CN105507498B - A kind of rear anchoring process of tension steel construction - Google Patents
A kind of rear anchoring process of tension steel construction Download PDFInfo
- Publication number
- CN105507498B CN105507498B CN201510867260.3A CN201510867260A CN105507498B CN 105507498 B CN105507498 B CN 105507498B CN 201510867260 A CN201510867260 A CN 201510867260A CN 105507498 B CN105507498 B CN 105507498B
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- CN
- China
- Prior art keywords
- hole
- anchoring process
- steel construction
- rear anchoring
- tension steel
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Classifications
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- 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
Abstract
The present invention is a kind of rear anchoring process of tension steel construction, and this method is the rear anchoring process based on concrete substrate, belongs to the product structure technology of building engineering field.The present invention solves the technical problem anchored on concrete base layer after big load tension steel member, while has multiple defence line, reaches the effect of high-reliability.The pouring material poured after used must have microdilatancy effect, such as mix the concrete of micro-expanding agent or conventional back-grouting material.
Description
Technical field：
The present invention is a kind of rear anchoring process of tension steel construction, and this method is the rear anchoring side based on concrete substrate
Method, belong to the product structure technology of building engineering field.
Background technology：
The anchorage node practice has two kinds after tension steel construction on conventional concrete substrate：One kind is that production is anchored after using
Product (such as chemically-planted steel bar, chemistry plant crab-bolt, mechanical anchor), will be fixed on concrete, this mode is by product mechanics after steel member
The limitation of performance, bearing capacity are restricted, and can not be applicable when tension load value is larger；One kind is the hole-opening on concrete, and
Poured after steel member is used into back-grouting material in embedment hole, bearing capacity is higher in theory for this mode, but actual field construction bar
Part differs, and actual bearing capacity ratio theory is much lower, due to only setting up defences together, once construction quality is bad to directly result in section
The destruction of point.
The content of the invention
The technical problems to be solved by the invention：
The present invention is exactly to design and provide on a kind of concrete substrate for shortcoming present in above-mentioned prior art
Anchorage node after tension steel construction, the purpose is to the technology for solving to anchor after big load tension steel member on concrete base layer to ask
Topic, while there is multiple defence line, reach the effect of high-reliability.The pouring material poured after used must have microdilatancy effect,
Such as mix the concrete of micro-expanding agent or conventional back-grouting material.
Technical scheme：
A kind of rear anchoring process of tension steel construction is provided, this method is the rear anchoring process based on concrete substrate, its
It is characterised by that this method comprises the following steps：
Step 1: the end of peg 5 is welded to the surface of the anchoring section of steel member 4；
Step 2: the hole-opening 2 on concrete base layer 1, described hole 2 is the wedge shape that oral area is small, bottom is big；
Step 3: being uniformly provided with side hole 7 in the side wall of the described bottom of hole 2, side hole 7 is multiple；
Step 4: in the inner wall surface dabbing of described hole 2；
Step 5: the inner wall surface in described hole 2 plants bar dowel 8；
Step 6: shear key 6 is inserted into side hole 7, one shear key 6 of insertion in each side hole 7, and cause shear key
6 end is exposed at outside side hole 7；
Step 7: steel member 4 is inserted into the bottom of described hole 2, and the lower end of steel member 4 and the end of shear key 6 are welded
It is connected together；
Step 8: pouring grouting material 3 into described hole 2, and conserve to required intensity；Described grouting material
To mix the concrete of micro-expanding agent or back-grouting material.
Further, the peg 5 in step 1 is multiple.
Further, the hole 2 described in step 2 is more than 30 degree with horizontal plane angle；Hole-opening is using water drilling, pneumatic pick
And/or the mode manually to hole.
Further, opened in step 3 by the way of side hole holed using pneumatic pick or manually；
Further, in step 4 using pneumatic pick or it is artificial by the way of dabbing；
Further, the bar planting by the way of chemical glue or cement mortar in step 5.
The beneficial effect of invention：
The first line of defence：The pulling force of steel member 4 is transferred to grouting material 3 by surface shear key 5, then is transferred to hole 2
The surface of dabbing, finally it is transferred to concrete base layer 1.
Second defence line：The pulling force of steel member 4 is transferred to grouting material 3 by peg 5, then is transferred to the surface of hole 2
Bar dowel 8, finally it is transferred to concrete base layer 1.
Three lines of defence：The pulling force of steel member 4 is transferred to grouting material 3 by shear key 6, then is transferred to hole 2, passes through
The inclined-plane of hole 2 is pressurized and is transferred to concrete base layer 1.
Four lines of defense：The pulling force of steel member 4 is transferred to grouting material 3 by shear key 6, then by the wall of side cavities 7 by
Pressure is transferred to concrete base layer 1.
Four lines of defense each can independently undertake the pulling force of steel member 4, and reliability is greatly improved compared with conventional practice, subtracts
The small node failure caused by execution conditions reason.
Brief description of the drawings
Fig. 1 is vertical cross section figure
Fig. 2 is top view
Fig. 3 is vertical cross section figure
Wherein：1- concrete base layers, 2- holes, 3- grouting material 4- steel members, 5- pegs, 6- shear keies, 7- side cavities,
8- bar dowels.
Embodiment：
The construction procedure of anchorage node is as follows after this tension steel construction：
Step 1: the end of peg 5 is welded to the surface of the anchoring section of steel member 4；
Step 2: the hole-opening 2 on concrete base layer 1, described hole 2 is the wedge shape that oral area is small, bottom is big；
Step 3: being uniformly provided with side hole 7 in the side wall of the described bottom of hole 2, side hole 7 is multiple；
Step 4: in the inner wall surface dabbing of described hole 2；
Step 5: the inner wall surface in described hole 2 plants bar dowel 8；
Step 6: shear key 6 is inserted into side cavities 7, one shear key 6 of insertion in each side cavities 7, and cause anti-
The end for cutting key 6 is exposed at outside side hole 7；
Step 7: steel member 4 is inserted into the bottom of described hole 2, and the lower end of steel member 4 and the end of shear key 6 are welded
It is connected together；
Step 8: pouring grouting material 3 into described hole 2, and conserve to required intensity；Described grouting material
To mix the concrete of micro-expanding agent or back-grouting material.
Further, the peg 5 in step 1 is multiple.
Further, the hole 2 described in step 2 is more than 30 degree with horizontal plane angle；Hole-opening is using water drilling, pneumatic pick
And/or the mode manually to hole.
Further, opened in step 3 by the way of side hole holed using pneumatic pick or manually；
Further, in step 4 using pneumatic pick or it is artificial by the way of dabbing；
Further, the bar planting by the way of chemical glue or cement mortar in step 5.
Further, in step 2, described hole is non-perpendicular with horizontal plane.
Claims (7)
1. a kind of rear anchoring process of tension steel construction, this method are the rear anchoring process based on concrete substrate, its feature exists
Comprise the following steps in this method：
Step 1: the end of peg (5) is welded to the surface of steel member (4) anchoring section；
Step 2: the hole-opening (2) on concrete base layer (1), described hole (2) is the wedge shape that oral area is small, bottom is big；
Step 3: being uniformly provided with side hole (7) in the side wall of described hole (2) bottom, side hole (7) are multiple；
Step 4: in the inner wall surface dabbing of described hole (2)；
Step 5: the inner wall surface in described hole (2) plants bar dowel (8)；
Step 6: shear key (6) is inserted into side hole (7), one shear key (6) of insertion in each side hole (7), and cause anti-
The end for cutting key (6) is exposed at side hole (7) outside；
Step 7: steel member (4) is inserted into described hole (2) bottom, and by steel member (4) lower end and the end of shear key (6)
Portion welds together；
Step 8: pouring grouting material (3) into described hole (2), and conserve to required intensity；Described grouting material
To mix the concrete of micro-expanding agent or back-grouting material.
A kind of 2. rear anchoring process of tension steel construction according to claim 1, it is characterised in that：Peg in step 1
(5) to be multiple.
A kind of 3. rear anchoring process of tension steel construction according to claim 1, it is characterised in that：Described in step 2
Hole (2) is more than 30 degree with horizontal plane angle；Hole-opening is using water drilling, pneumatic pick and/or by the way of manually holing.
A kind of 4. rear anchoring process of tension steel construction according to claim 1, it is characterised in that：Side hole is opened in step 3
By the way of using pneumatic pick or manually holing.
A kind of 5. rear anchoring process of tension steel construction according to claim 1, it is characterised in that：Wind is used in step 4
Pick or artificial mode dabbing.
A kind of 6. rear anchoring process of tension steel construction according to claim 1, it is characterised in that：Using change in step 5
Learn the mode bar planting of glue or cement mortar.
A kind of 7. rear anchoring process of tension steel construction according to claim 1, it is characterised in that：It is described in step 2
Hole and horizontal plane be non-perpendicular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510867260.3A CN105507498B (en) | 2015-12-01 | 2015-12-01 | A kind of rear anchoring process of tension steel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510867260.3A CN105507498B (en) | 2015-12-01 | 2015-12-01 | A kind of rear anchoring process of tension steel construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105507498A CN105507498A (en) | 2016-04-20 |
| CN105507498B true CN105507498B (en) | 2017-11-28 |
Family
ID=55715771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510867260.3A Active CN105507498B (en) | 2015-12-01 | 2015-12-01 | A kind of rear anchoring process of tension steel construction |
Country Status (1)
| Country | Link |
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| CN (1) | CN105507498B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE663446A (en) * | 1964-05-21 | |||
| GB1216923A (en) * | 1968-04-24 | 1970-12-23 | Ccl Systems Ltd | Improvements in or relating to anchorage assemblies for the prestressing of concrete structures |
| CN2455799Y (en) * | 2000-12-28 | 2001-10-24 | 肖纹篯 | Rear-installed wall anchor tightener |
| CN101525911B (en) * | 2009-04-07 | 2011-04-27 | 同济大学 | Sleeve dissipative element with shear key |
| CN103967289B (en) * | 2014-04-23 | 2016-01-13 | 江苏建研建设工程质量安全鉴定有限公司 | A kind ofly be applicable to the bar planting method and the bar planting structure that improve anchoring bearing capacity after plain concrete |
| CN203977892U (en) * | 2014-06-26 | 2014-12-03 | 内蒙古电力勘测设计院有限责任公司 | The casing reinforcement structure of power transformation steel pipe support |
| CN104929149A (en) * | 2015-07-08 | 2015-09-23 | 黄冀卓 | Stiffened embedded type column foot for reducing steel column embedment depth and construction technology thereof |
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2015
- 2015-12-01 CN CN201510867260.3A patent/CN105507498B/en active Active
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| Publication number | Publication date |
|---|---|
| CN105507498A (en) | 2016-04-20 |
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