbonded prestressed anchor cables 5 horizontally, arrange connecting anchor reinforcement 2, support channel body 3 outer formwork, tension adjustment and anchor sealing, pour high-performance freeze-thaw resistant self-compacting fine stone early-strength concrete 4. The anchor bar 2 is fixedly connected to the pre-embedded limit steel plate 1001 of the opposite direction double-layer prestressed steel structure corbel 1, and the two ends of the horizontal prestressed anchor cable 5 are connected to the different direction double-layer prestressed steel structure corbel respectively. , the cable 6 is fixedly anchored to the corbel of the double-layer prestressed steel structure in different directions, and the high-performance freeze-thaw resistant self-compacting fine stone early-strength concrete 4 is located outside the corbel of the double-layer prestressed steel structure in different directions;

[0061] The structure o...

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Abstract

The invention relates to a method for adopting an opposite-direction bilayer prestressed steel structure bracket to modify an aqueduct body structure and belongs to a method for modifying an old aqueduct with concrete and a structure in connection of two groups of opposite-direction prestressed cables. The method includes: digging a bracket arrangement seam, horizontally arranging unbonded prestressed anchor cables, arranging connection anchor bars, setting up an aqueduct-body external formwork, performing tensioning debugging and anchor seal, and casting high-performance frost-thawing-resistant self-compacting fine-aggregate early strength concrete, wherein the anchor bars are fixedly connected with an embedded limit steel plate of the opposite-direction bilayer prestressed steel structure bracket, two ends of the horizontal prestressed anchor cables are respectively penetratingly connected with the opposite-direction bilayer prestressed steel structure bracket, and the cables are fixedly anchored to the opposite-direction bilayer prestressed steel structure bracket. With the method, the function of the aqueduct can be recovered at low cost, and service life is prolonged. Besides, the method is low carbon, environment friendly, water saving, capable of utilizing waste, resource saving and less in construction waste, thereby being a green invention in the water conservancy industry.

Description

technical field [0001] The invention belongs to a method for transforming an old aqueduct by using a structure connected by concrete and two groups of different-direction prestressed cables. Background technique [0002] The reconstruction of old reinforced concrete aqueducts is a technical problem to be solved urgently in water conservancy projects. At the same time, because most agricultural irrigation aqueducts were constructed earlier, how to prevent the concrete structure from producing local concentrated tensile stress is a difficult problem in this technical problem. Most of the existing reconstruction methods adopt The disadvantage of demolishing and rebuilding is that the cost is high, and the water flow cannot be guaranteed during the construction period, which will affect the normal water supply downstream and bring inconvenience to agricultural production. Contents of the invention [0003] The invention provides a method for transforming the aqueduct body stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B13/00E02B5/08C04B28/04
Inventor 郑铎杨金良周继元郑旻文
Owner 吉林省银河水利水电新技术设计有限公司
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