CN102051880A - Detachable anchor - Google Patents
Detachable anchor Download PDFInfo
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- CN102051880A CN102051880A CN 201010617230 CN201010617230A CN102051880A CN 102051880 A CN102051880 A CN 102051880A CN 201010617230 CN201010617230 CN 201010617230 CN 201010617230 A CN201010617230 A CN 201010617230A CN 102051880 A CN102051880 A CN 102051880A
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- anchor
- detachable
- section
- bar body
- adapter sleeve
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Abstract
The invention discloses a detachable anchor. The detachable anchor comprises an anchor body, a base plate and a nut, wherein the anchor body comprises a detachable section and a permanent inner anchor section which are connected directly or through a connecting sleeve; the detachable section and the permanent anchor section or the connecting sleeve are in detachable connection; the base plate and the nut are sleeved on the detachable section; an isolation protective sleeve which can completely cover the part, which is positioned on one side of the base plate opposite to the nut, of the detachable section is sleeved on the anchor body; and one end of the isolation protective sleeve is matched with the base plate, while the other end of the isolation protective sleeve is in seal connection with the connecting sleeve or the permanent inner anchor section. The anchor ensures that the detachable section, on which the base plate is sleeve, of the anchor body is isolated from a grouting body through the isolation protective sleeve (a grout stop plug is arranged when the anchor body is hollow), after anchoring is completed, all parts outside the anchor body of the detachable section can be detached, the permanent anchor section is retained and is adhered with the peripheral surrounding rock in the whole process, and the pressure stress is transferred to the peripheral bottom layer, so the stratum of the detachable section can be excavated.
Description
Technical field
The present invention relates to geotechnical engineering anchoring support technical field, is a kind of detachable anchor pole.
Background technology
In underground construction, mining engineering, foundation ditch and the slope project process that geotechnical engineering relates to, for preventing that stratum deformation from caving in or unstability jeopardizes safety, a kind of main support technology that the stratum is reinforced is to adopt anchor pole.By be arranged on anchor pole had in the stratum high strength resistance to tension and by closely knit mode such as combine between anchor pole and injecting cement paste around the anchor pole and the stratum with stratum consolidation, with the globality on raising stratum.With the control stratum deformation, make it to reach the stability and safety state.The development of this technology is existing century-old history, and proposes multiple bolt support type and technology to adapt to the different stratum and the needs of different condition.
With regard to the anchor pole type, can be divided into substantially:
Rigidity by anchor bar body can be divided into: make the bar reinforcement anchor pole (Bar anchor) of the body of rod and make Anchor cable-rod (strand anchor) the two big classes of the body of rod with flexible high-strength steel hank knotting with reinforcing bar or steel pipe.The multi beam type anchor pole (mult-strand anchor) that Anchor cable-rod is generally formed with many steel hank knottings based on prestressing force, because construction is complicated, requires high to plant equipment.Be applicable to that generally anchored force has greater than 500KN, the stratum that length 10m is above.And the bar reinforcement anchor-holding force of anchor bolt generally uses less than 500KN, and the machinery that is adopted is simple, easy construction, so be to use maximum anchor poles at present, be widely used in middle-size and small-size anchoring need the stratum supporting in.As traffic tunnel, water conservancy and hydropower tunnel, mining tunnel, general foundation ditch and slope retaining.
Can be divided into grouted anchor bar and non-grouted anchor bar by the anchoring type; Can be divided into non-prestressed anchor pole and prestressed anchor by the prestressing force mode; Can be divided into mechanical. points anchor formula and full bond-anchorage type by the prestress anchoraging segmented mode; Free section by prestressed anchor can be divided non-binding type prestressed anchor and binding type prestressed anchor; Can be divided into solid anchor pole and hollow (hollow) anchor pole by body of rod shape; Can be divided into automatic anchor pole and non-automatic anchor pole by the mode of creeping into.
Above-mentioned anchor pole generally all is used in the total length supporting or the reinforcing aspect of stratum or works, promptly an anchor pole total length is all brought into play the effect of supporting power, and the disengaging section parts just can not be realized mass action as excision exterior portion anchor bar body or weaken its effect or cause anchor pole not reuse and cause waste.
In actual engineering, some engineering will stage by stage or be implemented step by step just and can finish.In the underground ground foundation pit construction of for example newly-built building, periphery have near the old building thing exist can not be influenced, need the layering step excavation in melt pit side slope near old building, need squeeze into 8 meters long anchor pole integral reinforcings as analyzing after deliberation, progressively 3 meters webbing slopes of explosion excision influence old building thing ground to reduce again, anchor pole also needs 3 meters of same excisions like this, keeps 5 meters long anchor poles and bring into play long term in side slope.For example the rock tunnel section is too little again, needs enlarging, need be extended to 12 meters as 7 meters wide caverns.Abutment wall need excavate 2.5 meters, and analyze needing to reinforce earlier rock mass after deliberation, squeeze into 7 meters of radial system anchor poles in the cavern long, and row progressively is excavated to design section again, and 2.5 meters long of the also corresponding excisions of anchor pole keep 4.5 meters long anchor poles and bring into play long term in cavern's rock mass.Do not exist behind the disengaging section in the prior art and reusable anchor pole.
Summary of the invention
The invention discloses a kind of detachable anchor pole, this anchor pole can need the geotechnical engineering of Integratively supporting again to needing step excavation, before step excavation, carry out disposable support reinforcement stratum, and with the process of step excavation, the part anchor bar body of dismounting respective length, the part that keeps long-term supporting works on, the part of dismounting is reusable, easy construction, cost is low, and is safe and reliable.
A kind of detachable anchor pole, comprise anchor bar body, backing plate and nut, described anchor bar body comprises direct connection or detachable section and permanent interior anchor section connecting by adapter sleeve, detachable section with forever between anchoring section or the adapter sleeve for removably connecting, described backing plate and nut are set on detachable section, described anchor bar body upper sleeve through has and is positioned at the insulated jacket pipe that part that backing plate deviates from nut one side is wrapped quilt fully with detachable section, insulated jacket Guan Yiduan cooperates with backing plate, and the other end and adapter sleeve or permanent interior anchor section are tightly connected.
When being two sections, described detachable section with permanent in the anchor section be preferably and be threaded or clamping, simple in structure, be easy to processing and manufacturing.
When this anchor pole is grouted anchor bar, and described anchor bar body is a hollow, detachable section is provided with stop grouting plug with permanent interior anchor section junction, when needing boring slip casting downwards, one Grouting Pipe penetrates the anchor bar body inner chamber and passes stop grouting plug from nearly aperture one end, and when needing up-hole slip casting, Grouting Pipe is only passed backing plate and reached the aperture, from upwards overflowing to the anchoring terminal position at the bottom of the hole, the hollow bolt cavity is as the exhaust passage by slurries.
When being three sections, described anchor bar body by detachable section, adapter sleeve and permanent in the anchor section be preferably and be threaded.
When this anchor pole was grouted anchor bar, described anchor bar body was a hollow, was provided with stop grouting plug in the adapter sleeve, and when needing boring slip casting downwards, a Grouting Pipe penetrates the anchor bar body inner chamber and passes stop grouting plug from nearly aperture one end.When needing up-hole slip casting, a Grouting Pipe is only passed backing plate and is reached the aperture, and the hollow bolt cavity is as the exhaust passage, and detachable section has interior pipe (former Grouting Pipe).
Preferably, described insulated jacket pipe is threaded or interference fit with adapter sleeve, and is simple in structure, is easy to processing and fabricating.
Preferably, described adapter sleeve connects insulated jacket Guan Yiduan and radially dwindles formation one linkage section, and the junction external diameter of adapter sleeve and insulated jacket pipe can not undergone mutation, and is convenient to slip casting.
Preferably, described insulated jacket pipe is the PVC pipe, and material is easy to get, and is cheap, easy to assembly.
When this anchor pole is grouted anchor bar, and anchor bar body is local or all solid, and a Grouting Pipe or stack pass backing plate and extend to anchorage head.When needing boring slip casting downwards, a Grouting Pipe is passed backing plate and is extended to the anchor bar body end, and stack only passes backing plate and reaches the aperture; When needing up-hole slip casting, a stack passes backing plate and extends to the anchor bar body end, and Grouting Pipe is only passed backing plate and reached the aperture.
Anchor pole of the present invention is by detachable section and the injecting cement paste isolation of insulated jacket pipe (also having stop grouting plug during anchor bar body hollow) with the anchor bar body of sheathed backing plate, after anchoring is finished, all parts in this section anchor bar body outside can be removed, keep permanent anchoring section, the omnidistance bonding of this part and peripheral rock, compressive stress is passed to peripheral bottom, therefore can excavate detachable section stratum.
Description of drawings
Fig. 1 is the structural representation of anchor pole of the present invention;
Fig. 2 is the structural representation of anchor bar body in the anchor pole of the present invention;
Fig. 3 is the explosive view of anchor bar body shown in Figure 2;
Fig. 4 is an anchor pole installation structural representation shown in Figure 1;
Fig. 5 is the anchor pole installation structural representation with solid anchor bar body.
The specific embodiment
As shown in Figure 1, a kind of anchor pole, comprise and the anchorage head 2 of anchor bar body 1, anchor bar body front end, the backing plate 3 and the nut 4 of anchor bar body tail end, anchorage head 2 can be selected for use as Chinese patent 200310108547.5 disclosed expansion shell type anchoring heads, also can select the anchorage head of other types for use, anchorage head perhaps is not set.What present embodiment adopted is expansion shell type anchoring head.Backing plate 3 forms the block shape to deviating from anchorage head 2 one sides depression.Nut 4 and anchor bar body 1 tail end threaded engagement.
Detachable section and permanent anchoring section also can be directly by being threaded or clamping, as long as satisfy the insulated jacket pipe will detachable section be positioned at part between backing plate and the anchorage head wrap fully by, thereby with it and injecting cement paste isolation.
When anchor bar body 1 when being hollow, above-mentioned anchor pole construction method of installation is as follows:
1, with rig boring downwards and cleaning boring 100 in stratum (rock stratum);
2, hollow detachable section 12 and permanent anchoring section 11 are connected the two ends of adapter sleeve 13, and insulated jacket pipe 14 is connected by linkage section 131 with adapter sleeve 13, and forever the anchoring section head connects anchorage head 12, finishes the assembling of anchor bar body 1;
3, Grouting Pipe 5 stretches in its cavity and passes the stop grouting plug 6 of adapter sleeve 13 from anchor bar body 1 tail end, and stretches into permanent anchoring section 11 slightly, and stop grouting plug 6 cooperates with adapter sleeve 13 inner wall sealings, guarantees that slip casting can not flow in detachable section 12 the cavity.When anchor bar body is two-part, then stop grouting plug is placed on the junction of permanent anchoring section and detachable section.
4, as shown in Figure 4, the whole insertion in the boring 100 adopts the mode of impacting rotation to make the expansion shell type anchoring head spreading at the anchor bar body tail end, and backing plate 3 and nut 4 are enclosed within the tail end of anchor bar body 1.Scar is close in backing plate 3 inboards, by torque spanner locking nut 4, anchor pole is applied prestressing force.
5, anchor pole is carried out slip casting, the gap between Grouting Pipe 5, anchor bar body 1 inner chamber, anchorage head 2 grout outlets, anchor pole and the boring 100 forms the slip casting passage, and a stack passes backing plate 3, finishes slip casting by slip casting passage and stack.
6, etc. after injecting cement paste reaches the fixed length of time, remove nut 5, backing plate 4 and detachable section 12, because injecting cement paste is fixed, the omnidistance bonding of anchorage head, permanent anchoring section and adapter sleeve and peripheral rock, compressive stress is passed to peripheral bottom, therefore the stratum that can excavate outer anchor section.
7, when to rock stratum up-hole (as the tunnel), Grouting Pipe is passed backing plate in bottom slip casting, is provided with stop grouting plug equally in permanent anchoring section and the adapter sleeve, and body of rod cavity is as the exhaust passage, and all the other steps as mentioned above.
When anchor bar body is whole or local when solid, construction method of installation is as follows:
1, with rig boring downwards and cleaning boring 101 in stratum (rock stratum);
2, solid detachable section 12 and permanent anchoring section 11 are connected the two ends of adapter sleeve 13, and insulated jacket pipe 14 is connected by linkage section 131 with adapter sleeve 13, and forever the anchoring section head connects anchorage head 12, finishes the assembling of anchor bar body 1;
3, as shown in Figure 5, the whole insertion in the boring 101 adopts the mode of impacting rotation to make the expansion shell type anchoring head spreading at the anchor bar body tail end, and backing plate 3 and nut 4 are enclosed within the tail end of anchor bar body 1.Scar is close in backing plate 3 inboards, by torque spanner locking nut 4, anchor pole is applied prestressing force.
4, Grouting Pipe 30 is passed backing plate, stretch into boring 101 and extend to the bottom, and attached on the anchor pole, a stack passes backing plate, finishes slip casting by the gap between Grouting Pipe, anchor pole and the boring, stack.
5, etc. after injecting cement paste reaches the fixed length of time, remove nut 5, backing plate 4 and detachable section 12, because injecting cement paste is fixed, the omnidistance bonding of anchorage head, permanent anchoring section and adapter sleeve and peripheral rock, compressive stress is passed to peripheral bottom, therefore the stratum that can excavate outer anchor section.
6, when to rock stratum up-hole (as the tunnel), Grouting Pipe is passed backing plate in bottom slip casting, and stack passes backing plate and extends to anchorage head, and all the other steps as mentioned above.
Certainly anchor pole can carry out anchoring by early strong anchoring agent, can only install the anchoring agent in the anchorage head installation position, so just can save anchorage head, still there is prestressing force in anchor pole, can omnidistancely use the anchoring agent, this moment, anchor pole did not have prestressing force, but can omit parts such as stop grouting plug and Grouting Pipe yet.
Claims (10)
1. detachable anchor pole, comprise anchor bar body, backing plate and nut, it is characterized in that: described anchor bar body comprises direct connection or detachable section and permanent interior anchor section connecting by adapter sleeve, detachable section with forever between anchoring section or the adapter sleeve for removably connecting, described backing plate and nut are set on detachable section, described anchor bar body upper sleeve through has and is positioned at the insulated jacket pipe that part that backing plate deviates from nut one side is wrapped quilt fully with detachable section, insulated jacket Guan Yiduan cooperates with backing plate, and the other end and adapter sleeve or permanent interior anchor section are tightly connected.
2. detachable anchor pole according to claim 1 is characterized in that, described detachable section with permanent in anchor section clamping or be threaded.
3. detachable anchor pole according to claim 2 is characterized in that, described anchor bar body is a hollow, and detachable section is provided with stop grouting plug with permanent interior anchor section junction inner chamber, and a Grouting Pipe penetrates the anchor bar body inner chamber and passes stop grouting plug from nearly aperture one end.
4. detachable anchor pole according to claim 1 is characterized in that, described anchor bar body by detachable section, adapter sleeve and permanent in the anchor section be threaded.
5. detachable anchor pole according to claim 4 is characterized in that: described anchor bar body is a hollow, and the adapter sleeve inner chamber is provided with stop grouting plug, and a Grouting Pipe penetrates the anchor bar body inner chamber and passes stop grouting plug from nearly aperture one end.
6. according to claim 1 or 4 described detachable anchor poles, it is characterized in that: described insulated jacket pipe is threaded or interference fit with adapter sleeve.
7. the detachable anchor pole of stating according to claim 6 is characterized in that, described adapter sleeve connects insulated jacket Guan Yiduan and radially dwindles formation one linkage section.
8. according to claim 1,2 or 4 described detachable anchor poles, it is characterized in that described insulated jacket pipe is the PVC pipe.
9. according to claim 1,2 or 4 described detachable anchor poles, it is characterized in that described anchor bar body is local or all solid, a Grouting Pipe or stack pass backing plate and extend to the anchor bar body end.
10. detachable anchor pole according to claim 1 is characterized in that: described anchor bar body is provided with anchorage head away from nut one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106172304A CN102051880B (en) | 2010-12-31 | 2010-12-31 | Detachable anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106172304A CN102051880B (en) | 2010-12-31 | 2010-12-31 | Detachable anchor |
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| Publication Number | Publication Date |
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| CN102051880A true CN102051880A (en) | 2011-05-11 |
| CN102051880B CN102051880B (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106172304A Active CN102051880B (en) | 2010-12-31 | 2010-12-31 | Detachable anchor |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047287A (en) * | 2014-05-26 | 2014-09-17 | 江苏金海新能源科技有限公司 | Prestressed sleeve self-lock anchor rod |
| CN105003285A (en) * | 2015-06-12 | 2015-10-28 | 中国水利水电第三工程局有限公司 | Nest sound-concentrating device for grouting and embedding of reinforced concrete works |
| CN106703851A (en) * | 2017-01-11 | 2017-05-24 | 辽宁工程技术大学 | Extensible and anti-breaking fiber reinforce plastic bolt |
| CN107677167A (en) * | 2017-10-23 | 2018-02-09 | 山东建筑大学 | Can explosion reaming and the soft stratum prestress anchoraging device and technique filled automatically |
| CN108589720A (en) * | 2018-04-12 | 2018-09-28 | 河海大学 | A kind of intersection squeezes out anchoring rod and its application method |
| CN109989776A (en) * | 2019-03-12 | 2019-07-09 | 杭州钜力锚杆科技有限公司 | A kind of connector for recoverable anchor pole |
| CN110500126A (en) * | 2019-09-20 | 2019-11-26 | 中铁隧道集团一处有限公司 | Hollow bolt filling adaptor and hollow bolt construction technology |
| CN112709225A (en) * | 2020-12-28 | 2021-04-27 | 云南建投第二水利水电建设有限公司 | Quick construction method for shell-expanding type prestressed anchor rod |
| CN113216172A (en) * | 2021-05-25 | 2021-08-06 | 宜宾学院 | Basalt fiber anchor rod for slope support |
| CN114439004A (en) * | 2022-04-07 | 2022-05-06 | 成都理工大学 | Separation device and method capable of recycling anchor rod |
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| US3940941A (en) * | 1973-04-02 | 1976-03-02 | Acieries Reunies De Burbach-Eich-Dudelange S.A. Arbed | Anchor bolts for mine roofs and method for installing same |
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| CN2773312Y (en) * | 2005-02-04 | 2006-04-19 | 上海禧龙工程安装有限公司 | Assembled slip-casting roofbolt |
| CN2804390Y (en) * | 2005-04-13 | 2006-08-09 | 李晓峰 | Harm gas preventing hollowed injecting paste anchor rod |
| CN2809009Y (en) * | 2005-07-08 | 2006-08-23 | 吴德兴 | Expansion shell anchor rod for multifunctional stop-grouting plug |
| CN201924356U (en) * | 2010-12-31 | 2011-08-10 | 杭州图强工程材料有限公司 | Detachable anchor rod |
-
2010
- 2010-12-31 CN CN2010106172304A patent/CN102051880B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3940941A (en) * | 1973-04-02 | 1976-03-02 | Acieries Reunies De Burbach-Eich-Dudelange S.A. Arbed | Anchor bolts for mine roofs and method for installing same |
| CN2091352U (en) * | 1991-04-10 | 1991-12-25 | 煤炭科学研究总院南京研究所 | Easily recovering anchor rod |
| CN2179461Y (en) * | 1993-11-18 | 1994-10-12 | 中国矿业大学 | Cement roll anchoring detatchable anchoring-bolt |
| CN2396182Y (en) * | 1999-09-07 | 2000-09-13 | 李建平 | Detachable anchoring-bolt |
| CN2773312Y (en) * | 2005-02-04 | 2006-04-19 | 上海禧龙工程安装有限公司 | Assembled slip-casting roofbolt |
| CN2804390Y (en) * | 2005-04-13 | 2006-08-09 | 李晓峰 | Harm gas preventing hollowed injecting paste anchor rod |
| CN2809009Y (en) * | 2005-07-08 | 2006-08-23 | 吴德兴 | Expansion shell anchor rod for multifunctional stop-grouting plug |
| CN201924356U (en) * | 2010-12-31 | 2011-08-10 | 杭州图强工程材料有限公司 | Detachable anchor rod |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047287A (en) * | 2014-05-26 | 2014-09-17 | 江苏金海新能源科技有限公司 | Prestressed sleeve self-lock anchor rod |
| CN105003285A (en) * | 2015-06-12 | 2015-10-28 | 中国水利水电第三工程局有限公司 | Nest sound-concentrating device for grouting and embedding of reinforced concrete works |
| CN106703851A (en) * | 2017-01-11 | 2017-05-24 | 辽宁工程技术大学 | Extensible and anti-breaking fiber reinforce plastic bolt |
| CN107677167A (en) * | 2017-10-23 | 2018-02-09 | 山东建筑大学 | Can explosion reaming and the soft stratum prestress anchoraging device and technique filled automatically |
| CN108589720A (en) * | 2018-04-12 | 2018-09-28 | 河海大学 | A kind of intersection squeezes out anchoring rod and its application method |
| CN109989776A (en) * | 2019-03-12 | 2019-07-09 | 杭州钜力锚杆科技有限公司 | A kind of connector for recoverable anchor pole |
| CN110500126A (en) * | 2019-09-20 | 2019-11-26 | 中铁隧道集团一处有限公司 | Hollow bolt filling adaptor and hollow bolt construction technology |
| CN110500126B (en) * | 2019-09-20 | 2024-03-15 | 中铁隧道集团一处有限公司 | Grouting joint for hollow anchor rod and construction process for hollow anchor rod |
| CN112709225A (en) * | 2020-12-28 | 2021-04-27 | 云南建投第二水利水电建设有限公司 | Quick construction method for shell-expanding type prestressed anchor rod |
| CN113216172A (en) * | 2021-05-25 | 2021-08-06 | 宜宾学院 | Basalt fiber anchor rod for slope support |
| CN114439004A (en) * | 2022-04-07 | 2022-05-06 | 成都理工大学 | Separation device and method capable of recycling anchor rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102051880B (en) | 2012-07-18 |
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