CN202519667U - Pre-stressed anchorage device structure - Google Patents
Pre-stressed anchorage device structure Download PDFInfo
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- CN202519667U CN202519667U CN2012201683948U CN201220168394U CN202519667U CN 202519667 U CN202519667 U CN 202519667U CN 2012201683948 U CN2012201683948 U CN 2012201683948U CN 201220168394 U CN201220168394 U CN 201220168394U CN 202519667 U CN202519667 U CN 202519667U
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- drag
- line
- ground tackle
- arc clip
- letting
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Abstract
The utility model discloses a pre-stressed anchorage device structure which is composed of an inhaul cable, at least two arc clamp pieces arranged around the inhaul cable and an extruding sleeve for extruding the arc clamp pieces to clamp the inhaul cable. The pre-stressed anchorage device structure uses the extruding sleeve to exert radial action force on the arc clamp pieces so as to greatly increase friction resistance between the arc clamp pieces and the inhaul cable, meet requirements for constant-resistance deformation or vibration resistance of an anchor cable. Furthermore, the pre-stressed anchorage device structure is simple in structure, convenient to manufacture and easy to popularize.
Description
Technical field
The utility model relates to the ground anchorage technical field, relates in particular to a kind of letting and presses the ground tackle structure.
Background technology
One of main means of rock-reinforcing are through anchor pole or anchorage cable anchoring, and the loading characteristic of both anchorings is that the distortion of anchor cable must be coordinated with the distortion of geotechnical body mutually, have surpassed the maximum deformation quantity that anchor cable allows like the deflection of rock mass, and anchor cable can be broken.Surrender anchor pole or anchor cable device are a kind ofly can keep predetermined anchored force and can form anchor pole or the anchor cable that certain " distortion " amount is eliminated vibration energy or adapted to distortion again, are also referred to as surrender anchor pole (rope), constant-resistance is out of shape anchor pole (rope), pressure-relieving achor bar (rope).
Surrender anchor pole commonly used or anchor cable device are used for the Deformation control of deep formation rock burst or large deformation, geotechnical slope and foundation ditch etc. in the geotechnical engineering.The whole stress of surrender anchor pole or anchor cable device is " bullet is moulded " property seemingly; When the deflection of rock mass makes the pulling force of anchor pole or anchor cable surpass the design yield force; Anchor bar body between interior anchoring section and the outer anchoring section or anchor cable cognition are keeping being similar to the tension test of steel under the constant situation of pulling force automatic " elongation ", and tensile stress reaches yield limit; Pulling force is constant, and the body of rod increases.
Publication number discloses a kind of pressure ground tackle that lets for the one Chinese patent application of " CN 102182812 A ", comprises extrusion head, lets gland tube and the dowel, described extrusion head be the cylinder that the bottom has the conical surface, flexibly connects with dowel to be integral; Described extrusion head places and lets in the gland tube, lets gland tube inwall be provided with the raised face (RF) that matches with the conical surface of extrusion head bottom, lets the gland tube be preferably the steel pipe that inwall has lug, nib, the raised face (RF) of the end of lug, nib for matching with the conical surface of extrusion head.Above-mentioned patent is disclosed to let to press ground tackle be to utilize the extruding of constant-resistance body to let the gland tube produce plastic deformation, and drag-line is produced constant resistance, if but injecting cement paste is full inadequately or during the sleeve stiffness variation, then cause resistance to change easily.
Bulletin discloses a kind of pressure ground tackle that lets for the Chinese patent of " CN201261882Y "; Comprise extruded sleeve and anchoring medium; The extruding of extruded sleeve and anchoring medium is anchored to form on the presstressed reinforcing steel and lets the pressure ground tackle; Described anchoring medium is that cross section is a spring wire witha circular, described presstressed reinforcing steel or steel strand or steel tendon or have the unbonded prestressing tendon of sleeve pipe, and described unbonded prestressing tendon is processed by steel strand or steel tendon.This lets presses ground tackle can let the large deformation geologic body in anchoring, the injurious deformation appropriateness discharged, and has safeguarded the long-term effect of anchoring, guarantees the reliability of anchoring, is a kind of solution that better lets compression functions for the engineering operation provides safety guarantee.
Bulletin discloses a kind of quake-proof anchor rope for the Chinese patent of " CN 101666093 B "; Comprise free section and anchoring section; Anchoring section is provided with the antidetonation anchor device, and the antidetonation anchor device comprises loaded plate, antidetonation ground tackle and permanent ground tackle, and anchor cable passes loaded plate and passes antidetonation ground tackle and permanent ground tackle successively; The antidetonation ground tackle is for setting the slidably extruded sleeve structure of maximum anchorage power; The antidetonation ground tackle is pressed on the loaded plate inboard, and permanent ground tackle is the standard extruded sleeve, between permanent ground tackle and the antidetonation ground tackle determining deviation is set.The anchor point of this patent concentrates on the anchor cable afterbody loaded plate, and many anchor cable muscle are isometric setting, and the antidetonation ground tackle is extruded sleeve structure slidably, and its internal circular surfaces is provided with anti-skidding line.Antidetonation ground tackle in this structure is the friction that utilizes between extruded sleeve and the drag-line, and drag-line is produced constant resistance.Injecting cement paste is little to the influence of resistance size, but because it mainly relies on the friction generates resistance between extruded sleeve and the drag-line, and the difficult control of radial effect between extruded sleeve and the drag-line causes this resistance size unreliable, unreliable to the antidetonation function.
Summary of the invention
The utility model provides a kind of letting press the ground tackle structure, is applied to let the pressure anchor cable, has constant-resistance distortion and function of seismic resistance, has solved existing ground tackle drag-line and the unmanageable problem of extruded sleeve support resistance of pressing that let.
A kind of letting pressed the ground tackle structure, is made up of the compression sleeve that drag-line, at least two are clamped drag-line around the arc clip and the extruding arc clip of drag-line setting.
If intermediate plate quantity is too much, can cause assembly difficulty to increase, and can't assemble, preferred, the quantity of said arc clip is two or three.
If adjacent clips is close to, can offset the chucking power of part arc clip to drag-line, cause resistance not enough; Therefore need leave certain surplus; And adjacent clips interval radian is excessive, then causes intermediate plate and drag-line contact area too small, and resistance is not enough equally; Preferably, the interval radian of adjacent two arc clips is 5～10 °.
Above-mentioned letting presses the assembling process of ground tackle following: with compression sleeve, arc clip, drag-line is coaxial is set on together; Then compression sleeve is applied active force; Because the hardness of compression sleeve is less than the hardness of arc clip, under the effect of extruding force, compression sleeve generation plastic deformation; With the arc clip stirrup, thereby arc clip is clamped drag-line.
Therefore under reset condition, the diameter of compression sleeve is bigger, and can easily arc clip be contained and be set on the drag-line, but arc clip also can't locate, and therefore preferred, there is the position limiting convex ring of inside extension at least one end of described compression sleeve end.
More preferably, described compression sleeve two ends are equipped with the position limiting convex ring that extends internally, and position limiting convex ring is close at described arc clip two ends, and arc clip is stuck between two position limiting convex rings, help to let the assembling of pressing ground tackle.
The wall that described arc clip is close to drag-line can be the light face, and this moment, intermediate plate and drag-line contact surface were maximum, but friction factor is little; Be preferably, the wall that said arc clip is close to drag-line is the exasperate structure, to improve friction system; More preferably; The wall that said arc clip is close to drag-line has the point-like particle, and the point-like particle embeds and draws in the element, can improve the frictional resistance between drag-line and arc clip.
Another kind of scheme is, the wall that said arc clip is close to drag-line is a corrugated surface, and ripple can oppress that drag-line is local, and deformation takes place; Increase the frictional resistance between drag-line and arc clip; More preferably, the vertical drag-line setting of the ripple of said corrugated surface, frictional resistance is maximum under this condition.
If the drag-line skidding distance is long, drag-line will withdraw from arc clip, excess of stroke phenomenon occurs, causes anchor cable forfeiture load power, takes place for avoiding this kind situation, and the end of said drag-line is provided with the end anchor, and the end anchor is fixedly connected with drag-line.
The utility model utilizes compression sleeve that arc clip is applied active force radially, can increase the frictional resistance between arc clip and drag-line greatly, thereby satisfies anchor cable antidetonation needs, and simple in structure, easily manufactured, is easy to promote.
Description of drawings
Fig. 1 presses the ground tackle axial section for the utility model lets;
Fig. 2 presses ground tackle A-A sectional drawing for shown in Figure 1 letting;
Fig. 3 is a kind of inner peripheral surface structural representation of arc clip;
Fig. 4 is the axial section of another kind of arc clip.
The specific embodiment
As illustrated in fig. 1 and 2, a kind of letting pressed the ground tackle structure, is mainly used in to let to press in the anchor cable (like the disclosed quake-proof anchor rope of CN 101666093B), and it is made up of the end anchor 4 that lets gland tube 1, two arc clips 2, drag-lines 3 and be located at drag-line 3 ends.The quantity of arc clip 2 also can be selected more than 2, preferably 2 or 3, too much causes the assembling difficulty.Spacing distance is 5～10 ° between the adjacent in addition arc clip 2, avoid being close to or spacing distance excessive, cause the resistance between they and the drag-line too small.
As shown in Figure 1, there is the position limiting convex ring 101 of inside extension end, compression sleeve 1 two ends, and arc clip 2 is stuck between two position limiting convex rings 101, and the width of position limiting convex ring 101 is less than the thickness of arc clip 2.Drag-line adopts general steel strand, also can be composited by carbon fiber and glass fiber, and weight reduction also improves intensity.
If arc clip 2 is the light face with the wall that drag-line 3 is close to, then can cause friction factor too small, therefore preferably selecting is the exasperate structure, as point-like particle or ripple are set.As shown in Figure 3, the wall that arc clip 2 is close to drag-line is provided with many point-like particles 201, and the point-like particle can embed in the drag-line, to increase the resistance of 2 of drag-line 3 and arc clips.As shown in Figure 4, the wall that arc clip 2 is close to drag-line 3 is a corrugated surface, and ripple 202 vertical drag-lines 2 are provided with.
Above-mentioned letting presses the assembling process of ground tackle following:
With compression sleeve 1, arc clip 2, drag-line 3 coaxial being set on together; Then compression sleeve 1 is applied active force; Because the hardness of compression sleeve 1 is less than the hardness of arc clip 2; Under the effect of extruding force, plastic deformation takes place in compression sleeve 1, and compression sleeve 1 extruding arc clip 2 is clamped drag-line 3.
Because arc clip 2 applies constant chucking power to drag-line 3 all the time, so it also can keep constant with resistance between the drag-line 3, and existing the letting of this resistance ratios press the ground tackle resistance to increase a lot, can be applied in the quake-proof anchor rope.
Claims (10)
1. one kind lets and presses the ground tackle structure, it is characterized in that, is made up of the compression sleeve that drag-line, at least two are clamped drag-line around the arc clip and the extruding arc clip of drag-line setting.
2. according to claim 1 letting pressed the ground tackle structure, it is characterized in that the quantity of said arc clip is two or three.
3. according to claim 1 letting pressed the ground tackle structure, it is characterized in that the interval radian of adjacent two arc clips is 5～10 °.
4. according to claim 1 letting pressed the ground tackle structure, it is characterized in that there is the position limiting convex ring of inside extension at least one end of described compression sleeve end.
5. according to claim 4 letting pressed the ground tackle structure, it is characterized in that described compression sleeve two ends are equipped with the position limiting convex ring that extends internally, and position limiting convex ring is close at described arc clip two ends.
6. according to claim 1 letting pressed the ground tackle structure, it is characterized in that the wall that said arc clip is close to drag-line is the exasperate structure.
7. according to claim 6 letting pressed the ground tackle structure, it is characterized in that the wall that said arc clip is close to drag-line has the point-like particle.
8. according to claim 6 letting pressed the ground tackle structure, it is characterized in that the wall that said arc clip is close to drag-line is a corrugated surface.
9. according to claim 8 letting pressed the ground tackle structure, it is characterized in that the vertical drag-line setting of the ripple of said corrugated surface.
10. according to claim 1 letting pressed the ground tackle structure, it is characterized in that the end of said drag-line is provided with the end anchor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201683948U CN202519667U (en) | 2012-04-19 | 2012-04-19 | Pre-stressed anchorage device structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201683948U CN202519667U (en) | 2012-04-19 | 2012-04-19 | Pre-stressed anchorage device structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202519667U true CN202519667U (en) | 2012-11-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201683948U Expired - Lifetime CN202519667U (en) | 2012-04-19 | 2012-04-19 | Pre-stressed anchorage device structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202519667U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132518A (en) * | 2013-03-19 | 2013-06-05 | 苏州市能工基础工程有限责任公司 | Modified clamping piece type anchorage device |
-
2012
- 2012-04-19 CN CN2012201683948U patent/CN202519667U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132518A (en) * | 2013-03-19 | 2013-06-05 | 苏州市能工基础工程有限责任公司 | Modified clamping piece type anchorage device |
| CN103132518B (en) * | 2013-03-19 | 2015-05-27 | 苏州市能工基础工程有限责任公司 | Modified clamping piece type anchorage device |
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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 |
Granted publication date: 20121107 |
|
| CX01 | Expiry of patent term |