CN108222022A - A kind of tubular type Soil-Nailing Wall Structure and its construction method - Google Patents
A kind of tubular type Soil-Nailing Wall Structure and its construction method Download PDFInfo
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- CN108222022A CN108222022A CN201810174149.XA CN201810174149A CN108222022A CN 108222022 A CN108222022 A CN 108222022A CN 201810174149 A CN201810174149 A CN 201810174149A CN 108222022 A CN108222022 A CN 108222022A
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- steel pipe
- soil
- flower
- slip casting
- openend
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 120
- 239000010959 steel Substances 0.000 claims abstract description 120
- 239000002689 soil Substances 0.000 claims abstract description 70
- 238000007569 slipcasting Methods 0.000 claims abstract description 43
- 239000004567 concrete Substances 0.000 claims abstract description 34
- 239000002002 slurry Substances 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000007596 consolidation process Methods 0.000 claims abstract description 5
- 239000011378 shotcrete Substances 0.000 claims description 20
- 239000004570 mortar (masonry) Substances 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 7
- 230000002787 reinforcement Effects 0.000 claims description 6
- 239000011083 cement mortar Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000004927 clay Substances 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000009412 basement excavation Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 241000209202 Bromus secalinus Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- E02D5/80—Ground anchors
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of tubular type Soil-Nailing Wall Structure and its construction methods.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；During slip casing by pressure, slip casting casing one end is connect with flower steel pipe openend, and the other end is flexible coupling with slip casting；After the completion of slip casting, casing is removed, flower steel pipe openend installation anchor structure, flower steel pipe is arranged as quincunx in concrete topping.Steel pipe of the present invention directly squeezes into the soil body, avoids bored grouting in soft soft clay area construction, 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 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 invention belongs to geotechnical engineering fields, and in particular to a kind of tubular type Soil-Nailing Wall Structure and its construction method.
Background technology
In the geotechnical anchor engineerings such as foundation pit, side slope, being widely used for soil nailing is general.Traditional soil nailing is generally using reinforcing bar soil
Nail, the work progress of reinforcing bar soil nailing needs advance machine drilling, is 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 is inserted into
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 in the process using mechanically mode is squeezed into, squeezing into ram
Position damage is squeezed into, while whether the soil body that the mortar formed is reinforced uniformly is difficult to ensure that soil nailing intensity is difficult to ensure that.
Invention content
The present invention provide the present invention provide a kind of novel Soil-Nailing Wall Structure that the steel pipe grouting soil body formed and
Its construction method.Steel pipe is spent using Novel spiral steel rib, convenient for steel pipe is screwed in the soil body using mechanical system, reduces steel pipe and buries
The loss of difficulty and steel pipe during burying；In addition, spiral steel rib can make the steel pipe periphery soil body loose during piercing,
Convenient for slip casting, the linear soil stabilization area formed after slip casing by pressure along soil-nail parameter improves the mechanical property of weak soil body, improves
The shearing strength of the soil body.On the other hand, the huge steel pipe that mortar and tubulose are formed and slurry calculus column are strong with higher shearing resistance
Degree, when soil mass of foundation pit glides, the positive effect of said two devices improves stability and the safety of foundation pit.Technical solution of the present invention
It is as follows：
A kind of tubular type Soil-Nailing Wall Structure, including flower steel pipe, anchor structure, gunite concrete face layer and slip casting casing；Institute
It states anchor structure and includes hold-doun nut and billet；Described colored steel pipe one end is cone-shaped end, and the other end is openend, openend
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 tapering point；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, other end connection slip casting hose, with cement mortar high-pressure pump slip casing by pressure, mortar is penetrated into the soil body of periphery, is played and is added
Gu the effect of the soil body；After the completion of slip casing by pressure, slip casting casing is removed, flower steel pipe openend installation billet and hold-doun nut,
The hold-doun nut and the screw thread of flower steel pipe openend match, and the colored steel pipe uses quincunx arrangement on concrete topping
Arrangement, level interval and vertical spacing are 0.8-1.5m.
The concrete topping is made of elongated longitudinal reinforcement, elongated transverse steel, bar-mat reinforcement and gunite concrete, injection
Thickness is 80-120mm.
The slurry outlet takes quincunx or spiral arrangement, slurry outlet a diameter of 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 openend 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 be anchored in gunite concrete face layer, the billet be used as Force transmission parts under anchor, size be 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 openend is 50-100mm.
The present invention also provides a kind of construction methods of tubular type Soil-Nailing Wall Structure, include the following steps：
1) it determines to excavate position, slope is carried out by design, cut the earth to first of soil nailing absolute altitude depth, clear up slope surface, reserve
Label is simultaneously made in flower steel pipe hole position, and nation wire-ties net, and gunite concrete forms gunite concrete face layer；
2) it treats that concrete topping intensity reaches prescribed strength, flower steel pipe mechanical is rotatably pierced into the soil body；
3) sealing of hole around flower steel pipe openend, during avoiding slip casing by pressure, mortar sprays around flower steel pipe openend
Go 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 openend, other end connection slip casting hose uses cement mortar
High-pressure pump slip casing by pressure, grouting pressure 1-2MPa, voltage stabilizing 5 minutes, mortar are penetrated into the soil body of periphery, play the work of soil mass consolidation
With；
5) after the completion of slip casting, slip casting sleeve is removed, it, will be fixed using mechanical equipment in flower steel pipe openend installation billet
Nut is tightened onto the screw thread of colored steel pipe openend, to provide small pre-stress；
6) after the soil nailing constructed 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 prominent advantageous effect of the present invention is：
(1) present invention is highly reliable, and using steel pipe type soil nailing, steel pipe rotary pierces the soil body, avoids soft at some
When 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 is penetrated into soil nailing surrounding soil, and slurry and the soil body composite consolidation body of formation are relatively large in diameter, and is improved
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) the linear soil stabilization area formed after slip casing by pressure along soil-nail parameter improves the mechanical property of weak soil body, improves
The shearing strength of the soil body.On the other hand, the huge steel pipe that mortar and tubulose are formed has higher shearing resistance with slurry calculus column
Intensity, when soil mass of foundation pit glides, the positive effect of said two devices improves stability and the safety of foundation pit.
(6) it is highly practical, it can be widely applied to the soil properties such as backfill, soft muck soil, liquefiable sandy soil softly
Area.
Description of the drawings
Fig. 1 is the schematic diagram of present invention flower steel pipe and slip casting sleeve；
Fig. 2 is the overall structure floor map after the completion of tubular type plate brad supporting of the present invention；
Fig. 3 is the overall structure elevational schematic view after the completion of tubular type plate brad supporting of the present invention；
Fig. 4 is that position of each structure of the present invention on earth-retaining face arranges schematic diagram.
Label and symbol description
1- hold-doun nuts；2- billets；3 gunite concrete faces layer；The spiral steel ribs of 4-；5- cone-shaped ends；6- spends steel pipe；
7- ground surfaces；8- cheats bottom；9- slurry outlets；10- slip casting sleeves；The elongated longitudinal reinforcements of 11-；The elongated transverse steels of 12-；13- reinforcing bars
Net；14- bottom of foundation ditch；15- ground surfaces.
Specific embodiment
The present invention will be further described 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 face 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 openend, and openend is equipped with screw thread, and 6 tube surfaces of flower steel pipe are equipped with slurry outlet 9, are welded 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 6 openend of flower steel pipe after going out, other end connection 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, 6 openend of flower steel pipe installation billet
2 and hold-doun nut 1, the screw thread of 6 openend of the hold-doun nut 1 and flower steel pipe matches, and the colored steel pipe 6 is in concrete topping
Using quincunx arranged on 3, level interval and vertical spacing are 0.8-1.5m.The concrete topping 3 is by elongated longitudinal direction
Reinforcing bar 11, elongated transverse steel 12, bar-mat reinforcement 13 and gunite concrete composition, jet thickness 80-120mm.The slurry outlet 9
Take quincunx or spiral arrangement, slurry outlet 9 a diameter of 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, and size is 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
Put length about 0.5-1.0m；The screw thread arrangement length of the openend is 50-100mm.
Flower steel pipe 6 can be used φ 40mm, φ 50mm, φ 60mm thickness 3mm smooth bar pipe make, flower steel pipe 6 and mating
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 keeps one to foundation pit side wall should reserve the soil of 0.3-0.5m, preferably carry out artificial cut the earth clearly using small machine or spade
Slope, to ensure Slope leveling.
2) gunite concrete surface construction
During to ensure 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 position, be squeezed into flower steel pipe 6
Elongated longitudinally connected muscle 11 is set to be welded with elongated lateral connection muscle 12 at position, as billet lower stress component.Steel is pricked by nation
Muscle net 13, face layer in reinforced mesh should be fixedly secured in side wall, to meet the requirement of regulation protective layer thickness.Spray coagulation
Soil forms gunite concrete face 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, injection is thick successively for same segmentation inner concrete injection order
Degree is not preferably less than 40mm.During gunite concrete, nozzle 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, treats that concrete strength reaches the 70% of design 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 treats that 3 intensity of concrete topping reaches prescribed strength, and flower 6 machinery rotating type of steel pipe is pierced the soil body；
4) sealing of hole
The sealing of hole around 6 openend of flower steel pipe, during avoiding slip casing by pressure, mortar sprays around 6 openend of flower steel pipe
Go 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 openend, other end connection slip casting hose, with cement mortar high pressure
Pump pressure slip casting, grouting pressure 1-2MPa, voltage stabilizing 5 minutes, mortar are penetrated into the soil body of periphery, play the role of soil mass consolidation；
6) anchor structure is installed
After the completion of slip casting, slip casting sleeve 10 is removed, it, will be solid using mechanical equipment in 6 openend of flower steel pipe installation billet 2
The screw thread that nut 1 is tightened onto colored 6 openend of steel pipe is determined, to provide small pre-stress.
7) after the soil nailing constructed 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 (7)
1. a kind of tubular type Soil-Nailing Wall Structure, which is characterized in that including flower steel pipe (6), anchor structure, gunite concrete face layer
(3) and slip casting casing (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 openend, and openend 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) openend, other end connection slip casting
Hose carries out slip casing by pressure；After the completion of slip casing by pressure, slip casting casing (10) is removed, flower steel pipe (6) openend installation billet
(2) and hold-doun nut (1), the screw thread of the hold-doun nut (1) and flower steel pipe (6) openend matches, and the colored steel pipe (6) exists
Using quincunx arrangement cloth on concrete topping (3), level interval 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), bar-mat reinforcement (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) a diameter of 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 casing (10) one end and flower steel
Pipe (6) openend is fixed by screwed connection, and the other end connect fixation 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
Face layer (3), the billet (2) is as Force transmission parts under anchor, and size is 0.3 × 0.3m, thick 10-15mm, center there are and flower
The circular hole of steel pipe (6) same diameter.
A kind of 6. tubular type Soil-Nailing Wall Structure as described in claim 1, which is characterized in that spiral steel rib (6) height
For 30-50mm, rib width 3-5mm, spacing 100mm, arrangement length 0.5-1.0m；The screw thread arrangement length of the openend
For 50-100mm.
7. the construction method of tubular type Soil-Nailing Wall Structure as described in claim 1, which is characterized in that include the following steps：
1) it determines to excavate position, slope is carried out by design, cut the earth to first of soil nailing absolute altitude depth, clear up slope surface, reserve flower steel
Label is simultaneously made in pore position, and nation wire-ties net, gunite concrete, forms gunite concrete face layer (3)；
2) it treats that concrete topping (3) intensity reaches prescribed strength, flower steel pipe (6) machinery rotating type is pierced into the soil body；
3) sealing of hole around flower steel pipe (6) openend, during avoiding slip casing by pressure, mortar sprays around openend；
4) steel pipe bottom is deeply first spent using slip casting hose, gradually will fills slurry in flower steel pipe from inside to outside, it is soft to take out slip casting
Pipe；Slip casting sleeve (10) one end is connect with flower steel pipe (6) openend, other end connection slip casting hose, with cement mortar high-pressure pump
Slip casing by pressure, grouting pressure 1-2MPa, voltage stabilizing 5 minutes, mortar are penetrated into the soil body of periphery, play the role of soil mass consolidation；
5) after the completion of slip casting, slip casting sleeve (10) is removed, it, will using mechanical equipment in flower steel pipe openend installation billet (2)
Hold-doun nut (1) is tightened onto the screw thread of colored steel pipe openend；
6) it after the soil nailing constructed reaches 70% design strength, cuts the earth to lower one of soil nailing absolute altitude depth, carries out down together
The construction of soil nailing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810174149.XA CN108222022A (en) | 2018-03-02 | 2018-03-02 | A kind of tubular type Soil-Nailing Wall Structure and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810174149.XA CN108222022A (en) | 2018-03-02 | 2018-03-02 | A kind of tubular type Soil-Nailing Wall Structure and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108222022A true CN108222022A (en) | 2018-06-29 |
Family
ID=62662504
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810174149.XA Pending CN108222022A (en) | 2018-03-02 | 2018-03-02 | A kind of tubular type Soil-Nailing Wall Structure and its construction method |
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| CN (1) | CN108222022A (en) |
Cited By (3)
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| CN109854814A (en) * | 2018-11-30 | 2019-06-07 | 福建建中建设科技股份有限公司 | A kind of jacking pipe structure and the method for jacking pipe structure periphery lubrication slip casting |
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| CN114592409A (en) * | 2022-05-10 | 2022-06-07 | 中建五局第三建设有限公司 | Vehicle ramp foundation treatment method for high underground water level and reinforcing structure thereof |
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| CN109854814B (en) * | 2018-11-30 | 2024-04-19 | 福州庭佳建设工程有限公司 | Push pipe structure and peripheral lubrication grouting method thereof |
| 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 |
| CN114592409A (en) * | 2022-05-10 | 2022-06-07 | 中建五局第三建设有限公司 | Vehicle ramp foundation treatment method for high underground water level and reinforcing structure thereof |
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Application publication date: 20180629 |