CN105862859A - Thick steel bar prestress anchor rod tensioning method - Google Patents
Thick steel bar prestress anchor rod tensioning method Download PDFInfo
- Publication number
- CN105862859A CN105862859A CN201610358822.6A CN201610358822A CN105862859A CN 105862859 A CN105862859 A CN 105862859A CN 201610358822 A CN201610358822 A CN 201610358822A CN 105862859 A CN105862859 A CN 105862859A
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- CN
- China
- Prior art keywords
- stretch
- anchor
- draw
- anchor ear
- blade
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
Abstract
The invention discloses a thick steel bar prestress anchor rod tensioning and locking method. According to the method, main components comprise a thick steel bar anchor rod (100), a concrete waist beam or a box iron waist beam (200), an anchor bearing plate (300), a locking welding-assisting steel bar (400), a tensioning split head (500), a hoop normal tensioning system (600), a hoop blade (601, a hoop blade (602), a tensioning assisting threaded rod (603), tensioning assisting nuts (604), high-strength blade connection bolts (605), a first hoop blade engagement groove (606), a second hoop blade engagement groove (6-7), an oil jack (700) and a tensioning assisting anchor bearing plate (800). After the hoop normal tensioning system (600) is connected with the thick steel bar anchor rod (100) through the hoop blade engagement grooves (606 and 607), tensile stress can be transferred, all mechanisms are combined and connected for prestress construction, the method is easy to operate in the construction process, the defect that in a traditional method, every anchor rod needs a threaded rod is overcome, and thus the project investment is reduced.
Description
Technical field
The present invention relates to field of civil engineering, the stretch-draw of a kind of bar reinforcement prestressed anchor, locking means.
Background technology
In Supporting Structure of Deep Foundation Pit in City, consider engineering geology hydrologic condition, local environmental conditions, construction investment
During the factors such as cost, not every Deep Foundation Pit Supporting Project all uses " campshed+anchor cable (inner support) " supporting scheme, it is possible to adopt
Using Composition Soil Nailing Walls scheme, meet surrounding enviroment protection requirement for controlling foundation pit deformation, outer anchor structure can arrange crude steel
Rib prestressed anchor pole, controls foundation pit deformation.During bar reinforcement anchor pole Shi Hanzhang, conventional method uses draws anchor section to weld outside reinforcing bar
Connect tensioning screw rod, after punching jack tension, use nut to be fixed.During practice of construction, by tensioning screw rod
With the factor such as bar reinforcement anchor pole poor welding quality, the most concentric, stretch-draw segment length difficulty control, the prestressing force of applying does not reaches anticipated effect
Really.
Therefore, bar reinforcement prestressed anchor method for stretching needs constantly to discuss, and sums up a kind of operation in practice
Simplicity, effect substantially, does not waste the method for resource.
Summary of the invention
In view of the above problems, it is proposed that a kind of tensioning fixation method using hood type, the method is without welding stretch-draw spiral shell
Bar, after anchor ear locking, can directly use jack to carry out stretch-draw, after Shi Hanzhang, uses the solid welding of two reinforcing bar sides due to anchor
On backing plate.
The present invention is a combined type inventive technique.Main member is 100: bar reinforcement anchor pole；200: concrete breast beam or
Channel-section steel waist rail；300: anchor plate；400: locking side welding steel muscle；500: stretch-draw split heads 600: Hold Hoop method tensioning system；601: anchor ear
Blade 1；602: anchor ear blade 2；603: stretch-draw auxiliary threaded rod；604: stretch-draw auxiliary nut；605: blade connects high-strength bolt；
606: anchor ear blade occlusal crib 1；607: anchor ear blade occlusal crib 2；700: hydraulic jack；800: stretch-draw piggy-back anchor backing plate.
One aspect of the present invention, it is provided that an anchor ear system 600, can sting completely with the termination of bar reinforcement anchor pole 100
It is combined, can not slip during stretch-draw, the changing of the relative positions.Stretch-draw anchor ear includes: anchor ear blade 601 and 602 with ribbing, and 2 blades are by height
Strong spiral 605 connects fixing, anchor ear blade (601 and 602) internal orifice arrange with spiral with ribbing formed male and female groove rib mouth 606,
607 (band tooth mouth is engaged spiral), smear quartz sand in female groove rib mouth, increase between anchor ear blade and spiral
Frictional force.A stretch-draw auxiliary threaded rod 603, the screw rod 603 welded and crude steel is welded in one of them flap of anchor ear blade
Muscle 100 axle center is corresponding, is connecting side welding steel plate, is eliminating stress mutation, and spiro rod length and screw position are according to stretch-draw jack 700
Highly it is adjusted, screw rod arranges 2 nuts, when stretch-draw, fixes anchor slab.Anchor ear system 600 act as can be by bar reinforcement
Bond, during Shi Hanzhang, effectively transmit tension.Any device being similar to use anchor ear mode to transmit tension, belongs to
This scope of patent protection.
One aspect of the present invention a, it is provided that split heads 500 coordinating stretch-draw, is a punching split heads, can be by anchor ear
Blade is placed in one, and tensioning screw rod passes split heads.Split heads is by three block plate welding productions, and two end plates directly acts on prestressing force
On the locking backing plate of anchor pole, top end plate needs perforate, and as tensioning screw rod through the passage of split heads, split heads ensures enough strong
Degree, rigidity.
One aspect of the present invention, is the construction method of stretch-draw bar reinforcement anchor pole: purlin is enclosed in bar reinforcement anchorage body, anchoring
After 200 reach curing period, it is firm stretch-draw anchor ear system 600 to be connected with bar reinforcement anchor pole 100 termination, and then the stretch-draw body of rod passes
Split heads 500, arranges stretch-draw jack 700 outside split heads 500, arrange steel plate and fixing nut, it is provided that stretch-draw outside jack 700
Counter-force.Bar reinforcement anchor pole 100, by after jack 700 Shi Hanzhang, uses two locking side welding steel muscle 400 and bar reinforcement anchor
Bar 100 helps solid welding to schedule on stretch-draw anchor slab, and stretching process terminates.
Beneficial effects of the present invention: one for without to arrange silk mouth or weld in termination in spiral stretch-draw termination
Tensioning screw rod, work progress is easy, reduces the difficulty of stretch-draw terminal filament mouth finished product protection.It two is equal without every bar reinforcement anchor pole
A tensioning screw rod need to be welded, decrease material usage, cost saving.
Accompanying drawing explanation
Accompanying drawing is only used for showing the purpose of preferred embodiments, and limitation of the present invention when being not regarded as, whole attached
In figure, use different digital codings to represent different parts, its specification, model are not done qualitative description, to some parts, portion
Part change and replacing, all in scope.
Fig. 1 is all parts scheme of installation of the present invention.
Fig. 2 is anchor ear system band tooth mouth anchor ear blade drawing of the present invention.
Fig. 3 is that anchor ear system of the present invention is connected drawing with bar reinforcement anchor pole.
Detailed description of the invention
In conjunction with accompanying drawing content, the implementation process of the present invention is discussed in detail.
Chief technology point of the present invention is the method for stretching of prestressed thick reinforcement anchor pole, the processing of bar reinforcement anchor rod body,
Pore-forming, slip casting, maintenance, not in key technology, are not described in detail.
After bar reinforcement anchor bolt construction completes, require smooth domatic according to design, construction concrete breast beam or channel-section steel waist rail
200, after the 75% of waist rail concrete curing to design strength, stretch-draw can be carried out.
Before stretch-draw, anchor ear system 600 should be debugged, the anchor ear blade occlusal crib during wherein key point is anchor ear system
(606 and 607), according to bar reinforcement anchor pole rib tooth technical parameter, the anchor ear blade occlusal crib of processing correspondence is (with the single crude steel of Φ 25
As a example by muscle anchor pole).
Nominal diameter d=25.0mm, internal diameter d1=24.2mm, cross rib height h=2.1mm, cross rib width b=1.5mm, longitudinal rib height h1=
2.6mm, longitudinal rib width a=2.5mm, cross rib spacing l=12.5mm, cross rib and axis angle are 60 °.
According to above parameter, using thickness is the processing of 15mm steel plate and spiral cross rib angle, spacing, width, thickness
Consistent anchor ear system anchor ear blade.For ensureing that bar reinforcement is substantially corresponding with auxiliary tensioning screw rod 603 axle center, anchor ear occlusal crib is cut
Cut open about groove depth 5mm, in groove, process profile of tooth occlusal crib corresponding with spiral.
After the anchor ear blade occlusal crib (606 and 607) of two anchor ear blades (601 and 602) and correspondence machines, will open
Auxiliary threaded rod 603 is drawn to be welded as a whole with anchor ear blade, stretch-draw auxiliary threaded rod a length of jack height+200mm.
Stretch-draw split heads 500 is as aid when stretch-draw, and major function is to provide the stretch-draw platform of jack, and examines
The space of locking bar reinforcement anchor pole is reserved after considering stretch-draw.
After hydraulic jack 700 edits, coordinate with oil pressure pump, can Shi Hanzhang.
After above-mentioned work completes, bar reinforcement anchor pole 100 is placed in one by two anchor ear blades (601 and 602), uses blade
Connecting high-strength bolt to be fastened by anchor ear blade, bar reinforcement anchor pole 100 and two anchor ear blades (601 and 602) form entirety.
Complete above-mentioned work [020], by punching stretch-draw split heads 500 through stretch-draw auxiliary threaded rod 603, act on and poured
On the waist rail that maintenance completes, and being installed by hydraulic jack 700 with on the platform of stretch-draw split heads 500, the jack other end is arranged
Stretch-draw subbolster 800, after using stretch-draw auxiliary nut 604 fastening outside backing plate, bar reinforcement anchor rod prestress tensioning system shape
Become.Refer to accompanying drawing 1 " all parts scheme of installation of the present invention ".
Complete above-mentioned work [021], can be pushed up by oil jack 700 by design requirement and bar reinforcement anchor pole 100 classification is opened
Drawing, and carry out by code requirement stable, final employing two helps welding steel muscle 400, side with bar reinforcement anchor pole 100 with the locking of diameter
Being welded on bar reinforcement anchor pole, locking side welding steel muscle 400 and anchor plate 300 reliable contacts, locking, prestress application terminates.
The above, only a kind of embodiment in the present invention, single protection scope of the present invention is not limited thereto, and is similar to
Use anchor ear mode to transmit the device of tension, belong to this scope of patent protection.
Claims (10)
1. the present invention is a combined type inventive technique, it is characterised in that main member is 100: bar reinforcement anchor pole；200: coagulation
Soil waist rail or channel-section steel waist rail；300: anchor plate；400: locking side welding steel muscle；500: stretch-draw split heads 600: Hold Hoop method tensioning system；
601: anchor ear blade 1；602: anchor ear blade 2；603: stretch-draw auxiliary threaded rod；604: stretch-draw auxiliary nut；605: blade connects height
Strength bolt；606: anchor ear blade occlusal crib 1；607: anchor ear blade occlusal crib 2；700: hydraulic jack；800: stretch-draw assists
Anchor plate.
The most according to claim 1, it is characterised in that stretch-draw combined system provides an anchor ear system 600, can with slightly
The termination of reinforced anchor bolt 100 is fully engaged against together, can not slip, the changing of the relative positions during stretch-draw.
3. stretch-draw anchor ear includes: anchor ear blade 601 and 602 with ribbing, and 2 blades connect fixing by high-strength spiral 605, anchor ear leaf
Sheet (601 and 602) internal orifice arranges and forms male and female groove rib mouth 606,607 (band tooth mouth is engaged spiral) with spiral with ribbing,
In female groove rib mouth, smear quartz sand, increase the frictional force between anchor ear blade and spiral.
4. in one of them flap of anchor ear blade, weld a stretch-draw auxiliary threaded rod 603, the screw rod 603 welded and bar reinforcement
100 axle center are corresponding, connecting side welding steel plate, eliminating stress mutation, spiro rod length and screw position high according to stretch-draw jack 700
Degree is adjusted, and screw rod arranges 2 nuts, fixes anchor slab when stretch-draw.
5. anchor ear system 600 act as being bonded by bar reinforcement, effectively transmits tension during Shi Hanzhang.
The most any device being similar to use anchor ear mode to transmit tension, belongs to this scope of patent protection.
The most according to claim 1, it is characterised in that provide a split heads 500 coordinating stretch-draw, be a punching split heads,
Can be placed in one by anchor ear blade, tensioning screw rod passes split heads.
8. split heads is by three block plate welding productions, and two end plates directly acts on the locking backing plate of prestressed anchor, top end
Plate needs perforate, and as tensioning screw rod through the passage of split heads, split heads ensures enough intensity, rigidity.
9. it is single component and combination described in claim 1, claim 2, claim 3, it is characterised in that with reference to the accompanying drawings 1
" all parts scheme of installation of the present invention " carries out each component installation.
10., according to claim 4 content, it is characterised in that the construction method of a kind of bar reinforcement anchor pole, step is:
A. according to design bar reinforcement anchor pole 100 technical parameter, anchor ear blade (601 and 602) and the occlusion of anchor ear blade are machined
Groove (606 and 607), and be connected with stretch-draw auxiliary threaded rod 603, stretch-draw auxiliary nut 604, blade high-strength bolt 605 connect after, shape
Become stretch-draw anchor ear system 600；B. each component installation is carried out according to the inventive method；C. require bar reinforcement anchor pole is executed according to design
Prestressing；D. locking side welding steel muscle 400 is used to be locked by bar reinforcement anchor pole 100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610358822.6A CN105862859A (en) | 2016-05-27 | 2016-05-27 | Thick steel bar prestress anchor rod tensioning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610358822.6A CN105862859A (en) | 2016-05-27 | 2016-05-27 | Thick steel bar prestress anchor rod tensioning method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105862859A true CN105862859A (en) | 2016-08-17 |
Family
ID=56642119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610358822.6A Pending CN105862859A (en) | 2016-05-27 | 2016-05-27 | Thick steel bar prestress anchor rod tensioning method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105862859A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185269A (en) * | 2019-05-09 | 2019-08-30 | 上海市政建设有限公司 | A kind of bar reinforcement pre-stress stretching device and method |
| CN110905569A (en) * | 2019-11-28 | 2020-03-24 | 国家电网有限公司 | Prestressed anchor rod tensioning device |
| CN110984174A (en) * | 2019-12-06 | 2020-04-10 | 石家庄铁道大学 | Bolt anchor node for open cut foundation pit purlin enclosing structure |
| CN111411625A (en) * | 2020-05-11 | 2020-07-14 | 江苏景源万河环境科技有限公司 | Post-tensioned prestressing force applying device of anchor rod |
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| JP3827519B2 (en) * | 2000-10-27 | 2006-09-27 | 鹿島建設株式会社 | Anchor head water stop method |
| CN202705900U (en) * | 2012-07-18 | 2013-01-30 | 鄂州恺鑫铸业有限公司 | Stayed-cable bridge stayed-cable anchor pull rod cast steel cable clamp body |
| CN103321220A (en) * | 2012-03-19 | 2013-09-25 | 深圳市工勘岩土工程有限公司 | Stretching method and device of prestressed anchor cable |
| CN103422676A (en) * | 2013-07-30 | 2013-12-04 | 中煤科工集团西安研究院 | Device for evenly tensioning anchor cable |
| CN104047287A (en) * | 2014-05-26 | 2014-09-17 | 江苏金海新能源科技有限公司 | Prestressed sleeve self-lock anchor rod |
| CN203905974U (en) * | 2014-06-26 | 2014-10-29 | 河北联合大学 | High-pretightening anchor rod tensioning device |
| CN204882242U (en) * | 2015-07-31 | 2015-12-16 | 河南理工大学 | Experimental quick detachable ground tackle device is drawn to laboratory stock |
| CN204875782U (en) * | 2015-06-08 | 2015-12-16 | 北京市勘察设计研究院有限公司 | Device that carries out stretch -draw and locking to prestressed anchorage pole of muscle of giving first place to with reinforcing bar |
| CN205934915U (en) * | 2016-05-27 | 2017-02-08 | 昆明军龙岩土工程有限公司 | Staple bolt tensioning equipment of crude steel muscle stock |
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- 2016-05-27 CN CN201610358822.6A patent/CN105862859A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3827519B2 (en) * | 2000-10-27 | 2006-09-27 | 鹿島建設株式会社 | Anchor head water stop method |
| CN103321220A (en) * | 2012-03-19 | 2013-09-25 | 深圳市工勘岩土工程有限公司 | Stretching method and device of prestressed anchor cable |
| CN202705900U (en) * | 2012-07-18 | 2013-01-30 | 鄂州恺鑫铸业有限公司 | Stayed-cable bridge stayed-cable anchor pull rod cast steel cable clamp body |
| CN103422676A (en) * | 2013-07-30 | 2013-12-04 | 中煤科工集团西安研究院 | Device for evenly tensioning anchor cable |
| CN104047287A (en) * | 2014-05-26 | 2014-09-17 | 江苏金海新能源科技有限公司 | Prestressed sleeve self-lock anchor rod |
| CN203905974U (en) * | 2014-06-26 | 2014-10-29 | 河北联合大学 | High-pretightening anchor rod tensioning device |
| CN204875782U (en) * | 2015-06-08 | 2015-12-16 | 北京市勘察设计研究院有限公司 | Device that carries out stretch -draw and locking to prestressed anchorage pole of muscle of giving first place to with reinforcing bar |
| CN204882242U (en) * | 2015-07-31 | 2015-12-16 | 河南理工大学 | Experimental quick detachable ground tackle device is drawn to laboratory stock |
| CN205934915U (en) * | 2016-05-27 | 2017-02-08 | 昆明军龙岩土工程有限公司 | Staple bolt tensioning equipment of crude steel muscle stock |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185269A (en) * | 2019-05-09 | 2019-08-30 | 上海市政建设有限公司 | A kind of bar reinforcement pre-stress stretching device and method |
| CN110905569A (en) * | 2019-11-28 | 2020-03-24 | 国家电网有限公司 | Prestressed anchor rod tensioning device |
| CN110984174A (en) * | 2019-12-06 | 2020-04-10 | 石家庄铁道大学 | Bolt anchor node for open cut foundation pit purlin enclosing structure |
| CN111411625A (en) * | 2020-05-11 | 2020-07-14 | 江苏景源万河环境科技有限公司 | Post-tensioned prestressing force applying device of anchor rod |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |
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| RJ01 | Rejection of invention patent application after publication |