CN107034882B - A kind of anchoring system and its application method based on tensioning umbrella anchored end - Google Patents
A kind of anchoring system and its application method based on tensioning umbrella anchored end Download PDFInfo
- Publication number
- CN107034882B CN107034882B CN201710440438.5A CN201710440438A CN107034882B CN 107034882 B CN107034882 B CN 107034882B CN 201710440438 A CN201710440438 A CN 201710440438A CN 107034882 B CN107034882 B CN 107034882B
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- China
- Prior art keywords
- anchor
- anchored end
- tensioning
- anchor cable
- guide plate
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Classifications
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- 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
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/202—Securing of slopes or inclines with flexible securing means
Abstract
The present invention relates to building foundation pits and slope retaining technical field, especially a kind of tensioning umbrella anchored end, it is characterized by: the anchoring system includes at least tensioning umbrella anchored end and anchor cable, the tensioning umbrella anchored end includes at least steel pipe, guide plate, removable ring flange, anchor plate and two pieces of limit plates, wherein the guide plate and the removable ring flange are sleeved on the periphery of the steel pipe and can slide on the steel pipe, the anchor cable is connected to a fixed by the anchor cable hole and the guide plate and the removable ring flange, the tensioning of the anchor cable can be such that the removable ring flange slides along the steel pipe and the anchor plate is driven to expand to the periphery along the guide plate outer rim in umbrella.The invention has the advantages that can stablize the soil body with deep forms entirety, biggish withdrawal resistance is provided by the effect between anchor plate and steady soil, is remarkably improved the stability of foundation pit and side slope.
Description
Technical field
The present invention relates to building foundation pit and slope retaining technical field, especially a kind of tensioning umbrella anchored end.
Background technique
In subway open-cut foundation ditch, highway and Along Railway slope protection works and China Democratic National Construction Association's foundation pit, it is often necessary to be carried on the back to free face
The unstable soil body carries out supporting afterwards, to prevent foundation pit and slope deforming, unstability, landslide.Anchoring support system is foundation pit and side
Not only economic but also practical one of new technique, is made of Retaining Structures and anchor cable system two parts in the engineering of slope.Anchoring support
The soil pressure that soil-baffling structure at free face is born is transmitted to deep using anchor cable (bar) in the form of pulling force and stablized in the soil body by system
Anchoring section, then by anchoring section and stablize the soil body between interaction by the pulling force be transmitted to anchor hole periphery stablize the soil body.
Anchor cable (bar) pattern multiplicity divides main according to the mode of action between anchoring section pattern and anchoring section and the stable soil body
Including three kinds of cylindrical type, continuous ball-shape and anchored end expansion type.The wherein anchoring section of anchored end expansion type anchor cable (bar) and steady
Effect between soil layer is determined by the adhesion strength between anchoring body and the soil body and is expanded the end of soil layer at body and is held intensity two parts and form, because
The anchor cable (bar) of this type is capable of providing higher withdrawal resistance, the quality for significantly improving anchoring support system, has preferably
Economic benefit.
Deeply, occur blasting procedure and water jet method in succession constantly to the research of anchored end expansion type anchor pole both at home and abroad
Non-mechanical reaming method and pressure to represent open formula mechanical hole reaming method and PCBA reaming earth anchor as the mechanical reaming method of representative.
The above reaming engineering method is noteworthy characterized by: anchoring section slurries and dowel bond to form widened anchored end after reaming is formed, and mention
For anchor force.But these methods need to apply special broaching equipment or material, and equipment price and operating expenses are expensive, construction technology
Complexity, large volume reaming is very difficult, and the raising of anchor force is limited.Therefore it needs to study novel anchored end expansion type anchor pole,
Ensure that anchoring support system is capable of providing biggish withdrawal resistance, while should also take into account the convenience and operability of construction.
Summary of the invention
The purpose of the present invention is provide a kind of tensioning umbrella anchored end, creeping into according to above-mentioned the deficiencies in the prior art
When can be mobile to soil layer deep with drilling rod, in place after can be by pulling anchor cable that the anchor plate in anchored end be made to expand to periphery
It opens inlay bur hole deep and stablizes the soil body, to improve the withdrawal resistance and stability of support system.
The object of the invention realization is completed by following technical scheme:
A kind of anchoring system based on tensioning umbrella anchored end, for carrying out supporting to soil-slope, it is characterised in that: institute
Anchoring system is stated including at least tensioning umbrella anchored end and anchor cable, the tensioning umbrella anchored end include at least steel pipe, guide plate,
Removable ring flange, anchor plate and two pieces of limit plates, wherein the guide plate and the removable ring flange are sleeved on the steel
The periphery of pipe can simultaneously be slided on the steel pipe, the inclined outside shape arrangement of anchor plate, one end and the removable method
Blue disk is hinged, and plate body is welded and fixed with the guide plate, and two pieces of limit plates are respectively fixedly disposed at the outer of the steel pipe
It encloses and is respectively used to limit the guide plate and the removable ring flange, in the guide plate and the removable method
Anchor cable hole is offered on blue disk respectively, the anchor cable passes through the anchor cable hole and the guide plate and the removable ring flange phase
It is connected and fixed, the tensioning of the anchor cable can be such that the removable ring flange slides along the steel pipe and drive the anchor plate along institute
Guide plate outer rim is stated to expand to the periphery in umbrella.
Soil-baffling structure is provided on the outside of the soil-slope, the anchor cable is locked by anchor head, and the anchor head passes through
Waist rail is connected to a fixed with the soil-baffling structure.
It is fixedly installed aerofoil profile drilling piece in the bottom periphery of the steel pipe, the aerofoil profile drilling piece is with the uniform cloth of symmetry shape
Set the bottom periphery in the steel pipe.
It is a kind of to be related to the application method of the above-mentioned anchoring system based on tensioning umbrella anchored end, it is characterised in that: to be used for
Supporting is carried out to soil-slope, the method at least includes the following steps:
By the way that tensioning umbrella anchored end is fixedly connected with anchor cable in tensioning umbrella anchored end；
Drilling machine is in place, while the tensioning umbrella anchored end being connected with drilling rod, and the tensioning umbrella anchored end is made
The soil body is pierced until projected depth for drilling end；
Before extracting the drilling rod, tense the anchor cable, make the tensioning umbrella anchored end guide plate and anchor plate it
Between pad stress destruction, so that removable ring flange is slided along steel pipe and is driven the anchor plate along the outer rim of the guide plate
To perimeter expansion and the soil body is stablized in inlay bur hole deep；
The drilling rod and the tensioning umbrella anchored end are disengaged by back-drilling, and extract the drilling rod；
To bore inner slip casting, after middle grout cures hole to be drilled reach design strength, tensioning is carried out to the anchor cable and is applied
Add pretightning force, after pretightning force reaches design value, is connected firmly the anchor cable and anchor head to form anchoring system.
In the drilling process of the tensioning umbrella anchored end and the drilling rod, Xiang Suoshu inner pressure inside pipe slip casting, pressure
In lower end injection hole of the slurries by the thin-wall steel tube of the tensioning umbrella anchored end, washes away and replace in drilling process and formed
Soil body residue, and drilling around formation protective layer.
After drilling, the pulling force for tensing the anchor cable is greater than the limit of the pad between the guide plate and anchor plate
Bearing capacity records pulling force and displacement in the cinching process of the anchor cable, when its displacement close to the removable ring flange and
Stop when length between its corresponding limit plate.
The invention has the advantages that using the anchored end and the anchoring system being made of it, (main member has: novel
Draw umbrella anchored end, anchor cable, soil-baffling structure, waist rail, backing plate and anchor head) carry out foundation pit and slope retaining, the anchor plate of anchored end
Steady soil is opened and be embedded in tension, stablizes the soil body with deep and forms entirety, anchoring section is in addition to that can utilize anchoring section and body layer
Between interfacial treatment provide outside withdrawal resistance, also provide biggish resistance to plucking by effect between anchor plate and steady soil
Power is remarkably improved the stability of foundation pit and side slope；Present invention drilling and is once completed, simple process, low cost slip casting at anchor
Honest and clean, construct convenient, the risk and expense of reduction foundation pit and slope project.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of original state of the present invention；
Fig. 2 is sectional view along A-A in Fig. 1；
Fig. 3 is B-B direction cross-sectional view in Fig. 1；
Fig. 4 is the structural schematic diagram of expansion state of the present invention；
Fig. 5 is the structural schematic diagram that aerofoil profile creeps into piece in the present invention；
Fig. 6 is the structural schematic diagram of present invention connection anchor cable system；
Fig. 7 is use state diagram of the present invention.
Specific embodiment
Feature of present invention and other correlated characteristics are described in further detail by embodiment below in conjunction with attached drawing, so as to
In the understanding of technical staff of the same trade:
As shown in figs. 1-7, figure label 1-22 is respectively indicated are as follows: drilling rod connection buckle 1, limit plate 2, pad 3, guiding
Plate 4, anchor cable hole 5, anchor plate 6, limit plate 7, thin-wall steel tube 8, fixing pin 9, removable ring flange 10, anchor cable hole 11, aerofoil profile
Creep into piece 12, anchor head 13, backing plate 14, anchor cable 15, tensioning umbrella anchored end 16, steady soil 17, unstable soil layer 18, earth-retaining knot
Structure 19, free section of anchor cable 20, anchorage cable anchoring section 21, waist rail 22.
Embodiment: as shown in Figure 1, the tensioning umbrella anchored end thin-wall steel tube 8 in the present embodiment, on the top of thin-wall steel tube 8
Portion is provided with the drilling rod connection buckle 1 for being connected to a fixed with drilling rod, so that tensioning umbrella anchored end can be with drilling rod together
It creeps into and mobile to soil body deep layer.In conjunction with shown in Fig. 1 and Fig. 3, the bottom periphery of thin-wall steel tube 8 is provided with three pieces of aerofoil profile drillings
Piece 12, three pieces of aerofoil profiles drilling pieces 12 are centrosymmetric arrangement centered on the center of circle of thin-wall steel tube 8, with when guaranteeing drilling soil layer
Uniform force.As shown in figure 5, aerofoil profile drilling piece 12 is swallow-tail form deformed steel flats, one side surface is inclined-plane, which makes three
Block aerofoil profile drilling piece 12 may make up cone tip shape, consequently facilitating thin-wall steel tube 8 creeps into underground layer.
As shown in Figure 1, being provided with removable ring flange in its tube body periphery along 8 tube body of thin-wall steel tube the bottom of by direction is pushed up
10 and guide plate 4, guide plate 4 and removable ring flange 10 can be slided up and down on the tube body of thin-wall steel tube 8 respectively.It is leading
The periphery of plate 4 is provided with four pieces of anchor plates 6, as shown in Fig. 2, during four pieces of anchor plates 6 are in centered on the center of circle of thin-wall steel tube 8
The heart is arranged symmetrically.One end of four pieces of anchor plates 6 passes through fixing pin 9 respectively and is hinged on removable ring flange 10, four pieces of anchorings
Position temporary weld of the plate body of plate 6 respectively with guide plate 4 in pad 3 is fixed.Anchor cable hole 5 is offered on guide plate 4,
Anchor cable hole 11 is offered on removable ring flange 10, anchor cable hole 5 and anchor cable hole 11 are used to be connected with anchor cable.
As shown in Figure 1, being provided with limit plate 7 in the top of removable ring flange 10, in the top of guide plate 4, setting is limited
Position plate 2, wherein limit plate 7 is for limiting upward sliding of the removable ring flange 10 on thin-wall steel tube 8, and limit plate
On the one hand for being limited to upward sliding of the guide plate 4 on thin-wall steel tube 8, on the other hand for being pushed up in drilling process
Pushing away guide plate 4 be rotationally advancing anchored end can in the soil body.
In conjunction with shown in Fig. 4, Fig. 5 and Fig. 6, anchor cable by anchor cable hole 5 and anchor cable hole 11 respectively with guide plate 4 and removable method
Blue disk 10 is connected.Thin-wall steel tube 8 is connect by drilling rod connection buckle 1 with drilling rod.In drilling process, due to limit plate 2
Effect, drilling rod drive tensioning umbrella anchored end 16 and anchor cable 15 to be rotationally advancing in the soil body together, and the pressure slurries in drilling rod are logical
It crosses in the lower end injection hole of thin-wall steel tube 8, washes away and replace the soil body residue formed in drilling process, and the shape around drilling
Collapse hole is prevented at protective layer.When the drilling of tensioning umbrella anchored end 16 to projected depth, before extracting drilling rod, tenses anchor cable 15 and drive
Removable ring flange 10 is mobile (tensioning) to hole month, and anchor plate 6 can be embedding to peripheral expansion (umbrella) along 4 outer rim of guide plate
Enter to drill the stable soil body in deep, i.e., original state as shown in Figure 1 is transformed to expansion state as shown in Figure 4；When removable method
Blue disk 10 stops stretch-draw anchor 15 when being moved to limit plate 7, extracts drilling rod.
Guide plate 4 forms individual components by fixing pin 9 and anchor plate 6 by pad 3, removable ring flange 10,
In drilling rod connection buckle 1, limit plate 2, limit plate 7, thin-wall steel tube 8 and aerofoil profile drilling piece 12 with revolution drilling rod rotary drilling soil layer
During, which will not generate rotation, can only move together to soil layer deep under the thrusting action of limit plate 2 with drilling rod
It is dynamic, and anchor cable 15 is driven to extend together.To ensure guide plate 4, removable ring flange 10, anchor plate 6 and anchor cable 15 not with thin
Wall steel pipe and aerofoil profile drilling piece 12 rotate, and the middle part opening diameter of guide plate 4 and removable ring flange 10 should be slightly bigger than Steel Thin-Wall
The outer diameter of pipe 8, it is generally preferable to be 1-2cm.
In conjunction with shown in Fig. 6 and Fig. 7, the tensioning umbrella anchored end 16 in the present embodiment when in use, in conjunction with anchor cable 15, earth-retaining
The components such as structure 19, waist rail 22, backing plate 14 and anchor head 13 form anchoring system.As shown in fig. 7, tensioning umbrella anchored end 16 passes through
Unstable soil layer 18 with holding force in steady soil 17, to guarantee the stabilization of anchor force.Soil-baffling structure 19 is arranged in detrimental soil
The periphery of layer 18 is to carry out supporting to it.It is connected to a fixed between anchor cable 15 and soil-baffling structure 19 by waist rail 22.Anchor cable 15 exists
It is divided into free section of anchor cable 20, anchorage cable anchoring section 21 in soil layer, wherein free section of anchor cable 20 refers to non-slip casting section, anchorage cable anchoring section
21 refer to slip casting section.
The present embodiment has following construction procedure:
1) according to slope height, formation physical parameters and code requirement, supporting scheme is calculated, determines that single anchor cable system is anti-
Pull out force, 21 length of anchoring section, 15 spacing of anchor cable etc..
2) according to design parameter, tensioning umbrella anchored end 16 is made, and is connect with anchor cable 15；
3) drilling machine is in place, creeps into tensioning umbrella anchored end 16 to projected depth according to the spacing and direction of design, extracts
Before drilling rod, anchor cable 15,3 stress destruction of pad between guide plate 4 and anchor plate 6 are tensed, removable ring flange 10 slides up
It is dynamic that hinge joint of the anchor plate 6 at fixing pin 9 is caused gradually to rotate and along 4 outer rim of guide plate to peripheral expansion inlay bur
The soil body is stablized in hole deep, to improve the withdrawal resistance and stability of support system.The expansion action of anchor plate 6 is until removable method
Stopping when blue disk 10 is moved to limit plate 7.
4) drilling rod and tensioning umbrella anchored end 16 are disengaged by back-drilling, and extracts drilling rod.
5) to 21 slip casting of anchorage cable anchoring section, after middle grout cures hole to be drilled reach design strength, by anchor cable 15 and anchor head 13
The tensioning equipment at place connects, and applies pretightning force, after pretightning force reaches design value, installs waist rail in the outside of soil-baffling structure 19
22 and backing plate 14, then the locking anchor cable 15 of anchor head 13 is formed into reliable and stable anchoring system.
6) 1) -5 are repeated to each anchor cable system in anchoring system) the step of complete entire anchoring system and construct.
The present embodiment is in the specific implementation: anchor cable 15 can be steel wire, the steel of connection anchor head 13 and removable ring flange 10
Twisted wire or glass fiber-reinforced polymer.
In order to ensure going on smoothly for drilling, anchor plate 6 is avoided to have been inserted into the periphery soil body, anchor plate 6 in drilling process
Initial expanded diameter should be less than aerofoil profile drilling piece 12 expanded diameter.
The quantity of anchor plate 6 is chosen as 4-8 piece, but its distribution equally should be in center centered on the center of circle of thin-wall circular tube 8
It is arranged symmetrically；Similarly, 15 quantity of anchor cable is 2-4 beam, and anchor cable hole 5 and anchor cable hole 11 for connecting anchor cable 15 also should be with thin-walleds
It is centrosymmetric and is provided on guide plate 4 and removable ring flange 10 centered on the center of circle of round tube 8.
Although above embodiments are elaborated referring to conception and embodiment of the attached drawing to the object of the invention, this
Field those of ordinary skill will recognize, still can be right in the case where no disengaging claim limits the precondition of range
The present invention makes various modifications and variations, therefore will not repeat them here.
Claims (6)
1. a kind of anchoring system based on tensioning umbrella anchored end, for carrying out supporting to soil-slope, it is characterised in that: described
Anchoring system include at least tensioning umbrella anchored end and anchor cable, the tensioning umbrella anchored end include at least steel pipe, guide plate, can
Rotary flange disk, anchor plate and two pieces of limit plates, wherein the guide plate and the removable ring flange are sleeved on the steel pipe
Periphery and can be slided on the steel pipe, the inclined outside shape arrangement of the anchor plate, one end and the removable flange
Disk is hinged, and plate body is welded and fixed with the guide plate, and the pulling force of the anchor cable is greater than between the guide plate and anchor plate
The ultimate bearing capacity of pad, two pieces of limit plates are respectively fixedly disposed at the periphery of the steel pipe and are respectively used to described
Guide plate and the removable ring flange are limited, and offer anchor respectively on the guide plate and the removable ring flange
Suo Kong, the anchor cable are connected to a fixed by the anchor cable hole and the guide plate and the removable ring flange, the anchor cable
Tensioning the removable ring flange can be made to slide along the steel pipe and drive the anchor plate along the guide plate outer rim in umbrella
Shape is expanded to the periphery.
2. a kind of anchoring system based on tensioning umbrella anchored end according to claim 1, it is characterised in that: in the soil
Soil-baffling structure is provided on the outside of matter side slope, the anchor cable is locked by anchor head, and the anchor head passes through waist rail and the earth-retaining knot
Structure is connected to a fixed.
3. a kind of anchoring system based on tensioning umbrella anchored end according to claim 1, it is characterised in that: in the steel
The bottom periphery of pipe is fixedly installed aerofoil profile drilling piece, and the aerofoil profile drilling piece is evenly arranged in the bottom of the steel pipe with symmetry shape
Portion periphery.
4. a kind of be related to the application method of any anchoring system based on tensioning umbrella anchored end of claim 1-3,
Be characterized in that: for carrying out supporting to soil-slope, the method is at least included the following steps:
By the way that tensioning umbrella anchored end is fixedly connected with anchor cable in tensioning umbrella anchored end；
Drilling machine is in place, while the tensioning umbrella anchored end being connected with drilling rod, using the tensioning umbrella anchored end as brill
Inlet side pierces the soil body until projected depth；
Before extracting the drilling rod, the anchor cable is tensed, between the guide plate and anchor plate for making the tensioning umbrella anchored end
Pad stress destruction slides removable ring flange along steel pipe and drives the anchor plate along the outer rim of the guide plate to week
The stable soil body of the expansion of side periphery and inlay bur hole deep；
The drilling rod and the tensioning umbrella anchored end are disengaged by back-drilling, and extract the drilling rod；
To bore inner slip casting, after middle grout cures hole to be drilled reach design strength, tensioning is carried out to the anchor cable and is applied pre-
Clamp force is connected firmly the anchor cable and anchor head to form anchoring system after pretightning force reaches design value.
5. a kind of application method of anchoring system based on tensioning umbrella anchored end according to claim 4, feature exist
In: in the drilling process of the tensioning umbrella anchored end and the drilling rod, Xiang Suoshu inner pressure inside pipe slip casting, pressure slurries lead to
It crosses in the lower end injection hole of the thin-wall steel tube of the tensioning umbrella anchored end, wash away and replaces the soil body formed in drilling process
Residue, and protective layer is formed around drilling.
6. a kind of application method of anchoring system based on tensioning umbrella anchored end according to claim 4, feature exist
In: after drilling, the pulling force for tensing the anchor cable is greater than the ultimate bearing of the pad between the guide plate and anchor plate
Power records pulling force and displacement in the cinching process of the anchor cable, when its displacement is close to the removable ring flange and its right
Stopping when length between the limit plate answered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710440438.5A CN107034882B (en) | 2017-06-13 | 2017-06-13 | A kind of anchoring system and its application method based on tensioning umbrella anchored end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710440438.5A CN107034882B (en) | 2017-06-13 | 2017-06-13 | A kind of anchoring system and its application method based on tensioning umbrella anchored end |
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| Publication Number | Publication Date |
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| CN107034882A CN107034882A (en) | 2017-08-11 |
| CN107034882B true CN107034882B (en) | 2019-04-26 |
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| CN201710440438.5A Active CN107034882B (en) | 2017-06-13 | 2017-06-13 | A kind of anchoring system and its application method based on tensioning umbrella anchored end |
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| CN109267571A (en) * | 2018-11-08 | 2019-01-25 | 兰州理工大学 | There are the anchors and its construction method under cavity condition in a kind of slopes |
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| CN109898527B (en) * | 2019-02-28 | 2020-12-15 | 广西交通设计集团有限公司 | Bamboo-root-shaped interlocking anchor bar pile and construction method for reinforcing unstable rock slope |
| CN110410124A (en) * | 2019-08-21 | 2019-11-05 | 周艳君 | Anchoring process and anchorage element device can be recycled in one kind falling leaf formula |
| CN111733808A (en) * | 2020-06-21 | 2020-10-02 | 中铁二院贵阳勘察设计研究院有限责任公司 | Umbrella-shaped anchoring device capable of realizing rapid tensioning of anchor cable and reinforcement engineering construction method |
| CN113125194A (en) * | 2021-03-02 | 2021-07-16 | 绍兴文理学院 | Rock mechanics testing machine capable of effectively preventing soil drilling collapse accident |
| CN113136875B (en) * | 2021-04-29 | 2022-03-08 | 江苏科技大学 | Foundation pit supporting structure and construction method thereof |
| CN113047881B (en) * | 2021-05-07 | 2023-09-26 | 南京博联特光电科技有限公司 | GFRP intelligent combined anchor rod suitable for subway roadway support and construction method |
| CN113174975A (en) * | 2021-05-08 | 2021-07-27 | 青海大学 | Ecological protection slope for recovering vegetation on deteriorated grassland |
| CN114737565B (en) * | 2022-04-29 | 2023-03-03 | 中国矿业大学 | Fully-recyclable distributed end-bearing anchor rod and construction method thereof |
| CN114790735A (en) * | 2022-05-10 | 2022-07-26 | 长江水利委员会长江科学院 | Method for realizing cooperative uplift resistance of umbrella-shaped anchor and grouting body |
| CN115030158B (en) * | 2022-05-27 | 2023-07-18 | 中铁第六勘察设计院集团有限公司 | Assembled device for lifting large-diameter cast-in-place pile and green construction method |
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| JPH05239830A (en) * | 1992-02-27 | 1993-09-17 | East Japan Railway Co | Method of mechanical type earth anchor construction and anchor body |
| CN2451634Y (en) * | 2000-08-09 | 2001-10-03 | 合肥工业大学 | Expansion anchor |
| CN2542724Y (en) * | 2002-05-23 | 2003-04-02 | 谭跃虎 | Composite earth anchor for supporting construction |
| CN102518132A (en) * | 2012-01-09 | 2012-06-27 | 长江水利委员会长江科学院 | Tensioned self-locking umbrella type anchor and soil slope reinforcement method |
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| JPH05239830A (en) * | 1992-02-27 | 1993-09-17 | East Japan Railway Co | Method of mechanical type earth anchor construction and anchor body |
| CN2451634Y (en) * | 2000-08-09 | 2001-10-03 | 合肥工业大学 | Expansion anchor |
| CN2542724Y (en) * | 2002-05-23 | 2003-04-02 | 谭跃虎 | Composite earth anchor for supporting construction |
| CN102518132A (en) * | 2012-01-09 | 2012-06-27 | 长江水利委员会长江科学院 | Tensioned self-locking umbrella type anchor and soil slope reinforcement method |
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| CN107034882A (en) | 2017-08-11 |
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Inventor after: Zhou Zilin Inventor after: Bian Yuewei Inventor after: Sheng Yingping Inventor after: Guo Jinsong Inventor after: Yang Zhihao Inventor after: Zeng Yi Inventor after: Ni Ting Inventor after: Ding Pengfei Inventor after: Xing Min Inventor before: Zhou Zilin Inventor before: Bian Yuewei Inventor before: Guo Jinsong Inventor before: Yang Zhihao Inventor before: Zeng Yi Inventor before: Ni Ting Inventor before: Ding Pengfei Inventor before: Xing Min |