CN202416879U - Extending cylinder device applicable to prestressed buried anchor - Google Patents
Extending cylinder device applicable to prestressed buried anchor Download PDFInfo
- Publication number
- CN202416879U CN202416879U CN 201120552370 CN201120552370U CN202416879U CN 202416879 U CN202416879 U CN 202416879U CN 201120552370 CN201120552370 CN 201120552370 CN 201120552370 U CN201120552370 U CN 201120552370U CN 202416879 U CN202416879 U CN 202416879U
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- anchor
- buried anchor
- buried
- prestressed
- jack
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Abstract
The utility model discloses an extending cylinder device applicable to a prestressed buried anchor. The extending cylinder device applicable to the prestressed buried anchor comprises a hollow cylinder body, wherein a limit plate is arranged at one end, near a work anchor, of the hollow cylinder body; a through hole for a steel strand to pass through is formed on the limit plate; and the other end of the hollow cylinder body accords with the contact surface of a jack. By adoption of the extending cylinder device, the buried anchor end can be tensioned conveniently and quickly without damaging the internal reinforcing steel bar and the concrete structure, so that high efficiency and safety of large-scale prestressed structure construction using the buried anchor process are greatly improved.
Description
Technical field
The utility model relates to the end stretch-draw of buried anchor technology in a kind of Post-tension Prestress Construction and handles especially a kind of prolongation cartridge that is applicable to the buried anchor of prestressing force.
Background technology
In recent years, along with carrying out on a large scale of China's infrastructure, the large-sized prestress structure is also emerged in large numbers one after another, and prestressed construction technology constantly updates.When carrying out the post-stressed concrete structure thing design that tension tonnage is big, prestressing tendon is densely distributed, adopt buried anchor technology more and more.Tradition stretching construction technology is when handling buried anchor; Mostly adopt and reserve position, jack tension hole or adopt bed hedgehopping such as work anchor, steel plate and lead to the method that concrete surface is installed jack tension again; Before a kind of weak point of job practices be to block the reinforcing bar in the preformed hole, abdicate working space to jack, again reinforcing bar is welded reposition after stretch-draw finishes; So not only also there is adverse effect in the complex operation difficulty to structure stress.In addition, along with the increase of tension tonnage, the volume of corresponding jack is also huge relatively, because perforated area is bigger, also there is difficulty in sealing off and covering anchorage.A kind of job practices in back, jack more shallow at the anchored end buried depth gone back basic feasible solution when big with structural concrete surface angle; But it is darker for anchored end buried depth in works; Then need pass through a plurality of work anchors or steel plate bed hedgehopping when jack and structural concrete surface angle is less simultaneously; Difficult installation, efficiency of construction is low, the most important thing is to exist very big security risk.
The utility model content
The purpose of the utility model need not to destroy the concrete self structure when providing a kind of buried anchored end stretch-draw; Simultaneously the stretch-draw operation be can accomplish quickly and easily, the high efficiency of large-sized prestress structure construction and the prolongation cartridge that is applicable to the buried anchor of prestressing force of safety significantly improved.
For realizing above-mentioned purpose; The technical scheme that the utility model adopted is: a kind of prolongation cartridge that is applicable to the buried anchor of prestressing force; Comprise hollow cylindrical shell; Said hollow cylindrical shell is provided with limiting plate at the end near work anchor, on limiting plate, is provided with the through hole that can pass steel strand, and the other end of hollow cylindrical shell and the contact surface of jack match.
Said limiting plate is provided with the hole position corresponding with work anchor.
Said hollow cylindrical shell is fixedly connected with limiting plate.
The quantity of said through hole is consistent with the bar number of steel strand, and its size is slightly larger than the line footpath of steel strand.
After the utility model adopts said structure; Can be with it as buried anchor prestressed stretch-draw servicing unit, this prolongs the Force transmission parts of cartridge as the stretch-draw end, between ground tackle and jack; Jack is led to outer walls of concrete carry out the stretch-draw operation; Solved ground tackle and imbedded construction difficult problems such as the concrete degree of depth is big, angle is little, jack working space deficiency, guaranteed when carrying out buried anchored end stretch-draw, to need not to destroy the concrete self structure; Simultaneously can accomplish the stretch-draw operation quickly and easily, significantly improve the high efficiency and the safety of large-sized prestress structure construction.And prolong cartridge self and also have advantage simple in structure, easy to operate, that applicability is strong, can be widely used in the middle of the pre-stress construction of various buried anchor technologies.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further explain:
Fig. 1 is the utility model structure chart;
Fig. 2 is the left view of the utility model;
Fig. 3 uses the process schematic representation of wearing prestress wire at the buried anchor of prestressing force for the utility model;
Fig. 4 uses the process schematic representation at the installation work anchor of the buried anchor of prestressing force for the utility model;
Fig. 5 uses the process schematic representation that prolongs cartridge in the installation of the buried anchor of prestressing force for the utility model;
Fig. 6 uses at the installation jack of the buried anchor of prestressing force and the process schematic representation of moveable anchor for the utility model.
Among the figure: 1 hollow cylindrical shell, 2 limiting plates, 21 through holes, 22 work anchor spacing hole positions, 3 reserving hole channels, 4 anchor plates, 5 work anchors, 6 steel strand, 7 jack, 8 moveable anchors, 9 concrete, 10 prestress pipes.
The specific embodiment
Shown in Fig. 1 and 2; The prolongation cartridge that is applicable to the buried anchor of prestressing force of the utility model; Comprise hollow cylindrical shell 1, hollow cylindrical shell 1 is provided with limiting plate 2 at the end near work anchor, and this limiting plate 2 is fixing with hollow cylindrical shell 1 welding; On limiting plate 2, be provided with the through hole 21 that can pass steel strand, the other end of hollow cylindrical shell 1 and the contact surface of jack match.On limiting plate 2, also be provided with the spacing hole position 22 corresponding with work anchor.The quantity of above-mentioned through hole 21 is consistent with the bar number of steel strand 6, and its size is slightly larger than the line footpath of steel strand 6.
Use the job practices of the buried anchoring technology of the utility model end portion treatment technology following
1, installation work anchor
Earlier the prestress wire of putting on 6 is passed work anchor 5 one by one, again with work anchor 5 along reserving hole channel 3 push hold out against closely connected in anchor plate 4.
2, the prolongation tube is installed
Steel strand 6 aligned through holes 21 are passed the limiting plate 2 of hollow cylindrical shell 1 end one by one, pass, will prolong cartridge afterwards and push along reserving hole channel 3 from the other end, the work anchor 5 of installation in position before holding out against, and do temporary fixed.
3, jack is installed
Prestress wire 6 is passed stretch-draw with jack 7, again jack 7 contrapositions is snapped at the end of hollow cylindrical shell 1, and do temporary fixed, afterwards at jack 7 end erecting tools anchors 8.
4, stretching construction and dismounting
After jack 7 and moveable anchor 8 installation in position were good, suitable afterburning pretension made ground tackle, prolongs closely connected holding out against between cartridge, jack 7 and the moveable anchor 8, guarantees each parts along the axis power transmission, removes interim constraint afterwards, carries out stretch-draw by design specifications.After stretch-draw finishes, successively removal tool anchor 8, jack 7, prolong cartridge, at last by design specifications cut, operations such as slip casting, sealing off and covering anchorage.
This novel prolongation cartridge has following several characteristics: prolong the tube simple structure, be easy to processing and manufacturing; Own wt is light, and volume is little, and is quick and easy for installation; Adopt monoblock cast, the strength of materials and controllable stiffness property are strong, and this member stress is clear and definite, and be safe and reliable, reusable.
The above is the preferred implementation of the utility model; Certainly can not limit the interest field of the utility model with this; Should be understood that; For those skilled in the art, the technical scheme of the utility model is made amendment or is equal to replacement, do not break away from the protection domain of the utility model technical scheme.
Claims (4)
1. prolongation cartridge that is applicable to the buried anchor of prestressing force; Comprise hollow cylindrical shell (1); It is characterized in that: hollow cylindrical shell (1) is provided with limiting plate (2) at the end near work anchor; On limiting plate (2), be provided with the through hole (21) that can pass steel strand, the other end of hollow cylindrical shell (1) and the contact surface of jack match.
2. the prolongation cartridge that is applicable to the buried anchor of prestressing force according to claim 1 is characterized in that: said limiting plate (2) is provided with the hole position (22) corresponding with work anchor.
3. the prolongation cartridge that is applicable to the buried anchor of prestressing force according to claim 1 is characterized in that: said hollow cylindrical shell (1) is fixedly connected with limiting plate (2).
4. the prolongation cartridge that is applicable to the buried anchor of prestressing force according to claim 1 is characterized in that: the quantity of said through hole (21) is consistent with the bar number of steel strand, and its size is slightly larger than the line footpath of steel strand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120552370 CN202416879U (en) | 2011-12-27 | 2011-12-27 | Extending cylinder device applicable to prestressed buried anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120552370 CN202416879U (en) | 2011-12-27 | 2011-12-27 | Extending cylinder device applicable to prestressed buried anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202416879U true CN202416879U (en) | 2012-09-05 |
Family
ID=46741655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120552370 Expired - Lifetime CN202416879U (en) | 2011-12-27 | 2011-12-27 | Extending cylinder device applicable to prestressed buried anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202416879U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911999A (en) * | 2015-05-15 | 2015-09-16 | 中国建筑第六工程局有限公司 | Construction method for deeply burying anchor |
| CN106436576A (en) * | 2016-08-24 | 2017-02-22 | 广西长长路桥建设有限公司 | Constructing method of main tower of cable-stayed bridge through circumferential prestressing force |
| CN112976299A (en) * | 2021-02-26 | 2021-06-18 | 中交一公局第二工程有限公司 | Skew prefabricated T-beam prestress tensioning construction method and auxiliary device |
| CN113585091A (en) * | 2021-09-02 | 2021-11-02 | 中铁北京工程局集团第二工程有限公司 | Construction method of super-long prestressed steel beam |
-
2011
- 2011-12-27 CN CN 201120552370 patent/CN202416879U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911999A (en) * | 2015-05-15 | 2015-09-16 | 中国建筑第六工程局有限公司 | Construction method for deeply burying anchor |
| CN106436576A (en) * | 2016-08-24 | 2017-02-22 | 广西长长路桥建设有限公司 | Constructing method of main tower of cable-stayed bridge through circumferential prestressing force |
| CN112976299A (en) * | 2021-02-26 | 2021-06-18 | 中交一公局第二工程有限公司 | Skew prefabricated T-beam prestress tensioning construction method and auxiliary device |
| CN113585091A (en) * | 2021-09-02 | 2021-11-02 | 中铁北京工程局集团第二工程有限公司 | Construction method of super-long prestressed steel beam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |