CN204311463U - A kind of Composite Bolt stake for slope reinforcement - Google Patents
A kind of Composite Bolt stake for slope reinforcement Download PDFInfo
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- CN204311463U CN204311463U CN201420797013.1U CN201420797013U CN204311463U CN 204311463 U CN204311463 U CN 204311463U CN 201420797013 U CN201420797013 U CN 201420797013U CN 204311463 U CN204311463 U CN 204311463U
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- anchor pole
- composite bolt
- anchor
- free segment
- anchoring section
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Abstract
The utility model discloses a kind of Composite Bolt stake for slope reinforcement, comprise anchor pole and injecting cement paste, injecting cement paste is filled in around anchor pole, anchor pole comprises free segment and anchoring section, and the free segment side of anchor pole is fixed with Grouting Pipe, Grouting Pipe and anchor pole integral, geotextiles is provided with outside the free segment of anchor pole, the top of the anchoring section of anchor pole is laterally fixed with reserved steel bar, and reserved steel bar and horizontal beam main tendon fix, and outside horizontal beam main tendon, erection has crossbeam.Dividing vertical and oblique two kinds of forms, by laying 3 ~ 6 anchor poles in the borehole, by changing anchoring section position in the borehole, effectively can improve stretch-draw prestressing force.It is good that this utility model has resistance to overturning, and bending resistance shear strength is large, can be used for top, roadbed side slope slope, toe and domatic reinforcement; Anchor pole aperture is large, and lateral attitude arranges that drilling hole amount is few, and each boring can place many reinforcing bars simultaneously, can reduce the layout of anchor cable between roadbed transverse direction, realize the effective reinforcing to side slope simultaneously.
Description
Technical field
The utility model belongs to road foundation stabilization works field, is specifically related to a kind of roadbed side slope reinforcement technology, especially a kind of for the stake of express highway roadbed side slope reinforcement Composite Bolt.
Background technology
Roadbed side slope comes down, to break away, to cave in etc. be the current speedway filled-up ground disease that especially high-fill roadbed is common, causes that the main cause of these disasters has heavy showers to wash away, retaining structure strength deficiency, upper load effect are excessive etc.Treatment measures conventional in current engineering mainly contain at top, slope or toe position steel pipe pile, on side slope surface, arrange the technology such as prestressed anchor by bored grouting technology.Steel pipe pile technology refers to placing steel tubes in small-sized boring, then sealing of hole is carried out by slip casing by pressure or concrete perfusion, form Cast-in-place Micropiles, then cast-in-place crossbeam is set at top and forms overall campshed, this technology has the advantages such as structural integrity is strong, technique is simple, cost is low, become disposal technology conventional in slope treatment at present, but this technology only arranges a steel pipe at bore inner, anchor pole is not set, therefore can not Shi Hanzhang at structure top end, cause structural strength low, and side slope surface reinforcing can not be used for.Prestressed anchor pole technology refers in domatic boring, implants anchor pole, carries out prestressed stretch-draw, anchoring after grouting.This technology is usually used in slope reinforcing, due to Shi Hanzhang in anchor pole, makes roadbed side slope present pressured state, prevents side slope from breakking away.But this technology bore diameter is less, prestressed anchor pole length is large, causes its shearing resistance, flexural strength low, cannot resist the soil body and to glide the anchor pole moment of flexure and shearing force that cause.
Chinese patent CN 101220597 A discloses a kind of geotechnical slope retaining structure, by well cementing technology, realizes the reinforcing to broken rock mass slope.But this patent is only applicable to the reinforcing of rock mass cut slope, for upper side slope, this reinforcing technique is inapplicable, and in this reinforcing technique, mini pile can only be in tilted layout simultaneously, can not vertically be arranged in curb position, restricted application.In work progress, this retaining structure need carry out drilling construction to each mini pile, difficulty of construction is large, and for the serious rock mass of fragmentation, often in work progress because vibration causes the collapse hole even side slope slump of fragmented rock body, the inner reinforcing bar of this retaining structure does not have Shi Hanzhang simultaneously, consolidation effect is not obvious, and side slope easily produces lateral sliding.
Utility model content
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of Composite Bolt stake for slope reinforcement is provided, divide oblique and vertical two kinds of forms, by changing anchoring section position in the borehole, effectively can improve stretch-draw prestressing force, it is good that this Composite Bolt stake has resistance to overturning, and bending resistance shear strength is large, can be used for top, roadbed side slope slope, toe and domatic reinforcement.
For achieving the above object, the utility model adopts following technical proposals:
A kind of Composite Bolt stake for slope reinforcement, comprise anchor pole and injecting cement paste, described injecting cement paste is filled in around anchor pole, and described anchor pole comprises free segment and anchoring section, the free segment side of described anchor pole is fixed with Grouting Pipe, described Grouting Pipe and anchor pole integral, be provided with geotextiles outside the free segment of described anchor pole, its effect is parcel free segment anchor pole, make anchor pole when prestressed stretch-draw and injecting paste material departs from, be convenient to stretch-draw, outside anchor pole, geotextiles should arrange 1 ~ 2 layer, and uses fixation with steel wire.The top of the anchoring section of described anchor pole is laterally fixed with reserved steel bar, and described reserved steel bar and horizontal beam main tendon fix, and outside described horizontal beam main tendon, erection has crossbeam, and at least two Composite Bolt stakes couple together by described crossbeam.
Described anchor pole quantity is at least three.
The diameter of described anchor pole is that Φ 20 ~ Φ 32 mm arranges 3 ~ 6 according to the boring every hole of size.
The freedom length of described anchor pole is identical, makes anchor pole be positioned at the degree of depth of underground identical.
The freedom length of described anchor pole is different, and increases progressively gradually, makes anchor pole be positioned at the degree of depth difference of underground.For the side slope that destructiveness is larger, the anchor pole that should free segment be adopted different, its objective is as making anchoring section at different depth place, making anchored force uniform force, and increasing anchored force.Complex process when this structure construction is identical compared with free segment, only uses in the side slope that destructiveness is larger.
Described anchor pole carries out anchoring by concrete anchor pier and form anchor.
The beneficial effects of the utility model are:
1, compared with existing steel pipe pile technology, the utility model, by arranging anchor pole, can realize, to the prestressed stretch-draw of Composite Bolt stake, effectively improve strength of the mixing pile, can be used for domatic position reinforcement, expand this technology range of application.Horizontal reserved steel bar is set in position, stake top simultaneously, can overlaps with horizontal beam main tendon and weld, ensure that the connective stability of pile body and crossbeam, strengthen bulk strength and the stability of structure.
2, compared with pre existing stress mooring rod technique, the utility model pile body diameter is large, and inside arranges many prestressed anchors, and intensity is large, effectively can solve prestressed anchor technology cannot resist the soil body and to glide the anchor pole moment of flexure and shearing force drawback that cause, more effectively can strengthen the stability of side slope.
3, compared with pre existing stress mooring rod technique, stagger mutually in prestressed anchor anchoring section position, and when can avoid stretch-draw, anchoring section strength deficiency causes anchor pole to be extracted, and improves stretch-draw prestressing force, enhances column rigidity.The utility model dowel anchorage point is different, can realize effective anchoring of dowel, increases bulk strength.
4, the utility model anchor pole aperture is large, and lateral attitude arranges that drilling hole amount is few, and each boring can place many reinforcing bars simultaneously, can reduce the layout of anchor cable between roadbed transverse direction, realize the effective reinforcing to side slope simultaneously; Inner reinforcing bar Shi Hanzhang, integral rigidity is large, can be used for a gear of curb position, plays the effect of similar steel pipe pile.
Accompanying drawing explanation
Fig. 1 is the anchor pile structural representation of the utility model anchoring section at same depth;
Fig. 2 is the anchor pile structural representation of the utility model anchoring section at different depth place;
Fig. 3 is the anchor pile reinforcing side slope schematic diagram of the utility model anchoring section at uniform depth place;
Fig. 4 is the partial enlarged drawing at A place in Fig. 3;
Fig. 5 is the partial enlarged drawing at B place in Fig. 3;
Fig. 6 is the schematic diagram of the utility model anchoring section at the anchor pile reinforcing side slope at different depth place;
Fig. 7 is the schematic diagram that between the stake of the utility model two Composite Bolt, crossbeam connects;
In figure, 1, anchor pole, 2, free segment, 3, anchoring section, 4, injecting cement paste, 5, Grouting Pipe, 6, geotextiles, 7, concrete anchor pier, 8, form anchor, 9, reserved steel bar, 10, crossbeam, 11, horizontal beam main tendon.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in figs. 1-7, for the Composite Bolt stake of slope reinforcement, comprise anchor pole 1 and injecting cement paste 4, injecting cement paste 4 is filled in around anchor pole 1, anchor pole 1 comprises free segment 2 and anchoring section 3, free segment 2 side of anchor pole 1 is fixed with Grouting Pipe 5, and Grouting Pipe 5 is integral with anchor pole 1, is provided with geotextiles 6 outside the free segment 2 of anchor pole 1, anchor pile arrangement pitch is 1.5 ~ 2m, anchoring section 3 length is 1.5 ~ 4m, arranges reserved steel bar 9 at anchoring section 3 top, welds with horizontal beam main tendon 11.Outside horizontal beam main tendon 11, erection has crossbeam 10, and two Composite Bolt stakes couple together by crossbeam 10.Anchor pole 1 is HRB type indented bars, and intensity is not less than HRB335, and diameter is that Φ 20 ~ Φ 32 mm length is identical with drilling depth, arranges 3 ~ 6 according to the boring every hole of size.Anchor pole 1 carries out anchoring by concrete anchor pier 7 and form anchor 8.
Bore diameter is 15 ~ 30cm, and its degree of depth should exceed slide surface 2 ~ 3m, and should carry out hole process clearly after having holed, adopt slip casing by pressure in boring, grouting pressure controls at 0.4 ~ 1.0MPa.Grouting method should adopt single-pipe grouting or multitube slip casting.Single-pipe grouting refers to and arranges a Grouting Pipe in pile center, can adopt sleeve grouting process.Multitube slip casting refers to that the Grouting Pipe that every root anchor pole joins an equal length carries out slip casting.
Grouting Pipe 5 is sleeve valve barrel grouting steel pipe, and diameter is 2 ~ 4cm, and length is identical with anchor pole 1, and integrally welded with anchor pole 1, and at anchoring section 3 every the punching of 10 ~ 20cm length, aperture is 3 ~ 5mm.Grouting Pipe 5 slip casting end should carry out encapsulation process, then is connected with slurry filling machine.
Injecting paste material is cement mortar, and mortar adopts fine sand or ultra fine sand configuration, and label is not less than M30, and water/binder ratio is 0.8 ~ 1.2, and the mass fraction of sand is no more than 30%.
Geotextiles 6 is common building geotextiles, and its effect is parcel free segment anchor pole, makes anchor pole when prestressed stretch-draw and injecting paste material departs from, and be convenient to stretch-draw, outside anchor pole, geotextiles should arrange 1 ~ 2 layer, and uses fixation with steel wire.
Crossbeam 10 is reinforced concrete structure, and its effect multiple anchor pile is connected into an entirety, after anchor rod anchored completing, hole groove is longitudinally excavated in anchoring end, reinforcement placing also welds with reserved steel bar, and place template concreting, concrete strength is greater than C40.
For the construction technology of the Composite Bolt stake of slope reinforcement, comprise the following steps:
The first step, first place should be surveyed, according to the angle of inclination of field condition, position, landslide, the destroyed area size determination anchor pile degree of depth, aperture and domatic anchor pile, carry out place surveying setting-out afterwards, determine the parameter such as the particular location of reinforcing area Composite Bolt stake, pile spacing crossbeam size.
Second step: driller insertion, holes, and vertical form anchor pile boring should be vertical with road surface, and angle of inclination can not more than 1 degree, and in order to reach better anchoring effect, foot of hole answers increasing section, carries out hole process clearly after having holed.
3rd step, place prestressed anchor 1, anchor pole 1 should reach foot of hole, before placement anchor pole 1, first free segment 2 geotextiles 6 should be wrapped up, should install with the anchor pole 1 in hole simultaneously, can arrange handling reinforcement to ensure the spacing between anchor pole during installation.
4th step: after placing anchor pole 1, be in the milk to anchoring section 3, Grouting Pipe 5 is connected with slurry filling machine, when injecting cement paste 4 reaches free segment 2, stops slip casting.
5th step: reach after design strength is greater than 80% until anchoring section 3 injecting cement paste semi-finals degree, grouting treatment is carried out to free segment 2, carry out prestressed stretch-draw afterwards, during the formal stretch-draw of anchor pole, 105% ~ 110% of design load should be stretched to, then be undertaken carrying out anchoring after locking stretch-draw completes by setting.
6th step: after free segment injecting cement paste 4 reaches some strength, excavation concrete beam 10 cheats groove, and erection template, welds main muscle and reserved steel bar 9, concreting, complete the making of crossbeam.
Embodiment 1:
As shown in Figure 1, be vertical form anchor pile, determine reinforcement design scheme parameter according to scene, anchoring section, in the stake of same depth Composite Bolt, first at top, slope range finding unwrapping wire, determines bore position, according to the boring of design scheme parameter, after clear hole completes, place anchor pole, by sleeve valve grouting technology grouting sealing of hole, after open die forging injecting cement paste reaches some strength, excavation crossbeam hole groove, erection template, welds main muscle and reserved steel bar, concreting, completes the making of crossbeam.
Embodiment 2:
As shown in Figure 3, vertical form anchor pile and oblique form prestressed anchor pile, determine reinforcement design scheme parameter according to scene, and anchoring section is in the stake of same depth Composite Bolt, first at domatic range finding unwrapping wire, determine bore position, according to the boring of design scheme parameter, after clear hole completes, place anchor pole, be in the milk at anchoring section by sleeve valve grouting technology, reach after design strength 80% until injecting cement paste, grouting treatment is carried out to free segment, afterwards prestressed stretch-draw and anchoring are carried out to anchor pole.After open die forging injecting cement paste reaches some strength, excavation crossbeam hole groove, erection template, welds main muscle and reserved steel bar, concreting, completes the making of crossbeam.
Embodiment 3:
As shown in Figure 6, for oblique form prestressed anchor pile, reinforcement design scheme parameter is determined according to scene, anchoring section is in the Composite Bolt stake of different depth place, first at domatic range finding unwrapping wire, determine bore position, according to the boring of design scheme parameter, after clear hole completes, place anchor pole, by sleeve valve grouting technology in anchoring section and free segment grouting, reach after design strength 80% until injecting cement paste, prestressed stretch-draw and anchoring are carried out to anchor pole, excavation crossbeam hole groove, erection template, weld main muscle and reserved steel bar, concreting, complete the making of crossbeam.
By reference to the accompanying drawings detailed description of the invention of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (8)
1. the Composite Bolt stake for slope reinforcement, it is characterized in that, comprise anchor pole and injecting cement paste, described injecting cement paste is filled in around anchor pole, described anchor pole comprises free segment and anchoring section, the free segment side of described anchor pole is fixed with Grouting Pipe, described Grouting Pipe and anchor pole integral, be provided with geotextiles outside the free segment of described anchor pole.
2. Composite Bolt stake as claimed in claim 1, is characterized in that, the top of the anchoring section of described anchor pole is laterally fixed with reserved steel bar, and described reserved steel bar and horizontal beam main tendon fix, and outside described horizontal beam main tendon, erection has crossbeam.
3. Composite Bolt stake as claimed in claim 2, it is characterized in that, at least two Composite Bolt stakes couple together by described crossbeam.
4. Composite Bolt stake as claimed in claim 1, it is characterized in that, described anchor pole quantity is at least three.
5. Composite Bolt stake as claimed in claim 1, it is characterized in that, the diameter of described anchor pole is Φ 20 ~ Φ 32 mm.
6. Composite Bolt stake as claimed in claim 1, it is characterized in that, the freedom length of described anchor pole is identical.
7. Composite Bolt stake as claimed in claim 1, is characterized in that, the freedom length of described anchor pole is different, and increases progressively gradually.
8. Composite Bolt stake as claimed in claim 1, it is characterized in that, described anchor pole carries out anchoring by concrete anchor pier and form anchor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797013.1U CN204311463U (en) | 2014-12-12 | 2014-12-12 | A kind of Composite Bolt stake for slope reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420797013.1U CN204311463U (en) | 2014-12-12 | 2014-12-12 | A kind of Composite Bolt stake for slope reinforcement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204311463U true CN204311463U (en) | 2015-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420797013.1U Expired - Fee Related CN204311463U (en) | 2014-12-12 | 2014-12-12 | A kind of Composite Bolt stake for slope reinforcement |
Country Status (1)
| Country | Link |
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| CN (1) | CN204311463U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452784A (en) * | 2014-12-12 | 2015-03-25 | 山东大学 | Composite bolt pile used for slope strengthening and construction technique of composite bolt pile |
| CN115094909A (en) * | 2022-07-22 | 2022-09-23 | 北京中润宝成工程技术有限公司 | Construction method of rotary spraying anchor rod meeting CFG pile |
-
2014
- 2014-12-12 CN CN201420797013.1U patent/CN204311463U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452784A (en) * | 2014-12-12 | 2015-03-25 | 山东大学 | Composite bolt pile used for slope strengthening and construction technique of composite bolt pile |
| CN104452784B (en) * | 2014-12-12 | 2017-01-18 | 山东大学 | Composite bolt pile used for slope strengthening and construction technique of composite bolt pile |
| CN115094909A (en) * | 2022-07-22 | 2022-09-23 | 北京中润宝成工程技术有限公司 | Construction method of rotary spraying anchor rod meeting CFG pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20151212 |
|
| EXPY | Termination of patent right or utility model |