CN104878729B - Use the method that incorgruous double-layer prestressed steel construction bracket carries out groove body structure transformation - Google Patents
Use the method that incorgruous double-layer prestressed steel construction bracket carries out groove body structure transformation Download PDFInfo
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- CN104878729B CN104878729B CN201510200259.5A CN201510200259A CN104878729B CN 104878729 B CN104878729 B CN 104878729B CN 201510200259 A CN201510200259 A CN 201510200259A CN 104878729 B CN104878729 B CN 104878729B
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Abstract
The present invention relates to a kind of method using incorgruous double-layer prestressed steel construction bracket to carry out groove body structure transformation, belong to the method utilizing the structure of concrete and two groups of incorgruous prestressed cable connections that old aqueduct is transformed.Dig bracket and arrange seam, horizontally disposed non-bonding prestress tendon, arrange linking dowel, prop up groove body exterior sheathing, stretch-draw debugging and sealing off and covering anchorage, pour into a mould high-performance freeze thawing resistance self-compaction microlith early strength concrete, and wherein dowel is connected with the pre-buried spacing Interal fixation of incorgruous double-layer prestressed steel construction bracket, horizontal prestress anchorage cable two ends respectively with incorgruous double-layer prestressed steel construction bracket cross-under, drag-line and incorgruous double-layer prestressed steel construction bracket fixed anchoring.Utilize the present invention can recover aqueduct function with low cost and improve service life, and low-carbon (LC), environmental protection, economize on water, utilize waste material, save resource, low building waste, be therefore one of water conservancy industry green invention.
Description
Technical field
The method that the invention belongs to utilize the structure of concrete and two groups of incorgruous prestressed cable connections that old aqueduct is transformed.
Background technology
The transformation of armored concrete old aqueduct is the technical problem that Civil Engineering engineering is urgently to be resolved hurrily, simultaneously as most agricultural
Irrigating aqueduct building time relatively early, how making xoncrete structure not produce concentration of local tension is the difficulty in this technical problem
Topic, existing remodeling method takes to remove the method rebuild more, and shortcoming is costly, and the construction period is it cannot be guaranteed that water flowing, shadow
Ring downstream normal water supply, make troubles to agricultural production.
Summary of the invention
The present invention provides a kind of method using incorgruous double-layer prestressed steel construction bracket to carry out groove body structure transformation, to solve
The problem that the xoncrete structure certainly existed when old aqueduct is transformed produces concentration of local tension.
The present invention adopts the technical scheme that: comprise the following steps:
Dig bracket and arrange seam, horizontally disposed non-bonding prestress tendon, arrange and be connected dowel, a groove body exterior sheathing,
Draw debugging and sealing off and covering anchorage, pour into a mould high-performance freeze thawing resistance self-compaction microlith early strength concrete, wherein dowel and incorgruous double-layer prestressed steel
The pre-buried spacing Interal fixation of structure bracket connects, non-bonding prestress tendon two ends respectively with incorgruous double-layer prestressed steel construction
Bracket cross-under, drag-line and incorgruous double-layer prestressed steel construction bracket fixed anchoring, high-performance freeze thawing resistance self-compaction microlith is the strongest mixed
Solidifying soil is positioned at outside incorgruous double-layer prestressed steel construction bracket；
The structure of described incorgruous double-layer prestressed steel construction bracket is: pre-buried spacing steel plate is fixing even with spacing steel plate one
Connecing, welding supporting steel plate one is fixing with spacing steel plate one to be connected, and anchor ring one is fixing with spacing steel plate one to be connected, seamless steel pipe and weldering
Connecing the fixing connection of supporting steel plate one, spacing steel plate two is connected with pre-buried spacing Interal fixation, welding supporting steel plate two and spacing steel
Plate two is fixing to be connected, and anchor ring two is fixing with spacing steel plate two to be connected, and steel strand wires intermediate plate is connected with anchor ring two, on pre-buried spacing steel plate
There is reserved non-bonding prestress tendon through hole two, spacing steel plate one has reserved drag-line through hole one；
Described high-performance freeze thawing resistance self-compaction microlith early strength concrete includes the raw material of following ratio of weight and number:
Common portland cement PO42.5 700～1000 parts,
I grade 0～400 part of flyash,
Medium coarse sand 2000～3200 parts,
Stone 5～10mm 1500～3500 parts,
300 ~ 490 parts of water,
Complex material includes the raw material of following ratio of weight and number:
High-efficiency water-reducing agent of poly-carboxylic acid 60～150 parts,
Air entraining agent 0.03～3 parts,
Silicones polyethers emulsion 0.02～4 parts,
Thick plasticity-maintaining agent drops in low viscosity, viscosity 50 ~ 100cps 0～12 parts,
Naphthalenesulfonate formaldehyde condensation compound 0～12 parts,
Triethanolamine 0.03～11 parts.
The xoncrete structure that the present invention can solve to exist during the transformation of old aqueduct produces the problem of concentration of local tension, adopts
Duration, the transmission of incorgruous power system, the key issue of construction period water flowing can be effectively solved by the present invention.
The present invention is the technical problem that a kind of modern technologies solve to leave over engineering with material understanding deficiency in early days, with existing
Transform old structure for new construction and new material technology, do not affect former engineering properly functioning on the premise of complete construction, by little across
Degree aqueduct is modified as large span slant-pull structure, utilizes the performance of steel construction that two groups of incorgruous big pulling force are converted to pressure, shearing, it is ensured that
Xoncrete structure does not produce the bigger tension in local.Effectively promote it use function and its service life is greatly improved.
Non-bonding prestress tendon is constraint aqueduct and the main force support structure undertaking drag-line power.It is processed, making is the most logical
Crossing the boring of steel plate, welded, load system is all to realize by welding steel bracket transmission power.Cable sleeve is pacified at bracket
Just it is accurately positioned before dress, and and Plate Welding, it is ensured that do not conjugate during cast concrete.Vertical channel body direction, uses prestressing force
Restraint slot body, prestressing force active region uses high-performance freeze thawing resistance self-compaction pea gravel concreten, had both ensured easy construction, and had also met strong
Degree and life requirement.
The present invention processes for structurally-modified node, the big pulling force of two groups of incorgruous steel strand wires can be changed and is applied to
On xoncrete structure, make xoncrete structure that local tension not occur.For simple suspension cable structure relatively standard generally specialty knot
Structure reduces investment outlay more than 50%, and technology is simple and easy to do, and general designing unit all can design, the general equal energy of engineering construction enterprise
Construction.Without temporary project, there is no construction risk in flood season.
The present invention is to carry out according to the theory of green water management, utilizes the present invention can recover aqueduct function with low cost and carry
High service life, and low-carbon (LC), environmental protection, economize on water, utilize waste material, save resource, low building waste, be therefore the one of water conservancy industry
The green invention of item.
Accompanying drawing explanation
Fig. 1 is the incorgruous double-layer prestressed steel construction bracket structure load schematic diagram of the present invention；
Fig. 2 is layout drawing after the incorgruous double-layer prestressed steel construction bracket structure of the present invention is reeved；
Fig. 3 is the incorgruous double-layer prestressed steel construction bracket structure front view of the present invention；
Fig. 4 is the right view of Fig. 3；
Fig. 5 is the C-C sectional view of Fig. 4.
Detailed description of the invention
Embodiment 1
Dig bracket and arrange seam, horizontally disposed non-bonding prestress tendon 5, arrange and be connected dowel 2, groove body 3 exterior sheathing,
Stretch-draw debugging and sealing off and covering anchorage, pour into a mould high-performance freeze thawing resistance self-compaction microlith early strength concrete 4, and wherein dowel 2 and incorgruous bilayer in advance should
The pre-buried spacing steel plate 1001 of power steel construction bracket 1 is fixing to be connected, and non-bonding prestress tendon 5 two ends are pre-with incorgruous bilayer respectively
Stress steel construction bracket cross-under, drag-line 6 and incorgruous double-layer prestressed steel construction bracket fixed anchoring, high-performance freeze thawing resistance self-compaction
Microlith early strength concrete 4 is positioned at outside incorgruous double-layer prestressed steel construction bracket；
The structure of described incorgruous double-layer prestressed steel construction bracket 1 is: pre-buried spacing steel plate 1001 and spacing steel plate one
1002 fixing connections, welding supporting steel plate 1 is fixing with spacing steel plate one to be connected, anchor ring 1 and spacing steel plate one
1002 fixing connections, seamless steel pipe 1006 is fixing with welding supporting steel plate one to be connected, spacing steel plate 2 1004 and pre-buried spacing steel
Plate is fixing to be connected, and welding supporting steel plate 2 1005 is fixing with spacing steel plate two to be connected, and anchor ring 2 1007 is fixed with spacing steel plate two
Connecting, steel strand wires intermediate plate 1009 is connected with anchor ring 2 1007, and pre-buried spacing steel plate 1001 has reserved non-bonding prestress tendon
Through hole 2 1010, spacing steel plate 1 has reserved drag-line through hole 1；
Described high-performance freeze thawing resistance self-compaction microlith early strength concrete includes the raw material of following ratio of weight and number:
Common portland cement PO42.5 700kg,
Medium coarse sand 2000kg,
Stone 5～10mm 1500kg,
Water 300kg,
Complex material includes the raw material of following ratio of weight and number:
High-efficiency water-reducing agent of poly-carboxylic acid 60kg,
Air entraining agent 0.03kg,
Silicones polyethers emulsion 0.02kg,
Triethanolamine 0.03kg.
Embodiment 2
Dig bracket and arrange seam, horizontally disposed non-bonding prestress tendon 5, arrange and be connected dowel 2, groove body 3 exterior sheathing,
Stretch-draw debugging and sealing off and covering anchorage, pour into a mould high-performance freeze thawing resistance self-compaction microlith early strength concrete 4, and wherein dowel 2 and incorgruous bilayer in advance should
The pre-buried spacing steel plate 1001 of power steel construction bracket 1 is fixing to be connected, and non-bonding prestress tendon 5 two ends are pre-with incorgruous bilayer respectively
Stress steel construction bracket cross-under, drag-line 6 and incorgruous double-layer prestressed steel construction bracket fixed anchoring, high-performance freeze thawing resistance self-compaction
Microlith early strength concrete 4 is positioned at outside incorgruous double-layer prestressed steel construction bracket；
The structure of described incorgruous double-layer prestressed steel construction bracket 1 is: pre-buried spacing steel plate 1001 and spacing steel plate one
1002 fixing connections, welding supporting steel plate 1 is fixing with spacing steel plate one to be connected, anchor ring 1 and spacing steel plate one
1002 fixing connections, seamless steel pipe 1006 is fixing with welding supporting steel plate one to be connected, spacing steel plate 2 1004 and pre-buried spacing steel
Plate is fixing to be connected, and welding supporting steel plate 2 1005 is fixing with spacing steel plate two to be connected, and anchor ring 2 1007 is fixed with spacing steel plate two
Connecting, steel strand wires intermediate plate 1009 is connected with anchor ring 2 1007, and pre-buried spacing steel plate 1001 has reserved non-bonding prestress tendon
Through hole 2 1010, spacing steel plate 1 has and reserved pulls through via 1；
Described high-performance freeze thawing resistance self-compaction microlith early strength concrete includes the raw material of following ratio of weight and number:
Common portland cement PO42.5 850kg,
I grade of 200kg of flyash,
Medium coarse sand 2600kg,
Stone 5～10mm 2000kg,
Water 395kg,
Complex material includes the raw material of following ratio of weight and number:
High-efficiency water-reducing agent of poly-carboxylic acid 105kg,
Air entraining agent 1.51kg,
Silicones polyethers emulsion 2.01kg,
Low viscosity drop thick plasticity-maintaining agent, viscosity at 50 ~ 100cps 6kg,
Naphthalenesulfonate formaldehyde condensation compound 6kg,
Triethanolamine 5.51kg.
Embodiment 3
Dig bracket and arrange seam, horizontally disposed non-bonding prestress tendon 5, arrange and be connected dowel 2, groove body 3 exterior sheathing,
Stretch-draw debugging and sealing off and covering anchorage, pour into a mould high-performance freeze thawing resistance self-compaction microlith early strength concrete 4, and wherein dowel 2 and incorgruous bilayer in advance should
The pre-buried spacing steel plate 1001 of power steel construction bracket 1 is fixing to be connected, and non-bonding prestress tendon 5 two ends are pre-with incorgruous bilayer respectively
Stress steel construction bracket cross-under, drag-line 6 and incorgruous double-layer prestressed steel construction bracket fixed anchoring, high-performance freeze thawing resistance self-compaction
Microlith early strength concrete 4 is positioned at outside incorgruous double-layer prestressed steel construction bracket；
The structure of described incorgruous double-layer prestressed steel construction bracket 1 is: pre-buried spacing steel plate 1001 and spacing steel plate one
1002 fixing connections, welding supporting steel plate 1 is fixing with spacing steel plate one to be connected, anchor ring 1 and spacing steel plate one
1002 fixing connections, seamless steel pipe 1006 is fixing with welding supporting steel plate one to be connected, spacing steel plate 2 1004 and pre-buried spacing steel
Plate is fixing to be connected, and welding supporting steel plate 2 1005 is fixing with spacing steel plate two to be connected, and anchor ring 2 1007 is fixed with spacing steel plate two
Connecting, steel strand wires intermediate plate 1009 is connected with anchor ring 2 1007, and pre-buried spacing steel plate 1001 has reserved non-bonding prestress tendon
Through hole 2 1010, spacing steel plate 1 has reserved drag-line through hole 1；
Described high-performance freeze thawing resistance self-compaction microlith early strength concrete includes the raw material of following ratio of weight and number:
Common portland cement PO42.5 1000kg,
I grade of 400kg of flyash,
Medium coarse sand 3200kg,
Stone 5～10mm 3500kg,
Water 490kg,
Complex material includes the raw material of following ratio of weight and number:
High-efficiency water-reducing agent of poly-carboxylic acid 150kg,
Air entraining agent 3kg,
Silicones polyethers emulsion 4kg,
Low viscosity drop thick plasticity-maintaining agent, viscosity at 50 ~ 100cps 12kg,
Naphthalenesulfonate formaldehyde condensation compound 12kg,
Triethanolamine 11kg.
Claims (2)
1. one kind uses the method that incorgruous double-layer prestressed steel construction bracket carries out groove body structure transformation, it is characterised in that under including
Row step:
Digging bracket and arrange seam, horizontally disposed non-bonding prestress tendon, arrange linking dowel, a groove body exterior sheathing, stretch-draw is adjusted
Examination and sealing off and covering anchorage, pour into a mould high-performance freeze thawing resistance self-compaction microlith early strength concrete, wherein dowel and incorgruous double-layer prestressed steel construction
The pre-buried spacing Interal fixation of bracket connects, non-bonding prestress tendon two ends respectively with incorgruous double-layer prestressed steel construction bracket
Cross-under, drag-line and incorgruous double-layer prestressed steel construction bracket fixed anchoring, high-performance freeze thawing resistance self-compaction microlith early strength concrete
It is positioned at outside incorgruous double-layer prestressed steel construction bracket；
The structure of described incorgruous double-layer prestressed steel construction bracket is: pre-buried spacing steel plate is fixing with spacing steel plate one to be connected, weldering
Connecing that supporting steel plate one is fixing with spacing steel plate one to be connected, anchor ring one is fixed with spacing steel plate one and is connected, and seamless steel pipe props up with welding
Support steel plate one is fixing to be connected, and spacing steel plate two is connected with pre-buried spacing Interal fixation, welding supporting steel plate two and spacing steel plate two
Fixing connection, anchor ring two is fixing with spacing steel plate two to be connected, and steel strand wires intermediate plate is connected with anchor ring two, pre-buried spacing steel plate has pre-
Stay non-bonding prestress tendon to pass hole two, spacing steel plate one has reserved drag-line through hole one.
A kind of side using incorgruous double-layer prestressed steel construction bracket to carry out groove body structure transformation the most according to claim 1
Method, it is characterised in that described high-performance freeze thawing resistance self-compaction microlith early strength concrete includes the raw material of following ratio of weight and number:
Common portland cement PO42.5 700～1000 parts,
I grade 0～400 part of flyash,
Medium coarse sand 2000～3200 parts,
Stone 5～10mm 1500～3500 parts,
300 ~ 490 parts of water,
Complex material includes the raw material of following ratio of weight and number:
High-efficiency water-reducing agent of poly-carboxylic acid 60～150 parts,
Air entraining agent 0.03～3 parts,
Silicones polyethers emulsion 0.02～4 parts,
Thick plasticity-maintaining agent drops in low viscosity, viscosity 50 ~ 100cps 0～12 parts,
Naphthalenesulfonate formaldehyde condensation compound 0～12 parts,
Triethanolamine 0.03～11 parts.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510200259.5A CN104878729B (en) | 2015-04-27 | 2015-04-27 | Use the method that incorgruous double-layer prestressed steel construction bracket carries out groove body structure transformation |
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| CN201510200259.5A CN104878729B (en) | 2015-04-27 | 2015-04-27 | Use the method that incorgruous double-layer prestressed steel construction bracket carries out groove body structure transformation |
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| CN104878729A CN104878729A (en) | 2015-09-02 |
| CN104878729B true CN104878729B (en) | 2016-09-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307595A (en) * | 2008-07-09 | 2008-11-19 | 葛洲坝集团第一工程有限公司 | Large-sized aqueduct prestressing force construction method |
| CN202416260U (en) * | 2012-01-19 | 2012-09-05 | 贵州省水利水电勘测设计研究院 | Transverse prestressed reinforced structure of concrete aqueduct |
| CN202559307U (en) * | 2012-05-17 | 2012-11-28 | 中国葛洲坝集团股份有限公司 | Combined U-shaped aqueduct precast straining beam supporting device |
| CN203729282U (en) * | 2013-12-06 | 2014-07-23 | 湖南大学 | Reinforcing structure of thin wall type hydraulic structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11140849A (en) * | 1997-11-06 | 1999-05-25 | Maruishi Kogyo | Correction method and device for aqueduct bridge |
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2015
- 2015-04-27 CN CN201510200259.5A patent/CN104878729B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307595A (en) * | 2008-07-09 | 2008-11-19 | 葛洲坝集团第一工程有限公司 | Large-sized aqueduct prestressing force construction method |
| CN202416260U (en) * | 2012-01-19 | 2012-09-05 | 贵州省水利水电勘测设计研究院 | Transverse prestressed reinforced structure of concrete aqueduct |
| CN202559307U (en) * | 2012-05-17 | 2012-11-28 | 中国葛洲坝集团股份有限公司 | Combined U-shaped aqueduct precast straining beam supporting device |
| CN203729282U (en) * | 2013-12-06 | 2014-07-23 | 湖南大学 | Reinforcing structure of thin wall type hydraulic structure |
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