CN110117957A - A kind of installation method of concrete hollow anchor pole tooling - Google Patents
A kind of installation method of concrete hollow anchor pole tooling Download PDFInfo
- Publication number
- CN110117957A CN110117957A CN201910248120.6A CN201910248120A CN110117957A CN 110117957 A CN110117957 A CN 110117957A CN 201910248120 A CN201910248120 A CN 201910248120A CN 110117957 A CN110117957 A CN 110117957A
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- Prior art keywords
- rod
- hole
- voussoir
- inner hole
- wedge
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- Pending
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- 238000009434 installation Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000003780 insertion Methods 0.000 claims abstract description 13
- 230000037431 insertion Effects 0.000 claims abstract description 13
- 239000000853 adhesive Substances 0.000 claims abstract description 12
- 230000001070 adhesive effect Effects 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000007569 slipcasting Methods 0.000 claims abstract description 5
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims abstract description 4
- 239000011435 rock Substances 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 20
- 238000005520 cutting process Methods 0.000 claims description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
A kind of installation method of concrete hollow anchor pole tooling, when being inversely installed for this hollow bolt, comprising the following steps: step 1 punches borehole cleaning: using drilling machine drill straight hole (28) on rock or concrete (27), broaching equipment reaming is reused, hole cleaning device borehole cleaning is then used；Step 2, installation: it is first finished hollow from the assembling of base expanding and base expanding anchor bolt, rubber sleeve (30) is nested with outside and makes rubber sleeve (30) be located at intermediate bar (22) part in the body of rod (1), rubber sleeve (30) is adhesive on the body of rod (1) with gluing again, then will be assembled hollow from base expanding and base expanding anchor bolt insertion straight hole (28)；Step 3, grouting: injecting paste material is passed sequentially through into body of rod inner hole (9), voussoir inner hole (24) with syringe and injects straight hole (28) bottom hole afterwards, stop slip casting after injecting paste material is overflowed from gas-guide tube (32) on a large scale, hole (9) prevents grouting material from flowing out in exposed junction (6) installation upper bolt cap (29) dam bar body, solidify to injecting paste material, then it is hollow to be installed from base expanding and base expanding anchor bolt.
Description
Technical field
The present invention relates to a kind of anchor pole tooling, more specifically to a kind of installation side of concrete hollow anchor pole tooling
Method belongs to anchorage technology field.
Background technique
Usually there are two types of anchorage styles for anchor pole: cementing formula anchoring and mechanical anchoring.Cementing formula anchoring is cementing by what is be perfused
Material consolidation provides anchor force, such as embedding re-bar technique later, and anchoring adhesive is because of intensity height, and the anchor force that can be provided is big, high reliablity；But
It is that anchoring adhesive has not heatproof, not moisture-proof and aging, is not able to satisfy the engineering demand of certain particular surroundings.
Mechanical anchoring provides anchor force mainly by the frictional resistance for dilating the extruding generation between head and anchor hole wall；But
To be engaged that depth is limited because of anchor head and hole wall, the withdrawal resistance that can be provided is little, and the deformation of hole wall and dilate head relaxation it is easy
Make fastening invalidation, reliability is low.Meanwhile it can not be solved using the horizontal anchor pole of existing mechanical anchoring process installation and the when of falling anchor pole
Certainly grouting material flows out problem between anchor pole and hole wall gap under the effect of gravity, therefore mechanical anchoring is only applicable to commonly at present
Vertical anchor pole is not suitable for horizontal anchor pole and anchor pole, cannot satisfy the use demand.
Summary of the invention
It is an object of the invention to can not solve for the horizontal anchor pole of existing machinery formula anchoring process installation and the when of falling anchor pole
The problems such as grouting material flows out between anchor pole and hole wall gap provides a kind of installation method of concrete hollow anchor pole tooling.
The present invention to achieve the above object, be using technical solution: a kind of peace of concrete hollow anchor pole tooling
Dress method, when being inversely installed for this hollow bolt, concrete hollow anchor pole therein includes the body of rod and voussoir, the body of rod packet
It includes and is sequentially connected the bottom end connect, intermediate bar and exposed junction, the voussoir includes the wedge head being connected and pedestal, in the body of rod
The heart offers body of rod inner hole, and one end of the body of rod inner hole extends on the end face of exposed junction, and the other end of body of rod inner hole extends
To the end face of bottom end, the bottom end includes cutter head and joint-cutting, and cutter head includes upper end, lower end and outer peripheral surface, the number of the joint-cutting
Amount is equal with the quantity of cutter head, and joint-cutting is provided on the outer peripheral surface of the exposed junction other end between two neighboring cutter head
Screw thread, the wedge head include wedge top, circular conical surface or incline or wedge surface, and the wedge top is in contact with lower end, the circular conical surface or side
Rib or wedge surface are located at the position of face joint-cutting, and the center of the voussoir offers voussoir inner hole, and voussoir inner hole one end extends
To the end face on wedge top, the voussoir inner hole other end is extended on the end face of pedestal, and the body of rod inner hole is connected with voussoir inner hole
Logical, the tooling includes rubber sleeve, and the rubber sleeve is nested with outside the body of rod, is provided on rubber sleeve tube wall along the body of rod from upper
And the gas port in lower direction, gas-guide tube is inserted in the gas port, comprising the following steps: step 1 punches borehole cleaning: using
Drilling machine drill straight hole on rock or concrete so that the interior diameter of straight hole is greater than the overall diameter of the overall diameter of the body of rod, voussoir, then makes
With broaching equipment reaming, hole cleaning device borehole cleaning is then used；Installation: step 2 first finishes hollow bolt assembling, rubber sleeve
It is nested with outside the body of rod and rubber sleeve is made to be located at central rod portion, then rubber sleeve is adhesive on the body of rod with gluing, then will assemble
It is hollow from base expanding and base expanding anchor bolt insertion straight hole, when insertion, voussoir is located at the top of the body of rod, when pedestal is in contact with the bottom hole of straight hole
When stop insertion, then hammer or impact anchor pole bottom so that the body of rod is moved up along straight hole, cutter head under the constraint of wedge head to
Outer expansion stops hammering or impact anchor pole bottom when cutter head and straight hole bottom hole formation locking key effect；Step 3, grouting: with note
Emitter injects straight hole bottom hole after injecting paste material is passed sequentially through body of rod inner hole, voussoir inner hole, when injecting paste material is on a large scale from air guide
Pipe stops slip casting after overflowing, and hole prevents grouting material from flowing out in exposed junction installation upper bolt cap dam bar body, solid to injecting paste material
Change, then hollow bolt tooling installs.
Hollow bolt assembling process in this described step 2 is as follows: first by voussoir insertion the body of rod bottom end, make the body of rod and
Voussoir is assembled into one structure, to complete the assembling of concrete hollow anchor pole.
The bottom end of the voussoir insertion body of rod refers to: making in the body of rod inner hole inner peripheral surface of the bottom end of the body of rod and the voussoir on wedge top
Hole inner peripheral surface is in clamping connection；Alternatively, circular conical surface or incline or wedge surface top end surface to be smeared to the bottom of the insertion body of rod after adhesives
The body of rod inner hole inner peripheral surface at end makes the body of rod inner hole inner peripheral surface of the bottom end of the body of rod and the voussoir on wedge top after adhesives solidification
Inner hole is connected.
Compared with prior art, the beneficial effects of the present invention are:
Body of rod inner hole is connected with voussoir inner hole in the present invention, is provided with that direction is led from top to bottom along the body of rod on rubber sleeve tube wall
Stomata is inserted with gas-guide tube in gas port；Using in body of rod inner hole and the formation of voussoir inner hole after completing rockbolt installation work
Empty channel carries out slip casting, and injecting paste material is infused to bottom hole, then is turned back forming circuit by bottom hole by gas-guide tube, so that gap
It is easily poured closely knit；And rubber sleeve can prevent grouting material when horizontal anchor pole and the grouting of falling anchor pole from flowing between anchor pole and hole wall gap
Out, it is ensured that slurry filling quality provides bonding anchor force for anchor pole, while playing protective action to anchor rod body, to improve
The endurance quality and unfailing performance of anchor pole.Therefore, not only grouting quality is good by the present invention, but also durability is high, high reliablity.
Detailed description of the invention
Fig. 1 is tool structure schematic diagram in the present invention.
Fig. 2 is rubber sleeve structural schematic diagram in the present invention.
Fig. 3 is status diagram after present invention installation.
Fig. 4 is hollow bolt structural schematic diagram in the present invention.
Fig. 5 is bar structure schematic diagram in the present invention.
Fig. 6 is the main view of body of rod bottom end in the present invention.
Fig. 7 is the bottom view of Fig. 6.
Fig. 8 is the structural schematic diagram of positive round cone voussoir in the present invention.
Fig. 9 is the structural schematic diagram of orthopyramid body voussoir in the present invention.
Figure 10 is the main view of wedge voussoir in the present invention.
Figure 11 is the left view of Figure 10.
In figure, the body of rod 1, voussoir 2, gas-guide tube 3, bottom end 4, intermediate bar 5, exposed junction 6, wedge head 7, pedestal 8, body of rod inner hole 9,
Cutter head 10, joint-cutting 11, upper end 12, lower end 13 and outer peripheral surface 14, first end 15, second end 16, third end 17, the 4th end 18, spiral shell
Line 19, wedge top 20, circular conical surface 21, incline 22, wedge surface 23, voussoir inner hole 24, pointed cone angle 25, groove 26, concrete 27, straight hole
28, anchor pole cap 29, rubber sleeve 30, gas port 31.
Specific embodiment
Below in conjunction with Detailed description of the invention and specific embodiment, the present invention is described in further detail.
Referring to Fig. 3 to Figure 11, a kind of mounting tool of hollow bolt, hollow bolt therein includes the body of rod 1 and voussoir 2.
The body of rod 1 includes being sequentially connected the bottom end 4 connect, intermediate bar 5 and exposed junction 6, the voussoir 2 include the wedge head 7 that is connected with
Pedestal 8；The center of the body of rod 1 offers body of rod inner hole 9, and one end of the body of rod inner hole 9 extends to the end face of exposed junction 6
On, the other end of body of rod inner hole 9 extends on the end face of bottom end 4.The bottom end 4 includes cutter head 10 and joint-cutting 11, the cutter head
10 quantity at least two, cutter head 10 include upper end 12, lower end 13 and outer peripheral surface 14；The quantity and cutter head 10 of the joint-cutting 11
Quantity it is equal, joint-cutting 11 is between two neighboring cutter head 10.Joint-cutting 11 include first end 15, second end 16, third end 17,
4th end 18, the first end 15 extend on the end face of upper end 12, and second end 16 extends on the end face of lower end 13, third end
17 it is vertical with body of rod inner hole 9 communicate, the 4th end 18 extends on outer peripheral surface 14.One end of the intermediate bar 5 is connected with upper end 12
It connects, the other end of intermediate bar 5 is connected with one end of exposed junction 6, is provided with screw thread on the outer peripheral surface of the other end of exposed junction 6
19.The wedge head 7 includes wedge top 20, circular conical surface 21 or incline 22 or wedge surface 23, and the wedge top 20 is in contact with lower end 13, described
Circular conical surface 21 or incline 22 or wedge surface 23 are located at the position of face joint-cutting 11；The center of the voussoir 2 offers voussoir inner hole 24,
One end of the voussoir inner hole 24 extends on the end face on wedge top 20, and the other end of voussoir inner hole 24 extends to the end face of pedestal 8
On.The quantity of the joint-cutting 11 is 2~8, and the distance between the first end 15 and second end 16 are more than or equal to wedge head 7
Highly.The wedge head 7 is positive conical structure, orthopyramid body structure or wedge design, and the pointed cone angle 25 of wedge head 7 is less than the body of rod
Twice of angle of friction between 1 and 2 liang of materials of voussoir.Radial direction of the pedestal 8 along section offers multiple grooves 26, the ditch
Slot 26 is vertical with voussoir inner hole 24 to be communicated.
Referring to Fig. 1 to Fig. 3, this tooling includes rubber sleeve 30, and the rubber sleeve 30 is nested with outside the body of rod 1, rubber sleeve 30
It is provided with the gas port 31 along the direction from top to bottom of the body of rod 1 on tube wall, is inserted with gas-guide tube 3 in the gas port 31.It is described
Rubber sleeve 30 is located at 5 part of intermediate bar of the body of rod 1,
Referring to Fig. 1 to Fig. 3, a kind of installation method of concrete hollow anchor pole tooling, when being inversely installed for this hollow bolt, packet
Include following steps:
Step 1 punches borehole cleaning: drilling machine drill straight hole 28 on rock or concrete 27 is used, so that the interior diameter of straight hole 28 is greater than
The overall diameter of the overall diameter of the body of rod 1, voussoir 2, reuses broaching equipment reaming, then uses hole cleaning device borehole cleaning.
Step 2, installation: first finishing hollow bolt assembling, and rubber sleeve 30 is nested with outer in the body of rod 1 and makes rubber sleeve 30
Rubber sleeve 30 is adhesive on the body of rod 1 positioned at 22 part of intermediate bar, then with gluing；Assembled hollow bolt is inserted into straight hole again
In 28, when insertion, voussoir 2 is located at the top of the body of rod 1, stops insertion when pedestal 8 is in contact with the bottom hole of straight hole 28, then hammers into shape
Anchor pole bottom is hit or impacts, so that the body of rod 1 is moved up along straight hole 28, cutter head 10 expands outwardly under the constraint of wedge head 7, works as knife
First 10 with 28 bottom hole of straight hole formed locking key effect when, stop hammering or impact anchor pole bottom.
Grouting: step 3 injects straight hole after injecting paste material is passed sequentially through body of rod inner hole 9, voussoir inner hole 24 with syringe
28 bottom holes, when injecting paste material stops slip casting after the spilling of gas-guide tube 32 on a large scale, in installation 29 dam bar of upper bolt cap of exposed junction 6
Internal hole 9 prevents grouting material from flowing out, and solidifies to injecting paste material, then hollow bolt tooling installs.
Referring to Fig. 1 to Figure 11, the hollow bolt assembling process in this described step 2 is as follows: voussoir 2 being first inserted into the body of rod 1
Bottom end 4, so that the body of rod 1 and voussoir 2 is assembled into one structure, to complete the assembling of concrete hollow anchor pole.The voussoir 2 is inserted
The bottom end 4 for entering the body of rod 1 refers to: making 9 inner peripheral surface of body of rod inner hole of the bottom end 4 of the body of rod 1 and 24 inner peripheral surface of voussoir inner hole on wedge top 20
It is in clamping connection；Alternatively, circular conical surface 21 or incline 22 or 23 top end surface of wedge surface to be smeared to the bottom end of the insertion body of rod 1 after adhesives
49 inner peripheral surface of body of rod inner hole makes 9 inner peripheral surface of body of rod inner hole of the bottom end 4 of the body of rod 1 and wedge top 20 after adhesives solidification
Voussoir inner hole 24 is connected.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, and above structure all shall be regarded as belonging to
Protection scope of the present invention.
Claims (3)
1. a kind of installation method of concrete hollow anchor pole tooling, when being inversely installed for this hollow bolt, concrete therein
Hollow bolt includes the body of rod (1) and voussoir (2), and the body of rod (1) includes being sequentially connected the bottom end (4) connect, intermediate bar (5) and outer
Reveal end (6), the voussoir (2) includes the wedge head (7) being connected and pedestal (8), and the center of the body of rod (1) offers in the body of rod
The one end in hole (9), the body of rod inner hole (9) extends on the end face of exposed junction (6), and the other end of body of rod inner hole (9) extends to
On the end face of bottom end (4), the bottom end (4) includes cutter head (10) and joint-cutting (11), and cutter head (10) includes upper end (12), lower end
(13) and outer peripheral surface (14), the quantity of the joint-cutting (11) is equal with the quantity of cutter head (10), and joint-cutting (11) is located at two neighboring
Between cutter head (10), it is provided with screw thread (19) on the outer peripheral surface of exposed junction (6) other end, the wedge head (7) includes wedge top
(20), circular conical surface (21) or incline (22) or wedge surface (23), the wedge top (20) are in contact with lower end (13), the circular conical surface
(21) or incline (22) or wedge surface (23) are located at the position of face joint-cutting (11), and the center of the voussoir (2) offers in voussoir
Hole (24), described voussoir inner hole (24) one end extend on the end face of wedge top (20), and voussoir inner hole (24) other end extends to bottom
On the end face of seat (8), the body of rod inner hole (9) is connected with voussoir inner hole (24), and the tooling includes rubber sleeve (30),
The rubber sleeve (30) be nested with the body of rod (1) outside, be provided on rubber sleeve (30) tube wall along the body of rod (1) direction from top to bottom
Gas port (31) is inserted with gas-guide tube (3) in the gas port (31), which comprises the following steps:
Step 1 punches borehole cleaning: drilling machine drill straight hole (28) on rock or concrete (27) is used, so that straight hole (28) is interior straight
Diameter is greater than the overall diameter of the overall diameter of the body of rod (1), voussoir (2), reuses broaching equipment reaming, then clear using hole cleaning device
Hole；
Installation: step 2 first finishes hollow bolt assembling, rubber sleeve (30), which is nested with, outside and makes rubber sleeve in the body of rod (1)
(30) be located at intermediate bar (22) part, then rubber sleeve (30) be adhesive on the body of rod (1) with gluing, then will it is assembled it is hollow oneself
Base expanding and base expanding anchor bolt is inserted into straight hole (28), and when insertion, voussoir (2) is located at the top of the body of rod (1), when pedestal (8) and straight hole (28)
Stop insertion when bottom hole is in contact, then hammer or impacts anchor pole bottom, so that the body of rod (1) is moved up along straight hole (28), knife
Head (10) expands outwardly under the constraint of wedge head (7), when cutter head (10) and straight hole (28) bottom hole formation locking key effect, stops hammer
Hit or impact anchor pole bottom；
Grouting: injecting paste material is passed sequentially through body of rod inner hole (9) with syringe, voussoir inner hole (24) injects straight hole afterwards by step 3
(28) bottom hole stops slip casting after injecting paste material is overflowed from gas-guide tube (32) on a large scale, installs upper bolt cap in exposed junction (6)
(29) hole (9) prevent grouting material from flowing out in dam bar body, solidify to injecting paste material, then hollow bolt tooling installs.
2. a kind of installation method of concrete hollow anchor pole tooling according to claim 1, which is characterized in that this described step
Hollow bolt assembling process in rapid two is as follows: first by the bottom end (4) of voussoir (2) the insertion body of rod (1), making the body of rod (1) and voussoir
(2) be assembled into one structure, to complete the assembling of concrete hollow anchor pole.
3. a kind of installation method of concrete hollow anchor pole tooling according to claim 2, which is characterized in that the voussoir
(2) bottom end (4) for being inserted into the body of rod (1) refers to: making body of rod inner hole (9) inner peripheral surface of the bottom end (4) of the body of rod (1) and wedge top (20)
Voussoir inner hole (24) inner peripheral surface is in clamping connection；Alternatively, circular conical surface (21) or incline (22) or wedge surface (23) top end surface are smeared
It is inserted into body of rod inner hole (9) inner peripheral surface of the bottom end (4) of the body of rod (1) after adhesives, after adhesives solidification, makes the body of rod (1)
Body of rod inner hole (9) inner peripheral surface of bottom end (4) be connected with the voussoir inner hole (24) of wedge top (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248120.6A CN110117957A (en) | 2019-03-29 | 2019-03-29 | A kind of installation method of concrete hollow anchor pole tooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248120.6A CN110117957A (en) | 2019-03-29 | 2019-03-29 | A kind of installation method of concrete hollow anchor pole tooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110117957A true CN110117957A (en) | 2019-08-13 |
Family
ID=67520587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910248120.6A Pending CN110117957A (en) | 2019-03-29 | 2019-03-29 | A kind of installation method of concrete hollow anchor pole tooling |
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| Country | Link |
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| CN (1) | CN110117957A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215569A (en) * | 2021-12-17 | 2022-03-22 | 南京林业大学 | Prestressed anchor rod construction method by utilizing magnesium oxide-carbon dioxide carbonization |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2900272A1 (en) * | 1979-01-05 | 1980-07-17 | Polensky & Zoellner | Rock anchor using thermal hardening material - has heater maintaining securing material at necessary temp. during hardening process |
| CN202832561U (en) * | 2012-02-21 | 2013-03-27 | 兰州交通大学 | Oblique type small duct slip-casting apparatus |
| CN205296160U (en) * | 2015-12-11 | 2016-06-08 | 中交四公局第一工程有限公司 | A slip casting system for being directed at slip casting object is slip casting device and formation of slip casting completely physically |
| CN105951825B (en) * | 2016-06-24 | 2018-01-09 | 武大巨成结构股份有限公司 | It is a kind of hollow from base expanding and base expanding crab-bolt and its installation method |
-
2019
- 2019-03-29 CN CN201910248120.6A patent/CN110117957A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2900272A1 (en) * | 1979-01-05 | 1980-07-17 | Polensky & Zoellner | Rock anchor using thermal hardening material - has heater maintaining securing material at necessary temp. during hardening process |
| CN202832561U (en) * | 2012-02-21 | 2013-03-27 | 兰州交通大学 | Oblique type small duct slip-casting apparatus |
| CN205296160U (en) * | 2015-12-11 | 2016-06-08 | 中交四公局第一工程有限公司 | A slip casting system for being directed at slip casting object is slip casting device and formation of slip casting completely physically |
| CN105951825B (en) * | 2016-06-24 | 2018-01-09 | 武大巨成结构股份有限公司 | It is a kind of hollow from base expanding and base expanding crab-bolt and its installation method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215569A (en) * | 2021-12-17 | 2022-03-22 | 南京林业大学 | Prestressed anchor rod construction method by utilizing magnesium oxide-carbon dioxide carbonization |
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Application publication date: 20190813 |
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