CN1031726C - Ground anchor - Google Patents
Ground anchor Download PDFInfo
- Publication number
- CN1031726C CN1031726C CN 93105645 CN93105645A CN1031726C CN 1031726 C CN1031726 C CN 1031726C CN 93105645 CN93105645 CN 93105645 CN 93105645 A CN93105645 A CN 93105645A CN 1031726 C CN1031726 C CN 1031726C
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- China
- Prior art keywords
- anchor
- foot
- endless member
- ground
- tube portion
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- 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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Abstract
The present invention relates to a pressure supporting ground anchor used for anchoring hard base rock. The present invention is composed of a first circular component, a second circular component, an anchor head component and tension components, wherein the first circular component and the second circular component are respectively composed of a cylinder part, a connecting component and a foot part. When the present invention is arranged, the top of a primary drilled hole is broached, and the ground anchor is arranged in the broached part. The diameters of the first circular component and the second circular component are enlarged by pulling the tension components, the first circular component and the second circular component push and press the inner wall of the broached part, and hence, the tensile force generated by a slide stratum for the ground anchor is resisted to prevent ground slide. The present invention is used, the loading capacity of the ground anchor is greatly improved, and the present invention has the advantages of no need of a curing period, a short construction period and less construction quantity.
Description
The present invention relates to enlarged diameter type and ground anchor, this earth anchor can be arranged in the reamer of hard ground or basement rock, is characterized in that with hard ground or basement rock be anchor object.
In the past earth anchor mostly is and is applied to soft foundation, be to utilize the method for squeezing into and being pressed into, the tension part that will have the anchor body directly inserts soft ground, and until the degree of depth of setting, upwards spur tension part then, the blade and the plate on top are opened, thereby form anchor shape body, produce resistance by the supporting role of blade and plate.But the major defect that this earth anchor exists is: under the tension of setting, the anchor body is effective.Because the difference of soil property, maximum tension resistance will be very different, under being subjected to the situation of unusual pulling force to its effect, anchor cognition in the soft foundation is extracted by former state, anchor body in the hard place base then can be bent slightly, or the bound fraction of tension part and anchor body is damaged, the tension resistance of this earth anchor is very little.
In addition, for the anchorage zone of rock stratum, also has a kind of friction-type earth anchor construction method as earth anchor, after promptly using boring mechanic once to be holed in the rock stratum, the anchor body is inserted in this boring, and inject mortar, the tension part of anchorage part is closely contacted with ground and fix.In this construction method,, therefore great in constructing amount because the tension resistance of earth anchor is very little.And, for making anchorage part can sustain the pulling intensity of design, must increase the anchorage length of setting widely, if but anchorage length surpasses 6-7 meters (m), to be difficult to guarantee that the tension load distributes equably in this interval, under the effect of tension load, peel off between anchoring body and the mortar and between mortar and the ground.Peeling off is that outermost end ecto-entad from anchorage part launches successively, that is to say, because peeling off on the whole anchorage length can appear in the destruction of this progressivity, so that anchor device is extracted, thereby causes the failure of engineering.In addition, if infiltration appears in anchorage part,, can cause the problem that anchoring quality is bad along with the deterioration of mortar quality.It below all is the disadvantage that this class earth anchor exists.
The present invention proposes for addressing the above problem, its purpose is to provide a kind of novel enlarged diameter type and the earth anchor of a pressure type, this earth anchor can the hard ground or basement rock as the anchor object of anchor body, utilize anchor body and reamer (at hard ground or the bigger decomposed rock of intensity, soft rock, reamer on the basement rock such as hard rock after the boring) hole wall pressing effect, and the anchor external surface after the expansion diameter is for the supporting force of reamer roof face, produce the drawing tension of earth anchor, the wedging force and the pulling force that produce because of drawing tension are increased pro rata, variation by anchor head angle of taper partly, slip ring awl angle of release degree is changed, thereby come the suitably corresponding hard ground that various differences are allowed compress variation that has.
Above-mentioned purpose of the present invention realizes by following measure.Surpass basement rock such as the higher decomposed rock of 50 hard ground and intensity, soft rock, hard rock with standard penetration test N value as anchorage zone, on such hard ground or rock stratum, hole with certain diameter, at this moment, if the anchor body of enlarged diameter type earth anchor is inserted in this boring, desire is wanted expansion diameter, and enlarged diameter type anchor body can expansion diameter yet.Therefore, for can be with hard ground or rock stratum as anchorage zone, must be to the further expansion diameter of head portion of the once boring of anchorage zone.
Enlarged diameter type of the present invention and ground anchor is characterized in that: with certain diameter to hard ground or rockhole after, offer reamer again, this reamer is that the once boring of the anchorage zone of hard ground or rock stratum is expanded behind the diameter and formed; Earth anchor of the present invention is by constituting with the lower part:
Outer shroud, freely expansion diameter;
Slip ring, expansion diameter freely, and can outer shroud be launched in above-mentioned outer shroud inner slide, this slip ring can be set up one or more;
The anchor head part is set at the inboard of above-mentioned slip ring, by sending to the wedging of pulling direction, makes above-mentioned slip ring expansion diameter in the inner slide of above-mentioned outer shroud, and outer shroud is launched;
Tension part, the one end partly is connected with above-mentioned anchor head, and the other end is outstanding to ground surface.
Adopt the present invention can reach following effect:
1. because the bearing capacity that can produce supporting force to hard ground or basement rock, wedging force and be produced because of the pressure-bearing effect of the roof of outer shroud and reamer, so the anchored force of earth anchor is very big.
2. wedging force increases with the increase of pulling force proportionally, and the compress variation of the hard ground that is caused by wedging force also increases.
3. by changing the thickness of outer shroud and slip ring, can make its compress variation of allowing that adapts to the hard ground easily, therefore can greatly increase the excursion of expanded in diameter.
4. after tension part is tightened up, can produce the tension resistance, so but do not need preserving period and reduction of erection time, reduce construction volume, cost saving.
Because of the anchor body of earth anchor be enlarged diameter type be again a pressure type, so can not produce the progressive failure of anchorage part as the friction-type earth anchor.
6. send to the wedging of pulling direction by the anchor head part, can make slip ring expansion diameter when the inner surface along outer shroud slides at an easy rate, and make the outer shroud expansion diameter reliably.
7. even infiltration appears in anchorage zone, make the quality deterioration of mortar, can not produce the bad problem of anchoring yet, reach excellent effect of the present invention.
Accompanying drawing is simply described as follows;
Figure 1 shows that an embodiment of earth anchor of the present invention, is the view after the expansion diameter of earth anchor in the reamer of rock stratum.
Fig. 2 is the view of earth anchor shown in Figure 1 before expanded in diameter.
Figure 3 shows that another embodiment of earth anchor of the present invention, is the view after the expansion diameter of earth anchor in the reamer of rock stratum.
Fig. 4 is the view of earth anchor shown in Figure 3 before expanded in diameter.
Fig. 5 when using earth anchor of the present invention, the key diagram of its action effect.
Fig. 6 is for offering the schematic diagram of the reaming bit that reamer uses in the rock stratum, illustrate to expand the state when outstanding from drill main body of blade that diameter uses.
Fig. 7 is the schematic diagram of reaming bit shown in Figure 6, illustrates to expand blade that diameter uses outstanding state from drill main body.
Wherein, A-earth anchor; 1-the first endless member (outer shroud); 11-tube portion; 12-foot; 13-otch; 15-connector; Ox; 2-the second endless member (slip ring); 21-tube portion; 22-foot; 3-anchor head part; 4-tension part; P-earth anchor pulling force; Q-to the supporting force of hole wall; R-wedging force; B-reaming bit; 101-drill main body; 111-blade is installed window; 112-reaming blade; 114-cutter head; 103-expansion diameter piston.
Below, one embodiment of the present of invention are described in conjunction with the accompanying drawings.
In Fig. 1 to Fig. 4, first endless member 1 is made of the narrower link 15 of the width of tube portion 11, a plurality of foot 12 (for example three) and connection foot and tube portion, is provided with pair of L-shaped groove 16 above foot 12.First endless member 1 also can be made as depicted in figs. 1 and 2, and footing portion 12 and tube portion 11 form whole.For example, above-mentioned first endless member can be designed to: with an end of cylindrical body tube portion as first endless member, below tube portion, length direction along cylindrical body is provided with otch 13, thereby form foot 12, offer at the boundary member of tube portion 11 and foot 12 and to cut 14, be provided with pair of L-shaped groove 16 in the portion of ending of foot.
Second endless member 2 except that its diameter than first endless member 1 little, shape is roughly identical with first endless member 1 with structure, the link 25 narrower by the width of tube portion 21, a plurality of foot 22 (for example three) and connecting cylinder portion and foot constitutes, and is provided with the pair of L-shaped groove on the top of foot 22.
As depicted in figs. 1 and 2, the foot 22 of second endless member 2 can form whole with tube portion 21.For example, can be with an end of cylindrical body tube portion, below tube portion as second endless member, length direction along cylindrical body is provided with otch 23, thereby form foot 22, at the boundary member of tube portion 21 and foot 22 grooving is set, and is provided with the pair of L-shaped groove on the top of foot.
On the inner surface of first endless member, the guide block of convex is set along its length partly, its two ends form the limiter of second endless member.On the terminal inner surface of first endless member 1, the tube portion top outer peripheral face that is formed with taper surface 121, the second endless members 2 forms taper 211, so that the tube portion of second endless member inserts within first endless member easily.
On the external surface of second endless member 2, be provided with guide block 24 along its length; On the terminal part inner surface of second endless member 2, be formed with taper 221.
The inwall of first endless member constitutes, but setting-in cooperates the guide block 24 on the second endless member external surface, and can slide; The inwall of second endless member constitutes, but setting-in cooperates the exceptionally lip-deep guide block 32 of anchor head, and can slide.First endless member, second endless member and anchor head part can be set on separately the position, thereby combine.
Fig. 3 and Fig. 4 illustrate an alternative embodiment of the invention, and its structure and shape are roughly same as the previously described embodiments, and identical component are represented with identical label.In this embodiment, first endless member 1 is by tube portion 11, a plurality of foot 12 (for example three) and utilize the wider width that method such as welding couples together tube portion and foot and link 15 formations of thinner thickness.In addition, second endless member 2 also can by tube portion 21, a plurality of foot 22 (for example three) and the width that utilizes method such as welding that tube portion and foot are coupled together be narrower and link 25 formations of thinner thickness.
Claims (1)
1. enlarged diameter type and ground anchor, it is characterized in that: this earth anchor can the hard ground or basement rock as the anchor object ground, by set diameter to hard ground or basement rock boring after, reaming is carried out in once boring to the anchorage zone of hard ground or rock stratum, this earth anchor is arranged in the reaming part, and this earth anchor has following part:
First endless member (1), constitute by tube portion (11), foot (12) and with the link (15) that tube portion (11) and foot (12) couple together, expansion diameter freely, the width of link (15) is narrower, and the top of foot (12) offers grooving (16);
Second endless member (2) can be set up one or morely in the inboard of first endless member (1), and the foot (22) that is connected with tube portion by tube portion (21) and by the narrower link of width (25) constitutes, freely expansion diameter;
Anchor head part (3), by sending to the wedging of pulling direction, internal face along second endless member (2) slides in the longitudinal direction, and second endless member (2) is slided in the longitudinal direction along the internal face of first endless member (1), meanwhile, make first and second endless members (1), (2) expansion diameter;
Tension part (4), the one end partly is connected with anchor head, and the other end stretches out to pulling face; And, when the earth anchor expansion diameter, be the boundary with the set grooving in the top of foot (16), the top of foot (121) are the roof face (B1) that umbrella is launched the pushing reamer, and the circumference wall (B2) of the bottom of foot (122) pushing reamer.The circumference wall (B2) of the bottom of portion (122) pushing reamer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93105645 CN1031726C (en) | 1993-05-10 | 1993-05-10 | Ground anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93105645 CN1031726C (en) | 1993-05-10 | 1993-05-10 | Ground anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1095126A CN1095126A (en) | 1994-11-16 |
| CN1031726C true CN1031726C (en) | 1996-05-01 |
Family
ID=4985860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93105645 Expired - Fee Related CN1031726C (en) | 1993-05-10 | 1993-05-10 | Ground anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1031726C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MY156591A (en) * | 2011-03-25 | 2016-03-15 | Ang Wai Ming | Earth anchor |
| CN103114587A (en) * | 2013-02-06 | 2013-05-22 | 周卫 | Earth anchor device and mounting and dismounting method thereof |
| KR101358994B1 (en) * | 2013-11-01 | 2014-02-05 | (주)세종이엔씨 | Construction method of multi extending permanent anchor |
-
1993
- 1993-05-10 CN CN 93105645 patent/CN1031726C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1095126A (en) | 1994-11-16 |
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| Date | Code | Title | Description |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |