CN203977709U - A kind of rear combination grip formula prestressed anchor - Google Patents
A kind of rear combination grip formula prestressed anchor Download PDFInfo
- Publication number
- CN203977709U CN203977709U CN201420293206.3U CN201420293206U CN203977709U CN 203977709 U CN203977709 U CN 203977709U CN 201420293206 U CN201420293206 U CN 201420293206U CN 203977709 U CN203977709 U CN 203977709U
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- hole
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- reinforcing steel
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- presstressed reinforcing
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Abstract
A kind of rear combination grip formula prestressed anchor, it comprises train wheel bridge and lower plate, lower plate upper surface is provided with the first semi-circular presstressed reinforcing steel anchor hole, train wheel bridge lower surface is provided with the second semi-circular presstressed reinforcing steel anchor hole, the first semi-circular presstressed reinforcing steel anchor hole and the corresponding fastening of the second semi-circular presstressed reinforcing steel anchor hole, the first semi-circular presstressed reinforcing steel anchor hole both sides are provided with dovetail groove, the second semi-circular presstressed reinforcing steel anchor hole both sides are provided with dovetail boss, dovetail boss and dovetail groove are slidably connected, lower plate dovetail groove position is provided with the first location fastening through-hole, train wheel bridge dovetail lug boss position is provided with the second location fastening through-hole, bolt is arranged on location fastening through-hole, train wheel bridge is fixedly connected with lower plate.It has solved at present cannot be to having applied prestressed engineering structures, the pre-stress system running in transformation process cannot local discharge and prestress engineering structure of modification in produce because prestressing force discharges structural damage and the engineering harm problem causing.
Description
Technical field
The utility model belongs to the relevant prestressing technique of civil engineering field, relates to a kind of prestressed rear anchoring engineering renovation technique, is specifically related to a kind of rear combination grip formula prestressed anchor.
Background technology
Prestressing technique in civil engineering is after stretch-draw has been in the milk at present, if it is often difficult that original design exists defect maybe to need when applying prestressing force position and carry out local flow improvement, wherein maximum problem is under the prerequisite how prestressing force effectively keeps in effectively guaranteeing integrated prestress system, to the local prestressing force in system, carries out part release and carry out part engineered.In transformation, should keep original prestressing force local losses unlikely excessive, guarantee again can transform in former prestressed structure localized positions, and then former prestress system is carried out on the basis of transformation effectively mend and open simultaneously.
Prestress anchoraging facility in civil engineering adopts pier nose anchor, clip type anchor and collar anchor etc. more at present, above-mentioned anchoring means is all to use while it being applied to prestressing force for original structure in the situation that not bearing prestress anchoraging, and how keeping carrying out local flow improvement in original prestressed situation, to be a current difficult problem for having applied prestressed structure.As original prestressing force is all put to a transformation, not only expend a large amount of manpower and materials, and certainly will also will cause unpredictable harm to original structure, even cause the generation of engineering disaster.
Summary of the invention
In the face of the technical barrier of above-mentioned existence, the purpose of this utility model is to provide a kind of rear combination grip formula prestressed anchor; This kind of clipping prestressed anchor, for having applied prestressed Engineering System, is to carry out the effective equipment adopting when local solution is transformed except prestressing force to applying prestressed position.Can solve and effectively keep to engineering structures, giving the effectively technical problem of transformation under the prestressed prerequisite of some strength, and then can guarantee the loss of prestress of original pre-stress system can remain in certain scope, and carrying out effectively mending a rear general safety that guarantees structure.
In order to solve the technical problem of above-mentioned existence, the technical scheme that the utility model adopts is: a kind of rear combination grip formula prestressed anchor, it is characterized in that: this prestressed anchor comprises train wheel bridge and lower plate, lower plate upper surface is provided with the first semi-circular presstressed reinforcing steel anchor hole, train wheel bridge lower surface is provided with the second semi-circular presstressed reinforcing steel anchor hole, the first semi-circular presstressed reinforcing steel anchor hole and the corresponding fastening of the second semi-circular presstressed reinforcing steel anchor hole, the first semi-circular presstressed reinforcing steel anchor hole both sides are provided with dovetail groove, the second semi-circular presstressed reinforcing steel anchor hole both sides are provided with dovetail boss, dovetail boss and dovetail groove are slidably connected, lower plate dovetail groove position is provided with the first location fastening through-hole, train wheel bridge dovetail lug boss position is provided with the second location fastening through-hole, bolt is arranged on the first location fastening through-hole and the second location fastening through-hole, train wheel bridge is fixedly connected with lower plate.
The utility model is combined into one by dovetail groove and dovetail boss by the ground tackle of two Semi-foldings, during use, the ground tackle of two Semi-foldings is connected on the presstressed reinforcing steel of transformation place by dovetail groove and dovetail boss, by the location fastening through-hole being provided with on ground tackle body in advance, adopt high-strength bolt further clamp and locate again, finally adopt again welding procedure that the bonding crack firm welding of upper and lower clamping plate is become to an integral body.Adopt on this basis the conventional OVM ground tackle of prior art prestress system intermediate plate, presstressed reinforcing steel is combined with clipping ground tackle body of the present utility model, make original prestressing force obtain effective maintenance to a certain extent.After cutting off former presstressed reinforcing steel, adopt conventional tensioning equipment in time to remain pre-stress system mend in time, guarantee the working properly of pre-stress system.
When the utility model is used, adopt dovetail coupling assembling, high-strength bolt device to combine with metal solder technique, utilize folding assembling mode to guarantee that the prestressing force force transfer bodies such as steel strand in former pre-stress system or high tensile reinforcement can access effective clamping and stressed.
The utility model is applied to apply prestressed Engineering System, at needs, to applying when local solution is carried out at prestressed position except prestressing force transformation, adopts.Its beneficial effect is that solved at present cannot be to having applied prestressed engineering structures, the pre-stress system running in transformation process cannot locally discharge and prestress engineering structure of modification in produce because prestressing force discharges structural damage and the engineering harm problem causing.
Accompanying drawing explanation
Fig. 1 is the structural representation of train wheel bridge;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the right view of Fig. 1;
Fig. 4 is lower plate structural representation;
Fig. 5 is the top view of Fig. 4;
Fig. 6 is the right view of Fig. 4;
Fig. 7 is that train wheel bridge dovetail groove is connected with lower plate dovetail boss the structural representation being combined into one;
Fig. 8 is the right view of Fig. 7;
Fig. 9 is structural representation of the present utility model,
Figure 10 is the right view of Fig. 9.
In figure: 1-train wheel bridge, the 101-the second semi-circular presstressed reinforcing steel anchor hole, 102-dovetail boss, the 103-the second location fastening through-hole, the 104-the second bevel for welding, 2-lower plate, the 201-the first semi-circular presstressed reinforcing steel anchor hole, 202-dovetail groove, the 203-the first location fastening through-hole, the 204-the first bevel for welding, 3-high-strength bolt.L-upper and lower clamping plate length, L1-both sides the first location fastening through-hole spacing, N-the first location fastening through-hole fore-and-aft clearance, W-upper and lower clamping plate width, H-train wheel bridge height, H1-lower plate height, D-large stomidium footpath, d-small end aperture, h-dovetail boss height, h1-depth of dovetail.
The specific embodiment
Below in conjunction with accompanying drawing and by construction embodiment, the utility model is elaborated.
As shown in Figures 9 and 10: a kind of rear combination grip formula prestressed anchor, this prestressed anchor comprises train wheel bridge 1 and lower plate 2, referring to Fig. 4, Fig. 5 and Fig. 6: lower plate 2 upper surfaces are provided with the first semi-circular presstressed reinforcing steel anchor hole 201, referring to Fig. 1, Fig. 2 and Fig. 3: train wheel bridge 1 lower surface is provided with the second semi-circular presstressed reinforcing steel anchor hole 101, referring to Fig. 7 and Fig. 8: the first semi-circular presstressed reinforcing steel anchor hole 201 and the corresponding fastening of the second semi-circular presstressed reinforcing steel anchor hole 101, the first semi-circular presstressed reinforcing steel anchor hole 201 both sides are provided with dovetail groove 202, the second semi-circular presstressed reinforcing steel anchor hole 101 both sides are provided with dovetail boss 102, dovetail boss 102 is slidably connected with dovetail groove 202, lower plate dovetail groove 202 positions are provided with the first location fastening through-hole 203, train wheel bridge dovetail boss 102 positions are provided with the second location fastening through-hole 103, high-strength bolt 3 is arranged on the first location fastening through-hole 203 and the second location fastening through-hole 103, train wheel bridge 1 is fixedly connected with lower plate 2.
The first semi-circular presstressed reinforcing steel anchor hole 201 and the second semi-circular presstressed reinforcing steel anchor hole 101 are provided with large small end, and large stomidium footpath D is 28mm, and small end aperture d is 18mm, and small end hole depth is 18mm; Train wheel bridge length L is 110mm, and train wheel bridge width W is 68mm, and train wheel bridge height H is 39mm, and dovetail boss height h is 9mm, and both sides the first location fastening through-hole spacing L1 is 70mm.Lower plate length, lower plate width are identical with train wheel bridge, and lower plate height H 1 is 30mm; Depth of dovetail h1 is identical with dovetail boss height, each dovetail groove 202 is provided with two first location fastening through-holes 203, the first location fastening through-hole fore-and-aft clearance N is 46mm, and both sides the second location fastening through-hole spacing is identical with both sides the first location fastening through-hole spacing L1.
For in use, be convenient to the seam crossing welding to upper and lower clamping plate, in both sides, lower plate upper end, be provided with the first bevel for welding 204, in both sides, train wheel bridge lower end, be provided with the second bevel for welding 104.
For prevent upper and lower clamping plate initially in conjunction with time slide, dovetail boss 102 is provided with the gradient with dovetail groove 202 bonding surfaces.
The utility model has been applied to case history, and construction sequence is roughly as follows: prestressed structure first to be transformed adopts effective means, as adopted non-destructive testing, damaging and survey or consult the modes such as drawing, verifies presstressed reinforcing steel present position; Presstressed reinforcing steel surrounding concrete is cut, avoid presstressed reinforcing steel to cause damage as far as possible; Divest bellows sheath and the inner grouting material that need to transform position, the presstressed reinforcing steel of needs transformation place is completely out exposed; By the upper and lower clamping plate of this utility model, by dovetail coupling assembling, be that dovetail groove and the assembling of dovetail boss put in place, and by high-strength bolt, locate locked; Adopt welding procedure that seam crossing is welded, particularly the reserved bevel for welding welding in both sides is filled and led up; The utility model is pushed to slide and needs installation site, depending on scene, need between this device and engineering structures, billet be installed, to prevent concrete local failure; Assembling intermediate plate, and be in place, adopt specific device that intermediate plate is stuck; Cut off presstressed reinforcing steel; Adopt common tensioning equipment that presstressed reinforcing steel is mended and opened in time; Adopt the clean slurry of concrete to seal prestress clamp.
Upper and lower clamping plate of the present utility model preferably adopt the steel in the scope of metal hardness index HRC30-35 to make, and the surperficial antirust processing such as zinc-plated or flange are carried out on surface.Intermediate plate adopts conventional OVM series intermediate plate, and clip surface adopts carbonitriding technology to process, and amount of recovery should not be greater than 6mm, and metal hardness index adopts HRA75-90.High-strength bolt adopts and is not less than 8.8 ranks, and diameter is φ 12.
Claims (5)
1. combination grip formula prestressed anchor after a kind, it is characterized in that: this prestressed anchor comprises train wheel bridge (1) and lower plate (2), lower plate (2) upper surface is provided with the first semi-circular presstressed reinforcing steel anchor hole (201), train wheel bridge (1) lower surface is provided with the second semi-circular presstressed reinforcing steel anchor hole (101), the first semi-circular presstressed reinforcing steel anchor hole (201) and the corresponding fastening of the second semi-circular presstressed reinforcing steel anchor hole (101), the first semi-circular presstressed reinforcing steel anchor hole (201) both sides are provided with dovetail groove (202), the second semi-circular presstressed reinforcing steel anchor hole (101) both sides are provided with dovetail boss (102), dovetail boss (102) is slidably connected with dovetail groove (202), lower plate dovetail groove (202) position is provided with the first location fastening through-hole (203), train wheel bridge dovetail boss (102) position is provided with the second location fastening through-hole (103), high-strength bolt (3) is arranged on the first location fastening through-hole (203) and the second location fastening through-hole (103), train wheel bridge (1) is fixedly connected with lower plate (2).
2. a kind of rear combination grip formula prestressed anchor as claimed in claim 1, is characterized in that: both sides, lower plate upper end are provided with the first bevel for welding (204), and both sides, train wheel bridge lower end are provided with the second bevel for welding (104).
3. a kind of rear combination grip formula prestressed anchor as claimed in claim 1, is characterized in that: dovetail boss (102) is provided with the gradient with dovetail groove (202) bonding surface.
4. a kind of rear combination grip formula prestressed anchor as described in claim 1,2 or 3, it is characterized in that: the first semi-circular presstressed reinforcing steel anchor hole (201) is provided with large small end with the second semi-circular presstressed reinforcing steel anchor hole (101), large stomidium footpath (D) is 28mm, small end aperture (d) is 18mm, and small end hole depth is 18mm.
5. a kind of rear combination grip formula prestressed anchor as claimed in claim 4, it is characterized in that: train wheel bridge length (L) is 110mm, train wheel bridge width (W) is 68mm, train wheel bridge height (H) is 39mm, dovetail boss height (h) is 9mm, and both sides the first location fastening through-hole spacing (L1) is 70mm; Lower plate height (H1) is 30mm; Depth of dovetail (h1) is identical with dovetail boss height, each dovetail groove (202) is provided with two first location fastening through-holes (203), the first location fastening through-hole fore-and-aft clearance (N) is 46mm, and both sides the second location fastening through-hole spacing is identical with both sides the first location fastening through-hole spacing (L1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420293206.3U CN203977709U (en) | 2014-06-04 | 2014-06-04 | A kind of rear combination grip formula prestressed anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420293206.3U CN203977709U (en) | 2014-06-04 | 2014-06-04 | A kind of rear combination grip formula prestressed anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203977709U true CN203977709U (en) | 2014-12-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420293206.3U Withdrawn - After Issue CN203977709U (en) | 2014-06-04 | 2014-06-04 | A kind of rear combination grip formula prestressed anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203977709U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141363A (en) * | 2014-06-04 | 2014-11-12 | 兰州铁信土建新技术有限公司 | Rear combined clamping type prestress anchor |
| CN106284849A (en) * | 2016-09-26 | 2017-01-04 | 昆山生态屋建筑技术有限公司 | A kind of splicing rack deformed bar anchorage |
| CN109736441A (en) * | 2019-01-14 | 2019-05-10 | 北京京东幽谷旅游开发有限公司 | A kind of wooden wall attachment device |
| CN110258931A (en) * | 2019-07-11 | 2019-09-20 | 兰州恒驰预应力科技有限公司 | A kind of clipping anchor of prestressing force |
-
2014
- 2014-06-04 CN CN201420293206.3U patent/CN203977709U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141363A (en) * | 2014-06-04 | 2014-11-12 | 兰州铁信土建新技术有限公司 | Rear combined clamping type prestress anchor |
| CN104141363B (en) * | 2014-06-04 | 2016-08-24 | 兰州铁信土建新技术有限公司 | Combination grip formula prestressed anchor after one |
| CN106284849A (en) * | 2016-09-26 | 2017-01-04 | 昆山生态屋建筑技术有限公司 | A kind of splicing rack deformed bar anchorage |
| CN109736441A (en) * | 2019-01-14 | 2019-05-10 | 北京京东幽谷旅游开发有限公司 | A kind of wooden wall attachment device |
| CN109736441B (en) * | 2019-01-14 | 2019-11-22 | 北京京东幽谷旅游开发有限公司 | A kind of wooden wall attachment device |
| CN110258931A (en) * | 2019-07-11 | 2019-09-20 | 兰州恒驰预应力科技有限公司 | A kind of clipping anchor of prestressing force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |