CN108589721A - A kind of improved rear pressure type tension and compression composite anchor-rod - Google Patents
A kind of improved rear pressure type tension and compression composite anchor-rod Download PDFInfo
- Publication number
- CN108589721A CN108589721A CN201810346553.0A CN201810346553A CN108589721A CN 108589721 A CN108589721 A CN 108589721A CN 201810346553 A CN201810346553 A CN 201810346553A CN 108589721 A CN108589721 A CN 108589721A
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- Prior art keywords
- anchor
- bearing plate
- rod body
- tension
- steel bearing
- 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.)
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- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 230000006835 compression Effects 0.000 title claims abstract description 31
- 238000007906 compression Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 238000004873 anchoring Methods 0.000 abstract description 68
- 239000002689 soil Substances 0.000 abstract description 33
- 230000006378 damage Effects 0.000 abstract description 3
- 230000000750 progressive effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- KQTVWCSONPJJPE-UHFFFAOYSA-N etridiazole Chemical compound CCOC1=NC(C(Cl)(Cl)Cl)=NS1 KQTVWCSONPJJPE-UHFFFAOYSA-N 0.000 description 1
- 230000003014 reinforcing effect Effects 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
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0001—Rubbers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of improved rear pressure type tension and compression composite anchor-rods, steel bearing plate, extruded sleeve and casing including anchor rod body and on the anchor rod body, it is also arranged on anchor rod body and rubber crush board is installed, extruded sleeve is fixed on anchor rod body, steel bearing plate is set on anchor rod body, and be welded on extruded sleeve, rubber crush board is superimposed on steel bearing plate backwards to the side of extruded sleeve, and anchor rod body is arranged casing from corresponding steel bearing plate between the anchor head of anchor rod body.Pressure type tension and compression composite anchor-rod is simple in structure after the present invention is improved, successfully avoid conventional anchor progressive destruction phenomenon in soft or hard staggeredly soil layer, solve the disadvantage that the pressure-bearing anchoring section of tension and compression composite anchor-rod and tension anchoring section can not cooperate with carrying in soft or hard staggeredly soil layer, the anti-pulling capacity for greatly improving anchor pole, the anchoring engineering of foundation pit, side slope, tunnel and underground space engineering suitable for soft or hard staggeredly stratum.
Description
Technical field
The present invention relate to it is a kind of it is improved after pressure type tension and compression composite anchor-rod, for foundation pit, side slope, tunnels and underground engineering
Anchoring and reinforcing, are particularly suitable for anchor rod anchored section while passing through the anchoring engineering of Soft Soil Layer and hard stratum.
Background technology
Patent Office of State Intellectual Property Office ZL201420450678.5 disclosed in 2014-12-17 discloses a kind of tension and compression
Composite anchor-rod is provided with bearing plate by predeterminated position in anchor rod anchored section of the body of rod, makes the anchoring section that conventional anchor is single
It is decomposed into pressure-bearing anchoring section and tension anchoring section, the stress concentration phenomenon of anchoring section and ground body interface is substantially reduced, makes anchor
Gu the bond strength of section and Rock And Soil is not fully exerted, to make tension and compression composite anchor-rod in identical anchoring depth than passing
The anti-pulling capacity of system tension type anchor pole and conventional pressure type anchor pole significantly improves；But Rock And Soil is in the history of formation, by
In influences such as geological movement, deposition, carryings, make it that inevitably there is layering.Therefore, anchor pole its anchoring section in construction
Often pass through soft or hard rock-soil layer different, character is different.The anchoring section for passing through different soil how is set to play maximum carrying
Power is most important to the engineering safety of anchor pole；And tension and compression composite anchor-rod disclosed in ZL201420450678.5 is applied to soft or hard
Staggeredly when soil layer, although anti-pulling capacity compares traditional tension type anchor pole and conventional pressure type anchor pole increases.But due to
Bond strength difference of the anchoring section in soft or hard soil layer is larger, therefore the anti-pulling capacity of pressure-bearing anchoring section can compare pan soil in Soft Soil Layer
The anti-pulling capacity of tension anchoring section is small in layer, can first destroy, bearing capacity softening then occurs, and extra pulling force is shifted
Tension anchoring section is given, tension anchoring section is caused to be destroyed therewith because load increases suddenly.At this point, ZL201420450678.5 is disclosed
Tension and compression composite anchor-rod cannot make in Soft Soil Layer pressure-bearing anchoring section bearing capacity and hard stratum tension anchoring section bearing capacity
It reaches the limit values simultaneously, Gu Qishang improves and optimizates space.
In view of this, the present inventor furthers investigate the structure of tension and compression composite anchor-rod, there is this case generation then.
Invention content
The object of the present invention is to provide a kind of improved rear pressure type tension and compression composite anchor-rod, solve to draw in soft or hard staggeredly soil layer
The shortcomings that pressing the pressure-bearing anchoring section of composite anchor-rod and tension anchoring section that can not cooperate with carrying can further improve the anti-of anchor pole
Pull out bearing capacity.
In order to achieve the above objectives, the present invention adopts the following technical scheme that：
A kind of improved rear pressure type tension and compression composite anchor-rod, including anchor rod body and the steel on the anchor rod body
Bearing plate, extruded sleeve and casing are also arranged on the anchor rod body and are equipped with rubber crush board, and the extruded sleeve is fixed on described
On anchor rod body, the steel bearing plate is set on the anchor rod body, and the steel bearing plate is welded in the extruded sleeve
On, the rubber crush board is superimposed on the steel bearing plate backwards to the side of the extruded sleeve, and the anchor rod body is from correspondence
At the steel bearing plate described sleeve pipe is arranged between the anchor head of the anchor rod body.
Preferably, the rubber crush board and the steel bearing plate are Circular plate structure, the rubber crush board it is straight
Diameter is equal to the diameter of the steel bearing plate.
Preferably, the lower end of described sleeve pipe is provided with external screw thread, in the rubber crush board and the steel bearing plate
Portion offers the matched threaded hole of the external screw thread with described sleeve pipe respectively.
Preferably, the rubber crush board is the annulus rubber pad of low-elasticity-modulus.
Using above-mentioned technical proposal, the rear pressure type tension and compression composite anchor-rod of a modification of the present invention, relative to
Tension and compression composite anchor-rod advantageous effect disclosed in ZL201420450678.5 is：It is low by being increased above steel bearing plate
The rubber crush board of mould is played, the load that anchor head is born will be transferred to bearing plate, since rubber crush board elasticity modulus is relatively low, easily
In compression, so when load is smaller, rubber crush board compresses the pressure that allows for realizing pressure-bearing anchoring section by itself so that in hard stratum
Tension anchoring section undertakes morning on load opportunity, and stress is larger, and pressure-bearing anchoring section is adjusted by choosing suitable rubber crush board
Allow pressure amount so that the bearing capacity of bearing capacity and the tension anchoring of pressure-bearing anchoring section reaches the limit values simultaneously, to make anchor pole resistance to plucking
Bearing capacity maximizes；Pressure type tension and compression composite anchor-rod is simple in structure after the present invention is improved, successfully avoids soft or hard staggeredly soil layer
Middle conventional anchor progressive destruction phenomenon solves the pressure-bearing anchoring section and tension of tension and compression composite anchor-rod in soft or hard staggeredly soil layer
Anchoring section can not cooperate with the shortcomings that carrying, greatly improve the anti-pulling capacity of anchor pole, suitable for the soft or hard staggeredly foundation pit stratum,
The anchoring engineering of side slope, tunnel and underground space engineering.
Description of the drawings
Fig. 1 is a kind of improved rear schematic diagram of the pressure type tension and compression composite anchor-rod in drilling after the completion of slip casting of the present invention；
Fig. 2 is the structural schematic diagram at a kind of bearing plate of improved rear pressure type tension and compression composite anchor-rod of the present invention；
Fig. 3 is the pressure-bearing anchoring section and tension anchoring section load of tension and compression composite anchor-rod disclosed in ZL201420450678.5
Displacement curve schematic diagram；
Fig. 4 is a kind of lotus of the pressure-bearing anchoring section and tension anchoring section of improved rear pressure type tension and compression composite anchor-rod of the present invention
Carry displacement curve schematic diagram.
Label and symbol description：
1- anchor rod bodies；2- steel bearing plates；3- rubber crush boards；4- extruded sleeves；5- casings；6- weld seams.
A indicates free section；B indicates anchor rod anchored section；C indicates anchor pole pressure-bearing anchoring section；D indicates the anchoring of anchor pole tension
Section；E indicates Soft Soil Layer；F indicates hard stratum；Q1 indicates the maximum pull that Soft Soil Layer pressure-bearing anchoring section can be born；S1 indicates weak soil
Corresponding deflection when the maximum pull that layer pressure-bearing anchoring section is born；Q1 ' indicates that hard stratum tension anchoring section deflection is S1
When the pulling force that bears；Q2 indicates the maximum pull that hard stratum tension anchoring section can be born；S2 indicates that hard stratum tension anchoring section is held
Corresponding deflection when the maximum pull received；Q2 ' indicates the pulling force born when Soft Soil Layer pressure-bearing anchoring section deflection is S2；S
Indicate rubber crush board allows compressive strain amount or thickness.
Specific implementation mode
In order to further explain the technical solution of the present invention, being carried out in the following with reference to the drawings and specific embodiments to the present invention detailed
It is thin to illustrate.
The present invention discloses a kind of improved rear pressure type tension and compression composite anchor-rod, as illustrated in fig. 1 and 2, including 1 He of anchor rod body
Steel bearing plate 2, rubber crush board 3, extruded sleeve 4 and the casing 5 being arranged on the anchor rod body 1, extruded sleeve 4 are fixed on
On anchor rod body 1, steel bearing plate 2 is set on anchor rod body 1, and steel bearing plate 2 is fixed by welding the weld seam 6 formed
On extruded sleeve 4, rubber crush board 3 is set on anchor rod body 1, and rubber crush board 3 is superimposed on steel bearing plate 2 backwards to crowded
The side of pressing sleeve 4, anchor rod body 1 are arranged casing 1 from corresponding steel bearing plate 2 between the anchor head of anchor rod body 1.In drilling
Steel bearing plate 2 and rubber crush board 3 are placed in anchoring section in the hard stratum F of Soft Soil Layer E before slip casting, rubber allows
Pressing plate 3 is the annulus rubber pad of low-elasticity-modulus, and the selection of the thickness and elasticity modulus of annulus rubber pad is needed according to different soft and hard soil
Layer is preset to allow compressive strain amount to be determined.
The lower end of casing 5, which corresponds at rubber crush board 3 and steel bearing plate 2, offers external screw thread, rubber crush board 3 with
The middle part of steel bearing plate 2 offers and the matched threaded hole of this external screw thread, rubber crush board 3 and steel bearing plate 2 respectively
The threaded hole respectively opened up by it is spirally connected with casing 5 successively.
Preferably, extruded sleeve 4 wears and is clamped on anchor rod body 1 and is connect with 2 solid welding of steel bearing plate.Steel pressure-bearing
Plate 2 uses circular slab, the diameter of rubber crush board 3 to be equal to the diameter of steel bearing plate 2, rubber crush board 3 is made to be superimposed on completely
Steel bearing plate 2 is backwards to the side of extruded sleeve 4；Rubber crush board 3 and the overlapping side stick to each other of steel bearing plate 2 are fixed.
Tension and compression composite anchor-rod disclosed in ZL201420450678.5 does not have rubber crush board, as shown in figure 3, being it below
Action principle：
When anchor pole starts stress, steel bearing plate is squeezed toward aperture direction, on the one hand so that pressure-bearing anchors in Soft Soil Layer
Section is extruded, and on the other hand makes tension anchoring section tension in hard stratum, i.e., in Soft Soil Layer in pressure-bearing anchoring section and hard stratum
Tension anchoring section while stress.Since pressure-bearing anchoring section is different with the rigidity of tension anchoring section in hard stratum in Soft Soil Layer, work as steel
The deformation of matter bearing plate is when reaching S1, and the pulling force that pressure-bearing anchoring section undertakes in Soft Soil Layer reaches maximum value Q1, and in hard stratum by
It is only Q1 ' to draw the pulling force that anchoring section undertakes, and is far below maximum value Q2, and the total pulling force that anchor pole is born at this time is Q1+Q1 '.When
Pulling force continues growing, and pressure-bearing anchoring section destroys immediately, and the pulling force that can be born is deformed with pressure-bearing anchoring section to be increased and drastically reduce,
The pulling force that bears that pressure-bearing anchoring section reduces is transferred directly to tension anchoring section, and the pulling force that tension anchoring section is born is caused to increase rapidly
Add.When steel bearing plate, which pulls out deformation, reaches S2, the pulling force that the tension anchoring section in hard stratum undertakes reaches maximum value Q2, and
The pulling force that pressure-bearing anchoring section undertakes in Soft Soil Layer is only Q2 ', is far below Q1, and the total pulling force that anchor pole is born at this time is Q2+
Q2’.Since the maximum pull Q2 that the tension anchoring section in hard stratum can undertake can undertake much larger than pressure-bearing anchoring section in Soft Soil Layer
Maximum pull Q1, the final Ultimate Up-lift Bearing Capacity Q2+Q2 ' of anchor pole.
The present invention is as shown in figure 4, be its action principle below：
When anchor rod anchored section of B is set in Soft Soil Layer E and hard stratum F simultaneously, since steel bearing plate 2 and rubber allow pressure
Plate 3 is located in hard stratum F, and close to Soft Soil Layer E.When 1 preliminary stress of anchor rod body, steel bearing plate 2 and rubber crush board 3
Be drawn out simultaneously, since the elasticity modulus of rubber crush board 3 is relatively low, when steel bearing plate 2 and rubber crush board 3 be pulled outwardly it is dynamic
When, rubber crush board 3 is easy to generate compressive deformation so that steel bearing plate 2 and rubber crush board 3 cannot squeeze pressure-bearing anchoring
Section C, therefore pressure-bearing anchoring section C does not stress first, i.e., first " allow pressure ", and pulling force is mainly or even all by the tension anchoring section D in hard stratum
To undertake.It does not continue to compress after the compressive deformation of rubber crush board 3 reaches S, the pressure-bearing anchoring section C in Soft Soil Layer E starts
Stress, steel bearing plate 2 continue to be drawn out, the tension anchoring section D stress in Soft Soil Layer E in pressure-bearing anchoring section C and hard stratum F after
It is continuous to increase.When steel bearing plate 2, which pulls out deformation, reaches S2, the tension anchor in Soft Soil Layer E in pressure-bearing anchoring section C and hard stratum F
Gu the pulling force that section D undertakes respectively while reaching maximum value Q1 and Q2, the Ultimate Up-lift Bearing Capacity of anchor pole is Q1+Q2, is far longer than
The Ultimate Up-lift Bearing Capacity Q2+Q2 ' of tension and compression composite anchor-rod disclosed in ZL201420450678.5.
Pressure type tension and compression composite anchor-rod is simple in structure after the present invention is improved, successfully avoids tradition in soft or hard staggeredly soil layer
Anchor pole progressive destruction phenomenon solves the pressure-bearing anchoring section C of tension and compression composite anchor-rod and tension anchoring in soft or hard staggeredly soil layer
The shortcomings that section D can not cooperate with carrying, greatly improves the anti-pulling capacity of anchor pole, foundation pit, side suitable for soft or hard staggeredly stratum
The anchoring engineering on slope, tunnel and underground space engineering.
The present invention is described in detail above in conjunction with attached drawing, but embodiments of the present invention be not limited in it is above-mentioned
Embodiment, those skilled in the art can make various modifications according to the prior art to the present invention, belong to the guarantor of the present invention
Protect range.
Claims (4)
1. a kind of improved rear pressure type tension and compression composite anchor-rod, including anchor rod body and the steel on the anchor rod body are held
Pressing plate, extruded sleeve and casing, it is characterised in that：It is also arranged on the anchor rod body and rubber crush board is installed, the extruded sleeve
It is fixed on the anchor rod body, the steel bearing plate is set on the anchor rod body, and the steel bearing plate is welded in
On the extruded sleeve, the rubber crush board is superimposed on the steel bearing plate backwards to the side of the extruded sleeve, the anchor pole
The body of rod is arranged described sleeve pipe from the correspondence steel bearing plate between the anchor head of the anchor rod body.
Pressure type tension and compression composite anchor-rod after 2. one kind according to claim 1 is improved, it is characterised in that：The rubber allows
Pressing plate and the steel bearing plate are Circular plate structure, and the diameter of the rubber crush board is equal to the straight of the steel bearing plate
Diameter.
Pressure type tension and compression composite anchor-rod after 3. one kind according to claim 1 is improved, it is characterised in that：Described sleeve pipe
Lower end is provided with external screw thread, and the middle part of the rubber crush board and the steel bearing plate offers the institute with described sleeve pipe respectively
State the matched threaded hole of external screw thread.
Pressure type tension and compression composite anchor-rod after 4. one kind according to claim 1 is improved, it is characterised in that：The rubber allows
Pressing plate is the annulus rubber pad of low-elasticity-modulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810346553.0A CN108589721A (en) | 2018-04-18 | 2018-04-18 | A kind of improved rear pressure type tension and compression composite anchor-rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810346553.0A CN108589721A (en) | 2018-04-18 | 2018-04-18 | A kind of improved rear pressure type tension and compression composite anchor-rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108589721A true CN108589721A (en) | 2018-09-28 |
Family
ID=63613607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810346553.0A Pending CN108589721A (en) | 2018-04-18 | 2018-04-18 | A kind of improved rear pressure type tension and compression composite anchor-rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN108589721A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853542A (en) * | 2019-03-29 | 2019-06-07 | 厦门源昌城建集团有限公司 | A kind of anti-grout leaking casing joint and anchor pole for tension and compression composite anchor-rod |
| CN109853552A (en) * | 2019-03-29 | 2019-06-07 | 华侨大学 | Assembled entirety bearing plate and the tension and compression composite anchor-rod for using the bearing plate |
| CN109853553A (en) * | 2019-03-29 | 2019-06-07 | 华侨大学 | Swollen shell bearing plate and the anchor pole for using the swollen shell bearing plate |
| CN112962594A (en) * | 2021-02-22 | 2021-06-15 | 大连理工大学 | Construction method of environment-friendly tension-compression composite dispersed anchor rod |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07127057A (en) * | 1993-11-02 | 1995-05-16 | Kajima Corp | Compression system permanent anchor |
| CN2675743Y (en) * | 2003-07-30 | 2005-02-02 | 柳州欧维姆机械股份有限公司 | Moveable extrusion sheath |
| CN101638893A (en) * | 2008-08-02 | 2010-02-03 | 柳州欧维姆机械股份有限公司 | Uniform pressure distribution type anchor cable |
| EP2248951A1 (en) * | 2009-05-08 | 2010-11-10 | Keller Holding gmbh | Method and device for determining the axial force progression in a pressure-grouted anchor |
| CN104164875A (en) * | 2014-08-11 | 2014-11-26 | 华侨大学 | Tension and compression combination-type anchor rod |
| JP2015206220A (en) * | 2014-04-22 | 2015-11-19 | ジェイアール東日本コンサルタンツ株式会社 | anchor structure |
-
2018
- 2018-04-18 CN CN201810346553.0A patent/CN108589721A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07127057A (en) * | 1993-11-02 | 1995-05-16 | Kajima Corp | Compression system permanent anchor |
| CN2675743Y (en) * | 2003-07-30 | 2005-02-02 | 柳州欧维姆机械股份有限公司 | Moveable extrusion sheath |
| CN101638893A (en) * | 2008-08-02 | 2010-02-03 | 柳州欧维姆机械股份有限公司 | Uniform pressure distribution type anchor cable |
| EP2248951A1 (en) * | 2009-05-08 | 2010-11-10 | Keller Holding gmbh | Method and device for determining the axial force progression in a pressure-grouted anchor |
| JP2015206220A (en) * | 2014-04-22 | 2015-11-19 | ジェイアール東日本コンサルタンツ株式会社 | anchor structure |
| CN104164875A (en) * | 2014-08-11 | 2014-11-26 | 华侨大学 | Tension and compression combination-type anchor rod |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853542A (en) * | 2019-03-29 | 2019-06-07 | 厦门源昌城建集团有限公司 | A kind of anti-grout leaking casing joint and anchor pole for tension and compression composite anchor-rod |
| CN109853552A (en) * | 2019-03-29 | 2019-06-07 | 华侨大学 | Assembled entirety bearing plate and the tension and compression composite anchor-rod for using the bearing plate |
| CN109853553A (en) * | 2019-03-29 | 2019-06-07 | 华侨大学 | Swollen shell bearing plate and the anchor pole for using the swollen shell bearing plate |
| CN109853542B (en) * | 2019-03-29 | 2023-11-28 | 厦门源昌城建集团有限公司 | Slurry-preventing sleeve joint for pull-press composite anchor rod and anchor rod |
| CN109853553B (en) * | 2019-03-29 | 2024-02-23 | 华侨大学 | Expansion shell bearing plate and anchor rod adopting same |
| CN112962594A (en) * | 2021-02-22 | 2021-06-15 | 大连理工大学 | Construction method of environment-friendly tension-compression composite dispersed anchor rod |
| CN112962594B (en) * | 2021-02-22 | 2022-01-04 | 大连理工大学 | Construction method of environment-friendly tension-compression composite dispersed anchor rod |
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