CN107119682B - A kind of soil nail wall and its construction method - Google Patents
A kind of soil nail wall and its construction method Download PDFInfo
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- CN107119682B CN107119682B CN201710276995.8A CN201710276995A CN107119682B CN 107119682 B CN107119682 B CN 107119682B CN 201710276995 A CN201710276995 A CN 201710276995A CN 107119682 B CN107119682 B CN 107119682B
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- cushion block
- reinforcing bar
- nail
- wall
- soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
- E02D5/765—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor removable
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- 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
- 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
- E02D2600/30—Miscellaneous comprising anchoring details
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- Retaining Walls (AREA)
Abstract
The invention discloses a kind of soil nail wall and its construction methods, a kind of soil nail wall includes wall and slip casting soil nailing, the slip casting soil nailing includes cushion block, reinforcing bar nail, end coupling, isolation set and concrete jacket, reinforcing bar nail sequentially passes through cushion block, isolation set is connect with end coupling, pass through cushion block, the setting of isolation set and end coupling, reinforcing bar nail and concrete jacket are separated, reinforcing bar nail is protected, concrete and rebar nail joint touching is avoided to be fixed, after using, it is spirally connected by the first thread segment and threaded perforations and the setting of the second thread segment and screw hole, only needing to rotate reinforcing bar nail can take out reinforcing bar nail from soil.
Description
Technical field
The present invention relates to Soil Nailing Wall support technology field, in particular to a kind of soil nail wall and its construction method.
Background technique
Soil nail wall is a kind of soil body reinforcement technology in situ.Excavation slope is reinforced the soil nailing made of reinforcing bar,
Side slope surface is laid with the slope reinforcement type supporting construction side that one of steel mesh fill-before-fire, one layer of concrete surface layer and earthwork side slope combine
Method.It is configured to be arranged in the reinforcement rod piece (i.e. soil nailing or anchor pole) in slopes formed with its surrounding soil secure bond it is compound
The supporting construction for the similar Form Gravity Breast Wall that body and surface layer are constituted.
Wherein, Authorization Notice No. CN104947684A, Chinese patent that the applying date is on May 27th, 2015 its be directed to base
The unrenewable problem of material after the backfill of hole, discloses a kind of construction party that technique soil-nail wall support can be recycled based on assembled
Method, this supporting construction are made of recoverable soil nail, prefabricated panel, are set in the form of a plurality of straight line in slope surface
Multiple nodes are set, soil nailing is set on node, keel are set between adjacent node, panel, base are installed between a plurality of straight line
Hole is successively excavated to hole bottom, and multiple nodes, soil nailing, keel and panel is successively arranged, and completes the construction of assembled soil-nail wall support；
By using the novel setting that non-slip casting soil nailing can be recycled, it is not necessarily to punching during installation, only need to utilize mechanical drilling tool directly will be certainly
It revolves in the soil nailing strength precession soil body, is recycled, soil nailing can be extracted, to realize supporting using drilling machine opposite direction when foundation pit backfills
The recycling and recycling of material.
By above-mentioned setting, due to not using cement slurry to pour fixed soil nailing, so very convenient both can be carried out recycling
Use, but had the following deficiencies: using non-slip casting soil nailing firstly, soil nailing not over slip casting protection and directly it is exposed outside,
It gets rusty easily in the place of some humidities；Secondly, the main function of reinforcing bar is resistance to compression under construction, the main function of concrete is
Tension realizes the effect of resistance to compression, tension by being combined to the two, so the setting of non-slip casting soil nailing its tension effect is not
It is good, there is more limitation when in use.
Summary of the invention
The purpose of the present invention one is to provide a kind of soil nail wall, has while guaranteeing to recycle soil nailing, can be with
Pass through the tension effect of concrete protective drawing pin and raising soil nailing.
Above-mentioned technical purpose one of the invention has the technical scheme that
A kind of soil nail wall, including wall and slip casting soil nailing, the slip casting soil nailing include:
Cushion block, cylindrical and fixation are inserted on wall, and the threaded perforations through both ends are provided in the cushion block；
Reinforcing bar nail, including inner end and outer end, the outside end are provided with the first thread segment with threaded perforations cooperation, institute
It states inner end end and is provided with the second thread segment, the threaded perforations of cushion block are run through in the inner end；
End coupling is provided with the threaded hole with the cooperation of the second thread segment, and the threaded hole is closed at one end and and screw thread
The hand of spiral in perforation is identical；
Isolation set is sheathed on outside reinforcing bar nail for completely cutting off concrete and reinforcing bar nail, is located at the end coupling and cushion block
Between；
Concrete jacket is in the form of a column and is coated on outside isolation set and end coupling.
Using the above structure, by the setting of cushion block, isolation set and end coupling, by reinforcing bar nail and concrete jacket point
It separates and reinforcing bar nail is protected, avoid concrete and rebar nail joint touching from being fixed, after using, pass through the first thread segment
Be spirally connected with threaded perforations and the setting of the second thread segment and screw hole, it is only necessary to rotate reinforcing bar nail reinforcing bar can be followed closely from
It is taken out in soil.
Further preferably, prestressing force strainer, the prestressing force strainer packet are provided on the slip casting soil nailing
It includes:
Tensioning nut is threadedly connected to the outer end of reinforcing bar nail, and one end end face is abutted with cushion block；
Sliding component, circumferentially fixed, axial sliding are sheathed in cushion block, and the threaded perforations are set on sliding component.
Using the above structure, it continues to rotate and opens after rotation tensioning nut is abutted with cushion block by the setting of tensioning nut
Tight nut can nail in reinforcing bar and generate outside pulling force, and due to the setting of sliding component, so that reinforcing bar nail can be in cushion block
Activity, and the inner end of reinforcing bar nail is connected on end coupling, so under a stretching force, reinforcing bar nail can be pre-tightened, is generated
Prestressing force improves the crushing resistance of slip casting soil nailing so that reinforcing bar nail has stronger anti-pressure ability.
Further preferably are as follows: the cross section of the sliding component is in polygon, cross, ellipse or gear shape, the pad
Block is provided with the spliced eye for sliding component installation backwards to one end of end coupling.
Using the above structure, it realizes circumferentially fixed, the axial sliding setting of sliding component, and is installed to cushion block convenient for sliding component
On.
Further preferably are as follows: the cushion block is arranged in the taper of tip towards end coupling；On the cushion block lateral wall
It is provided with disassembly screw thread, the disassembly screw thread is thread groove；The cushion block is provided with convenient turn far from one end of end coupling
The well of dynamic cushion block.
Using the above structure, it is arranged by taper, weakens the bonding strength between cushion block and concrete walls, passing through thread groove
Setting enhancing concrete walls between bonding strength in cushion block axial direction, the connection between cushion block and concrete walls is changed with this
Structure, when needing to dismantle, cushion block can be taken out by rotating cushion block by well.
Further preferably are as follows: the wall is concrete walls, is provided with steel mesh in the wall.
Using the above structure, the use cost of concrete walls is lower, is suitble to soil nail wall to use time longer occasion, is not necessarily to
The problems such as consideration is got rusty.
Further preferably are as follows: the wall includes concrete wall surface and the combination outside concrete wall surface, the spelling
Connecing wall includes more keel and several metal splice plates, and the jack for cushion block insertion is provided on the keel, and the metal is spelled
Fishplate bar is fixed between adjacent two keel.
Using the above structure, higher operating costs, but can recycle and be reused, when being suitable for soil nail wall use
Between shorter occasion, metal splice plate is exposed to be also not susceptible to the problems such as getting rusty outside, can more frequently be reused.
Further preferably are as follows: socket is provided on the cushion block and end coupling for the both ends insertion of isolation set.
Using the above structure, the setting of socket, so that cushion block, end coupling are connect with isolation inner room with centainly close
Feng Xing, reduces concrete and aqueous solution is penetrated in isolation set and touched with reinforcing bar nail joint, plays reinforcing bar nail with good protection.
Further preferably are as follows: the isolation set is made of plastics or rubber.
Using the above structure, use cost is low, and waterproof, fastness are all preferable, can play isolation protection well and make
With.
The purpose of the present invention two is to provide a kind of construction method of soil nail wall.
Above-mentioned technical purpose two of the invention has the technical scheme that
A kind of construction method of soil nail wall, it is characterized in that the following steps are included:
(1) it installs
S1, base's spraying, behind the side slope face of finishing foundation pit, coat substrate concrete, substrate concrete on side slope face
Thickness 150-200mm；
S2, pore-forming determine soil nailing position and hanging wire positioning according to demand, are then directed at hole location center by drilling machine and carry out soil
Nail hole drills through, wherein hole depth and diameter are depending on construction demand；
S3, soil nailing molding, reinforcing bar nail is inserted into isolation set, and end coupling is threadedly coupled in reinforcing bar nail
End, and reinforcing bar nail is inserted into soil nailing hole, then the grout injection into soil nailing hole, stops filling when until completely cutting off set end
Note；
S4, cushion block installation, after completing grout pouring, are connected to reinforcing bar for cushion block before cement slurry sets and nail on, directly
It is inserted into cement slurry to cushion block, is filled after then being hollowed out around cushion block with soil cement and connect into cushion block and substrate concrete
One；
S5, reinforcing bar nail pre-tighten, and tensioning nut is connected on the first thread segment, is continued after tensioning nut is abutted with cushion block
Rotation, until reinforcing bar nail is tightened；
S6, steel mesh are fixed, and knit out steel mesh with reinforcing bar on substrate concrete wall；
S7, wall spraying form wall, second layer coagulation in substrate concrete and the second layer concrete of steel mesh trypsin method
Soil thickness is 150-200mm and did not had cushion block；
(2) it dismantles
S1, disassembly reinforcing bar nail, tensioning nut is removed, and then rotating reinforcing bar nail makes the second thread segment elder generation and end coupling
Separation continues to rotate reinforcing bar and follows closely so that the first thread segment is separated with threaded perforations, then goes out reinforcing bar nail puller；
S2, disassembly cushion block, rotating cushion block by well separates cushion block with wall, then takes out cushion block.
The purpose of the present invention three is to provide a kind of construction method of soil nail wall.
Above-mentioned technical purpose three of the invention has the technical scheme that
A kind of construction method of soil nail wall, it is characterized in that the following steps are included:
(1) it installs
S1, base's spraying, behind the side slope face of finishing foundation pit, coat substrate concrete, substrate concrete on side slope face
Thickness 150-200mm；
S2, pore-forming determine soil nailing position and hanging wire positioning according to demand, are then directed at hole location center by drilling machine and carry out soil
Nail hole drills through, wherein hole depth and diameter are depending on construction demand；
S3, soil nailing molding, reinforcing bar nail is inserted into isolation set, and end coupling is threadedly coupled in reinforcing bar nail
End, and reinforcing bar nail is inserted into soil nailing hole, then the grout injection into soil nailing hole, stops filling when until completely cutting off set end
Note；
S4, cushion block installation, after completing grout pouring, keel are placed on substrate concrete at once, make jack and
Reinforcing bar nail is arranged in a one-to-one correspondence, and cushion block is then connected to reinforcing bar and is nailed on, until keel are pressed on substrate concrete by cushion block；So
So that cushion block is linked into an integrated entity with substrate concrete with soil cement landfill after hollowing out around cushion block afterwards, and controls cement slurry dosage and keep away
Exempt to adhere to keel on substrate concrete；
S5, reinforcing bar nail pre-tighten, and tensioning nut is connected on the first thread segment, is continued after tensioning nut is abutted with cushion block
Rotation, until reinforcing bar nail is tightened；
S6, the installation of metal splice plate, the two sides of metal splice plate are plugged on the slot on two keel, are installed
To between two keel, then metal splice plate is fixed on keel by fixing bolt and forms metal wall；
(2) it dismantles
S1, disassembly metal splice plate one by one all take out metal splice plate after unclamping fixing bolt；
S2, disassembly reinforcing bar nail, rotation reinforcing bar nail separate the second thread segment first with end coupling, continue to rotate reinforcing bar nail
So that the first thread segment is separated with threaded perforations, then reinforcing bar nail puller is gone out；
S3, disassembly cushion block and keel, rotating cushion block by well separates cushion block with wall, then takes out cushion block and dragon
Bone.
In conclusion the invention has the following advantages:
1, reinforcing bar is followed closely by cushion block, isolation set and end coupling and concrete jacket is separated and protected to reinforcing bar nail
Shield avoids concrete and rebar nail joint touching from being fixed and reduce its burn into and gets rusty phenomenon；
2, reinforcing bar nail can be pre-tightened under the action of sliding component by screwing tensioning nut, is added after completion of installation
It can make reinforcing bar nail preferably in tensioned state, make it have very since reinforcing bar follows closely discord concreting together
Excellent effect of resist compression；
3, it after using, is spirally connected by the first thread segment and threaded perforations and the second thread segment and screw hole
Setting, it is only necessary to which rotating reinforcing bar nail can take out reinforcing bar nail from soil, and being rotated further by cushion block can be by cushion block and concrete point
From realization reuse.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment one；
Fig. 2 is the side section of embodiment one；
Fig. 3 is the overall structure diagram of slip casting soil nailing in embodiment one；
Fig. 4 is the external structure schematic diagram of slip casting soil nailing in embodiment one；
Fig. 5 is the structural schematic diagram of cushion block and sliding component in embodiment one；
Fig. 6 is the structural schematic diagram of embodiment two；
The structural schematic diagram of keel in Fig. 7 embodiment two.
In figure, 1, wall；11, steel mesh；2, slip casting soil nailing；21, cushion block；211, screw thread is dismantled；212, spliced eye；22,
Reinforcing bar nail；221, hand handle；222, the first thread segment；223, the second thread segment；23, isolation set；24, end coupling；25, coagulation
Native crust；26, prestressing force strainer；261, tensioning nut；262, sliding component；3, threaded perforations；4, combination；41, keel；
411, jack；42, metal splice plate；5, fixing bolt.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the protection scope of invention.
Embodiment 1: a kind of soil nail wall, referring to Fig.1 comprising wall 1 and several slip casting soil nailings 2, wall 1 pass through spraying
The mode of concrete is formed on the side slope face of foundation pit, plays the role of stopping the soil body, slip casting soil nailing 2 passes through wall 1 and is inserted into mud
Firm effect is played in soil.
Wherein, as shown in Fig. 2, wall 1 is lower-cost concrete walls, it is provided with steel mesh 11 in wall 1, for dividing
The pressure that scattered metope is subject to keeps wall 1 more firm.
Referring to Fig. 3, slip casting soil nailing 2 include cushion block 21, reinforcing bar nail 22, end coupling 24, prestressing force strainer 26, every
Set 23 and concrete jacket 25 absolutely.Wherein, cushion block 21 is tapered, tip is towards 1 inside of wall and fixation is inserted on wall 1,
The disassembly screw thread 211(combination attached drawing 4 of screw thread channel-shaped is provided on 21 lateral wall of cushion block), cushion block 21 is internally provided with through both ends
Threaded perforations 3(referring to attached drawing 5).
Reinforcing bar nail 22 passes through cushion block 21 and for the ease of the dismounting of reinforcing bar nail 22, and reinforcing bar follows closely 22 outside ends and is bent to form one
Hand handle 221, the first thread segment 222 cooperated with threaded perforations 3 that reinforcing bar nail 22 is arranged by its outer end bending part the last period with
Cushion block 21 is threadedly coupled, and plays the role of fixed steel bars nail 22.The inner end of reinforcing bar nail 22 is provided with the second thread segment 223, reinforcing bar
The inner end of nail 22 plugs after passing through threaded perforations 3 on isolation set 23 and through isolation set 23, passes through the second thread segment 223 and end
Portion's connector 24 connects, and the both ends that socket is provided on end coupling 24 and cushion block 21 for isolation set 23 are inserted into, to mention
High overall tightness prevents concrete and aqueous solution from penetrating in isolation set 23, protection reinforcing bar nail 22.
Wherein, above-mentioned isolation set 23 is made of rubber.
As shown in Figure 3 and Figure 4, prestressing force strainer 26 includes tensioning nut 261 and sliding component 262, tensioning nut 261
It is threadedly connected to reinforcing bar to follow closely on the second thread segment 223 of 22 outer ends, and one end-face is abutted with cushion block 21.Reference Fig. 3 and 5,
One end end face that cushion block 21 is abutted with tensioning nut 261 is provided with the spliced eye 212 of a regular hexagon, sliding component 262 and inserts
It connects the cooperation of hole 212 and is plugged in spliced eye 212, wherein the depth that the length of sliding component 262 is less than spliced eye 212 makes it can
With, along axial sliding, above-mentioned threaded perforations 3 are arranged on sliding component 262 and run through sliding component 262 in spliced eye 212.Pass through
Axial rotation tensioning nut 261 is pressed on it on cushion block 21, then pulls reinforcing bar nail 22 under the sliding effect of sliding component 262
It realizes and pre-tightens.
Referring to Fig. 5, cushion block 21 is connected with the well for facilitating rotation cushion block 21 far from one end of end coupling 24, convenient
Cushion block 21 is from the disassembly in wall 1, and in the present embodiment, well is spliced eye 212.
Working principle: when installation, reinforcing bar nail 22 screws in 21 threaded perforations 3 of cushion block, and inner end screws in the spiral shell of end coupling 24
Pit is completely fixed reinforcing bar nail 22, and outside is surrounded by isolation set 23, is coated with concrete jacket 25 outside isolation set 23, makes
Reinforcing bar nail 22 is not contacted directly with concrete and is fixed dead.When dismounting, reinforcing bar reversely can be followed closely 22 from cushion block 21 and wall 1
Inside screws out, and achievees the purpose that reinforcing bar nail 22 is reused.
And cushion block 21 can also be disassembled from 1 internal segment spot hole of wall with same principle by dismantling screw thread 211, make to pad
Block 21 also realizes reuse.
A kind of embodiment 2: the construction method of the soil nail wall in embodiment 1, comprising the following steps:
(1) it installs
S1, base's spraying, behind the side slope face of finishing foundation pit, coat substrate concrete, substrate concrete on side slope face
Thickness 150mm；
S2, pore-forming determine soil nailing position and hanging wire positioning according to demand, are then directed at hole location center by drilling machine and carry out soil
Nail hole drills through, wherein hole depth and diameter are depending on construction demand；
S3, soil nailing molding, reinforcing bar nail 22 is inserted into isolation set 23, and end coupling 24 is threadedly coupled to reinforcing bar nail
22 inner end, and reinforcing bar nail 22 is inserted into soil nailing hole, then the grout injection into soil nailing hole, covers 23 ends until completely cutting off
When stop perfusion；
Cushion block 21 is connected to reinforcing bar nail 22 before cement slurry sets after completing grout pouring by S4, cushion block installation
On, until cushion block 21 is inserted into cement slurry, filled with soil cement by cushion block 21 and base after then being hollowed out around cushion block 21
Concrete links into an integrated entity；
S5, reinforcing bar nail pre-tighten, and tensioning nut 261 are connected on the first thread segment 222, in tensioning nut 261 and cushion block
It is continued to rotate after 21 abuttings, until reinforcing bar nail 22 is tightened；
S6, steel mesh are fixed, and knit out steel mesh 11 with reinforcing bar on substrate concrete wall；
S7, wall spraying form wall 1, the second layer in substrate concrete and 11 the second layer concrete of trypsin method of steel mesh
Concrete thickness is 200mm and did not had cushion block 21；
(2) it dismantles
S1, disassembly reinforcing bar nail, tensioning nut 261 is removed, and then rotating reinforcing bar nail 22 keeps the second thread segment 223 first and end
Portion's connector 24 separates, and continues to rotate reinforcing bar nail 22 and first thread segment 222 is separated with threaded perforations 3, then follow closely reinforcing bar
22 extract；
S2, disassembly cushion block, rotating cushion block 21 by well separates cushion block 21 with wall 1, then takes out cushion block 21.
The purpose of the present invention three is to provide a kind of construction method of soil nail wall.
Above-mentioned technical purpose three of the invention has the technical scheme that
Embodiment 3: referring to Fig. 6, the difference from embodiment 1 is that, wall 1 is including concrete wall surface and is set to concrete walls
Combination 4 outside face, concrete wall surface spray formation by concrete on excavation slope face.Combination 4 includes more keel
41 and several metal splice plates 42, in conjunction with attached drawing 7, the cross section of keel 41 is in " I-shaped " type, and be provided with it is multiple for
The jack 411 that cushion block 21 is inserted into is formed between adjacent two keel 41 after keel 41 are fixed on concrete wall surface by cushion block 21
Inserting groove, metal splice plate 42 are installed on keel 41 by inserting groove, are then connected and fixed by fixing bolt 5.
A kind of embodiment 4: the construction method of the soil nail wall in embodiment 3, comprising the following steps:
(1) it installs
S1, base's spraying, behind the side slope face of finishing foundation pit, coat substrate concrete, substrate concrete on side slope face
Thickness 180mm；
S2, pore-forming determine soil nailing position and hanging wire positioning according to demand, are then directed at hole location center by drilling machine and carry out soil
Nail hole drills through, wherein hole depth and diameter are depending on construction demand；
S3, soil nailing molding, reinforcing bar nail 22 is inserted into isolation set 23, and end coupling 24 is threadedly coupled to reinforcing bar nail
22 inner end, and reinforcing bar nail 22 is inserted into soil nailing hole, then the grout injection into soil nailing hole, covers 23 ends until completely cutting off
When stop perfusion；
Keel 41, after completing grout pouring, are placed on substrate concrete at once, make jack by S4, cushion block installation
411 are arranged in a one-to-one correspondence with reinforcing bar nail 22, and then cushion block 21 is connected on reinforcing bar nail 22, until cushion block 21 compresses keel 41
In substrate concrete；Then cushion block 21 and substrate concrete is made to connect into one with soil cement landfill after hollowing out around cushion block 21
Body, and control cement slurry dosage and avoid adhering to keel 41 on substrate concrete；
S5, reinforcing bar nail pre-tighten, and tensioning nut 261 are connected on the first thread segment 222, in tensioning nut 261 and cushion block
It is continued to rotate after 21 abuttings, until reinforcing bar nail 22 is tightened；
S6, the installation of metal splice plate, the two sides of metal splice plate 42 are plugged on the slot on two keel 41, by it
It is installed between two keel 41, then metal splice plate 42 is fixed on keel 41 by fixing bolt 5 and forms metal wall；
(2) it dismantles
S1, disassembly metal splice plate one by one all take out metal splice plate 42 after unclamping fixing bolt 5；
S2, disassembly reinforcing bar nail, rotation reinforcing bar nail 22 separate the second thread segment 223 first with end coupling 24, continue to turn
Dynamic reinforcing bar nail 22 separates the first thread segment 222 with threaded perforations 3, then extracts reinforcing bar nail 22；
S3, disassembly cushion block and keel, rotating cushion block 21 by well separates cushion block 21 with wall 1, then takes out pad
Block 21 and keel 41.
Claims (10)
1. a kind of soil nail wall, including wall (1) and slip casting soil nailing (2), characterized in that the slip casting soil nailing (2) includes:
Cushion block (21), cylindrical and fixation are inserted on wall (1), and the screw thread through both ends is provided in the cushion block (21)
It perforates (3)；
Reinforcing bar follows closely (22), including inner end and outer end, and the outside end is provided with the first thread segment with threaded perforations (3) cooperation
(222), the inner end end is provided with the second thread segment (223), and the threaded perforations (3) of cushion block (21) are run through in the inner end；
End coupling (24), be provided with the second thread segment (223) cooperation threaded hole, the threaded hole it is closed at one end and with
The hand of spiral in threaded perforations (3) is identical；
Isolation set (23) is sheathed on reinforcing bar nail (22) outside for completely cutting off concrete and reinforcing bar nail (22), is located at the end and connects
Between part (24) and cushion block (21)；
Concrete jacket (25) is in the form of a column and is coated on isolation set (23) and end coupling (24) outside.
2. a kind of soil nail wall according to claim 1, characterized in that be provided with prestressing force on the slip casting soil nailing (2)
Tight mechanism (26), the prestressing force strainer (26) include:
Tensioning nut (261) is threadedly connected to the outer end of reinforcing bar nail (22), and one end end face is abutted with cushion block (21)；
Sliding component (262), circumferentially fixed, axial sliding are sheathed in cushion block (21), and the threaded perforations (3) are set to sliding component
(262) on.
3. a kind of soil nail wall according to claim 2, it is characterized in that: the cross section of the sliding component (262) in polygon,
Cross, ellipse or gear shape, the cushion block (21) are provided with backwards to the one end of end coupling (24) for sliding component (262)
The spliced eye (212) of installation.
4. a kind of soil nail wall according to claim 1 or 2 or 3, it is characterized in that: the cushion block (21) is in tip towards end
The taper of connector (24) is arranged；Disassembly screw thread (211), the disassembly screw thread are provided on cushion block (21) lateral wall
It (211) is thread groove, the cushion block (21) is provided with the work for facilitating rotation cushion block (21) far from the one end of end coupling (24)
Has slot.
5. a kind of soil nail wall according to claim 4, it is characterized in that: the wall (1) is concrete walls, the wall
(1) steel mesh (11) are provided in.
6. a kind of soil nail wall according to claim 4, it is characterized in that: the wall (1) includes concrete wall surface and is set to
Combination (4) outside concrete wall surface, the combination (4) include more keel (41) and several metal splice plates (42), institute
The jack (411) being provided on keel (41) for cushion block (21) insertion is stated, the metal splice plate (42) is fixed on adjacent two dragon
Between bone (41).
7. a kind of soil nail wall according to claim 1 or 2 or 3, it is characterized in that: the cushion block (21) and end coupling
(24) socket is provided on for (23) the both ends insertion of isolation set.
8. a kind of soil nail wall according to claim 7, it is characterized in that: isolation set (23) uses plastics or rubber system
At.
9. a kind of construction method based on the soil nail wall described in claim 5, it is characterized in that the following steps are included:
(1) it installs
S1, base's spraying, behind the side slope face of finishing foundation pit, the coat substrate concrete on side slope face, the thickness of substrate concrete
Spend 150-200mm；
S2, pore-forming determine soil nailing position and hanging wire positioning according to demand, are then directed at hole location center by drilling machine and carry out soil nailing hole
It drills through, wherein hole depth and diameter are depending on construction demand；
S3, soil nailing molding, reinforcing bar nail (22) is inserted into isolation set (23), end coupling (24) is threadedly coupled to reinforcing bar
The inner end of (22) is followed closely, and reinforcing bar nail (22) is inserted into soil nailing hole, then grout injection forms concrete into soil nailing hole
Crust (25), until stopping perfusion when isolation set (23) end；
Cushion block (21) is connected to reinforcing bar nail (22) before cement slurry sets after completing grout pouring by S4, cushion block installation
On, until cushion block (21) be inserted into cement slurry, with soil cement landfill by cushion block (21) after then hollowing out around cushion block (21)
It links into an integrated entity with substrate concrete；
S5, reinforcing bar nail pre-tighten, and tensioning nut (261) are connected on the first thread segment (222), in tensioning nut (261) and pad
Block (21) continues to rotate after abutting, until reinforcing bar nail (22) is tightened；
S6, steel mesh are fixed, and knit out steel mesh (11) with reinforcing bar on substrate concrete wall；
S7, wall spraying form wall (1) in substrate concrete and steel mesh (11) second layer concrete of trypsin method, the second layer
Concrete thickness is 150-200mm and did not had cushion block (21)；
(2) it dismantles
S1, disassembly reinforcing bar nail, tensioning nut (261) is removed, then rotate reinforcing bar nail (22) make the second thread segment (223) first with
End coupling (24) separation continues to rotate reinforcing bar nail (22) and the first thread segment (222) is separated with threaded perforations (3), so
Reinforcing bar nail (22) is extracted afterwards；
S2, disassembly cushion block, separate cushion block (21) with wall (1) by well rotation cushion block (21), then take out cushion block
(21)。
10. a kind of construction method based on soil nail wall as claimed in claim 6, it is characterized in that the following steps are included:
(1) it installs
S1, base's spraying, behind the side slope face of finishing foundation pit, the coat substrate concrete on side slope face, the thickness of substrate concrete
Spend 150-200mm；
S2, pore-forming determine soil nailing position and hanging wire positioning according to demand, are then directed at hole location center by drilling machine and carry out soil nailing hole
It drills through, wherein hole depth and diameter are depending on construction demand；
S3, soil nailing molding, reinforcing bar nail (22) is inserted into isolation set (23), end coupling (24) is threadedly coupled to reinforcing bar
The inner end of (22) is followed closely, and reinforcing bar nail (22) is inserted into soil nailing hole, then grout injection forms concrete into soil nailing hole
Crust (25), until stopping perfusion when isolation set (23) end；
Keel (41), after completing grout pouring, are placed on substrate concrete at once, make jack by S4, cushion block installation
(411) it is arranged in a one-to-one correspondence with reinforcing bar nail (22), then cushion block (21) is connected on reinforcing bar nail (22), until cushion block (21) will
Keel (41) are pressed on substrate concrete；Then make cushion block (21) and base with soil cement landfill after hollowing out around cushion block (21)
Concrete links into an integrated entity, and controls cement slurry dosage and avoid adhering to keel (41) on substrate concrete；
S5, reinforcing bar nail pre-tighten, and tensioning nut (261) are connected on the first thread segment (222), in tensioning nut (261) and pad
Block (21) continues to rotate after abutting, until reinforcing bar nail (22) is tightened；
S6, metal splice plate (42) installation, the two sides of metal splice plate (42) are plugged on the slot on two keel (41),
It attaches it between two keel (41), then metal splice plate (42) is fixed on keel (41) by fixing bolt (5)
Form metal wall；
(2) it dismantles
S1, disassembly metal splice plate one by one all take out metal splice plate (42) after unclamping fixing bolt (5)；
S2, disassembly reinforcing bar nail, rotation reinforcing bar nail (22) separate the second thread segment (223) first with end coupling (24), continue
Rotation reinforcing bar nail (22) separates the first thread segment (222) with threaded perforations (3), then extracts reinforcing bar nail (22)；
S3, disassembly cushion block and keel separate cushion block (21) with wall (1) by well rotation cushion block (21), then take out
Cushion block (21) and keel (41).
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108222020A (en) * | 2018-02-26 | 2018-06-29 | 北京城建华夏基础建设工程有限公司 | A kind of multilayer tool-type soil nailing faceplate supporting construction |
| CN108824466A (en) * | 2018-06-02 | 2018-11-16 | 北京泽通水务建设有限公司 | A kind of foundation pit side-wall water burst gushes the processing method of sand |
| CN108643224A (en) * | 2018-06-11 | 2018-10-12 | 北京爱地地质勘察基础工程公司 | A kind of assembled soil nailed wall retaining structure and its construction method |
| CN111705810B (en) * | 2020-06-24 | 2021-07-20 | 深圳市南华岩土工程有限公司 | Deep foundation pit slope protection surface multistage supporting structure and supporting 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 |
| CN114059561B (en) * | 2021-12-25 | 2023-02-28 | 江苏双楼建设集团有限公司 | Glass fiber reinforced resin soil nail foundation pit supporting system and construction process |
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| CN102182480A (en) * | 2011-05-04 | 2011-09-14 | 中铁三局集团有限公司 | Mortar anchor constructing method |
| CN102605780A (en) * | 2012-04-17 | 2012-07-25 | 周治国 | Recyclable anchor rod for foundation pit support and construction method thereof |
| CN205975601U (en) * | 2016-04-20 | 2017-02-22 | 北京爱地地质勘察基础工程公司 | But recovery type soil nail |
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