CN208996031U - A kind of energy consumption antidetonation prestress anchorage cable - Google Patents
A kind of energy consumption antidetonation prestress anchorage cable Download PDFInfo
- Publication number
- CN208996031U CN208996031U CN201821601180.9U CN201821601180U CN208996031U CN 208996031 U CN208996031 U CN 208996031U CN 201821601180 U CN201821601180 U CN 201821601180U CN 208996031 U CN208996031 U CN 208996031U
- Authority
- CN
- China
- Prior art keywords
- anchor
- anchorage
- energy consumption
- anchoring sleeve
- anchoring
- 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.)
- Active
Links
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a kind of energy consumption antidetonation prestress anchorage cable, including there are guiding end in anchoring section, free segment and energy consumption anchor, anchoring section end, by Grouting Pipe slip casting by anchorage cable anchoring in basement rock；The free segment can apply prestressing force by jack；The energy consumption anchor is made of anchorage, high-strength compressed spring, lead for retractable pencil, anchoring sleeve, anchor plate.Anchor cable sequentially passes through anchor plate, lead for retractable pencil, the aperture on anchorage, and it is solid on anchorage to apply pre-stress rear anchor through stretch-draw jack.When earthquake occurs, slip mass glides and then extruding anchor plate, high-strength spring-compressed, and the lead for retractable pencil in the anchor that consumes energy is extruded anchoring sleeve hole, generates and squeezes energy consumption, while anchorage side and anchoring sleeve inner wall generation friction energy-dissipating, and can effectively dissipate seismic energy.By squeezing high strong spring, the length of free section of anchor cable allows slip mass that certain displacement occurs, can effectively avoid anchor cable and be pulled off, to achieve the purpose that energy dissipation and protect anchor cable.
Description
Technical field
The utility model relates to anchor cable structure, in particular to it is anti-to belong to slope project for a kind of energy consumption antidetonation prestress anchorage cable
Shake field.
Background technique
Prestress anchorage cable is used widely in the landslide control engineering of side, with the perfect rigidities branch such as friction pile, retaining wall
Protection structure is compared, and certain elastic displacement can occur for geological process lower prestress anchor cable, thus have preferable anti-seismic performance.Such as
A kind of adaptive quake-proof anchor rope structure of energy dissipating disclosed in the Chinese utility model patent of Patent No. 201410751411.4 and
Implementation method.
But slip mass would generally generate biggish displacement when earthquake generation, the elastic position that can be generated greater than prestress anchorage cable
The limit is moved, leads to that anchor cable is pulled off or anchor head destroys, to lose protective function, Earthquake-landslide occurs.
In view of the above-mentioned problems, the utility model proposes a kind of energy consumption antidetonation prestress anchorage cables, by using special energy consumption
Anchor improves the anti-seismic performance of existing prestress anchorage cable, guarantees stability of the side slope behind earthquake centre and shake.
Utility model content
The technical problem to be solved by the utility model is to provide one kind can dissipate a large amount of seismic energies, avoid anchor cable from being drawn
The disconnected energy consumption antidetonation prestress anchorage cable destroyed.
To solve the above problems, technical solution adopted in the utility model is:
A kind of energy consumption antidetonation prestress anchorage cable comprising anchoring section, free segment and energy consumption anchor, key technology exist
In:
The anchor that the energy consumption anchor includes the anchor plate being fixed on concrete anchor pier, is fixed on the anchor plate
Gu sleeve, the spring being arranged in the anchoring sleeve, lead for retractable pencil and anchorage, the spring be folded in the anchorage and anchor plate it
Between, the lead for retractable pencil original outer diameter is less than the spring inside diameter, and lead for retractable pencil is placed in the spring, is arranged on the anchoring sleeve side wall
There are several through-holes；
Steel strand wires one end is fixed in anchoring section, and the other end sequentially passes through anchor plate, lead for retractable pencil and anchorage, through stretch-draw jack
It is solid on anchorage to apply pre-stress rear anchor, after applying prestressing force to steel strand wires, anchorage is pushed, and is full of anchorage, anchor after lead for retractable pencil deformation
Space between backing plate and anchoring sleeve, anchor cable are in normal use working condition.
The anchoring sleeve cross section is in circular ring shape as a further improvement of the utility model, and anchoring sleeve inner wall is set
There is small taper, anchoring sleeve internal diameter reduces along anchorage toward anchor plate direction, when moving to increase anchorage to anchor plate direction
Frictional force between anchoring sleeve.
The anchoring sleeve inner-wall spraying has inorganic friction coatings as a further improvement of the utility model, to increase
Coefficient of friction between anchorage and anchoring sleeve.
Several through-holes are equal in blossom type on the anchoring sleeve side wall as a further improvement of the utility model,
Even arrangement.
The spring is in compressive state as a further improvement of the utility model, and counter-force is equal to the design of anchor cable
Pulling force, it is in state of plastic deformation that the spring, which is more than after setting pressure threshold, can maintain the pressure of setting and biggish change occurs
Shape.
The hole with numbers such as the steel strand wires is provided on the anchorage as a further improvement of the utility model, it is described
Intermediate plate is provided in hole is fixed on the steel strand wires on the anchorage.
It is provided with and the numbers such as the steel strand wires on the lead for retractable pencil and anchor plate as a further improvement of the utility model,
Hole.
The anchoring sleeve and the anchor plate are integrally welded as a further improvement of the utility model, the anchor
Gu circumferentially spaced-apart uniform welding is provided with ribbed stiffener between sleeve outer wall and anchor plate.
The beneficial effects of adopting the technical scheme are that
Energy consumption antidetonation prestress anchorage cable disclosed by the utility model is under static(al) operating condition, the support action of side slope and general
Logical prestress anchorage cable is identical；But in earthquake, energy consumption antidetonation prestress anchorage cable can play good anti-seismic performance, can dissipate big
The seismic energy of amount avoids anchor cable from being pulled off destruction, achievees the purpose that antidetonation.
Specifically, the energy consumption anchor of the utility model has dual energy consumption mechanism, first is that anchorage side and anchoring
The friction energy-dissipating of sleeve lining, second is that the extruding of lead for retractable pencil is consumed energy.In addition, by squeezing high strong spring, the flexible deformation of spring and/
Or it is plastically deformed the length so that free section of anchor cable, to allow slip mass that certain displacement occurs, slip mass itself can
Dissipate sizable displacement energy consumption.Energy consumption anchor and slip mass itself energy consumption have effectively dissipated inputting seismic energy, have
Effect is improved by the Seismic Stability of slope supported.After the length of free section of anchor cable, can effectively avoid anchor cable because overload or
Person's deformation is excessive to be destroyed, to achieve the purpose that energy dissipation and protect anchor cable.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the assembling unit structure schematic diagram of the utility model anchoring sleeve and anchor plate.
Fig. 3 is the structural schematic diagram of the anchor that consumes energy when the utility model does not apply prestressing force.
Fig. 4 is the structural schematic diagram of the energy consumption anchor of the utility model normal use working condition.
Wherein: 1 energy consumption anchor, 11 anchoring sleeves, 111 through-holes, 112 inorganic friction coatings, 12 anchor plates, 121 steel
Twisted wire hole, 13 ribbed stiffeners, 14 anchorages, 15 intermediate plates, 16 springs, 17 lead for retractable pencils, 18 concrete anchor piers, 2 free section of anchor cable, 21 steel twist
Line, 22 Grouting Pipes, 3 anchorage cable anchoring sections, 31 guiding ends.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, combined with specific embodiments below to practical
It is novel to carry out clear, complete description, it is to be understood that term " center ", " vertical ", " transverse direction ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" be based on
Orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the utility model.
A kind of energy consumption antidetonation prestress anchorage cable as shown in Figs 1-4 comprising anchoring section 3, free segment 2 and energy consumption anchoring dress
1 is set, 3 end of anchoring section is provided with guiding end 31, and steel strand wires 21 are anchored in basement rock by 22 slip casting of Grouting Pipe.
The energy consumption anchor 1 includes the anchor plate 12 being fixed on concrete anchor pier 18, is fixed on the anchor plate
Anchoring sleeve 11 on 12, spring 16, lead for retractable pencil 17 and the anchorage 14 being arranged in the anchoring sleeve 11, the anchoring sleeve 11
Integrally welded with the anchor plate 12, circumferentially spaced-apart uniform welding is set between 11 outer wall of anchoring sleeve and anchor plate 12
It is equipped with ribbed stiffener 13, for increasing the structural strength between anchoring sleeve 11 and anchor plate 12.
The spring 16 uses high-strength compressed spring, and the spring 16 is folded between the anchorage 14 and anchor plate 12,
The both ends of spring 16 are connect with anchor plate 12 and anchorage 14 respectively, and the rigidity of the spring 16 is determined according to anchor cable working pulling force.
As shown in Figures 3 and 4,17 outer diameter of lead for retractable pencil is less than 16 internal diameter of spring, and lead for retractable pencil 17 is placed in the spring 16,
Several through-holes 111 are provided on 11 side wall of sleeve, several through-holes 111 are in plum blossom on 11 side wall of anchoring sleeve
Type is evenly arranged；A plurality of 21 one end of steel strand wires is fixed in anchoring section 3, and the other end sequentially passes through anchor plate 12, lead for retractable pencil 17 and anchor
Tool 14 applies pre-stress rear anchor admittedly on anchorage 14 through stretch-draw jack, applies prestressing force to steel strand wires 21, and anchorage 14 pushes,
Lead for retractable pencil 17 is full of the space between anchorage 14, anchor plate 12 and anchoring sleeve 11 after deforming, lead for retractable pencil 17 is squeezed into the through-hole
111, spring 16 is in compressive state, and is wrapped up by deformed lead for retractable pencil 17, and anchor cable is in normal use working condition.At anchor cable
When working condition, the pressure that spring 16 is born is equal to the design pulling force of anchor cable.When earthquake occurs, anchor cable pulling force increases, spring
16, more than being in state of plastic deformation after the pressure threshold of setting, can maintain the pressure of setting and biggish deformation occurs；If bullet
Spring 16 is in elastic stage always, and the decrement and pressure of spring 16 are directly proportional, the displacement that anchorage occurs with respect to anchoring sleeve compared with
Small, energy consumption effect is poor, and anchor cable pulling force is excessive when generating larger displacement, and anchor cable is easy to happen rupture failure；And this is practical
In novel, plastic deformation is just generated after spring 16 is more than certain pressure threshold, makes anchorage phase while maintaining the pressure
Biggish displacement is occurred to anchoring sleeve, and then energy consumption anchor 1 is made to generate biggish energy consumption；At the same time, anchor cable is free
The length of section can effectively avoid anchor cable because of overload or change to allow slip mass that certain displacement and energy consumption occurs
Shape is excessive to be destroyed, to achieve the purpose that energy dissipation and protect anchor cable.
The hole with the equal numbers of the steel strand wires 21 is provided on the anchorage 14, being provided with intermediate plate 15 in the hole makes the steel
Twisted wire 21 is fixed on the anchorage 14.The steel strand wires hole with the equal numbers of the steel strand wires 21 is provided on the anchor plate 12
121, the hole with the equal numbers of the steel strand wires 21 is also equipped on the lead for retractable pencil 17, for passing through steel strand wires 21.
As shown in Figures 2 and 3,11 cross section of anchoring sleeve is in circular ring shape, and 11 inner wall of anchoring sleeve is equipped with small cone
Degree, 11 internal diameter of anchoring sleeve reduces along anchorage 14 toward 12 direction of anchor plate, when being moved with increasing anchorage 14 to 12 direction of anchor plate
Frictional force between anchoring sleeve 11.11 inner-wall spraying of anchoring sleeve has the inorganic friction coatings 112 of great friction coefficient,
To increase the coefficient of friction between anchorage 14 and anchoring sleeve 11.By being equipped with small taper in 11 inner wall of anchoring sleeve
With inorganic friction coatings 112, the frictional force of anchorage 14 Yu 11 inner wall of anchoring sleeve is considerably increased, to increase earthquake
When the energy that can dissipate of anchor cable.
Energy consumption anchor 1 described in the utility model has dual energy consumption mechanism, i.e. lead for retractable pencil 17 squeezes energy consumption, Yi Jimao
Friction energy-dissipating between tool 14 and anchoring sleeve 11.When earthquake occurs, slip mass glides and then squeezes anchor plate 12, and spring 16 is received
Contracting, lead for retractable pencil 17 are extruded the through-hole 111 on 11 barrel of anchoring sleeve, generate and squeeze energy consumption；14 side of anchorage and anchoring cartridge simultaneously
Friction energy-dissipating occurs for 11 inner walls of cylinder, and can effectively dissipate seismic energy.By squeezing high strong spring 16, the length of the free segment 2 of anchor cable
It spends elongated, allows slip mass that certain displacement occurs and generate displacement energy consumption, while can effectively avoid anchor cable and being pulled off, to reach
To energy dissipation and protect the purpose of anchor cable.
Anchoring section 3 described in the utility model has construction identical with common prestress anchorage cable, steel strand wires 21 with free segment 2
One end is fixedly connected with guiding end 31, and when construction, anchor cable hole is first bored on slip mass, then will guiding end 31 and steel strand wires
21 are packed into anchor cable hole, and anchoring section 3 is mounted in basement rock by 22 slip casting of Grouting Pipe.Then applying for concrete anchor pier 18 is completed again
Then work installs energy consumption anchor 1 again.
It is illustrated in figure 3 the original state of installation energy consumption anchor 1, anchoring cartridge is successively installed on concrete anchor pier 18
Assembly, spring 16, lead for retractable pencil 17, the anchorage 14 of cylinder 11 and anchor plate 12.Steel strand wires 21 sequentially pass through the aperture of anchor plate 12
121 and lead for retractable pencil 17, anchorage 14 on hole, and steel strand wires 21 are fixed on anchorage 14 by intermediate plate 15.At this time outside lead for retractable pencil 17
Diameter is less than high-strength 16 internal diameter of compressed spring.Stretch-draw jack is installed on anchorage 14, prestressing force is applied to anchor cable, as shown in figure 4,
Anchorage 14 pushes, and lead for retractable pencil 17 is full of the space between anchorage 14, anchor plate 12 and anchoring sleeve 11 after deforming.High-strength compressed spring
16 are in elastic stage, and the pressure born is equal to anchorage cable design pulling force.After the completion of prestress application, anchor cable is in normal use
Working condition (static(al) operating condition).
When earthquake occurs, potential slip mass glides, and drives and moves outside anchor plate 12 and anchoring sleeve 11, anchorage 14 and anchor plate
12, relative motion occurs for anchoring sleeve 11, and in the process, 14 side of anchorage and 11 inner wall of anchoring sleeve generate friction energy-dissipating,
17 anchorage 14 of lead for retractable pencil is squeezed, and part lead for retractable pencil is extruded the through-hole 111 on anchoring sleeve barrel, generates and squeezes energy consumption.Meanwhile it is high
Strong compressed spring 16 is compressed, the length of free section of anchor cable, and after anchor cable pulling force is more than the pressure threshold of setting, height is suppressed
Contracting spring 16 is in state of plastic deformation, and free section of anchor cable length is further elongated, and makes anchor cable will not in the displacement range of permission
Overload failure, while allowing slip mass that corresponding displacement, the friction energy-dissipating for the anchor that consumes energy and extruding energy consumption, Yi Jiqian occurs
It consumes energy in the displacement of slip mass, effectively dissipated inputting seismic energy, thus achieve the purpose that energy dissipation and protect anchor cable,
The Seismic Stability for improving side slope ensure that the normal support action of anchor cable after shake.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It can still modify to technical solution documented by previous embodiment, or be equal to part of technical characteristic
Replacement；And these are modified or replaceed, the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
Spirit and scope.
Claims (8)
1. a kind of energy consumption antidetonation prestress anchorage cable comprising anchoring section (3), free segment (2) and energy consumption anchor (1), it is special
Sign is:
Energy consumption anchor (1) includes the anchor plate (12) being fixed on concrete anchor pier (18), is fixed on the anchor pad
Spring (16), lead for retractable pencil (17) and the anchorage (14) of anchoring sleeve (11), setting in the anchoring sleeve (11) on plate (12),
The spring (16) is folded between the anchorage (14) and anchor plate (12), and lead for retractable pencil (17) original outer diameter is less than the bullet
Spring (16) internal diameter, lead for retractable pencil (17) are placed in the spring (16), are provided with several through-holes on anchoring sleeve (11) side wall
(111)；
Steel strand wires (21) one end is fixed in anchoring section (3), and the other end sequentially passes through anchor plate (12), lead for retractable pencil (17) and anchorage
(14), apply pre-stress rear anchor admittedly on anchorage (14) through stretch-draw jack, prestressing force, anchorage (14) are applied to steel strand wires (21)
It pushes, full of the space between anchorage (14), anchor plate (12) and anchoring sleeve (11) after lead for retractable pencil (17) deformation, anchor cable is in just
It is often used working condition.
2. a kind of energy consumption antidetonation prestress anchorage cable according to claim 1, it is characterised in that: the anchoring sleeve (11) is horizontal
Section is in circular ring shape, and anchoring sleeve (11) inner wall is equipped with small taper, and anchoring sleeve (11) internal diameter is along anchorage (14) past anchor pad
Plate (12) direction reduces, to increase friction when anchorage (14) is moved to anchor plate (12) direction between anchoring sleeve (11)
Power.
3. a kind of energy consumption antidetonation prestress anchorage cable according to claim 1 or 2, it is characterised in that: the anchoring sleeve
(11) inner-wall spraying has inorganic friction coatings (112), to increase the coefficient of friction between anchorage (14) and anchoring sleeve (11).
4. a kind of energy consumption antidetonation prestress anchorage cable according to claim 1, it is characterised in that: several through-holes (111)
It is evenly arranged on the anchoring sleeve (11) side wall in blossom type.
5. a kind of energy consumption antidetonation prestress anchorage cable according to claim 1, it is characterised in that: the spring (16) is in pressure
Contracting state, counter-force be equal to anchor cable design pulling force, the spring (16) be more than setting pressure threshold after in plastic deformation shape
State.
6. a kind of energy consumption antidetonation prestress anchorage cable according to claim 1, it is characterised in that: be arranged on the anchorage (14)
There is the hole with numbers such as the steel strand wires (21), being provided with intermediate plate (15) in the hole makes the steel strand wires (21) be fixed on the anchor
Have on (14).
7. a kind of energy consumption antidetonation prestress anchorage cable according to claim 1, it is characterised in that: the lead for retractable pencil (17) and anchor pad
The hole with numbers such as the steel strand wires (21) is provided on plate (12).
8. a kind of energy consumption antidetonation prestress anchorage cable according to claim 1, it is characterised in that: the anchoring sleeve (11) with
The anchor plate (12) is integrally welded, circumferentially spaced-apart uniform weldering between anchoring sleeve (11) outer wall and anchor plate (12)
It connects and is provided with ribbed stiffener (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821601180.9U CN208996031U (en) | 2018-09-29 | 2018-09-29 | A kind of energy consumption antidetonation prestress anchorage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821601180.9U CN208996031U (en) | 2018-09-29 | 2018-09-29 | A kind of energy consumption antidetonation prestress anchorage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208996031U true CN208996031U (en) | 2019-06-18 |
Family
ID=66803015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821601180.9U Active CN208996031U (en) | 2018-09-29 | 2018-09-29 | A kind of energy consumption antidetonation prestress anchorage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208996031U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083144A (en) * | 2018-09-29 | 2018-12-25 | 石家庄铁道大学 | A kind of energy consumption antidetonation prestress anchorage cable |
| CN112144549A (en) * | 2020-09-18 | 2020-12-29 | 同济大学 | Energy-consuming and shock-absorbing type landslide pile-anchor supporting system suitable for strong earthquake area |
| CN112663605A (en) * | 2020-12-17 | 2021-04-16 | 山东建筑大学 | Anchoring device, pre-stressed anchoring structure and construction method thereof |
-
2018
- 2018-09-29 CN CN201821601180.9U patent/CN208996031U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083144A (en) * | 2018-09-29 | 2018-12-25 | 石家庄铁道大学 | A kind of energy consumption antidetonation prestress anchorage cable |
| CN109083144B (en) * | 2018-09-29 | 2023-12-19 | 石家庄铁道大学 | Energy-consumption anti-seismic prestressed anchor cable |
| CN112144549A (en) * | 2020-09-18 | 2020-12-29 | 同济大学 | Energy-consuming and shock-absorbing type landslide pile-anchor supporting system suitable for strong earthquake area |
| CN112144549B (en) * | 2020-09-18 | 2022-10-11 | 同济大学 | Energy-consuming and shock-absorbing type landslide pile-anchor supporting system suitable for strong earthquake area |
| CN112663605A (en) * | 2020-12-17 | 2021-04-16 | 山东建筑大学 | Anchoring device, pre-stressed anchoring structure and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208996031U (en) | A kind of energy consumption antidetonation prestress anchorage cable | |
| CN109083144A (en) | A kind of energy consumption antidetonation prestress anchorage cable | |
| CN108442569B (en) | Function-recoverable energy consumption reinforced concrete shear wall and construction method thereof | |
| CN103016035B (en) | Abdicating buffer energy-absorbing shock-proof anchor rod cable for coal mine | |
| CN207080233U (en) | The hard and soft bow member of large-deformation tunnel in soft rock supporting | |
| CN102619226B (en) | Pressure dispersion type yielding anchor cable | |
| CN108360903B (en) | Damper supporting device for constructional engineering and construction method thereof | |
| CN109083000B (en) | Combined type multistage anti-collision and beam-falling device for anti-seismic bridge based on BRB technology | |
| CN111042127B (en) | Construction method of energy-consumption self-recovery pressure type anchor rod | |
| CN104674941A (en) | Tubular structure system capable of restoring functions | |
| CN205369011U (en) | Continuous bridge subregion control connection damping device | |
| CN103758550A (en) | Liquid-expansion type yielding anti-seismic high-ground-temperature-resistant anchor bolt | |
| CN102094662A (en) | Friction sleeve type large deformation anchor rod | |
| CN109162743A (en) | A kind of quasi- constant resistance and large deformation anchor cable of friction-shearing combined type | |
| CN107489437A (en) | A kind of anchor pole and anchoring process for deep tunnel soft-rock slope | |
| CN211735381U (en) | Pressure type shock attenuation energy dissipation prestressed anchorage pole structure | |
| CN210396775U (en) | Yielding anchor rod capable of self-recovering deformation | |
| CN104727317B (en) | A kind of combinative structure reducing prestressd anchor cable loss | |
| CN211816221U (en) | Pressure type shock attenuation energy dissipation prestressed anchorage cable structure | |
| CN105735115A (en) | Connecting shock absorption device for continuous girder bridge zone control | |
| CN202228096U (en) | Conical-blocking type friction sleeve large-deformation anchor rod | |
| CN207212381U (en) | A kind of anchor pole for deep tunnel soft-rock slope | |
| CN110863490B (en) | Pressure type damping energy dissipation prestress anchor cable structure and construction method | |
| CN218177258U (en) | Constant-resistance yielding anchor rod | |
| CN206071627U (en) | Energy-consumption impact-reduction anchor rod device for underground deep well roadway |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |