CN110359380A - The three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force - Google Patents
The three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force Download PDFInfo
- Publication number
- CN110359380A CN110359380A CN201910735496.XA CN201910735496A CN110359380A CN 110359380 A CN110359380 A CN 110359380A CN 201910735496 A CN201910735496 A CN 201910735496A CN 110359380 A CN110359380 A CN 110359380A
- Authority
- CN
- China
- Prior art keywords
- cushion cap
- concrete foundation
- foundation cushion
- prestressing force
- tensioning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 47
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000009434 installation Methods 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 3
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 239000000835 fiber Substances 0.000 abstract description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 6
- 239000004917 carbon fiber Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a kind of three-dimensional tensioning equipments of concrete foundation cushion cap prestressing force, including base assembly, stretching rope and multiple angle fixed pulleys, the base assembly includes pedestal, jack, tensioning fixed pulley, the first anchor block and the second anchor block, and the pedestal is fixed on the side wall of concrete foundation cushion cap by pre embedded bolt.By adopting the above technical scheme, the three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force of the invention, pass through the angle fixed pulley of the external angle position for two intersecting side walls being installed in concrete foundation cushion cap, stretching rope can be made to cross over to the side wall of two Different Planes and be wrapped in the circumferential direction of the concrete foundation cushion cap, tensioning is carried out by jack pair stretching rope, it is tightened up carbon fibre material, it, can be to carbon fibre material offer stretch-draw prestressing force in compared with the prior art using being adhesively fixed by the way of.
Description
Technical field
The present invention relates to a kind of three-dimensional tensioning equipments of concrete foundation cushion cap prestressing force, belong to concrete construction skill
Art field.
Background technique
Currently, bridge mostly uses prestressed reinforced concrete structure, apply in bridge concrete structural fortification use
Prestressing force drag-line be usually bar shaped, band shape or cylindricality, applying the conventional use of stretch-draw prestressing force reinforcement means has pre-tensioning system
Or two kinds of post stretching.Such as our previous application CN107724258A discloses a kind of pre-stressed carbon fiber tensioning equipment,
As shown in Figure 1, including fixing end pedestal 11, fixing end anchor block 12, the stretching rope 3 of carbon fiber, stretching end anchor block 22 and tensioning
End group seat 21, the fixing end anchor block 12 are both ends that are cylindrical and being individually fixed in the stretching rope 3 with stretching end anchor block 22；
The fixing end anchor block 12 connects one end of a standing screw 13, and the other end of the standing screw 13, which passes through, penetrates through the fixation
Be spirally connected a fixture nut 140 after the fixing end punched out of end group seat 11；The stretching end anchor block 22 connects a tensioning screw rod 104
One end, the other end of the tensioning screw rod 104 are connected to after passing through the stretching end punched out penetrated through on the stretching end pedestal 21
Jack 102；A cavity 101a is offered on the stretching end pedestal 21, the tensioning screw rod 104 passes through the cavity
101a；A counter-force nut 105 is provided in the cavity 101a, the counter-force nut 105 can be pulled in jack 102 to be opened
Draw screw rod 104 when in the cavity 101a with 104 synchronizing moving of tensioning screw rod, and in 102 release travel of jack with
And after tensioning operation for be threaded to cavity 101a close 22 side of stretching end anchor block sidewall locations with prevent open
Drag-line 3 is shunk.Tensioning equipment in the prior art is above-mentioned linear tensioning equipment, not three-dimensional prestressed stretch-draw
Device, and when three-dimensional concrete structure needs reinforcement, such as the foundation platform of square column type, usually in concrete surface
Rubber cement is brushed, then carbon fiber board or carbon cloth cladding are pasted onto concrete surface, the mode of this stickup can not be to carbon fiber
Pulling force is previously applied in dimension material.
Summary of the invention
Therefore, the purpose of the present invention is to provide a kind of three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force, tensioning
Rope can carry out tensioning around concrete structure.
To achieve the goals above, a kind of three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force of the invention, including
Base assembly, stretching rope and multiple angle fixed pulleys, the base assembly include pedestal, jack, tensioning fixed pulley, the first anchor
Block and the second anchor block, the pedestal are fixed on the side wall of concrete foundation cushion cap by pre embedded bolt；The tensioning is slided surely
Wheel is located at the side of the pedestal, and first anchor block and the second anchor block are fixed on the other side of the pedestal；It is each described
Angle fixed pulley is installed on the external angle position of two intersecting side walls in concrete foundation cushion cap, and the stretching rope bypasses the tensioning
Fixed pulley and both ends are fixed respectively after successively bypassing multiple angle fixed pulleys along the circumferentially extending of concrete foundation cushion cap
In first anchor block and the second anchor block；The jack carries out the stretching rope for withstanding the tensioning fixed pulley
Tensioning.
The pedestal includes the elongated slot positioned at middle part, and the jack is set in the elongated slot；The tensioning fixed pulley
It is installed on the end of a third screw rod, the other end of the third screw rod is inserted into the length after passing through the through-hole on the pedestal
On the inside of slot and it is connected to the jack；First anchor block and the second anchor block are individually fixed in the first screw rod and the second spiral shell
Bar, first screw rod are inserted on the inside of the elongated slot after passing through the through-hole on the pedestal with the second screw rod and are spirally connected respectively
With the first nut and the second nut.
A cavity is offered on the pedestal, the third screw rod passes through the cavity；It is provided in the cavity
One is set in the third nut on the outside of the third screw rod.
The jack is centre-hole jack, after the third screw rod passes through the punching duct on the axis
It is bolted in the 4th nut.
The section of the stretching rope is circle.
The groove for accommodating the pedestal is offered on the side wall of the concrete foundation cushion cap.
The angle fixed pulley is mounted in the chamfered groove being opened on the external angle position of concrete foundation cushion cap.
The angle fixed pulley includes mounting blocks and installation axle, and mounting groove, roller installation are provided in the mounting blocks
In in the mounting groove；The mounting blocks have fully embedded into the chamfered groove, and the edge of the roller is protruding to the mounting groove
Outside.
The mounting blocks pass through on the inner sidewall of rubber cement bonding and the mounting groove.
The width of the mounting groove is greater than the thickness of the roller, to make the roller in the axial direction of the installation axle
It can move.
By adopting the above technical scheme, the three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force of the invention, passes through installation
The angle fixed pulley of the external angle position of two intersecting side walls in concrete foundation cushion cap can be such that stretching rope crosses over to two not
It coplanar side wall and is wrapped in the circumferential direction of the concrete foundation cushion cap, tensioning is carried out by jack pair stretching rope,
Be tightened up carbon fibre material, thus in compared with the prior art by the way of being adhesively fixed for, can be to carbon fiber
Material provides stretch-draw prestressing force.
Detailed description of the invention
Fig. 1 is this pre-stressed carbon fiber tensioning equipment structural schematic diagram in the prior art.
Fig. 2 is structural schematic diagram of the invention.
Fig. 3 is the partial enlarged view in the portion A in Fig. 2.
Fig. 4 is the partial enlarged view in the portion B in Fig. 2.
Fig. 5 is the schematic diagram of angle fixed pulley and chamfered groove discrete state in Fig. 4.
Fig. 6 is another angle schematic diagram of Fig. 4.
Specific embodiment
Below by way of the drawings and specific embodiments, the present invention is described in further detail.
As shown, the present embodiment provides a kind of three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force, including pedestal
Component 1, stretching rope 3 and multiple angle fixed pulleys 4, the base assembly 1 include pedestal 101, jack 102, tensioning fixed pulley
103, the first anchor block 104 and the second anchor block 105, the pedestal 101 are fixed on concrete foundation cushion cap 100 by pre embedded bolt
Side wall on；The tensioning fixed pulley 103 is located at the side of the pedestal 101, first anchor block 104 and the second anchor block
105 are fixed on the other side of the pedestal 101；Each angle fixed pulley 4 is installed on two in concrete foundation cushion cap 100
The external angle position of intersecting side walls, the stretching rope 3 is around the tensioning fixed pulley 103 and both ends are along concrete foundation cushion cap
100 circumferentially extending is individually fixed in first anchor block 104 and the second anchor block after successively bypassing multiple angle fixed pulleys 4
105；The jack 102 is for withstanding the tensioning fixed pulley 103 to carry out tensioning to the stretching rope 3.
The pedestal 101 includes the elongated slot 101a positioned at middle part, and the jack 102 is set in the elongated slot 101a；
The tensioning fixed pulley 103 is installed on the end of a third screw rod 106, and the other end of the third screw rod 106 passes through the base
It is inserted into after through-hole on seat 101 on the inside of the elongated slot 101a and is connected to the jack 102；First anchor block 104
And second anchor block 105 be individually fixed in the first screw rod 107 and the second screw rod 108, first screw rod 107 and the second screw rod
108 pass through the through-hole on the pedestal 101 after be inserted on the inside of the elongated slot 101a and be spirally connected respectively with the first nut 109 and
Second nut 110.
A cavity 101b is offered on the pedestal 101, the third screw rod 106 passes through the cavity 101b；Institute
It states and is provided with a third nut 111 for being set in 106 outside of third screw rod in cavity 101b.
The jack 102 is centre-hole jack 102, and the third screw rod 106 passes through on 102 axis of jack
Punching duct after be bolted in the 4th nut 112.
The section of the stretching rope 3 is circle.
The groove 100a for accommodating the pedestal 101 is offered on the side wall of the concrete foundation cushion cap 100.
The angle fixed pulley 4 is mounted in the chamfered groove 100b being opened on the external angle position of concrete foundation cushion cap 100.
The angle fixed pulley 4 includes mounting blocks 401 and installation axle 402, is provided with mounting groove in the mounting blocks 401
403, roller 404 is installed in the mounting groove 403, and annular groove 404a is provided on roller 404；The mounting blocks 401 are all
It is embedded into the chamfered groove 100b, the edge of the roller 404 is protruding to 403 outside of mounting groove.
The mounting blocks 401 pass through on the inner sidewall of rubber cement bonding and the mounting groove 403.
The width of the mounting groove 403 is greater than the thickness of the roller 404, to make the roller 404 in the installation
It can be moved in the axial direction of axis 402.
The three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force of the invention, by being installed on concrete foundation cushion cap
The angle fixed pulley 4 of the external angle position of two intersecting side walls in 100 can be such that stretching rope 3 crosses over to the side of two Different Planes
It wall and is wrapped in the circumferential direction of the concrete foundation cushion cap 100, tensioning is carried out to stretching rope 3 by jack 102, makes carbon
Fibrous material is tightened up, thus in compared with the prior art by the way of being adhesively fixed for, can be to carbon fibre material
Stretch-draw prestressing force is provided.
Obviously, above-described embodiment is only intended to clearly illustrate example, and does not limit the embodiments.For
For those of ordinary skill in the art, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And obvious variation extended from this or change
It moves still within the protection scope of the invention.
Claims (10)
1. a kind of three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force, it is characterised in that: including base assembly, stretching rope with
And multiple angle fixed pulleys, the base assembly include pedestal, jack, tensioning fixed pulley, the first anchor block and the second anchor block, institute
Pedestal is stated to be fixed on by pre embedded bolt on the side wall of concrete foundation cushion cap；The tensioning fixed pulley is located at the one of the pedestal
Side, first anchor block and the second anchor block are fixed on the other side of the pedestal；Each angle fixed pulley is installed on coagulation
The external angle position of two intersecting side walls in earth foundation cushion cap, the stretching rope around the tensioning fixed pulley and both ends along
The circumferentially extending of concrete foundation cushion cap is individually fixed in first anchor block and after successively bypassing multiple angle fixed pulleys
Two anchor blocks；The jack carries out tensioning to the stretching rope for withstanding the tensioning fixed pulley.
2. the three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force as described in claim 1, it is characterised in that: the pedestal
Elongated slot including being located at middle part, the jack are set in the elongated slot；The tensioning fixed pulley is installed on a third screw rod
End, the other end of the third screw rod is inserted on the inside of the elongated slot and is connected to after passing through the through-hole on the pedestal
The jack；First anchor block and the second anchor block are individually fixed in the first screw rod and the second screw rod, first screw rod
It is inserted on the inside of the elongated slot and is spirally connected respectively and the first nut and the after passing through the through-hole on the pedestal with the second screw rod
Two nuts.
3. the three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force as claimed in claim 2, it is characterised in that: in the base
A cavity is offered on seat, the third screw rod passes through the cavity；It is provided with one in the cavity and is set in the third
Third nut on the outside of screw rod.
4. the three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force as claimed in claim 3, it is characterised in that: described very heavy
Top is centre-hole jack, and the third screw rod is bolted in the 4th nut after passing through the punching duct on the axis.
5. the three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force as described in any one in claim 1-5, it is characterised in that:
The section of the stretching rope is circle.
6. the three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force as described in any one in claim 1-5, it is characterised in that:
The groove for accommodating the pedestal is offered on the side wall of the concrete foundation cushion cap.
7. the three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force as described in any one in claim 1-5, it is characterised in that:
The angle fixed pulley is mounted in the chamfered groove being opened on the external angle position of concrete foundation cushion cap.
8. the three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force as claimed in claim 7, it is characterised in that: the angle is fixed
Pulley includes mounting blocks and installation axle, and mounting groove is provided in the mounting blocks, and roller is installed in the mounting groove；Institute
It states mounting blocks to have fully embedded into the chamfered groove, the edge of the roller is protruding on the outside of the mounting groove.
9. the three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force as claimed in claim 8, it is characterised in that: the installation
Block passes through on the inner sidewall of rubber cement bonding and the mounting groove.
10. the three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force as claimed in claim 8, it is characterised in that: the peace
The width of tankage is greater than the thickness of the roller, to make the roller that can move in the axial direction of the installation axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735496.XA CN110359380A (en) | 2019-08-09 | 2019-08-09 | The three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910735496.XA CN110359380A (en) | 2019-08-09 | 2019-08-09 | The three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110359380A true CN110359380A (en) | 2019-10-22 |
Family
ID=68223811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910735496.XA Pending CN110359380A (en) | 2019-08-09 | 2019-08-09 | The three-dimensional tensioning equipment of concrete foundation cushion cap prestressing force |
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| Country | Link |
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| CN (1) | CN110359380A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856209A (en) * | 2022-07-11 | 2022-08-05 | 北京市建筑工程研究院有限责任公司 | High-precision tensioning system for prestressed steel structure and using method |
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| US20190048602A1 (en) * | 2016-05-20 | 2019-02-14 | Southeast University | Automatic tensioning system and method for strengthening beam, slab and column by pre-stressed frp plate |
| CN109944241A (en) * | 2019-04-04 | 2019-06-28 | 长江勘测规划设计研究有限责任公司 | The reversed pulling device in anchor cable hole bottom and anchor cable installation method |
| CN210621503U (en) * | 2019-08-09 | 2020-05-26 | 上海悍马建筑科技有限公司 | Prestressed three-dimensional tensioning device for concrete foundation bearing platform |
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2019
- 2019-08-09 CN CN201910735496.XA patent/CN110359380A/en active Pending
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| US6247279B1 (en) * | 1998-03-24 | 2001-06-19 | University Of Ottawa | Retrofitting existing concrete columns by external prestressing |
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| KR20050028010A (en) * | 2005-03-02 | 2005-03-21 | 김기태 | The wire rope support and the reinforecment method of construction using of the wire rope support |
| CN1821519A (en) * | 2005-12-22 | 2006-08-23 | 高维成 | Tension string beam structure with dog bone type damper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114856209A (en) * | 2022-07-11 | 2022-08-05 | 北京市建筑工程研究院有限责任公司 | High-precision tensioning system for prestressed steel structure and using method |
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