CN208440996U - A kind of novel inlet pipe - Google Patents
A kind of novel inlet pipe Download PDFInfo
- Publication number
- CN208440996U CN208440996U CN201821081033.3U CN201821081033U CN208440996U CN 208440996 U CN208440996 U CN 208440996U CN 201821081033 U CN201821081033 U CN 201821081033U CN 208440996 U CN208440996 U CN 208440996U
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- China
- Prior art keywords
- anchor plate
- steel pipe
- seamless steel
- jack
- strand wires
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Abstract
The utility model discloses a kind of novel inlet pipes, it includes seamless steel pipe；The bottom of seamless steel pipe is equipped with and inlet pipe；Inlet pipe is equipped with the wired hose being secured to；The top of seamless steel pipe is equipped with anchor plate；The center point of anchor plate is equipped with jack, and the outer diameter grafting of the internal diameter of jack and seamless steel pipe；Anchor plate is equipped with grout outlet, and grout outlet is connected to the jack of anchor plate the center point；Anchor plate fixes connection by the limit shelves being equipped at the top of seamless steel pipe；The internal diameter of seamless steel pipe is equipped with the steel strand wires of several and its interspersed connection；The both ends of seamless steel pipe are stretched out at the both ends of steel strand wires, and the both ends of steel strand wires are fixedly connected by bolt with anchor slab.The utility model production is simple at low cost, and operating process is convenient.Bearing capacity is strong, can bear larger pressure and accelerate mud jacking process.Limiter can position anchor plate base opening coordinate and to guarantee anchor plate center line consistent with box girder web Impact direction, and guarantee that anchor plate will not slip.
Description
Technical field
The utility model belongs to municipal construction technical field of tools, and in particular to one kind is applied for large-span concrete box beam
The novel inlet pipe of work.
Background technique
Currently, it is existing that the biggish concrete box girder of span has constantly discovered cracking in webs in recent years in bridge construction process
As often will appear a plurality of vertical or oblique shear crack while the weak part in web occur, some even extends to box beam
Top plate and bottom plate, the integrally-built anti-torsion of bridge, shearing resistance, span ability or even structural bearing can be made by box girder web crackle occur
Power is declined, and the safety of bridge is seriously endangered.
The reason of box girder web cracks is extremely complex, from the point of view of Web cracks, shows on oblique section anti-principal tensile stress not
It is enough.Therefore more and more large-span concrete box beams arrange vertical prestressing into slurry fairlead in web.
Traditional low retraction vertical prestressing into slurry fairlead using will into slurry steel pipe be embedded in box beam underplate concrete
Bottom, fairlead are drawn by vertical duct base opening, are not easy to reinforce in this way；When casting concrete into slurry steel pipe easily occurs slip thus
Slurry-feeding hole is caused to block.Traditional vertical prestressing is into slurry fairlead, and loss of prestress can reach 30% after tensioning, to box girder web
Cracking can play a certain protective role, but effect is not ideal enough.
Summary of the invention
The purpose of this utility model is that the technology of vertical prestressing supporting rib protective effect difference built in the above-mentioned box beam of solution is asked
Topic, provides a kind of novel inlet pipe, with overcome the deficiencies in the prior art.
In order to achieve the above object, the technical solution adopted in the utility model is:
A kind of novel inlet pipe, it includes seamless steel pipe；
The bottom of the seamless steel pipe is equipped with the inlet pipe being connected to its mutual right angle welding；The inlet pipe be equipped with
Its wired hose being mutually sleeved and fixed；
The top of the seamless steel pipe is equipped with anchor plate；The center point of the anchor plate is equipped with jack, and the internal diameter of jack
It is corresponding with the outer diameter of seamless steel pipe and be mutually inserted；The anchor plate is equipped with grout outlet, and grout outlet and anchor plate the center point
Jack be interconnected；The anchor plate fixes connection by the limit shelves being equipped at the top of seamless steel pipe；
The internal diameter of the seamless steel pipe is equipped with the steel strand wires of several and its mutually interspersed connection；The both ends of the steel strand wires
The both ends of seamless steel pipe are stretched out, and the both ends of steel strand wires are mutually permanently connected by bolt and anchor slab.
The beneficial effects of the utility model are:
1, production is simple at low cost, and operating process is convenient.
2, bearing capacity is strong, can bear larger pressure and accelerate mud jacking process.
3, when anchor plate and vertical duct connect, limiter can position anchor plate base opening coordinate and guarantee anchor plate
Center line is consistent with box girder web Impact direction, and guarantees that anchor plate will not slip.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the utility model.
Attached drawing 2 is the using state structure diagram of the utility model.
1- grout outlet 2- steel strand wires 3- anchor plate 4- limits shelves 5- inlet pipe 6- wired hose 7- anchor slab 8- in figure
Bolt 9- seamless steel pipe.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing 1 and attached drawing 2, it is clear that
The embodiments are a part of the embodiments of the present invention rather than all of the embodiments.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
Referring to attached drawing 1 and attached drawing 2, the utility model it include seamless steel pipe 9；
The bottom of the seamless steel pipe 9 is equipped with the inlet pipe 5 being connected to its mutual right angle welding；It is set on the inlet pipe 5
There is the wired hose 6 being mutually sleeved and fixed with it；
The top of the seamless steel pipe 9 is equipped with anchor plate 3；The center point of the anchor plate 3 is equipped with jack, and jack is interior
Diameter is corresponding with the outer diameter of seamless steel pipe 9 and is mutually inserted；The anchor plate 3 is equipped with grout outlet 1, and grout outlet 1 and anchor plate 3
The jack of the center point is interconnected；The anchor plate 3 passes through 4 company of fixing of limit shelves being equipped at the top of seamless steel pipe 9
It connects；
The internal diameter of the seamless steel pipe 9 is equipped with the steel strand wires 2 of several and its mutually interspersed connection；The steel strand wires 2
The both ends of seamless steel pipe 9 are stretched out at both ends, and the both ends of steel strand wires 2 are mutually permanently connected by bolt 8 with anchor slab 7.
Traditional fairlead bearing capacity is poor, and duct pressure reaches as high as 1.20MPa when hole path pressure grouting, and traditional fairlead is held
Scarce capacity is pressed, it is unobstructed full to influence mud jacking.The utility model uses wired hose, and wired hose internal diameter of the pipeline can be with inlet pipe
Accomplish seamless interfacing, burst pressure 1.4MPa.Solid and reliable after clamping, it is various unfavorable to bear to generate in work progress
Factor, when mud jacking, can bear larger pressure and accelerate mud jacking process.
Limit shelves in the utility model play the role of limiting anchor plate position, if anchor plate center line and box beam abdomen
Plate Impact direction is inconsistent, will lead to after tensioning that presstressed reinforcing steel perpetuity stress and stress direction needed for web are inconsistent, there is effect
Power reduces.When anchor plate is connect with vertical duct, limit shelves can position anchor plate base opening coordinate and be guaranteed in anchor plate
Heart line is consistent with box girder web Impact direction, and guarantees that anchor plate will not slip.
The utility model using two times tensioning vertical prestressing can significantly reduce in short beam presstressed reinforcing steel put loss,
The shearing resistance degree of safety of vertical prestressing structure is improved, and vertical practical perpetuity stress can stably reach design requirement, it can be effective
Ground controls construction quality.Low retraction vertical prestressing tensioning mud jacking construction technology research is whole in advance by Pipe installing and lashing
Forming, continuous productive process accelerate the construction and installation period, effectively improve presstressed reinforcing steel positional accuracy；It is anti-using three way type inlet pipe
Only mud jacking line clogging；Guarantee that anchor plate installation site is accurate using top opening limit shelves, it is strong to the protective effect of box beam.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, the change that can be readily occurred in
Change or replace, should be covered within the scope of the utility model.
Claims (1)
1. a kind of novel inlet pipe, it includes seamless steel pipe (9)；It is characterized in that:
The bottom of the seamless steel pipe (9) is equipped with the inlet pipe (5) being connected to its mutual right angle welding；On the inlet pipe (5)
Equipped with the wired hose (6) being mutually sleeved and fixed with it；
The top of the seamless steel pipe (9) is equipped with anchor plate (3)；The center point of the anchor plate (3) is equipped with jack, and jack
Internal diameter is corresponding with the outer diameter of seamless steel pipe (9) and is mutually inserted；The anchor plate (3) is equipped with grout outlet (1), and grout outlet
(1) it is interconnected with the jack of anchor plate (3) the center point；The limit that the anchor plate (3) is equipped with by seamless steel pipe (9) top
Shelves (4) fix connection；
The internal diameter of the seamless steel pipe (9) is equipped with the steel strand wires (2) of several and its mutually interspersed connection；The steel strand wires (2)
Both ends stretch out the both ends of seamless steel pipe (9), and the both ends of steel strand wires (2) pass through bolt (8) and anchor slab (7) company of being fixed to each other
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821081033.3U CN208440996U (en) | 2018-07-09 | 2018-07-09 | A kind of novel inlet pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821081033.3U CN208440996U (en) | 2018-07-09 | 2018-07-09 | A kind of novel inlet pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208440996U true CN208440996U (en) | 2019-01-29 |
Family
ID=65088437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821081033.3U Active CN208440996U (en) | 2018-07-09 | 2018-07-09 | A kind of novel inlet pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208440996U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863421A (en) * | 2019-12-05 | 2020-03-06 | 四川石油天然气建设工程有限责任公司 | Large oil-gas pipeline crossing anchorage prestress system integrated protection system and process |
| CN111021249A (en) * | 2019-03-28 | 2020-04-17 | 临沂市政集团有限公司 | Construction device and construction method for prestressed steel bundles |
-
2018
- 2018-07-09 CN CN201821081033.3U patent/CN208440996U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021249A (en) * | 2019-03-28 | 2020-04-17 | 临沂市政集团有限公司 | Construction device and construction method for prestressed steel bundles |
| CN110863421A (en) * | 2019-12-05 | 2020-03-06 | 四川石油天然气建设工程有限责任公司 | Large oil-gas pipeline crossing anchorage prestress system integrated protection system and process |
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