CN109518884A - Pressure-bearing device and processing method under a kind of combination type prestressed anchor - Google Patents
Pressure-bearing device and processing method under a kind of combination type prestressed anchor Download PDFInfo
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- CN109518884A CN109518884A CN201811360504.9A CN201811360504A CN109518884A CN 109518884 A CN109518884 A CN 109518884A CN 201811360504 A CN201811360504 A CN 201811360504A CN 109518884 A CN109518884 A CN 109518884A
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- diameter
- steel pipe
- diameter steel
- small
- pipe
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- 238000003672 processing method Methods 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 127
- 239000010959 steel Substances 0.000 claims abstract description 127
- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 29
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 7
- 238000004873 anchoring Methods 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract 4
- 238000003754 machining Methods 0.000 claims abstract 2
- 239000004567 concrete Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 229910001335 Galvanized steel Inorganic materials 0.000 claims 2
- 239000008397 galvanized steel Substances 0.000 claims 2
- 230000002028 premature Effects 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 9
- 239000004574 high-performance concrete Substances 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000007373 indentation Methods 0.000 description 3
- 238000003776 cleavage reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- -1 peg Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
本发明公开了一种组合式预应力锚下承压装置及加工方法，该承压装置为钢‑超高性能混凝土组合式预应力锚下承压装置，包括栓钉(1)、超高性能混凝土(2)、大直径钢管(3)、小直径钢管(4)、大直径管底(5)和找平钢板(6)；其加工方法包括大直径钢管(3)的加工、大直径管底(5)的加工与焊接、小直径钢管(4)的固定以及超高性能混凝土(2)的浇筑与养护。所述的组合式预应力锚下承压装置解决了现有的锚固系统锚下承压构造的钢筋密集布置、绑扎复杂、施工效率低下的问题，有利于方便施工，提高施工效率和锚固效率；此外，本发明提供的加工方法效率高，一致性好，加工稳定、可靠。
The present invention disclosed a combined pre -stirring anchor under pressure device and processing method. The pressure device is steel ‑ ultra -high -performance concrete combined prestressed anchor, including bolt nails (1), ultra -high performance Concrete (2), large diameter steel pipe (3), small diameter steel pipe (4), large diameter pipe bottom (5), and finding flat steel plate (6); its processing method includes processing of large diameter steel pipes (3) (5) Machining and welding, small diameter steel pipe (4) fixation and high -performance concrete (2) pouring and maintenance. The combined pre -staged anchor pressure device solves the problem of reinforced reinforcement layout, complicated and low construction efficiency of the existing anchor system under the anchor system, which is conducive to the convenience of construction, improving construction efficiency and anchoring efficiency; In addition, the processing methods provided by the present invention are high, good consistency, and stable and reliable processing.
Description
Technical field
The present invention relates to pressure-bearing device and processing methods under a kind of combination type prestressed anchor, belong to prestressed anchorage technology neck
Domain.
Background technique
Currently, prestressed group anchorage system is widely applied in engineering structure, and the stress under anchorage of anchorage zone is mainly by anchor pad
Concrete etc. undertakes after spiral bar, additional bar, anchor under plate, anchor.The construction of anchorage zone is complicated, construction space is limited, construction effect
Rate is lower.It is found in, the steel bar arrangement of existing anchorage zone is intensive, and bar spacing is minimum, to concreting after anchor
Compactness has larger impact, and aggregate is caused to be not easy to flow to anchorage zone.In practical projects, the aggregate of anchorage zone concrete is inclined
Less, less than normal, slurry amount is bigger than normal, and the more normal concrete of the elasticity modulus of concrete is low under anchor.Therefore, when prestressed stretch-draw,
Anchorage zone is easy to appear crushing and cleavage fracture, reduces the safety and reliability of structure.
The compression strength and base steel of ultra-high performance concrete (UHPC) are originally in same level, and flexural tensile strength may be up to
30MPa, elasticity modulus is between 40-60GPa, and in addition to this UHPC has very high durability.Existing research discovery
The cementitiousness of UHPC and steel is the 2 times or more of the cementitiousness of normal concrete and steel, therefore combines steel with UHPC and both may be used
To reduce the weight of structure, and its cost can be reduced.
Summary of the invention
Technical problem: the object of the present invention is to provide pressure-bearing device and processing method under a kind of combination type prestressed anchor, solutions
Installation is complicated in bring work progress when pressure-bearing device is applied under certainly traditional prestressed anchor, construction efficiency is low, structure is reliable
The problems such as property is low.
Technical solution: the present invention provides pressure-bearing device under a kind of combination type prestressed anchor, which is steel-superelevation
Pressure-bearing device under the combination type prestressed anchor of performance concrete, including peg, ultra-high performance concrete, large diameter steel pipe, minor diameter
Steel pipe, large diameter pipe bottom and levelling steel plate, wherein minor-diameter steel-tube is nested in inside large diameter steel pipe, and large diameter steel pipe and small
Poured ultra-high performance concrete between diameter steel pipe, guarantee ultra-high performance concrete and large diameter steel pipe and minor-diameter steel-tube it
Between bond it is good；Peg is fixed on the outside face of large diameter steel pipe, and large diameter pipe bottom and levelling steel plate are located at Large-diameter Steel
The bottom and top of pipe.
Wherein:
The large diameter steel pipe is coating steel pipe, and steel pipe is with a thickness of 3~5mm, and its bottom is welded with large diameter pipe bottom；
The minor-diameter steel-tube is coating steel pipe.
The minor-diameter steel-tube is nested in inside large diameter steel pipe, and minor-diameter steel-tube is coaxially nested with large diameter steel pipe,
And minor-diameter steel-tube is identical as the length of large diameter steel pipe.
The minor-diameter steel-tube is mutually welded with large diameter pipe bottom, and large diameter pipe bottom correspond to minor-diameter steel-tube position it is pre-
There are round hole, the diameter of round hole and the overall diameter of minor-diameter steel-tube are identical.
The peg is fixed on the outside face of large diameter steel pipe, and the material of peg is high-strength steel, and fixed form is weldering
It connects, and arrangement of the peg in the outside face of large diameter steel pipe is equally spaced using non-, along levelling steel plate to major diameter
Tube bottom direction spacing becomes larger.
The diameter of the levelling steel plate is less than interior diameter, the overall diameter greater than minor-diameter steel-tube of large diameter steel pipe, and
With minor-diameter steel-tube corresponding position among levelling steel plate, there are the circular holes equal with the overall diameter of minor-diameter steel-tube.
The intensity of the ultra-high performance concrete is greater than 160MPa.
The present invention also provides a kind of processing method of pressure-bearing device under combination type prestressed anchor, this method includes following step
It is rapid:
1) large diameter steel pipe is processed, and in the outside face weld stud of large diameter steel pipe；
2) large diameter pipe back welding is connected to the bottom end of large diameter steel pipe；
3) minor-diameter steel-tube is nested with large diameter steel pipe coaxial line, two sides alignment, and by minor-diameter steel-tube and major diameter
Tube bottom is fixed together；
4) ultra-high performance concrete is poured between minor-diameter steel-tube and large diameter steel pipe, after jolt ramming to pour top surface carry out
Smooth plastering processing；
5) indentation of levelling steel plate is poured into top surface after ultra-high performance concrete initial set, obtains the component poured；
6) pressure-bearing device under the combination type prestressed anchor will be obtained after the component conservation poured.
Wherein:
The indentation of levelling steel plate is poured into top surface after the initial set of ultra-high performance concrete described in step 5), is referred to levelling steel plate
Top surface and large diameter steel pipe either flush, and levelling steel plate integral level.
Pressure-bearing device under the combination type prestressed anchor will be obtained after the component conservation poured described in step 6), support
The condition of shield are as follows: temperature >=70 DEG C, humidity >=95%, steam curing 7~28 days.
The utility model has the advantages that compared with prior art, present invention has the advantage that
Firstly, the present invention saves the anchor plate and anchor of traditional anchor system on the basis of giving full play to UHPC material property
Rear screw muscle keeps Path of Force Transfer after anchor clear, is convenient for anchorage zone design, improves anchoring efficiency；
Secondly, distributing bar is intensively arranged, binds complicated, construction effect after the present invention can solve existing anchor system anchor
The low problem of rate, improves construction efficiency to a certain extent；
Finally, present invention can be suitably applied to the anchoring of prestressed structure, there is wide applicability and very high reliability, and
The preparation method of pressure-bearing device is high-efficient under combination type prestressed anchor provided by the invention, and consistency is good, and processing stablizes, is reliable.
Detailed description of the invention
Fig. 1 is the top view of pressure-bearing device under combination type prestressed anchor provided by the invention；
Fig. 2 is the left view of pressure-bearing device under combination type prestressed anchor provided by the invention；
Have in figure: 1- peg, 2- ultra-high performance concrete, 3- large diameter steel pipe, 4- minor-diameter steel-tube, 5- large diameter pipe bottom
With the levelling steel plate of 6-.
Specific embodiment
To facilitate the understanding of the structure of the invention, it is illustrated with reference to the accompanying drawings and embodiments.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Embodiment 1:
As shown in Figure 1 and Figure 2, pressure-bearing device under a kind of combination type prestressed anchor, the pressure-bearing device are mixed for steel-very-high performance
Pressure-bearing device under the solidifying box-like prestressed anchor of local soil type, including peg 1, ultra-high performance concrete 2, large diameter steel pipe 3, minor-diameter steel-tube
4, large diameter pipe bottom 5 and levelling steel plate 6, wherein minor-diameter steel-tube 4 is coaxial nested with large diameter steel pipe 3, and minor-diameter steel-tube 4 with
The length of large diameter steel pipe 3 is identical；Ultra-high performance concrete 2 has been poured between large diameter steel pipe 3 and minor-diameter steel-tube 4, has been guaranteed
It is bonded between ultra-high performance concrete and large diameter steel pipe and minor-diameter steel-tube good；Peg 1 is fixed on the outer of large diameter steel pipe 3
Side face, large diameter pipe bottom 5 and levelling steel plate 6 are located at the bottom and top of large diameter steel pipe 3.
The large diameter steel pipe 3 is coating steel pipe, and steel pipe is with a thickness of 3~5mm, and its bottom is welded with large diameter pipe bottom
5。
The minor-diameter steel-tube 4 is welded with 5 phase of large diameter pipe bottom, and the position of the corresponding minor-diameter steel-tube 4 in large diameter pipe bottom 5
It sets and is reserved with round hole, the diameter of round hole is identical as the overall diameter of minor-diameter steel-tube 3.
The minor-diameter steel-tube 4 is coating steel pipe.
The peg 1 is fixed on the outside face of large diameter steel pipe 3, and the material of peg 1 is high-strength steel, and fixed form is
Welding, and arrangement of the peg 1 in the outside face of large diameter steel pipe 3 is equally spaced using non-, along levelling steel plate 6 to big
5 direction spacing of diameter tube bottom becomes larger.
The diameter of the levelling steel plate 6 is less than the interior diameter of large diameter steel pipe 3, greater than the overall diameter of minor-diameter steel-tube 4,
And with minor-diameter steel-tube corresponding position among levelling steel plate 6, there are the circular holes equal with the overall diameter of minor-diameter steel-tube 4.
The intensity of the ultra-high performance concrete 2 is greater than 160MPa.
The processing method of pressure-bearing device under a kind of combination type prestressed anchor, method includes the following steps:
(1) large diameter steel pipe 3 for processing different-diameter, then in the outside face weld stud 1 of large diameter steel pipe 3；
(2) 5mm steel plate is processed into the round large diameter pipe bottom 5 with large diameter steel pipe 3 with diameter, then again in major diameter
A circular hole with 4 same diameter of minor-diameter steel-tube is dug at 5 center of tube bottom, and large diameter pipe bottom 5 is finally welded in large diameter steel pipe 3
Bottom end；
(3) by the concentric placement of minor-diameter steel-tube 4 and large diameter steel pipe 3, two sides alignment, finally by minor-diameter steel-tube 4 and greatly
Diameter tube bottom 5 is welded and fixed together；
(4) circular levelling steel plate 6 is processed with the steel plate of 10mm, the diameter of levelling steel plate is determined according to large diameter steel pipe 3；
(5) steel tubing portions processed are kept upright, and UHPC 2 is poured, and UHPC 2 is poured and entire component is put into vibration after expiring
Then jolt ramming on platform carries out smooth plastering processing to pouring top surface；
(6) indentation of levelling steel plate 6 is poured into top surface after 2 initial set of UHPC, guarantees top surface and the Large-diameter Steel of levelling steel plate 6
The either flush of pipe 3, while guaranteeing levelling 6 integral level of steel plate, obtain the component poured；
(7) component poured is put under conditions of temperature >=70 DEG C, humidity >=95% steam curing 7~28 days.
It should be further noted that specific embodiment described in the present invention is only spiritual institute according to the present invention
The illustration of work.Those skilled in the art can do described specific embodiment various
Modify or supplement, but without departing from the spirit or beyond the scope defined by the appended claims of the utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811360504.9A CN109518884B (en) | 2018-11-15 | 2018-11-15 | Combined type prestressed anchor lower pressure-bearing device and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811360504.9A CN109518884B (en) | 2018-11-15 | 2018-11-15 | Combined type prestressed anchor lower pressure-bearing device and processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109518884A true CN109518884A (en) | 2019-03-26 |
| CN109518884B CN109518884B (en) | 2021-02-09 |
Family
ID=65778074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811360504.9A Expired - Fee Related CN109518884B (en) | 2018-11-15 | 2018-11-15 | Combined type prestressed anchor lower pressure-bearing device and processing method |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924595A (en) * | 2019-12-31 | 2020-03-27 | 湖南大学 | Steel bar anchoring joint and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429767A (en) * | 2008-11-20 | 2009-05-13 | 国鼎(南通)管桩有限公司 | Pretensioned prestressing steel pipe concrete pipe pile and producing method thereof |
| CN201665956U (en) * | 2010-03-08 | 2010-12-08 | 东南大学 | Assembled Cable Structure of Prestressed Parallel Steel Strands in Annular Closed Steel Tubes |
| KR101146586B1 (en) * | 2009-12-08 | 2012-05-16 | 한국건설기술연구원 | UHPC Anchor Block for Prestressed Tendon and Prestressed Concrete Member having such UHPC Ancho Block |
| CN104234324A (en) * | 2014-09-22 | 2014-12-24 | 郑州大学 | Novel FRP rib threaded adhesive type anchorage device and mounting method of anchorage device |
| CN108130905A (en) * | 2018-02-23 | 2018-06-08 | 中铁十局集团有限公司 | Steel-pipe pile |
| CN108360748A (en) * | 2018-01-18 | 2018-08-03 | 湖北工程学院 | A kind of composite steel tube UHPC damping stubs |
-
2018
- 2018-11-15 CN CN201811360504.9A patent/CN109518884B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101429767A (en) * | 2008-11-20 | 2009-05-13 | 国鼎(南通)管桩有限公司 | Pretensioned prestressing steel pipe concrete pipe pile and producing method thereof |
| KR101146586B1 (en) * | 2009-12-08 | 2012-05-16 | 한국건설기술연구원 | UHPC Anchor Block for Prestressed Tendon and Prestressed Concrete Member having such UHPC Ancho Block |
| CN201665956U (en) * | 2010-03-08 | 2010-12-08 | 东南大学 | Assembled Cable Structure of Prestressed Parallel Steel Strands in Annular Closed Steel Tubes |
| CN104234324A (en) * | 2014-09-22 | 2014-12-24 | 郑州大学 | Novel FRP rib threaded adhesive type anchorage device and mounting method of anchorage device |
| CN108360748A (en) * | 2018-01-18 | 2018-08-03 | 湖北工程学院 | A kind of composite steel tube UHPC damping stubs |
| CN108130905A (en) * | 2018-02-23 | 2018-06-08 | 中铁十局集团有限公司 | Steel-pipe pile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924595A (en) * | 2019-12-31 | 2020-03-27 | 湖南大学 | Steel bar anchoring joint and construction method thereof |
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| Publication number | Publication date |
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| CN109518884B (en) | 2021-02-09 |
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Granted publication date: 20210209 |