CN109235451A - Composite soil nailing wall and construction method can be recycled in assembled flexible surface layer - Google Patents
Composite soil nailing wall and construction method can be recycled in assembled flexible surface layer Download PDFInfo
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- CN109235451A CN109235451A CN201811241441.5A CN201811241441A CN109235451A CN 109235451 A CN109235451 A CN 109235451A CN 201811241441 A CN201811241441 A CN 201811241441A CN 109235451 A CN109235451 A CN 109235451A
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- waist rail
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- 239000002689 soil Substances 0.000 title claims abstract description 84
- 238000010276 construction Methods 0.000 title claims abstract description 43
- 239000002344 surface layer Substances 0.000 title claims abstract description 33
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 239000010410 layer Substances 0.000 claims abstract description 93
- 239000004567 concrete Substances 0.000 claims abstract description 41
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 34
- 238000004078 waterproofing Methods 0.000 claims abstract description 26
- 238000005253 cladding Methods 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000008093 supporting effect Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000011378 shotcrete Substances 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003442 weekly effect Effects 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
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
-
- 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
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- 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)
- Foundations (AREA)
Abstract
The present invention relates to a kind of assembled flexible surface layers, and composite soil nailing wall and construction method can be recycled, it is characterized by comprising an oblique recoverable anchor rod and soil nailing of the construction in crater wall, it successively constructs in crater wall hydrophobic layer, waterproofing geomembrane, TGXG, concrete fireproof layer, is fixed on foundation pit top surface at the top of waterproofing geomembrane and TGXG；Lateral waist rail and longitudinal waist rail is arranged in concrete fireproof layer surface, and recoverable anchor rod is fixed on lateral waist rail, and soil nailing is located in longitudinal waist rail and lateral waist rail cut zone.Its construction method includes upper layer crater wall anchor pole and soil nailing is squeezed into, the construction of upper layer crater wall hydrophobic layer, upper layer crater wall flexible cladding is constructed, upper layer anchor pole and soil nailing are fixed, according to upper layer soil nailing wall construction method construction lower layer's soil nail wall, soil nail wall drainage construction.The features such as structure of the present invention has convenient for disassembly and assembly, construction efficiency height, is suitable for different depth pattern foundation pit supporting structure requirement.
Description
Technical field
The present invention relates to Geotechnical Engineering fields more particularly to a kind of assembled flexible surface layer, and composite soil nailing wall can be recycled
And the construction method of composite soil nailing wall can be recycled in assembled flexible surface layer.
Background technique
Surface layer mainly has following four type: gunite concrete surface layer, cast-in-place concrete in traditional soil-nail wall support system
Surface layer, precast concrete surface layer and rigid panel, and wherein gunite concrete surface layer is the most commonly used form of traditional soil nail wall,
Although this surface layer construction technology is simple, have the disadvantage that concrete consumption is big at high cost in the actual construction process,
The too long construction efficiency of curing time is low, and construction noise, dust effect on environment are big, and concrete topping does not connect closely with part soil layer
It is poor to connect supporting effect, surface layer, which easily seeps water, to fall off.
Traditional soil nail wall gunite concrete surface layer there are aiming at the problem that, it is necessary to develop that a kind of construction period is short, coagulation
The supporting construction and construction method that soil consumes less, antiseepage supporting effect is good, the present invention exactly develop in this context
, applied to generating preferable economic and social benefits in practical foundation pit support construction.
Summary of the invention
It is an object of the invention to big at high cost for concrete consumption in conventional spray concrete soil nail wall support system,
The too long construction efficiency of curing time is low, and construction noise, dust effect on environment are big, and concrete topping does not connect closely with part soil layer
It is poor to connect supporting effect, surface layer easily seeps water the problems such as falling off, propose a kind of assembled flexible surface layer can be recycled composite soil nailing wall and
Its construction method.
For the attainment of one's purpose, technical solution provided by the invention are as follows:
Composite soil nailing wall can be recycled in a kind of assembled flexible surface layer of the present invention, including what is surrounded by inclined crater wall
The bottom of foundation pit, foundation pit is equipped with collecting gutter, and bottom of foundation ditch is laid with water-separating film and spall drain between collecting gutter and crater wall；
Oblique recoverable anchor rod and soil nailing is arranged in interval in the crater wall, and the surface of crater wall is successively equipped with hydrophobic layer, waterproof geotechnique
Film, TGXG and concrete fireproof layer, waterproofing geomembrane and TGXG are integrally laid with from top to down, waterproofing geomembrane and soil
It extends to foundation pit top surface at the top of work grid, and is beared down on one fixation by vertical recoverable anchor rod and concrete, the hydrophobic layer
Bottom be connected to spall drain；The outer surface of concrete fireproof layer is equipped with lateral waist rail and longitudinal waist rail, lateral waist rail and
Longitudinal waist rail is enclosed several rectangular areas, and the end of oblique recoverable anchor rod is fixedly connected on lateral waist rail, soil nailing
End is located in the rectangular area that lateral waist rail and longitudinal waist rail surround.
Preferably, the vertical recoverable anchor rod is located at the foundation pit top surface apart from 2~2.5m of crater wall, and along foundation pit four
Weekly interval arrangement, adjacent vertical recoverable anchor rod spacing 2m.
Preferably, for the oblique recoverable anchor rod in " one " shape arranged for interval crater wall, end is solid using anchor pole
Determine backing plate to be fixed on lateral waist rail.
Preferably, the lateral waist rail and longitudinal waist rail connect by welding.
Preferably, at least two rows, two are respectively provided in the rectangular area being each enclosed by lateral waist rail and longitudinal waist rail
Column soil nailing.
Preferably, the hydrophobic layer includes several high strength fibre netting bags, in each high strength fibre netting bag
Connect sandstone filled with gradation, is connected with each other between adjacent high intensity cordage mesh bag by connection steel wire.
Preferably, the end of the soil nailing and the end of the oblique recoverable anchor rod pass through company arranged in a crossed manner
Connect muscle interconnection.
Preferably, the end of the soil nailing be equipped with expand billet, expand billet diameter be soil nailing diameter 3~
5 times.
The construction method of composite soil nailing wall can be recycled in a kind of above-mentioned assembled flexible surface layer, comprising the following steps:
S1: the oblique recoverable anchor rod of interval construction and soil nailing in the crater wall of upper layer, and it is vertical recyclable in the construction of foundation pit top surface
Anchor pole；
S2: it is laid with upper layer crater wall surface and is laid with hydrophobic layer；
S3: the waterproofing geomembrane and TGXG being successively laid at the crater wall of upper layer, and TGXG surface gunning concrete
Fireprotection layer forms crater wall flexible cladding；
S4: construct lateral waist rail and longitudinal waist rail, and backing plate and anchor are fixed into anchor pole in the end of oblique recoverable anchor rod
Stem nut is fixed on lateral waist rail, and the end of soil nailing is fixed on concrete fireproof layer surface with soil nailing nut；
S5: S1~S4 is repeated, anchor pole, soil nailing, hydrophobic layer and the crater wall flexible cladding of following several layers crater wall are sequentially completed
Construction；
S6: foundation pit bottom surface excavate spall drain and collecting gutter replacement, the both ends of spall drain respectively with hydrophobic layer and
Collecting gutter connection.
Preferably, in the S3, the top vertical recoverable anchor rod and coagulation soil pressure of waterproofing geomembrane and TGXG
Top is fixed, and is successively laid on hydrophobic layer from top to down, extra waterproofing geomembrane and soil after the completion of the laying of upper layer crater wall
Work grid rolls；In the S5, after the completion of the hydrophobic layer construction of lower layer's crater wall, then the waterproofing geomembrane enclosed and geotechnological lattice
Grid are successively laid on from top to down on the hydrophobic layer of lower layer's crater wall.
Using technical solution provided by the invention, compared with prior art, have the following beneficial effects:
(1) flexible cladding of the present invention is arranged in pairs or groups mutually use using waterproofing geomembrane, TGXG, and waterproofing geomembrane can prevent
Precipitation immerses the slopes of excavation slope, prevents foundation pit slopes from generating expansive force, and TGXG can discharge excavation slope soil body pressure
Power reduces the load that soil nailing undertakes, guarantees the stabilization of foundation pit.
(2) water from steady soil layer is imported into spall drain by hydrophobic layer and is discharged to collecting gutter again by the present invention, is solved
From steady soil layer drainage problem.
(3) oblique recoverable anchor rod is fixedly connected on lateral waist rail, is added after lateral waist rail and longitudinal waist rail welded connecting
Gu entire crater wall, and reinforced in the region of division with soil nailing, the combination of anchor pole, soil nailing, waist rail substantially increases foundation pit
Supporting intensity.
(4) it is just sprayed compared to conventional steel bar concrete surface layer, steel mesh braiding is laid with, 3 procedures of spray, and curing time eventually
Too long status, the present invention replace conventional steel bar concrete surface layer using flexible cladding, shorten concrete ejection and maintenance age
Phase shortens the construction period about 20%.
(5) present invention only consumes a small amount of concrete, has saved resource, while solving the noise of gunite concrete, fugitive dust
Equal problem of environmental pollutions, comply fully with scientific development and the requirement of low-carbon economy.
(6) flexible cladding, anchor pole are recyclable material in the present invention, greatly reduce Master Cost, save construction
Cost.
Detailed description of the invention
Fig. 1 is the sectional view that composite soil nailing wall can be recycled in assembled flexible surface layer；
Fig. 2 is high strength fibre netting bag schematic diagram；
Fig. 3 is the high strength fibre netting bag schematic diagram for filling gradation and connecting sandstone；
Fig. 4 is that schematic diagram is completed in hydrophobic layer construction；
Fig. 5 is the structural schematic diagram after anchor pole, soil nailing fixation；
Fig. 6 is the structural schematic diagram after the completion of step 1 of the present invention；
Fig. 7 is the structural schematic diagram after the completion of step 2 of the present invention；
Fig. 8 is the structural schematic diagram after the completion of step 3 of the present invention；
Fig. 9 is the structural schematic diagram after the completion of step 4 of the present invention；
Figure 10 is the structural schematic diagram after the completion of step 5 of the present invention；
Figure 11 is the structural schematic diagram after the completion of step 6 of the present invention.
Mark explanation: 1- bears down on one from steady soil layer, 2- concrete, 3- hydrophobic layer, 4- waterproofing geomembrane, 5- TGXG, 6-
Oblique recoverable anchor rod, 7- concrete expand body section, 8- transverse direction waist rail, the fixed backing plate of 9- anchor pole, 10- soil nailing, 11- expansion steel pad
Plate, 12- soil nailing nut, the spall drain 13-, 14- water-separating film, 15- collecting gutter, 16- intercepting ditch, 17- high strength fibre netting
Bag, 18- gradation connect sandstone, and 19- is open, 20- terminal filament, 21- high strength fibre rope, 22- concrete fireproof layer, 23- dowel,
The interim collecting gutter of 24-, 25- connection steel wire, 26- anchor nut, 27- welding steel, the vertical recoverable anchor rod of 28-, 29- foundation pit top
Face, 30- crater wall, the longitudinal direction 31- waist rail, 32- foundation pit bottom surface.
Specific embodiment
To further appreciate that the contents of the present invention, the present invention is described in detail in conjunction with the embodiments, and following embodiment is used for
Illustrate the present invention, but is not intended to limit the scope of the invention.
Embodiment one:
In conjunction with shown in attached drawing 1, it includes by inclining that composite soil nailing wall, which can be recycled, in a kind of assembled flexible surface layer of the present invention
The bottom of the foundation pit that oblique crater wall 30 surrounds, foundation pit is equipped with collecting gutter 15, and bottom of foundation ditch is between collecting gutter 15 and crater wall 30
It is laid with water-separating film 14 and spall drain 13, oblique recoverable anchor rod 6 and soil nailing 10 in crater wall 30, foundation pit top surface 29 is along hole
Wall 30 has been evenly arranged vertical recoverable anchor rod 28, and vertical recoverable anchor rod 28 adjacent vertically may be used apart from crater wall 2m~2.5m
Recycle 28 spacing 2m of anchor pole.Successively construction has hydrophobic layer 3, waterproofing geomembrane 4, TGXG 5 and coagulation in the crater wall 30
Native fireprotection layer 22.Wherein, the hydrophobic layer 3 is laid with along crater wall 30, and bottom is connected to spall drain 13, acts on
It is discharged in collecting gutter 15 again in the water from steady soil layer 1 is imported into spall drain 13.
In conjunction with shown in attached drawing 2~3, above-mentioned hydrophobic layer 3 connects sandstone 18 by multiple 17 outsourcing gradations of high strength fibre netting bag
Structure be connected with each other, high strength fibre netting bag 17 is having a size of 2m × 2m × 5cm, and high strength fibre netting bag 17 is wherein
Terminal filament 20 is arranged in three edges, and is connected with high strength fibre rope 21, an opening 19 is only stayed, then to high strength fibre netting
Filling level seals opening 19, forms single hydrophobic layer monomer with even sandstone 18 in bag 17.In conjunction with shown in attached drawing 4, dress gradation is connected
The high strength fibre netting bag of sandstone passes through oblique recoverable anchor rod 6 and soil nailing 10 by order and is placed in crater wall 30, and with company
It connects steel wire 25 and is connected with each other the high strength fibre netting bag that dress gradation connects sandstone, form hydrophobic layer 3.
In conjunction with shown in attached drawing 1,3 surface of hydrophobic layer is equipped with crater wall flexible cladding, the crater wall flexible cladding by from down toward
On waterproofing geomembrane 4, TGXG 5 and concrete fireproof layer 22 form.The waterproofing geomembrane 4 and TGXG 5 be
Whole from top to down be laid with is formed, and the top of waterproofing geomembrane 4 and TGXG 5 is laid with to foundation pit top surface 29, and with erecting
Bear down on one to recoverable anchor rod 28 and concrete and 2 be fixed on foundation pit top surface 29, waterproofing geomembrane 4 using two cloth, one film composite earthwork
Film, vertically and horizontally breaking strength >=5kN/m, elongation at break≤30%；TGXG 5 uses direction earthwork grille, vertically and horizontally draws
Yield force >=20kN/m is stretched, vertically and horizontally elongation at break≤30%, elongation percentage≤13%, CBR bursting strength >=1.2kN, geotechnique
5 joint strength of grid cannot be less than the 80% of tensile strength, and 5 mesh size of TGXG is 4cm × 4cm, and rib section is square
Shape；The concrete fireproof layer 22 is the concrete that 1~3mm of a layer thickness is sprayed on waterproofing geomembrane 4 and TGXG 5
Mortar.
In conjunction with shown in attached drawing 1 and 5, the surface of concrete fireproof layer 22 is equipped with lateral waist rail 8 and longitudinal waist rail 31, described
Lateral waist rail 8 and longitudinal waist rail 31 are all made of two 32c type groove steel and are composed, and 27 phase of welding steel is used between two channel steels
Connection, welding steel spacing 20cm, the both ends of longitudinal waist rail 31 and the lateral waist rail 8 of its upper and lower are welded to connect.Described is oblique
It is equipped with the fixed backing plate 9 of anchor pole to the end of recoverable anchor rod 6, the end of oblique recoverable anchor rod 6 is fixedly connected on lateral waist rail 8
On, and locked with anchor nut 26；Soil nailing 10 is located in the rectangular area that lateral waist rail 8 and longitudinal waist rail 31 are enclosed, soil
The expansion billet 11 that the end of nail 10 is equipped with expands billet 11 and uses diameter for the steel plate of 8~12cm, and passes through soil nailing
Nut 12 is locked.Above-mentioned oblique recoverable anchor rod 6 uses II grade or III grade of reinforcing bar, 18~32mm of diameter, oblique recyclable anchor
Bar horizontal spacing 3m, longitudinal pitch 2m；Above-mentioned soil nailing 10 is using using II grade or III grade of reinforcing bar, 16~22mm of diameter, in cross
Soil nailing 10 can be set the form of two column or two or three row two or three column in two rows in the rectangular area surrounded to waist rail 8 and longitudinal waist rail 31
The number of plies.The end of soil nailing 10 and the end of oblique recoverable anchor rod 6 can also be mutual using the dowel 23 of arranged crosswise
Connection, dowel 23 use A8 reinforcing bar.
Above-mentioned assembled flexible surface layer can be recycled composite soil nailing wall construction method the following steps are included:
Step 1: in conjunction with shown in attached drawing 6, construction intercepting ditch 16 and vertical recoverable anchor rod 28 in foundation pit top surface 29, upper
The squeezed slip casting that drills is excavated in layer crater wall 30 and forms concrete expansion body section 7, and is inserted into oblique recoverable anchor rod 6, in upper layer crater wall
30 designated positions construction soil nailing 10, excavates interim collecting gutter 24 in foundation pit bottom surface 32.
Step 2: in conjunction with shown in attached drawing 7, the high strength fibre netting bag 17 that dress gradation connects sandstone 18 is passed through tiltedly by order
It is placed in composition hydrophobic layer 3 in upper layer crater wall 30 to recoverable anchor rod 6 and soil nailing 10, is connected with each other dress gradation with connection steel wire 25
The even high strength fibre netting bag 17 of sandstone 18.
Step 3: in conjunction with shown in attached drawing 8, it is laid with the waterproofing geomembrane 4 and TGXG 5 of upper layer crater wall, when laying, in base
Hole top surface 29 vertical recoverable anchor rod 28 and concrete bear down on one 26 fixed, are successively laid on hydrophobic layer 3 from top to down, upper layer
Crater wall rolls extra waterproofing geomembrane (4), TGXG (5) after the completion of being laid with, and in waterproofing geomembrane 4 and geotechnological lattice
5 surface gunning concrete fireprotection layer 22 of grid forms the crater wall flexible cladding of upper layer crater wall.
Step 4: in conjunction with shown in attached drawing 9, the 22 surface construction transverse direction waist rail 8 of concrete fireproof layer of crater wall and vertical on upper layer
To waist rail 31, oblique recoverable anchor rod 6 is fixed backing plate 9 with anchor pole and is fixed on lateral waist rail 8, and soil nailing 10 uses 12 He of soil nailing nut
Expand billet 11 and be fixed on 22 surface of concrete fireproof layer, dowel 23 is used between oblique recoverable anchor rod 6 and soil nailing 10
Connection.
Step 5: in conjunction with shown in attached drawing 10, upper layer assembled flexible surface layer be can be recycled after the completion of Compound earth nail wall construction, be filled out
Interim collecting gutter 24 is buried, slope excavates interim collecting gutter 24 at lower layer hole bottom 32, carries out the oblique recyclable anchor of lower layer's crater wall 30
The fixed construction of bar 6, soil nailing 10, Specific construction mode is as upper layer, hydrophobic layer 3 of constructing in lower layer's crater wall, anti-what is enclosed
Water geomembrane 4 and TGXG 5 are successively laid on hydrophobic layer 3 from top to down, last gunning concrete fireprotection layer 22.
Step 6: in conjunction with shown in attached drawing 11, spall drain 13 is excavated at hole bottom 32, interim collecting gutter 24 is used collecting gutter
Water from steady soil layer 1, is imported into spall drain 13 by hydrophobic layer 3 and is discharged to collecting gutter 15 again by 15 replacements.
It describes the invention in detail in conjunction with the embodiments above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should all still fall within patent covering scope of the invention.
Claims (10)
1. composite soil nailing wall can be recycled in a kind of assembled flexible surface layer, it is characterised in that: it includes being surrounded by inclined crater wall
The bottom of foundation pit, foundation pit is equipped with collecting gutter, and bottom of foundation ditch is laid with water-separating film and spall drain between collecting gutter and crater wall；
Oblique recoverable anchor rod and soil nailing is arranged in interval in the crater wall, and the surface of crater wall is successively equipped with hydrophobic layer, waterproof geotechnique
Film, TGXG and concrete fireproof layer, waterproofing geomembrane and TGXG are integrally laid with from top to down, waterproofing geomembrane and soil
It extends to foundation pit top surface at the top of work grid, and is beared down on one fixation by vertical recoverable anchor rod and concrete, the hydrophobic layer
Bottom be connected to spall drain；The outer surface of concrete fireproof layer is equipped with lateral waist rail and longitudinal waist rail, lateral waist rail and
Longitudinal waist rail is enclosed several rectangular areas, and the end of oblique recoverable anchor rod is fixedly connected on lateral waist rail, soil nailing
End is located in the rectangular area that lateral waist rail and longitudinal waist rail surround.
2. composite soil nailing wall can be recycled in assembled flexible surface layer according to claim 1, it is characterised in that: described is vertical
Recoverable anchor rod is located at the foundation pit top surface apart from 2~2.5m of crater wall, and is arranged along foundation pit circumferentially-spaced, adjacent vertical recyclable
Anchor pole spacing 2m.
3. composite soil nailing wall can be recycled in assembled flexible surface layer according to claim 1, it is characterised in that: described is oblique
In " one " shape arranged for interval in crater wall, end is fixed on lateral waist rail recoverable anchor rod using the fixed backing plate of anchor pole.
4. composite soil nailing wall can be recycled in assembled flexible surface layer according to claim 1, it is characterised in that: the transverse direction
Waist rail and longitudinal waist rail connect by welding.
5. composite soil nailing wall can be recycled in assembled flexible surface layer according to claim 1, it is characterised in that: each by transverse direction
At least two rows of, two column soil nailings are respectively provided in the rectangular area that waist rail and longitudinal waist rail are enclosed.
6. composite soil nailing wall can be recycled in assembled flexible surface layer according to claim 1, it is characterised in that: described is hydrophobic
Layer includes several high strength fibre netting bags, connects sandstone filled with gradation in each high strength fibre netting bag, adjacent high-strength
It spends between cordage mesh bag and is connected with each other by connection steel wire.
7. composite soil nailing wall can be recycled in assembled flexible surface layer according to claim 1, it is characterised in that: the soil nailing
End and the end of the oblique recoverable anchor rod be connected with each other by dowel arranged in a crossed manner.
8. composite soil nailing wall can be recycled in assembled flexible surface layer according to claim 1, it is characterised in that: the soil nailing
End be equipped with and expand billet, the diameter for expanding billet is 3~5 times of soil nailing diameter.
9. a kind of construction party that composite soil nailing wall can be recycled based on assembled flexible surface layer according to any one of claims 1 to 8
Method, which is characterized in that itself the following steps are included:
S1: the oblique recoverable anchor rod of interval construction and soil nailing in the crater wall of upper layer, and in the vertical recoverable anchor rod of foundation pit top surface construction；
S2: it is laid with upper layer crater wall surface and is laid with hydrophobic layer；
S3: the waterproofing geomembrane and TGXG being successively laid at the crater wall of upper layer, and TGXG surface gunning concrete is prevented fires
Layer forms crater wall flexible cladding；
S4: construct lateral waist rail and longitudinal waist rail, and backing plate and anchor pole spiral shell are fixed into anchor pole in the end of oblique recoverable anchor rod
Mother is fixed on lateral waist rail, and the end of soil nailing is fixed on concrete fireproof layer surface with soil nailing nut；
S5: repeating S1~S4, is sequentially completed applying for the anchor pole of following several layers crater wall, soil nailing, hydrophobic layer and crater wall flexible cladding
Work；
S6: spall drain and collecting gutter replacement are excavated in foundation pit bottom surface, the both ends of spall drain respectively with hydrophobic layer and catchment
Ditch connection.
10. the construction method of composite soil nailing wall can be recycled in assembled flexible surface layer according to claim 9, feature exists
In: in the S3, the top of waterproofing geomembrane and TGXG vertical recoverable anchor rod and concrete bear down on one fixation, and from upper
It is successively laid on hydrophobic layer down, upper layer crater wall rolls extra waterproofing geomembrane and TGXG after the completion of being laid with；
In the S5, after the completion of the construction of the hydrophobic layer of lower layer's crater wall, then the waterproofing geomembrane and TGXG enclosed from top to down according to
On the secondary hydrophobic layer for being laid on lower layer's crater wall.
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| CN201811241441.5A CN109235451A (en) | 2018-10-24 | 2018-10-24 | Composite soil nailing wall and construction method can be recycled in assembled flexible surface layer |
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| CN201811241441.5A CN109235451A (en) | 2018-10-24 | 2018-10-24 | Composite soil nailing wall and construction method can be recycled in assembled flexible surface layer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972632A (en) * | 2019-04-26 | 2019-07-05 | 杭州昂创科技有限公司 | Recoverable soil nail pin-connected panel flexible cladding wall construction method |
| CN110904974A (en) * | 2019-09-22 | 2020-03-24 | 郜君峰 | Recyclable soil nailing wall supporting structure and construction process |
| CN114934524A (en) * | 2022-05-27 | 2022-08-23 | 中国建筑第八工程局有限公司 | Recyclable assembled slope support system and construction method thereof |
| CN114960714A (en) * | 2022-06-28 | 2022-08-30 | 江西省城建集团有限公司 | Near-water-source foundation pit drainage seepage-proofing structure and construction method |
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| CN109972632A (en) * | 2019-04-26 | 2019-07-05 | 杭州昂创科技有限公司 | Recoverable soil nail pin-connected panel flexible cladding wall construction method |
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| CN114960714A (en) * | 2022-06-28 | 2022-08-30 | 江西省城建集团有限公司 | Near-water-source foundation pit drainage seepage-proofing structure and construction method |
| CN114960714B (en) * | 2022-06-28 | 2024-01-05 | 江西省城建集团有限公司 | Near-water foundation pit drainage seepage-proofing structure and construction method |
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