CN208136918U - A kind of tubular type Soil-Nailing Wall Structure - Google Patents
A kind of tubular type Soil-Nailing Wall Structure Download PDFInfo
- Publication number
- CN208136918U CN208136918U CN201820293469.2U CN201820293469U CN208136918U CN 208136918 U CN208136918 U CN 208136918U CN 201820293469 U CN201820293469 U CN 201820293469U CN 208136918 U CN208136918 U CN 208136918U
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- flower
- soil
- slip casting
- open end
- 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 relates to a kind of tubular type Soil-Nailing Wall Structures.Tubular type Soil-Nailing Wall Structure includes flower steel pipe, and flower steel pipe one end is taper bit, and another end opening is equipped with screw thread, and flower steel pipe tube surfaces are equipped with slurry outlet, and tube body is equipped with spiral steel rib, and spiral steel rib is close to taper bit；When slip casing by pressure, slip casting casing one end is connect with flower steel pipe open end, and the other end is flexible coupling with slip casting；After the completion of slip casting, casing is removed, anchor structure is installed in flower steel pipe open end, and flower steel pipe is arranged as quincunx in concrete topping.The utility model steel pipe directly squeezes into the soil body, avoids bored grouting when soft soft clay area is constructed, the problems such as collapse hole, burying and necking down occurs.The soil body is entered using mechanical rotary drilling, reduces steel pipe and buries the loss of difficulty, steel pipe during burying, accelerate construction progress；Spiral steel rib makes that the steel pipe periphery soil body is spent to become loose, and in slip casing by pressure, slurry and the soil body composite consolidation body of formation are relatively large in diameter, and improves pulling capacity of soil nail power.
Description
Technical field
The utility model belongs to geotechnical engineering field, and in particular to a kind of tubular type Soil-Nailing Wall Structure.
Background technique
In the geotechnical anchor engineerings such as foundation pit, side slope, soil nailing is very widely used.Traditional soil nailing generally uses reinforcing bar native
Nail, the work progress of reinforcing bar soil nailing need preparatory machine drilling, are to prevent collapse hole phenomenon to be inserted into reinforcing bar as early as possible after pore-forming
The body of rod, while reinforcing bar needs that certain measure is taken to be located at hole center, and reinforcing bar is made to play a role completely, soil nailing insertion
Afterwards, injection mortar makes soil nailing and soil body build-in.In the softer area of some soil properties, for example, backfill, soft muck soil,
Liquefiable sandy soil etc., this plate brad supporting form, are generally difficult to form stable drilling, easily collapse during machine drilling
The problems such as hole, burying and necking down.Existing tubular type soil nailing easily causes steel pipe during squeezing into and ramming using mechanically mode is squeezed into
Position damage is squeezed into, while whether the soil body for being formed by mortar reinforcing is uniformly difficult to ensure that soil nailing intensity is difficult to ensure.
Utility model content
The utility model provides a kind of novel Soil-Nailing Wall Structure that the steel pipe grouting soil body is formed.Using novel
Spiral steel rib spends steel pipe, convenient for steel pipe is screwed in the soil body using mechanical system, reduces that steel pipe buries difficulty and steel pipe was burying
Loss in journey；In addition, spiral steel rib can make the steel pipe periphery soil body loose during piercing, it is convenient for slip casting, slip casing by pressure
Afterwards along the linear soil stabilization area that soil-nail parameter is formed, improves the mechanical property of weak soil body, improve the shearing strength of the soil body.Separately
On the one hand, the huge steel pipe and slurry calculus column shearing strength with higher that mortar and tubulose are formed, when soil mass of foundation pit glides,
The positive effect of said two devices improves the stability and safety of foundation pit.
Technical solutions of the utility model are as follows：
A kind of tubular type Soil-Nailing Wall Structure, including flower steel pipe, anchor structure, gunite concrete surface layer and slip casting casing；Institute
Stating anchor structure includes hold-doun nut and billet；Described colored steel pipe one end is cone-shaped end, and the other end is open end, open end
Equipped with screw thread, flower steel pipe tube surfaces are equipped with slurry outlet, and spiral steel rib is welded on flower steel pipe tube wall, described spiral
Steel rib is close to tapered end；Slurry is first filled by hose in flower steel pipe, hose opens slip casting sleeve one end and flower steel pipe after taking out
The connection of mouth end, the other end connect slip casting hose, and with cement slurry high-pressure pump slip casing by pressure, mortar penetrates into the soil body of periphery, play and add
Gu the effect of the soil body；After the completion of slip casing by pressure, slip casting casing is removed, flower steel pipe open end installation billet and hold-doun nut,
Described to determine nut and the screw thread of steel pipe open end is spent to match, the colored steel pipe uses quincunx arrangement cloth on concrete topping
It sets, horizontal space and vertical spacing are 0.8-1.5m.
The concrete topping is made of elongated longitudinal reinforcement, elongated transverse steel, steel mesh and gunite concrete, injection
With a thickness of 80-120mm.
The slurry outlet takes quincunx or spiral arrangement, and pulp bore dia is 5-10mm, spacing 0.2-0.5m.It keeps away
It is larger to exempt from strength reduction at the same section of steel pipe.
Slip casting casing one end is fixed with colored steel pipe open end by screwed connection, and the other end is consolidated with soft connect by steel wire of slip casting
It is fixed.
The colored steel pipe is anchored in gunite concrete surface layer, the billet as Force transmission parts under anchor, having a size of 0.3 ×
0.3m, thick 10-15mm, there are the circular holes with steel pipe same diameter at center.
The spiral steel rib height is 30-50mm, rib width 3-5mm, spacing 100mm, arrangement length about 0.5-
1.0m；The screw thread arrangement length of the open end is 50-100mm.
The utility model also provides a kind of construction method of tubular type Soil-Nailing Wall Structure, includes the following steps：
1) it determines and excavates position, carry out slope by design, cut the earth to first of soil nailing absolute altitude depth, clear up slope surface, reserve
Flower steel pipe hole location simultaneously makes label, and nation wire-ties net, gunite concrete, formation gunite concrete surface layer；
2) reach prescribed strength to concrete topping intensity, flower steel pipe mechanical is rotatably pierced into the soil body；
3) sealing of hole around flower steel pipe open end, during avoiding slip casing by pressure, mortar sprays around flower steel pipe open end
Out；
4) steel pipe bottom is deeply first spent using the slip casting hose of minor diameter, gradually will fills slurry in flower steel pipe from inside to outside
Body takes out slip casting hose；Slip casting sleeve one end is connect with flower steel pipe open end, the other end connects slip casting hose, uses cement slurry
High-pressure pump slip casing by pressure, grouting pressure 1-2MPa, pressure stabilizing 5 minutes, mortar penetrated into the soil body of periphery, played the work of soil mass consolidation
With；
5) after the completion of slip casting, slip casting sleeve is removed, billet is installed in flower steel pipe open end, will be fixed using mechanical equipment
Nut is tightened onto the screw thread of colored steel pipe open end, to provide small pre-stress；
6) after the soil nailing wait construct reaches 70% design strength, it can cut the earth to lower one of soil nailing absolute altitude depth, carry out
The construction of lower one of soil nailing.
The utility model beneficial effect outstanding is：
(1) the utility model is highly reliable, and using steel pipe type soil nailing, steel pipe rotary pierces the soil body, avoids in some pines
When soft soft clay area is constructed, easily there are the construction problems such as collapse hole, burying and necking down；
(2) steel pipe end position of burying is constructed using spiral steel rib, reduces that steel pipe buries difficulty and steel pipe was burying
Loss in journey can accelerate construction progress；End anchorage power is improved in soil-nailed structure after shaping simultaneously, prevents concrete
There is break-off with steel pipe；
(3) pulling capacity of soil nail power is high.For flower steel pipe in drilling process, the flower steel pipe periphery soil body that spiral steel rib makes becomes thin
Pine, in slip casing by pressure, mortar penetrates into soil nailing surrounding soil, and slurry and the soil body composite consolidation body of formation are relatively large in diameter, and improves
Pulling capacity of soil nail power；
(4) Supporting Structure deformation is small.Matching for port of steel pipe screw thread and hold-doun nut and billet, can be soil nailing
Small pre-stress is provided, to reduce Supporting Structure deformation；
(5) improve the mechanical property of weak soil body along the linear soil stabilization area that soil-nail parameter is formed after slip casing by pressure, improve
The shearing strength of the soil body.On the other hand, the huge steel pipe and the shearing resistance with higher of slurry calculus column that mortar and tubulose are formed
Intensity, when soil mass of foundation pit glides, the positive effect of said two devices improves the stability and safety of foundation pit.
(6) practical, it can be widely applied to backfill, soft muck soil, the soil properties such as liquefiable sandy soil are softly
Area.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model flower steel pipe and slip casting sleeve；
Fig. 2 is the overall structure floor map after the completion of the utility model tubular type plate brad supporting；
Fig. 3 is the overall structure elevational schematic view after the completion of the utility model tubular type plate brad supporting；
Fig. 4 is that position of each structure of the utility model on earth-retaining face arranges schematic diagram.
Label and symbol description
1- hold-doun nut；2- billet；3 gunite concrete surface layers；The spiral steel rib of 4-；5- cone-shaped end；6- spends steel pipe；
7- ground surface；8- cheats bottom；9- slurry outlet；10- slip casting sleeve；The elongated longitudinal reinforcement of 11-；The elongated transverse steel of 12-；13- reinforcing bar
Net；14- bottom of foundation ditch；15- ground surface.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and detailed description.
Embodiment 1
As shown in Figs 1-4, a kind of tubular type Soil-Nailing Wall Structure includes flower steel pipe 6, anchor structure, gunite concrete surface layer 3
With slip casting casing 10；The anchor structure includes hold-doun nut 1 and billet 2；Described 6 one end of colored steel pipe is cone-shaped end 5, separately
One end is open end, and open end is equipped with screw thread, and flower 6 tube surfaces of steel pipe are equipped with slurry outlet 9, weld on flower 6 tube wall of steel pipe
There is a spiral steel rib 4, the spiral steel rib 4 is close to cone-shaped end 5；Hose, which is first passed through, in flower steel pipe 6 fills slurry；Hose takes
10 one end of slip casting sleeve is connect with flower 6 open end of steel pipe after out, the other end connects slip casting hose, carries out slip casing by pressure (slurry
The soil body is penetrated into from the hole on tube body)；After the completion of slip casing by pressure, slip casting casing 10 is removed, billet is installed in flower 6 open end of steel pipe
2 and hold-doun nut 1, the screw thread of the hold-doun nut 1 and flower 6 open end of steel pipe matches, and the colored steel pipe 6 is in concrete topping
Quincunx arranged is used on 3, horizontal space and vertical spacing are 0.8-1.5m.The concrete topping 3 is by elongated longitudinal direction
Reinforcing bar 11, elongated transverse steel 12, steel mesh 13 and gunite concrete composition, jet thickness 80-120mm.The slurry outlet 9
Quincunx or spiral arrangement are taken, 9 diameter of slurry outlet is 5-10mm, spacing 0.2-0.5m.The colored steel pipe 6 is anchored in spray
Penetrate concrete topping 3, the billet 2 is as Force transmission parts under anchor, having a size of 0.3 × 0.3m, thick 10-15mm, center there are
With the circular hole of steel pipe same diameter.Spiral 6 height of steel rib is 30-50mm, rib width 3-5mm, spacing 100mm, cloth
Set length about 0.5-1.0m；The screw thread arrangement length of the open end is 50-100mm.
The smooth bar pipe production of φ 40mm, φ 50mm, φ 60mm thickness 3mm, flower steel pipe 6 and mating can be used in flower steel pipe 6
Hold-doun nut 1 and billet 2 is unified is made by factory process.
A kind of construction procedure of tubular type plate brad supporting is as follows：
1) earth excavation
It is carried out by the sequence of construction of design code, it is necessary to construct by stage excavation depth.Earthwork excavation depth of each step and soil
Staple height holding one is to foundation pit side wall should reserve the soil of 0.3-0.5m, and small machine or spade is preferably used to carry out artificial cut the earth clearly
Slope, to guarantee Slope leveling.
2) gunite concrete surface construction
When to guarantee slip casing by pressure, the grouting port side soil body being closed, preventing excavation face from spillage, whitewashing phenomenon occur,
Concrete topping construction should be first carried out, before gunite concrete, need to first determine and reserve steel pipe hole location, is squeezed into flower steel pipe 6
Elongated longitudinally connected muscle 11 is arranged at position to weld with elongated lateral connection muscle 12, as billet lower stress component.Steel is pricked by nation
Muscle net 13, the reinforced mesh in surface layer should be fixedly secured in side wall, to meet the requirement of regulation protective layer thickness.Spray coagulation
Soil forms gunite concrete surface layer 3；Sprayed concrete strength is C20, and maximum size of coarse aggregate is not preferably greater than 12mm, the ratio of mud
It is not preferably greater than 0.5.Gunite concrete should be segmented progress, and from top to down, successively injection is thick for same segmentation inner concrete injection order
Degree is not preferably less than 40mm.When gunite concrete, spray head should keep vertical with by spray plane, distance preferably 0.8-1.2m.Spray coagulation
Soil thickness is 80-120mm.After gunite concrete final set 2h, wet curing is answered, reaches the 70% of design strength to concrete strength
Afterwards, next step construction can be carried out, supporting construction sectional view is as shown in Figure 3；
3) flower steel pipe construction
Flower steel pipe waits for that 3 intensity of concrete topping reaches prescribed strength, and flower 6 machinery rotating type of steel pipe is pierced the soil body；4) it seals
Hole
The sealing of hole around flower 6 open end of steel pipe, during avoiding slip casing by pressure, mortar sprays around flower 6 open end of steel pipe
Out；
5) slip casting
Steel pipe bottom is deeply first spent using the slip casting hose of minor diameter, gradually will fill slurry in flower steel pipe from inside to outside,
Take out slip casting hose；Slip casting sleeve one end is connect with flower steel pipe open end, the other end connects slip casting hose, with cement slurry high pressure
Pump pressure slip casting, grouting pressure 1-2MPa, pressure stabilizing 5 minutes, mortar penetrated into the soil body of periphery, played the role of soil mass consolidation；
6) anchor structure is installed
After the completion of slip casting, slip casting sleeve 10 is removed, billet 2 is installed in flower 6 open end of steel pipe, will be consolidated using mechanical equipment
The screw thread that nut 1 is tightened onto colored 6 open end of steel pipe is determined, to provide small pre-stress.
7) after the soil nailing wait construct reaches 70% design strength, it can cut the earth to lower one of soil nailing absolute altitude depth, carry out
The construction of lower one of soil nailing.
Claims (6)
1. a kind of tubular type Soil-Nailing Wall Structure, which is characterized in that including flower steel pipe (6), anchor structure, gunite concrete surface layer
(3) and slip casting sleeve (10)；The anchor structure includes hold-doun nut (1) and billet (2)；Described colored steel pipe (6) one end is
Cone-shaped end (5), the other end are open end, and open end is equipped with screw thread, and flower steel pipe (6) tube surfaces are equipped with slurry outlet (9), Hua Gang
Spiral steel rib (4) is welded on pipe (6) tube wall, and the spiral steel rib (4) is close to cone-shaped end (5)；Flower steel pipe (6)
Slurry is first filled by slip casting hose, slip casting sleeve (10) one end is connect with flower steel pipe (6) open end, the other end connects slip casting
Hose carries out slip casing by pressure；After the completion of slip casing by pressure, slip casting sleeve (10) is removed, billet is installed in flower steel pipe (6) open end
(2) and hold-doun nut (1), the screw thread of the hold-doun nut (1) and flower steel pipe (6) open end matches, and the colored steel pipe (6) exists
Quincunx arrangement cloth is used on concrete topping (3), horizontal space and vertical spacing are 0.8-1.5m.
2. a kind of tubular type Soil-Nailing Wall Structure as described in claim 1, which is characterized in that the concrete topping (3) is by leading to
Long longitudinal reinforcement (11), elongated transverse steel (12), steel mesh (13) and gunite concrete composition, jet thickness 80-
120mm。
3. a kind of tubular type Soil-Nailing Wall Structure as described in claim 1, which is characterized in that the slurry outlet (9) takes plum blossom
Formula or spiral arrangement, slurry outlet (9) diameter are 5-10mm, spacing 0.2-0.5m.
4. a kind of tubular type Soil-Nailing Wall Structure as described in claim 1, which is characterized in that slip casting sleeve (10) one end and flower steel
Pipe (6) open end is fixed by screwed connection, and the other end is connected and fixed with slip casting hose by steel wire.
5. a kind of tubular type soil nailing as described in claim 1, which is characterized in that the colored steel pipe (6) is anchored in gunite concrete
Surface layer (3), the billet (2) be used as anchor under Force transmission parts, having a size of 0.3 × 0.3m, thick 10-15mm, center there are and flower
The circular hole of steel pipe (6) same diameter.
6. a kind of tubular type Soil-Nailing Wall Structure as described in claim 1, which is characterized in that spiral steel rib (4) height
For 30-50mm, rib width 3-5mm, spacing 100mm, arrangement length 0.5-1.0m；The screw thread arrangement length of the open end
For 50-100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820293469.2U CN208136918U (en) | 2018-03-02 | 2018-03-02 | A kind of tubular type Soil-Nailing Wall Structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820293469.2U CN208136918U (en) | 2018-03-02 | 2018-03-02 | A kind of tubular type Soil-Nailing Wall Structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208136918U true CN208136918U (en) | 2018-11-23 |
Family
ID=64288152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820293469.2U Active CN208136918U (en) | 2018-03-02 | 2018-03-02 | A kind of tubular type Soil-Nailing Wall Structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208136918U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222022A (en) * | 2018-03-02 | 2018-06-29 | 大连理工大学 | A kind of tubular type Soil-Nailing Wall Structure and its construction method |
| CN110005872A (en) * | 2019-04-23 | 2019-07-12 | 河海大学 | A kind of integral pipe and its operating method transported with slip casting |
| CN110067253A (en) * | 2019-06-05 | 2019-07-30 | 招商局重庆交通科研设计院有限公司 | From anchoring miniature steel pipe anchoring pile |
| CN114197496A (en) * | 2021-12-16 | 2022-03-18 | 山东大学 | Slope reinforcing device of railway roadbed and construction method |
-
2018
- 2018-03-02 CN CN201820293469.2U patent/CN208136918U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222022A (en) * | 2018-03-02 | 2018-06-29 | 大连理工大学 | A kind of tubular type Soil-Nailing Wall Structure and its construction method |
| CN110005872A (en) * | 2019-04-23 | 2019-07-12 | 河海大学 | A kind of integral pipe and its operating method transported with slip casting |
| CN110005872B (en) * | 2019-04-23 | 2021-01-05 | 河海大学 | Transportation and grouting integrated pipeline and operation method thereof |
| CN110067253A (en) * | 2019-06-05 | 2019-07-30 | 招商局重庆交通科研设计院有限公司 | From anchoring miniature steel pipe anchoring pile |
| CN114197496A (en) * | 2021-12-16 | 2022-03-18 | 山东大学 | Slope reinforcing device of railway roadbed and construction method |
| CN114197496B (en) * | 2021-12-16 | 2023-03-10 | 山东大学 | Side slope reinforcing device of railway roadbed and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208136918U (en) | A kind of tubular type Soil-Nailing Wall Structure | |
| CN101929340B (en) | Coal mine underground flat inclined tunnel pipe shed pre-grouting advance support construction process | |
| CN107060774B (en) | A kind of anti-tunnel portal wall damage device and construction method | |
| CN101748741B (en) | Construction method of concrete supporting structure | |
| CN101761074B (en) | Method for improving bearing capacity and tensile capacity of tubular pile end | |
| CN109487804B (en) | Low-disturbance reinforcement protection system for red-layer soft rock cutting slope and construction method | |
| CN104818991A (en) | Construction method of residual slope wash tunnel with shallow cover and unsymmetrical pressure | |
| CN104499479A (en) | Dig-hole pile construction method based on penetration of sand gravel backfilling layer | |
| CN109930609A (en) | A kind of campshed composite supporting construction and its construction method for upper-soft lower-hard ground | |
| CN106761814A (en) | A kind of pipe curtain and bamboo reinforcement grouted anchor bar combined retaining structure and method | |
| CN104963351A (en) | Reinforced structure for reinforcing treatment of artificial filled soil slopes and construction method thereof | |
| CN108222022A (en) | A kind of tubular type Soil-Nailing Wall Structure and its construction method | |
| CN108316297A (en) | A kind of tubular type soil nailing and its construction method | |
| CN111058443A (en) | Precast pile composite foundation construction method for eliminating loess collapsibility | |
| CN102704497B (en) | RPW (ranked position weight) process for treating high fill slope | |
| CN109209443A (en) | A kind of construction method of breaking surrounding rock tunnel structure | |
| CN111364449A (en) | Construction method and structure for penetrating karst cave of precast tubular pile | |
| CN110424971A (en) | The method for handling jacked piles with small section landslide | |
| CN114412475A (en) | Reverse tunnel exit construction method for shallow-buried broken surrounding rock | |
| CN208136912U (en) | A kind of small pre-stress pipe muscle formula soil nailing | |
| CN212052717U (en) | Structure for penetrating karst cave of precast tubular pile | |
| KR101488721B1 (en) | Construction method for extending bulb of the ground anchor by post grouting and bulb extending apparatus being used for the same | |
| CN206916733U (en) | The diaphram wall reserved grouting tubular construction of steel reinforcement cage | |
| CN201296932Y (en) | Segmentation prefabricating sunken outer wall and guide wall thereof | |
| CN202787275U (en) | Tubular soil nailing wall of novel pneumatic impact anchor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |