CN202626984U - Recyclable anchor used for foundation pit support - Google Patents
Recyclable anchor used for foundation pit support Download PDFInfo
- Publication number
- CN202626984U CN202626984U CN 201220161591 CN201220161591U CN202626984U CN 202626984 U CN202626984 U CN 202626984U CN 201220161591 CN201220161591 CN 201220161591 CN 201220161591 U CN201220161591 U CN 201220161591U CN 202626984 U CN202626984 U CN 202626984U
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- CN
- China
- Prior art keywords
- anchor rod
- foundation pit
- rod
- pit supporting
- round bar
- Prior art date
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a recyclable anchor used for foundation pit supporting. The recyclable anchor used for foundation pit supporting comprises a concrete preformed piece and a round bar steel anchor rod, wherein a hollow metal thread sleeve pipe is arranged inside the concrete preformed piece. External threads are arranged on the front end portion of the round bar steel anchor rod, and the front end portion of the round bar steel anchor rod is in threaded connection with the concrete preformed piece through the metal thread sleeve pipe. Locking threads are arranged on the tail end of the round bar steel anchor rod. When a person dismantles the recyclable anchor used for foundation pit supporting, the person rotates the round bar steel anchor rod so as to unscrew the round bar steel anchor rod from the metal screw sleeve pipe. The round bar steel anchor rod is separated from an anchor solid seat, and then the person pulls out the round bar steel anchor rod so as to recycle the whole rod. The dismantling recycling process is rapid and highly efficient. When people proceed with underground development, the anchor solid seat, concrete, and the metal screw sleeve pipe which are reserved in rock-soil body can be used as underground obstacles which are easily cut and broken by construction machinery, wherein the strength of the concrete and the metal screw sleeve pipe is much lower than the anchor rod. The metal screw sleeve is shell-shaped. The recyclable anchor used for foundation pit supporting has the advantages of being low in supporting cost, convenient to install, and easy to dismantle.
Description
Technical field
The utility model relates to a kind of anchor pole, relates in particular to a kind of recoverable anchor rod that is used for pattern foundation pit supporting structure.
Background technology
The prestressed anchor reinforcement supporting is a kind of important support form of building foundation pit, is used in the supporting of down town deep foundation ditch more.Along with the development of society, building land is more and more nervous, and foundation depth is also along with increasing, therefore to safe class require increasingly highly, the prestressed anchor reinforcement technology has also more highlighted the critical role of oneself.Yet along with the widespread usage of prestress anchorage cable, the general not recyclable property of anchor cable has also been brought very big social concern; After the temporary supporting disabler; Common anchor cable (bar) can't reclaim, and buries in underground with structure, has taken a large amount of underground spaces; Form underground rubbish, cause very big influence for the exploitation in adjacent plot.Countries and regions such as America and Europe early stipulate clearly that legally land user (builder) must not surmount the red line scope to the scope of application in plot; At home, people also more and more pay attention to the influence problem of common bolt (rope) to underground environment, and just limiting anchor pole (rope) surmounts the red line scope in pattern foundation pit supporting structure like Hong Kong.
To the problems referred to above, the ground worker has worked out multiple recoverable anchor rod and recyclable anchor cable.Anchor device can be extracted steel strand after pattern foundation pit supporting structure is accomplished in the bolt grouting body, reach the purpose of recovery.
Aspect existing patent; The domestic novel patent " the recoverable prestressed anchor cable of U type anchor head (application number 201020138405.9) " that is suitable for has been introduced a kind of recyclable anchor cable; Comprise anchor section in outer anchor section, free section and the U type, a steel strand one-in-and-one-out is penetrated two interior anchor section sleeve pipes respectively, interior anchor section sleeve pipe is connected with the linking steel disc; Anchor head is inserted in the guiding cap in the U type, belongs to the modified of the existing recyclable anchor cable of U type.Patent announcement number is: " the recoverable prestress anchorage cable " of CN200964593Y adopts U type supporting body structure; Complex structure, cost of manufacture is high, and steel strand are processed the intensity that influences steel strand itself behind the U type; Increased the cost of cable body; And reclaim the back steel strand and be wavy, can not recover the original wire of steel strand, thereby steel strand can only reclaim and can not reuse.
Existing domestic and international recyclable anchor cable system all exists cable body complex structure, cost recovery problem of higher.Its anchor head of the anchor device of some whole slip castings causes the outsourcing sebific duct damaged when reclaiming easily, and lumps gets into arc groove and causes frictional resistance to increase and difficult the recovery.When anchor cable is laid construction behind pore-forming, be prone to bond together with surrounding soil, make and lay comparatively difficulty, cause the hole plug-hole that collapses easily, reclaim constructional difficulties, the rate of recovery is little.Also have to be exactly because anchor head is provided with excessive longly, particularly under the situation of multistage anchor head, it is more to cause remaining in underground anchor head number of steel bars.
Summary of the invention
Not enough to prior art, the technical problem that the utility model will solve provide a kind of can the simple and convenient recoverable anchor rod that is used for pattern foundation pit supporting structure that reclaims efficiently.
In order to overcome the prior art deficiency; The technical scheme that the utility model adopts is: a kind of recoverable anchor rod that is used for pattern foundation pit supporting structure; It comprises concrete prefabricated member, rod bolt; The inside of said concrete prefabricated member is provided with the metal threaded sleeve pipe of hollow, and the leading section of said rod bolt is provided with external screw thread and is spirally connected through said metal threaded sleeve pipe and said concrete prefabricated member, and the afterbody of said rod bolt is provided with locking screw thread.
As the improvement of technique scheme, said rod bolt comprises at least two sections steel poles, and said steel pole connects through nut, and the hand of spiral of the screw thread of the hand of spiral of this nut and said rod bolt leading section is opposite.
As the improvement of technique scheme, the tail end of said rod bolt is a hexagon.
As the improvement of technique scheme, the periphery surface of said concrete prefabricated member is the stopping face.
As the improvement of technique scheme, the periphery surface of said concrete prefabricated member is taper surface or serrated face or helicoid or wavy surface or shaped face.
As the improvement of technique scheme, said recoverable anchor rod also comprises the Grouting Pipe that laterally arranges with said rod bolt.
As the improvement of technique scheme, said rod bolt outer race is provided with the PVC sheath body.
As the improvement of technique scheme, said locking screw thread place is arranged with billet and lock nut.
The beneficial effect of the utility model is: before the installation, rod bolt is put the concrete prefabricated member with anchorage bearing thread bush and sends in the anchor hole, inject cement grout or pea gravel concreten, treat that it solidifies to get final product stretch-draw anchor after forming anchorage.During dismounting, only need the hand of spiral rotation of rod bolt along its leading section just can be screwed out the anchorage bearing thread bush with rod bolt, promptly break away from anchorage, pull out rod bolt more outward and can reclaim by full bar, dismounting removal process simple and fast and efficient.Stay anchorage in the geotechnical body and comprise that intensity is than the much lower concrete of anchor pole material and the metal threaded sleeve pipe of housing shape; When carrying out underground development afterwards, easily by the construction machinery cutting and crushing, and support cost is low as underground obstacle; Easy for installation, remove easily.
Description of drawings
Fig. 1 is the whole elevational schematic view of embodiment of the recoverable anchor rod of the utility model.
The specific embodiment
Embodiment in the face of the utility model specifically describes down.
As shown in Figure 1; A kind of recoverable anchor rod that is used for pattern foundation pit supporting structure of the utility model; It comprises concrete prefabricated member 10, rod bolt 20; The inside of said concrete prefabricated member 10 is provided with the metal threaded sleeve pipe 12 of hollow, and the leading section 21 of said rod bolt 20 is provided with external screw thread and is spirally connected with said concrete prefabricated member 10 through said metal threaded sleeve pipe 12, and the afterbody 26 of said rod bolt 20 is provided with locking screw thread 28.
Before the installation, with rod bolt 20 put have the anchorage bearing thread bush (metal threaded sleeve pipe 12) concrete prefabricated member 10 and send in the anchor hole, inject cement grout or pea gravel concreten, treat that it solidifies to get final product stretch-draw anchor after forming anchorage 15.During dismounting; Only need the hand of spiral rotation of rod bolt 20 along its leading section 21 just can be screwed out the anchorage bearing thread bush with rod bolt 20, promptly break away from anchorage 15; Pulling out rod bolt 20 more outward can reclaim by full bar, dismounting removal process simple and fast and efficient.Stay anchorage 15 in the geotechnical body and comprise that intensity is than the much lower concrete of anchor pole material and the metal threaded sleeve pipe 12 of housing shape; When carrying out underground development afterwards, easily by the construction machinery cutting and crushing, and support cost is low as underground obstacle; Easy for installation, remove easily.
More preferably, said rod bolt 20 comprises at least two sections steel poles 22, and said steel pole 22 connects through nut 23, and the hand of spiral of the screw thread of the hand of spiral of this nut 23 and said rod bolt 20 leading sections is opposite.Therefore, rod bolt 20 spirals withdraw from anchorage 15 processes, and the thread rotary orientation between the steel pole 22 makes that on the contrary link position is to revolve tighter and tighter between the steel pole 22.Thereby can prevent to outward winding between the steel pole 22 and separate, avoid rod bolt 20 parts to be retained in the geotechnical body, guarantee to realize that body of rod total length reclaims.
More preferably, the tail end 29 of said rod bolt 20 is a hexagon, and this rod bolt 20 of instrument rotation easy to use reduces labour intensity.Said rod bolt 20 also can be hollow body, can economical with materials under the prerequisite of guaranteed strength, and can the weight reduction handled easily.
More preferably, the periphery surface of said concrete prefabricated member 10 is the stopping face, prevents that concrete prefabricated member 10 from withdrawing from or skidding off from anchorage 15 after accomplishing anchoring.
More preferably; The periphery surface of said concrete prefabricated member 10 is taper surface or serrated face or helicoid or wavy surface or shaped face; Thereby slip casting can not produce the dislocation slippage between pedestal and the concrete prefabricated member 10 after solidifying and forming anchorage 15, guarantees the anchoring location and prevents that concrete prefabricated member 10 from withdrawing from.
More preferably, said recoverable anchor rod also comprises the Grouting Pipe 30 that laterally arranges with said rod bolt 20, thereby is convenient to after rod bolt 20 stretches into anchor hole anchorage point carried out the 15 realization anchorings of slip casting formation anchorage.
More preferably, said rod bolt 20 outer race are provided with PVC sheath body 18, prevent that rod bolt 20 and rock-soil layer from cohering.
More preferably, said locking screw thread 28 places are arranged with billet 32 and lock nut 33, are used for the prop of anchoring foundation ditch, and billet 32 is convenient to the rotation adjusting of lock nut 30.
The above disclosed preferred embodiment that is merely the utility model can not limit the interest field of the utility model certainly with this, so according to the equivalent variations that the utility model claim is done, still belong to the scope that the utility model is contained.
Claims (8)
1. recoverable anchor rod that is used for pattern foundation pit supporting structure; It is characterized in that: said recoverable anchor rod comprises concrete prefabricated member, rod bolt; The inside of said concrete prefabricated member is provided with the metal threaded sleeve pipe of hollow; The leading section of said rod bolt is provided with external screw thread and is spirally connected through said metal threaded sleeve pipe and said concrete prefabricated member, and the afterbody of said rod bolt is provided with locking screw thread.
2. the recoverable anchor rod that is used for pattern foundation pit supporting structure according to claim 1; It is characterized in that: said rod bolt comprises at least two sections steel poles; Said steel pole connects through nut, and the hand of spiral of the screw thread of the hand of spiral of this nut and said rod bolt leading section is opposite.
3. the recoverable anchor rod that is used for pattern foundation pit supporting structure according to claim 1 and 2 is characterized in that: the tail end of said rod bolt is a hexagon.
4. the recoverable anchor rod that is used for pattern foundation pit supporting structure according to claim 1 and 2 is characterized in that: the periphery surface of said concrete prefabricated member is the stopping face.
5. the recoverable anchor rod that is used for pattern foundation pit supporting structure according to claim 4 is characterized in that: the periphery surface of said concrete prefabricated member is taper surface or serrated face or helicoid or wavy surface or shaped face.
6. the recoverable anchor rod that is used for pattern foundation pit supporting structure according to claim 1 and 2 is characterized in that: said recoverable anchor rod also comprises the Grouting Pipe that laterally arranges with said rod bolt.
7. the recoverable anchor rod that is used for pattern foundation pit supporting structure according to claim 1 and 2 is characterized in that: said rod bolt outer race is provided with the PVC sheath body.
8. the recoverable anchor rod that is used for pattern foundation pit supporting structure according to claim 1 is characterized in that: said locking screw thread place is arranged with billet and lock nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220161591 CN202626984U (en) | 2012-04-17 | 2012-04-17 | Recyclable anchor used for foundation pit support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220161591 CN202626984U (en) | 2012-04-17 | 2012-04-17 | Recyclable anchor used for foundation pit support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202626984U true CN202626984U (en) | 2012-12-26 |
Family
ID=47380195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220161591 Expired - Lifetime CN202626984U (en) | 2012-04-17 | 2012-04-17 | Recyclable anchor used for foundation pit support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202626984U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605780A (en) * | 2012-04-17 | 2012-07-25 | 周治国 | Recyclable anchor rod for foundation pit support and construction method thereof |
| CN103103983A (en) * | 2013-01-28 | 2013-05-15 | 江苏鼎达建筑新技术有限公司 | Recoverable combined type anchor device and construction method thereof |
| CN110630196A (en) * | 2019-10-12 | 2019-12-31 | 中国建筑第四工程局有限公司 | Anchor cable sleeving and taking machine for construction of tunnel crossing anchor cable by shield method |
| CN112962593A (en) * | 2021-02-22 | 2021-06-15 | 大连理工大学 | Construction method of recyclable anchor rod |
| CN113863361A (en) * | 2021-09-16 | 2021-12-31 | 中铁第五勘察设计院集团有限公司 | Underwater spiral anchor foundation, construction equipment and anchoring method |
-
2012
- 2012-04-17 CN CN 201220161591 patent/CN202626984U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605780A (en) * | 2012-04-17 | 2012-07-25 | 周治国 | Recyclable anchor rod for foundation pit support and construction method thereof |
| CN102605780B (en) * | 2012-04-17 | 2015-01-28 | 周治国 | Recyclable anchor rod for foundation pit support and construction method thereof |
| CN103103983A (en) * | 2013-01-28 | 2013-05-15 | 江苏鼎达建筑新技术有限公司 | Recoverable combined type anchor device and construction method thereof |
| CN103103983B (en) * | 2013-01-28 | 2014-11-05 | 江苏鼎达建筑新技术有限公司 | Recoverable combined type anchor device and construction method thereof |
| CN110630196A (en) * | 2019-10-12 | 2019-12-31 | 中国建筑第四工程局有限公司 | Anchor cable sleeving and taking machine for construction of tunnel crossing anchor cable by shield method |
| CN110630196B (en) * | 2019-10-12 | 2022-12-06 | 中国建筑第四工程局有限公司 | Anchor cable sleeving and taking machine for construction of tunnel crossing anchor cable by shield method |
| CN112962593A (en) * | 2021-02-22 | 2021-06-15 | 大连理工大学 | Construction method of recyclable anchor rod |
| CN113863361A (en) * | 2021-09-16 | 2021-12-31 | 中铁第五勘察设计院集团有限公司 | Underwater spiral anchor foundation, construction equipment and anchoring method |
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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: 20121226 Effective date of abandoning: 20150128 |
|
| RGAV | Abandon patent right to avoid regrant |