CN109385996A - A kind of soil nailing applies prestressed device and construction method - Google Patents
A kind of soil nailing applies prestressed device and construction method Download PDFInfo
- Publication number
- CN109385996A CN109385996A CN201710678413.9A CN201710678413A CN109385996A CN 109385996 A CN109385996 A CN 109385996A CN 201710678413 A CN201710678413 A CN 201710678413A CN 109385996 A CN109385996 A CN 109385996A
- Authority
- CN
- China
- Prior art keywords
- soil nailing
- centre
- hole jack
- soil
- screw
- 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.)
- Pending
Links
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
- 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
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
Abstract
The invention discloses a kind of soil nailings to apply prestressed device and construction method, belongs to Geotechnical Engineering field.The present invention applies prestressed device to soil nailing, it is characterised in that it includes with soil nailing (8) coaxial arrangement long nut (3) together, reinforcing bracket (5), centre-hole jack (4), afterburner screw (2), tool nut (1)；The present invention can apply prestressing force to soil nailing 8, and prestressed technological deficiency cannot be applied by changing soil nailing in the prior art.Device for prestressing of the invention is by reinforcing bracket (5), afterburner screw (2), centre-hole jack (4), tool nut (1), centre-hole jack (4) movement is driven by starting high-pressure oil pump, prestressing force is applied to soil nailing (8) by centre-hole jack (4), to achieve the purpose that control foundation pit supporting project and slope support engineering displacement；The safety for guaranteeing foundation pit or side slope periphery, avoids building destruction from bringing about great losses.
Description
Technical field
The invention belongs to Geotechnical Engineering fields, more specifically, belonging to a kind of for base pit engineering and slope project
Plate brad supporting.
Background technique
Plate brad supporting in the prior art is widely used in foundation pit supporting project or slope support engineering, the prior art
In soil nailing be without tensioning, soil nailing belongs to passive stress, because only that Rock And Soil occur lateral deformation after soil nailing
Ability stress then could play reinforcement effect to foundation pit supporting project or slope support engineering.This plate brad supporting form
One fatal defects is that the deformation of foundation pit or side slope side wall is bigger than normal, and often the building to its periphery or lifeline cause bad shadow
It rings and even destroys.Therefore the deformation for how reducing plate brad supporting foundation pit or side slope side wall, is one of geotechnical anchor engineering field
Problem.
Summary of the invention
The present invention gives a kind of soil nailing and applies prestressed device and construction to efficiently solve the above technical problem
Method.
A kind of pair of soil nailing of the invention applies prestressed device, which is characterized in that including being co-axially located at one with soil nailing
Long nut, the reinforcing bracket, centre-hole jack, afterburner screw, tool nut risen, in which:
Soil nailing is connected by long nut with afterburner screw, and reinforcing bracket is coaxially arranged in series with centre-hole jack, punching
One end of formula jack and tool nut are in contact, the other end and reinforcing bracket are in contact, and reinforce one end and the branch nurse of bracket
Journey is in contact, the other end and centre-hole jack are in contact.
According to above-described afterburner screw, preferably: centre-hole jack is connected with high-pressure oil pump, and high-pressure oil pump drive is worn
Core type jack pair soil nailing applies prestressing force.
According to above-described afterburner screw, preferably: being threadedly engaged between soil nailing and long nut, afterburner screw and long nut
Between be threadedly engaged.
According to above-described afterburner screw, preferably: being threadedly engaged between afterburner screw and tool nut.
According to above-described afterburner screw, preferably: it is 60-120mm that the diameter of afterburner screw, which is 30-60mm, length,.
According to above-described afterburner screw, preferably: reinforcing bracket includes round plate with holes and reinforcing bracket supporting leg welding
It forms, diameter 200-300mm, the thickness 20-30mm of round plate with holes, reinforces high 300-400mm, the width 100- of bracket supporting leg
150mm, thickness 15-25mm.
A kind of pair of soil nailing of the invention applies prestressed construction method, which comprises the following steps:
S1, the setting construction operation that soil nailing is first completed on the wall of foundation pit supporting project or slope support engineering；
S2, start soil nailing reinforcing operation, afterburner screw is screwed in the end of soil nailing；
S3, reinforcing bracket is arranged in soil nailing bearing structure, is set on the afterburner screw rod；
S4, centre-hole jack being set on the afterburner screw rod, one end of centre-hole jack is connected with reinforcing bracket, and
Set on the afterburner screw rod, is tightened with tool nut, and centre-hole jack connects high-pressure oil pump；
S5, starting high-pressure oil pump carry out pre- tensioning to soil nailing, and centre-hole jack applies drawing force, in turn to afterburner screw
Prestress force is applied to soil nailing, high-pressure oil pump oil return release after certain pretension is applied with to soil nailing；
S6, high-pressure oil pump is restarted to the formal tensioning of soil nailing progress, soil nailing is applied with after reaching maximum pull and tightens soil nailing
End nut is completed to load the prestressing force of soil nailing；
S7, then high-pressure oil pump unloads oil return, unloads centre-hole jack, afterburner screw of backing off；It is completed after construction operation
To the application prestressing force of soil nailing.
Prestressed construction method is applied to soil nailing according to above-described, it is preferable that sequentially wrap in S1 step
It includes and bores soil nailing hole on the wall of foundation pit supporting project or slope support engineering, soil nailing is set into soil nailing hole, to being provided with soil nailing
Soil nailing hole in slip casting, on the wall of foundation pit supporting project or slope support engineering spray crater wall concrete, setting soil nailing carry
Structure sprays facing concrete on the wall of foundation pit supporting project or slope support engineering, tightens end nut on soil nailing.
Prestressed construction method is applied to soil nailing according to above-described, it is preferable that infuse in soil nailing hole in S2 step
Slurry reaches 80% progress soil nailing reinforcing operation later of design strength, and afterburner screw is screwed in the end of soil nailing.
Prestressed construction method is applied to soil nailing according to above-described, it is preferable that in the end of soil nailing in S4 step
Three-legged support is set, differential chain block is mounted on three-legged support, slings centre-hole jack with differential chain block, by punching thousand
Jin top cover dress on the afterburner screw rod, and withstands on reinforcing carrier head.
The present invention has the characteristics that structure is simple, reliable performance compared with prior art；The present invention can apply soil nailing
Prestressing force, prestressed technological deficiency cannot be applied by changing soil nailing in the prior art.Device for prestressing of the invention by
Bracket, afterburner screw, centre-hole jack, tool nut are reinforced, centre-hole jack movement is driven by starting high-pressure oil pump,
Prestressing force is applied to soil nailing by centre-hole jack.
Tensioning can be implemented to soil nailing through the invention, apply prestressing force, change the status that soil nailing is unable to tensioning；Soil nailing
After tensioning, active support state is become from the passive protecting state of traditional soil nailing, foundation pit or slope soil can be controlled well
Deformation reduces the sidewall displacement of plate brad supporting foundation pit or side slope, to ensure that foundation pit or side slope surrounding building or lifeline
Safety, avoid the destruction of building or lifeline and cause huge loss.
Detailed description of the invention
Attached drawing 1 is the foundation pit side-wall diagrammatic cross-section that pattern foundation pit supporting structure of the present invention is completed；
Attached drawing 2 is overall schematic of the present invention；
Attached drawing 3 is afterburner screw schematic diagram of the present invention；
Attached drawing 4A is present invention reinforcing support schematic diagram one；
Attached drawing 4B is present invention reinforcing support schematic diagram two；
Attached drawing 5A is that soil nailing of the present invention applies prestressed construction procedure schematic diagram one；
Attached drawing 5B is that soil nailing of the present invention applies prestressed construction procedure schematic diagram two；
Attached drawing 5C is that soil nailing of the present invention applies prestressed construction procedure schematic diagram three.
Drawing reference numeral: 1, tool nut, 2, afterburner screw, 3, long nut, 4, centre-hole jack, 5, reinforcing bracket, 6,
Round plate with holes, 7, reinforcing bracket supporting leg, 8, soil nailing, 9, facing concrete, 10, crater wall concrete, 11, soil nailing bearing structure,
12, soil nailing end nut.
Specific embodiment
Fig. 1 is the foundation pit side-wall diagrammatic cross-section that pattern foundation pit supporting structure of the present invention is completed；The present invention provides a set of soil nailing tensioning
Loading equipemtn and its construction method apply a certain amount of pretension to soil nailing, reduce foundation pit or side slope sidewall displacement, guarantee foundation pit
Or the safety of side slope surrounding building or lifeline, it avoids the destruction of building or lifeline and causes huge loss.Crater wall
Concrete can be widely applied in the Soil-Nailing Wall Structure of foundation pit supporting project or slope support engineering.
Fig. 2 is overall schematic of the present invention；Of the invention includes coaxially setting with soil nailing 8 to the prestressed device of soil nailing application
Set long nut 3, reinforcing bracket 5, centre-hole jack 4, afterburner screw 2, tool nut 1 together, in which: soil nailing 8 passes through
Long nut 3 is connected with afterburner screw 2, and reinforcing bracket 5 is coaxially arranged in series with centre-hole jack 4, and the one of centre-hole jack 4
End and tool nut 1 be in contact, the other end and reinforcing bracket 5 be in contact, reinforce bracket 5 one end and support engineering be in contact,
The other end and centre-hole jack 4 are in contact.Centre-hole jack 4 is connected with high-pressure oil pump, and high-pressure oil pump drives punching thousand
Jin pushes up 4 pairs of soil nailings 8 and applies prestressing force.It is threadedly engaged between soil nailing 8 and long nut 3, screw thread between afterburner screw 2 and long nut 3
Cooperation, is threadedly engaged between afterburner screw 2 and tool nut 1.
Fixation is tightened for foundation pit or the soil nailing 8 of slope retaining, end soil nailing end nut 12 in the present invention.By band
One end cap of nut is on the screw rod of soil nailing end and tightens.A gate-type reinforcing bracket is made, reinforcing carrier head is circular steel
Plate, steel plate center are equipped with circular hole, and two columns are welded in thereon, and the other end of column is arranged a bit of I-steel and welds with column
Amplification foot is formed, reinforcing bracket is constituted.5 sets of bracket will be reinforced in afterburner screw 2, afterburner screw 2 passes through in reinforcing bracket 5
Round plate with holes 6 on centre bore；Three-legged support is set, differential chain block is installed on three-legged support, is hung with differential chain block
Centre-hole jack 4 is played, by 4 sets of centre-hole jack in afterburner screw 2, and is withstood in reinforcing 5 head of bracket, punching thousand
4 one end of jin top can be set one piece of billet and cover at it between afterburner screw 2, then tighten tool nut 1, finally
Centre-hole jack 4 connects high-pressure oil pump.
After the completion of above-mentioned work, starting high-pressure oil pump carries out pre- tensioning to soil nailing 8, with 4 pairs of reinforcing spiral shells of centre-hole jack
Bar 2 reinforces, and then applies pulling force to soil nailing 8, after reaching certain value of thrust, oil pump oil return release, and straightening device for prestressing.
Restarting high-pressure oil pump is formally loaded, and after reaching the value of thrust of setting, screw up with a wrench soil nailing end nut 12, i.e.,
Complete the tensioning to soil nailing 8.Last high-pressure oil pump unloads oil return, unloads centre-hole jack 4, afterburner screw of backing off 2.
Fig. 3 is afterburner screw schematic diagram of the present invention；One end of afterburner screw 2 is connected with long nut 3, the other end is connected with work
Has nut 1, one end that long nut 3 is screwed in afterburner screw 2, which can be welded and fixed, to be connected as one, tool nut 1 and afterburner screw 2
It is threadedly engaged connection.
Fig. 4 A, 4B are present invention reinforcing support schematic diagrams；Reinforcing bracket 5 is by round plate 6 with holes and reinforcing bracket supporting leg 7
Weld together and be made, reinforcing bracket 5 is also possible to monolithic construction form.Afterburner screw 2 and soil nailing 8 pass through long spiral shell
Mother 3, one end of long nut 3 can be screwed in one end of afterburner screw 2 and be welded and fixed, and form the reinforcing that one end has long nut 3
Screw rod 2.
Fig. 5 A, 5B, 5C are that soil nailing of the present invention applies prestressed construction procedure schematic diagram；Of the invention applying to soil nailing is pre-
The construction method of stress, comprising the following steps:
S1, the setting construction operation that soil nailing 8 is first completed on the wall of foundation pit supporting project or slope support engineering；It is walked in S1
It sequentially include boring soil nailing hole on the wall of foundation pit supporting project or slope support engineering, soil being set into soil nailing hole in rapid
Nail 8, into the soil nailing hole for be provided with soil nailing 8 slip casting, to spray on the wall of foundation pit supporting project or slope support engineering crater wall mixed
Solidifying soil 10, setting soil nailing bearing structure 11, sprayed on the wall of foundation pit supporting project or slope support engineering facing concrete 9,
End nut 12 is tightened on soil nailing 8；
S2, start soil nailing reinforcing operation, afterburner screw 2 is screwed in the end of soil nailing 8；To be infused in soil nailing hole in S2 step
Slurry reaches 80% progress soil nailing reinforcing operation later of design strength, and afterburner screw 2 is screwed in the end of soil nailing 8；
S3, reinforcing bracket 5 is arranged in soil nailing bearing structure 11, is sleeved in afterburner screw 2；
S4, centre-hole jack 4 is sleeved in afterburner screw 2, one end and reinforcing 5 phase of bracket of centre-hole jack 4
Even, it and covers in afterburner screw 2, is tightened with tool nut 1, centre-hole jack 4 connects high-pressure oil pump；In soil in S4 step
Three-legged support is arranged in the end of nail, and differential chain block is mounted on three-legged support, slings centre-hole jack 4 with differential chain block,
Centre-hole jack 4 is sleeved in afterburner screw 2, and withstands on reinforcing 5 head of bracket；
S5, starting high-pressure oil pump carry out pre- tensioning to soil nailing 8, centre-hole jack 4 to afterburner screw 2 apply drawing force,
And then prestress force is applied to soil nailing 8, high-pressure oil pump oil return release after certain pretension is applied with to soil nailing 8；
S6, restart high-pressure oil pump formal tensioning is carried out to soil nailing 8, soil nailing 8 is applied with after reaching maximum pull and tightens soil
End nut 12 is followed closely, that is, completes to load the prestressing force of soil nailing 8；
S7, then high-pressure oil pump unloads oil return, unloads centre-hole jack 4, afterburner screw of backing off 2；It is i.e. complete after construction operation
At the application prestressing force to soil nailing 8.
Construction method detailed description is carried out by taking a specific construction as an example below, this specific embodiment is with Beijing foundation pit
For, foundation pit depth 9m, soil layer is uniform silty clay.Each index of foundation pit supporting project design is as follows: soil nailing 8 uses HRB335
Reinforcing bar, diameter 22mm, spacing are horizontal 1500mm, and vertical 1500mm, sprayed concrete strength grade is C25, thickness
100mm, steel mesh HPB235, diameter 8mm, spacing 200 × 200.
One, excavation of foundation pit and nail Construction program:
1, first layer soil layer is excavated to 2.0m depth, drilling to projected depth；
2, by soil nailing 8 is put, water filling cement mortar is until fill entire soil nailing hole；
3, crater wall concrete 10 is sprayed to design thickness, that is, 50mm；
4, it is laid with steel mesh, soil nailing bearing structure 11 is set, then sprays facing concrete 9 to design thickness 50mm；
5, soil nailing end nut 12 is tightened in 8 end of soil nailing.
Two, soil nailing stretching construction program:
1, after reach design value to strength of cement mortar in soil nailing hole 80%, afterburner screw 2 is screwed in soil nailing 8 and is pushed up
Portion, soil nailing 8 are the screw rods that diameter is 40mm, long 1000mm；
2, reinforcing bracket 5 is arranged in afterburner screw 2；It is 350mm high to reinforce bracket 5,6 size 250 of round plate with holes ×
250mm, thick 30mm, bracket supporting leg 7 is 320mm long for reinforcing, width 150mm, thickness 20mm；Round plate 6 with holes and reinforcing bracket supporting leg 7 weld
It is connected together and forms reinforcing bracket 5；
3, A-frame is set, differential chain block is mounted on A-frame, slings centre-hole jack with differential chain block
4, by 4 sets of centre-hole jack in afterburner screw 2, and withstand on the round plate with holes 6 of reinforcing bracket 5；
4, it can be set one piece of billet with circular hole between centre-hole jack 4 and round plate with holes 6, size 150 ×
150mm, thickness 20mm, and cover in afterburner screw 2, tool nut 1 make after tightening centre-hole jack 4 and reinforcing bracket 5 it
Between rest firmly against together, centre-hole jack 4 connect high-pressure oil pump；
5, after the completion of above-mentioned work, starting high-pressure oil pump carries out pre- tensioning to soil nailing 8, is reinforced with 4 Duis of centre-hole jack
Screw rod 2 plus drawing force, and then prestressing force is applied to soil nailing 8；Prestressing force is applied to soil nailing 8 and reaches 20kN rear pump or output pump oil return release,
Straightening full set loading device；
6, restarting high-pressure oil pump formally loads, and after reaching 35kN to the application prestressing force of soil nailing 8, screw up with a wrench soil nailing
End nut 12 completes the load to soil nailing 8；
7, then high-pressure oil pump unloads oil return, unloads centre-hole jack 4, afterburner screw of backing off 2；
8, prestressing force is applied with to soil nailing 8 after the completion of above-mentioned operation.
Claims (10)
1. a kind of pair of soil nailing applies prestressed device, which is characterized in that including the long spiral shell with soil nailing (8) coaxial arrangement together
Female (3), reinforcing bracket (5), centre-hole jack (4), afterburner screw (2), tool nut (1), in which:
Soil nailing (8) is connected by long nut (3) with afterburner screw (2), and bracket (5) and the coaxial string of centre-hole jack (4) are reinforced
Connection setting, one end of centre-hole jack (4) and tool nut (1) are in contact, the other end and reinforcing bracket (5) are in contact, and add
One end of power bracket (5) and support engineering are in contact, the other end and centre-hole jack (4) are in contact.
2. afterburner screw as described in claim 1, it is characterised in that: centre-hole jack (4) is connected with high-pressure oil pump, high pressure
Oil pump drives centre-hole jack (4) to apply prestressing force to soil nailing (8).
3. afterburner screw as described in claim 1, it is characterised in that: be threadedly engaged, add between soil nailing (8) and long nut (3)
It is threadedly engaged between power screw rod (2) and long nut (3).
4. afterburner screw as described in claim 1, it is characterised in that: screw thread is matched between afterburner screw (2) and tool nut (1)
It closes.
5. afterburner screw as described in claim 1, it is characterised in that: the diameter of afterburner screw (2) is that 30-60mm, length are
60-120mm。
6. reinforcing bracket as described in claim 1, it is characterised in that: reinforcing bracket (5) includes round plate with holes (6) and reinforcing
Bracket supporting leg (7) is welded, diameter 200-300mm, the thickness 20-30mm of round plate (6) with holes, reinforces bracket supporting leg (7)
High 300-400mm, width 100-150mm, thickness 15-25mm.
7. a kind of pair of soil nailing applies prestressed construction method, which comprises the following steps:
S1, the setting construction operation that soil nailing (8) are first completed on the wall of foundation pit supporting project or slope support engineering；
S2, start soil nailing reinforcing operation, afterburner screw (2) is screwed in the end of soil nailing (8)；
S3, reinforcing bracket (5) is arranged on soil nailing bearing structure (11), is sleeved on afterburner screw (2)；
S4, centre-hole jack (4) is sleeved on afterburner screw (2), one end of centre-hole jack (4) and reinforcing bracket
(5) it is connected, and covers on afterburner screw (2), tightened with tool nut (1), centre-hole jack (4) connects high-pressure oil pump；
S5, starting high-pressure oil pump carry out pre- tensioning to soil nailing (8), and centre-hole jack (4), which applies afterburner screw (2), to be stretched
Power and then prestress force is applied to soil nailing (8), high-pressure oil pump oil return release after certain pretension is applied with to soil nailing (8)；
S6, high-pressure oil pump is restarted to the formal tensioning of soil nailing (8) progress, soil nailing (8) is applied with after reaching maximum pull and tightens soil
It follows closely end nut (12), that is, completes to load the prestressing force of soil nailing (8)；
S7, then high-pressure oil pump unloads oil return, unloads centre-hole jack (4), afterburner screw of backing off (2)；It is i.e. complete after construction operation
At the application prestressing force to soil nailing (8).
8. according to claim 7 apply prestressed construction method to soil nailing, which is characterized in that by first in S1 step
Sequentially include afterwards on the wall of foundation pit supporting project or slope support engineering bore soil nailing hole, into soil nailing hole be arranged soil nailing (8), to
It is provided with slip casting in the soil nailing hole of soil nailing (8), sprays crater wall concrete on the wall of foundation pit supporting project or slope support engineering
(10), soil nailing bearing structure (11) are set, spray facing concrete on the wall of foundation pit supporting project or slope support engineering
(9), it is tightened on soil nailing (8) end nut (12).
9. according to claim 7 apply prestressed construction method to soil nailing, which is characterized in that soil in S2 step
Slip casting reaches design strength in nail hole 80% carries out soil nailing reinforcing operation later, and afterburner screw (2) is screwed in the end of soil nailing (8)
Portion.
10. according to claim 7 apply prestressed construction method to soil nailing, which is characterized in that in S4 step
Three-legged support is arranged in the end of soil nailing, and differential chain block is mounted on three-legged support, slings centre-hole jack with differential chain block
(4), centre-hole jack (4) is sleeved on afterburner screw (2), and withstands on reinforcing bracket (5) head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710678413.9A CN109385996A (en) | 2017-08-10 | 2017-08-10 | A kind of soil nailing applies prestressed device and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710678413.9A CN109385996A (en) | 2017-08-10 | 2017-08-10 | A kind of soil nailing applies prestressed device and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109385996A true CN109385996A (en) | 2019-02-26 |
Family
ID=65415422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710678413.9A Pending CN109385996A (en) | 2017-08-10 | 2017-08-10 | A kind of soil nailing applies prestressed device and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109385996A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653073A (en) * | 2021-07-21 | 2021-11-16 | 瑞腾基础工程技术（北京）股份有限公司 | Soil nail resistance to plucking fastening structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08151675A (en) * | 1994-11-28 | 1996-06-11 | Mizutani Kensetsu Kogyo Kk | Oblique prestressed box culvert and its prestress introducing method |
| CN204626397U (en) * | 2015-03-23 | 2015-09-09 | 大连理工大学 | Bearing structure under anchor in prestressed anchor flexible support system |
| CN105464110A (en) * | 2015-12-09 | 2016-04-06 | 西南交通大学 | Construction technology of basalt fiber reinforced material anchor rods |
| CN205934915U (en) * | 2016-05-27 | 2017-02-08 | 昆明军龙岩土工程有限公司 | Staple bolt tensioning equipment of crude steel muscle stock |
| CN207244618U (en) * | 2017-08-10 | 2018-04-17 | 大连理工大学 | A kind of soil nailing applies prestressed device |
-
2017
- 2017-08-10 CN CN201710678413.9A patent/CN109385996A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08151675A (en) * | 1994-11-28 | 1996-06-11 | Mizutani Kensetsu Kogyo Kk | Oblique prestressed box culvert and its prestress introducing method |
| CN204626397U (en) * | 2015-03-23 | 2015-09-09 | 大连理工大学 | Bearing structure under anchor in prestressed anchor flexible support system |
| CN105464110A (en) * | 2015-12-09 | 2016-04-06 | 西南交通大学 | Construction technology of basalt fiber reinforced material anchor rods |
| CN205934915U (en) * | 2016-05-27 | 2017-02-08 | 昆明军龙岩土工程有限公司 | Staple bolt tensioning equipment of crude steel muscle stock |
| CN207244618U (en) * | 2017-08-10 | 2018-04-17 | 大连理工大学 | A kind of soil nailing applies prestressed device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653073A (en) * | 2021-07-21 | 2021-11-16 | 瑞腾基础工程技术（北京）股份有限公司 | Soil nail resistance to plucking fastening structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102937030B (en) | Bolting-grouting integrated support method for zonal disintegration of deep roadway surrounding rock | |
| KR101410471B1 (en) | Method for buttom-up removal of underground retaining wall by using h-piles remained in earth retaining work of existed building | |
| CN102042019A (en) | Two-stair five-step excavation construction method for shallow-buried large-span soft plastic clay tunnel | |
| CN106640126B (en) | A kind of processing method that highly stress soft rock stress tunnel arch wall Lining cracks destroy | |
| WO2021179508A1 (en) | Method for treating tunnel collapse by using roof-contacted shield plate support | |
| CN110259184A (en) | Column construction method is pulled out based on Removing Columns combined support jack-up system | |
| US20220098819A1 (en) | Method for strengthening and lifting high-rise building having raft foundation | |
| CN207244618U (en) | A kind of soil nailing applies prestressed device | |
| CN106894826B (en) | Supporting structure and supporting method for collapse section in hole | |
| CN104989434A (en) | Method for treating landslide of tunneling working face with pipe penetration combined lagging jacks | |
| CN204060020U (en) | A kind of Reinforced Concrete Reinforcement structure | |
| CN102605783A (en) | Construction method for applying prestress to anchor jacked piles | |
| CN204626396U (en) | A kind of foundation ditch composite soil nailed wall | |
| CN104295112B (en) | A kind of reinforced concrete post connects steel core concrete column syndeton and construction method | |
| CN206599785U (en) | A kind of campshed anchor draws cement earth pile diaphragm wall supporting construction | |
| CN206220978U (en) | Vcehicular tunnel first lined steel bow member supporting construction integrated with prestressed anchor | |
| CN109385996A (en) | A kind of soil nailing applies prestressed device and construction method | |
| KR101086643B1 (en) | Prestressed concrete girder with plural steel wires disposed at shear surface of tension port | |
| RU2631061C1 (en) | Method for construction of prefabricated-solid support of shaft of mining enterprise and device for its implementation | |
| CN104806031B (en) | Timber structure reinforced construction method | |
| CN105113492A (en) | Construction method of composite pile applicable to cohesive soil, sandy soil and muddy soil foundations | |
| CN204174955U (en) | Reinforced concrete post connects steel core concrete column syndeton | |
| CN216713138U (en) | Building reinforcement is rectified and is traded and prop device | |
| CN109555129A (en) | One kind is quickly met an urgent need diagonal brace and construction method for salvage of foundation pits | |
| CN114086982A (en) | High ground stress fragmentation surrounding rock deformation construction control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190226 |