CN107338711A - A kind of construction method that road is built on soft soil foundation - Google Patents
A kind of construction method that road is built on soft soil foundation Download PDFInfo
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- CN107338711A CN107338711A CN201710477890.9A CN201710477890A CN107338711A CN 107338711 A CN107338711 A CN 107338711A CN 201710477890 A CN201710477890 A CN 201710477890A CN 107338711 A CN107338711 A CN 107338711A
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- 239000002689 soil Substances 0.000 title claims abstract description 60
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000011165 3D composite Substances 0.000 claims abstract description 36
- 239000004576 sand Substances 0.000 claims abstract description 34
- 239000004033 plastic Substances 0.000 claims abstract description 25
- 229920003023 plastic Polymers 0.000 claims abstract description 25
- 239000004745 nonwoven fabric Substances 0.000 claims description 25
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 4
- 235000001667 Vitex agnus castus Nutrition 0.000 claims description 3
- 244000063464 Vitex agnus-castus Species 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 3
- 238000007596 consolidation process Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000000463 material Substances 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 235000021186 dishes Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 230000007773 growth pattern Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C21/00—Apparatus or processes for surface soil stabilisation for road building or like purposes, e.g. mixing local aggregate with binder
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
- E02D3/103—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains by installing wick drains or sand bags
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Architecture (AREA)
- Hydrology & Water Resources (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a kind of construction method that road is built on soft soil foundation, and it forms monocoque on barged-in fill upper strata, preliminarily form road structure by the way that filling mud film bag is combined with three-dimensional composite drainage network, vacuum sump draining；Then, set deep layer plastic draining board, lay layer of sand and diaphragm seal, and by setting surcharge preloading load, apply pressure to film bag layer and reclaimed ground, simultaneously in the presence of vacuum sump vacuumizes, further promote the discharge of filling silt soil moisture and the discharge of reclaimed ground moisture in film bag, realize and reinforced simultaneously to filling mud bag and deep ground earth；Load is laid down after subgrade deformation condition meets engineering demand, builds top roadbed and road surface.
Description
Technical field
The invention belongs to the technique of design and construction field of civil engineering soft foundation road structure, and in particular to Yi Zhong
The construction method of road is built on soft soil foundation.
Background technology
Recently as the fast development of China's port construction, the phenomenon of land resource deficiency becomes increasingly conspicuous, reclaiming land around sea
Have become most of port cities now and solve the important means of industrial land.
Requirement in terms of for land reclamation, moistureproof wave resistance and transport, it is necessary to sea gear is built on barged-in fill, enclose low bank between fields and
Road.Conventional method needs the ground engineering materials such as a large amount of outward transport Extra-fine sands, mountain skin soil, block stone.These ground materials exploitation, transport with
And construction both caused environmental disruption to the collecting location of material, and ocean is polluted and destroyed, simultaneously.Quantities
Greatly, it is costly.Therefore, in order to reduce cost, environmental protection is, it is necessary to research and develop a kind of method of new road construction.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide the construction party that road is built on a kind of soft soil foundation
Method.
The present invention is achieved by the following technical solutions：
A kind of construction method that road is built on soft soil foundation, it comprises the following steps：
Step 1：Surface pond is discharged, is worked on former mud face (0) based on laying chaste tree basketry or bamboo sheathing or netted bamboo raft
Bed course (1), and vacuum sump is laid, vacuum sump includes sump under casing (2) and sump adapter (3), and sump connects
Tube wall gathers multiple draining holes, and outer cladding non-woven fabrics filtering layer, and sump under casing is the open cavity casing in top, is catchmented
Immersible pump (2-1) is set inside shaft bottom case (2), and sump adapter bottom end seal is arranged in sump under casing opening, catchmented
Well adapter (3) sealed set suitable for reading has upper lid (3-1), has vacuum orifice (a) and drainpipe outlet (b), draining on upper lid
Pipe outlet (b) is connected by pipeline (m) with the immersible pump (2-1) in sump under casing (2)；
Step 2：One layer of geotechnological non-woven fabrics (4) is laid on working cushion layer (1), and makes sump adapter (3) through geotechnique
The reserved sleeve (5) of non-woven fabrics；
Step 3：Three-dimensional composite drainage network (6), the three-dimensional seam of three-dimensional composite drainage network are laid on geotechnological non-woven fabrics (4)
Sand body is filled with gap, and the sleeve (7) for making sump adapter (3) pass through three-dimensional composite drainage network (6) to reserve；
Step 4：One layer of geomembrane bag (8) is laid on three-dimensional composite drainage network (6), then to first layer geomembrane bag
(8) filling first layer muck soil (9) in；The immersible pump (2-1) opened simultaneously in vacuum sump carries out draining, treats first layer
After mud (9) consolidation forms some strength, then repeat step three and step 4, continue new one layer of three-dimensional composite drainage network
Laying and the laying of geomembrane bag, and muck soil is filled, until constructing to default top mark eminence；
Step 5：Layer of sand (11) is laid on top geomembrane bag, then sets vertical plastic draining board (12), plastics
Drain bar bottom is deeply buried in layer of sand (11) to reclaimed ground layer, plastic draining board (12) wrench；
Step 6：The laying diaphragm seal (10) on layer of sand (11), diaphragm seal (10) edge embedded soil body,
Step 7：Non-woven fabrics overcoat is laid on diaphragm seal (10), mountain skin soil structure layer is laid on non-woven fabrics overcoat
(13), mountain skin soil structure is avoided to be laminated sealer of decoding by non-woven fabrics overcoat；
Step 8：Preloading load (14) is successively laid on mountain skin soil structure layer (13), and taking out for vacuum sump is true
Eat dishes without rice or wine (a) connection vavuum pump, vacuumized and draining；Preloading load (14) is unloaded after deformation condition meets engineering demand
Remove, stopping vacuum sump vacuumizes and draining；
Step 9：Take out vacuum sump and backfill wellhole, constructed on mountain skin soil structure layer (13) and build slope shoulder (15) by laying bricks or stones,
And sub-surface of constructing (16) and top course (17), road structure are completed.
The subgrade strengthening structure formed in above-mentioned work progress：Lay working cushion layer on former mud face, on working cushion layer according to
The secondary multilayer that is equipped with is filled with the film bag layer of muck soil, and is provided with three-dimensional composite drainage network between each film bag layer, three-dimensional
Sand body is filled with the trailing edge slot of composite drainage network；Layer of sand is laid on the film bag layer of top, has been set below layer of sand perpendicular
To plastic draining board, plastic draining board bottom is deeply buried in layer of sand to reclaimed ground layer, plastic draining board (12) wrench
(11) in；In film bag layer, three-dimensional composite drainage network, layer of sand vacuum sump is vertically arranged with (11)；Layer of sand is laid on (11)
There is a diaphragm seal (10), diaphragm seal (10) edge embedded soil body, lay non-woven fabrics overcoat, non-woven fabrics overcoat on diaphragm seal (10)
It is upper to lay mountain skin soil structure layer (13), lay preloading load layer on the skin soil structure layer of mountain.
The advantages of the present invention are：
1, during film bag layer is laid, led to by the use of the three-dimensional composite drainage network between each film bag layer as transverse drainage
Road, the moisture after film bag layer is pressurized in its internal muck soil are extruded, and the moisture of extrusion is horizontal along three-dimensional composite drainage network
It is collected to inside vacuum sump, is then discharged the water in vacuum sump using immersible pump, so as to quickly reduces film bag layer
The water content of muck soil, preliminary hard road structure is formed on barged-in fill upper strata；
Then, deep layer plastic draining board is set, lays layer of sand and diaphragm seal, and by setting surcharge preloading load, to film
Bag layer and reclaimed ground apply pressure, while in the presence of vacuum sump vacuumizes, further promote filling in film bag
Fill out the discharge of silt soil moisture and the discharge of reclaimed ground moisture；During draining, plastic draining board blows as vertical drainage passage
The moisture of filled up ground and the moisture of muck soil can enter plastic draining board, and the moisture of plastic draining board passes through layer of sand and three-dimensional
Composite drainage network is laterally collected to inside vacuum sump, is discharged the water in vacuum sump using immersible pump, so as to realize
Film bag layer and deep layer reclaimed ground are reinforced simultaneously.
2, the muck soil collection in geomembrane bag is from local weak soil of constructing, so as to more convenient, economic, environmental protection.
3, vacuum sump reduces water level, and water level is located at bottom three-dimensional composite drainage network position, makes native in filling film bag
The increase of the effective stress of body and bottom foundation soil body, effective reinforced load increase.
4, by filling muck soil in geomembrane bag, film bag has effectively blocked water body supplement passage, has reduced periphery water
Adverse effect of the body to the soil body in filling film bag.
5, three-dimensional composite drainage network can utilize the self gravitation of water to promote to catchment when filling the lower section integrate draining of film bag
(water of the soil body is flowed downwardly into three-dimensional composite drainage network by self gravitation i.e. in film bag), when being different from draining in traditional vacuum precompressed
The self gravitation of water need to be overcome.
6, sand body is filled with the trailing edge slot of three-dimensional composite drainage network, sand body can both ensure that water can be multiple from three-dimensional
Close the transverse drainage passage flowing of drainage network, and can enough supports three-dimensional composite drainage network, avoid three-dimensional composite drainage network block or
Person's be collapsed.
7, using vacuum sump, during draining, the vacuum orifice connection vaccum-pumping equipment of vacuum sump, catchmented in vacuum
Subnormal ambient is built in well, sand body of the negative pressure along layer of sand, three-dimensional composite drainage network gap is transferred to plastic draining board, so as to promote
Catchment, its catchment speed and effect of catchmenting greatly promote, and can further shorten construction period, lift subgrade strength.
8, construction method of the invention can directly be constructed on reclaimed ground, there is good adaptability.
Brief description of the drawings
Fig. 1 is the constructing structure schematic diagram of the present invention.
Fig. 2 is Fig. 1 A point close-up schematic views.
Fig. 3 is the structural representation of vacuum sump.
Embodiment
Technical scheme is further illustrated with reference to specific embodiment.
Referring to accompanying drawing 1-3, a kind of construction method that road is built on soft soil foundation, it comprises the following steps：
Step 1：Surface pond is discharged, is worked on former mud face (0) based on laying chaste tree basketry or bamboo sheathing or netted bamboo raft
Bed course (1), and vacuum sump is laid, vacuum sump includes sump under casing (2) and sump adapter (3), and sump connects
Tube wall gathers multiple draining holes, and outer cladding non-woven fabrics filtering layer, and sump under casing is the open cavity casing in top, is catchmented
Immersible pump (2-1) is set inside shaft bottom case (2), and sump adapter bottom end seal is arranged in sump under casing opening, catchmented
Well adapter (3) sealed set suitable for reading has upper lid (3-1), has vacuum orifice (a) and drainpipe outlet (b), draining on upper lid
Pipe outlet (b) is connected by pipeline (m) with the immersible pump (2-1) in sump under casing (2)；
Step 2：One layer of geotechnological non-woven fabrics (4) is laid on working cushion layer (1), and makes sump adapter (3) through geotechnique
The reserved sleeve (5) of non-woven fabrics；
Step 3：Three-dimensional composite drainage network (6), the three-dimensional seam of three-dimensional composite drainage network are laid on geotechnological non-woven fabrics (4)
Sand body is filled with gap, and the sleeve (7) for making sump adapter (3) pass through three-dimensional composite drainage network (6) to reserve；
Step 4：One layer of geomembrane bag (8) is laid on three-dimensional composite drainage network (6), then to first layer geomembrane bag
(8) filling first layer muck soil (9) in；The immersible pump (2-1) opened simultaneously in vacuum sump carries out draining, treats first layer
After mud (9) consolidation forms some strength, then repeat step three and step 4, continue new one layer of three-dimensional composite drainage network
Laying and the laying of geomembrane bag, and muck soil is filled, until constructing to default top mark eminence；
Step 5：Layer of sand (11) is laid on top geomembrane bag, then sets vertical plastic draining board (12), plastics
Drain bar bottom is deeply buried in layer of sand (11) to reclaimed ground layer, plastic draining board (12) wrench；
Step 6：The laying diaphragm seal (10) on layer of sand (11), diaphragm seal (10) edge embedded soil body,
Step 7：Non-woven fabrics overcoat is laid on diaphragm seal (10), mountain skin soil structure layer is laid on non-woven fabrics overcoat
(13), mountain skin soil structure is avoided to be laminated sealer of decoding by non-woven fabrics overcoat；
Step 8：Preloading load (14) is successively laid on mountain skin soil structure layer (13), and taking out for vacuum sump is true
Eat dishes without rice or wine (a) connection vavuum pump, vacuumized and draining；Preloading load (14) is unloaded after deformation condition meets engineering demand
Remove, stopping vacuum sump vacuumizes and draining；
Step 9：Take out vacuum sump and backfill wellhole, constructed on mountain skin soil structure layer (13) and build slope shoulder (15) by laying bricks or stones,
And sub-surface of constructing (16) and top course (17), road structure are completed.
In the present embodiment, the compression strength of three-dimensional composite drainage network is not less than 14KN/m, and hydraulic conductivity is not less than 1/m/s,
Thickness is not less than 10mm, sleeve diameter 60cm；
The sump adapter of vacuum sump be ferrous material, and carries out preservative treatment, sump adapter can merogenesis install,
Often section height is 1m, a diameter of 50cm；
Geomembrane bag is sewed by split yarn geotextiles, and using overseam or fourth stitch, ultimate strength is not less than 20kN/m,
Vertical permeability parameters are not less than 10-3cm/s；
Muck soil collection in geomembrane bag is from local weak soil of constructing, so as to more convenient, economic, environmental protection；Fill
When filling out muck soil, mud can be added according to soil nature and fall the reagent that becomes silted up, accelerate to fall to become silted up, if during primary filling degree deficiency, can divide 2 times
Filling, meet thickness requirement；According to soil strength growth pattern, typically need can carry out last layer three-dimensional composite bar within 3 days~7 days
The network of rivers is laid and the laying of geomembrane bag；
Geotechnological non-woven fabrics uses 200g/m2, sleeve diameter 60cm, length 60cm；
Preloading load is not more than 30cm, and continuous two using mountain skin soil, height 3m, unloading standard to estimate sedimentation after work
Month settlement observation settling amount is no more than the 5mm/ months；
The thickness of layer of sand 11 is 30cm；
The grade of side slope of the road structure eventually formed is preferably 1:1；
Sub-surface is cement stabilizing material.
The foundation stabilization principle of above-mentioned construction method is as follows：
During film bag layer is laid, by the use of the three-dimensional composite drainage network between each film bag layer as transverse drainage passage,
Moisture after film bag layer is pressurized in its internal muck soil is extruded, and the moisture of extrusion laterally collects along three-dimensional composite drainage network
To vacuum sump, then the water in vacuum sump is discharged using immersible pump, so as to quickly reduce film bag layer mud
The water content of matter soil, forms preliminary hard road structure on barged-in fill upper strata；
Then, deep layer plastic draining board is set, lays layer of sand and diaphragm seal, and by setting surcharge preloading load, to film
Bag layer and reclaimed ground apply pressure, while in the presence of vacuum sump vacuumizes, further promote filling in film bag
Fill out the discharge of silt soil moisture and the discharge of reclaimed ground moisture；During draining, plastic draining board blows as vertical drainage passage
The moisture of filled up ground and the moisture of muck soil can enter plastic draining board, and the moisture of plastic draining board passes through layer of sand and three-dimensional
Composite drainage network is laterally collected to inside vacuum sump, is discharged the water in vacuum sump using immersible pump, so as to realize
Film bag layer and deep layer reclaimed ground are reinforced simultaneously.
Exemplary description has been done to the present invention above, it should explanation, in the situation for the core for not departing from the present invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent substitution of creative work equal
Fall into protection scope of the present invention.
Claims (2)
1. a kind of construction method that road is built on soft soil foundation, it is characterised in that comprise the following steps：
Step 1：Surface pond is discharged, working cushion layer based on chaste tree basketry or bamboo sheathing or netted bamboo raft is laid on former mud face (0)
(1), and vacuum sump is laid, vacuum sump includes sump under casing (2) and sump adapter (3), sump adapter pipe
Wall gathers multiple draining holes, and outer cladding non-woven fabrics filtering layer, and sump under casing is the open cavity casing in top, sump bottom
Immersible pump (2-1) is set inside case (2), and sump adapter bottom end seal is arranged in sump under casing opening, connect in sump
Pipe (3) sealed set suitable for reading has upper lid (3-1), has vacuum orifice (a) and drainpipe outlet (b) on upper lid, drainpipe draws
Outlet (b) is connected by pipeline (m) with the immersible pump (2-1) in sump under casing (2)；
Step 2：One layer of geotechnological non-woven fabrics (4) is laid on working cushion layer (1), and sump adapter (3) is passed through geotechnological nonwoven
The reserved sleeve (5) of cloth；
Step 3：Three-dimensional composite drainage network (6) is laid on geotechnological non-woven fabrics (4), in the trailing edge slot of three-dimensional composite drainage network
Filled with sand body, and the sleeve (7) for making sump adapter (3) pass through three-dimensional composite drainage network (6) to reserve；
Step 4：One layer of geomembrane bag (8) is laid on three-dimensional composite drainage network (6), then into first layer geomembrane bag (8)
Fill first layer muck soil (9)；The immersible pump (2-1) opened simultaneously in vacuum sump carries out draining, treats first layer mud
(9) after consolidation forms some strength, then repeat step three and step 4, continue new one layer three-dimensional composite drainage network laying
Laid with geomembrane bag, and fill muck soil, until constructing to default top mark eminence；
Step 5：Layer of sand (11) is laid on top geomembrane bag, then sets vertical plastic draining board (12), plastic draining
Plate bottom is deeply buried in layer of sand (11) to reclaimed ground layer, plastic draining board (12) wrench；
Step 6：The laying diaphragm seal (10) on layer of sand (11), diaphragm seal (10) edge embedded soil body,
Step 7：Non-woven fabrics overcoat is laid on diaphragm seal (10), mountain skin soil structure layer (13) is laid on non-woven fabrics overcoat, leads to
Crossing non-woven fabrics overcoat avoids mountain skin soil structure from being laminated sealer of decoding；
Step 8：Successively lay preloading load (14) on mountain skin soil structure layer (13), and by the vacuum orifice of vacuum sump
(a) vavuum pump is connected, is vacuumized and draining；By preloading load (14) removal after deformation condition meets engineering demand, stop
Only vacuum sump vacuumizes and draining；
Step 9：Take out vacuum sump and backfill wellhole, slope shoulder (15) is built in construction by laying bricks or stones on mountain skin soil structure layer (13), and is applied
Work sub-surface (16) and top course (17), road structure are completed.
2. a kind of subgrade strengthening structure that the construction method that road is built on soft soil foundation described in claim 1 is formed, its
It is characterised by：Working cushion layer is laid on former mud face, is equipped with the film bag that multilayer is filled with muck soil on working cushion layer successively
Layer, and three-dimensional composite drainage network is provided between each film bag layer, sand body is filled with the trailing edge slot of three-dimensional composite drainage network；
Layer of sand is laid on the film bag layer of top, has set vertical plastic draining board below layer of sand, plastic draining board bottom is deeply extremely
Reclaimed ground layer, plastic draining board (12) wrench are buried in layer of sand (11)；In film bag layer, three-dimensional composite drainage network, layer of sand
(11) vacuum sump is vertically arranged with；It is equipped with diaphragm seal (10) on layer of sand (11), diaphragm seal (10) edge embedded soil body,
Non-woven fabrics overcoat is laid on diaphragm seal (10), mountain skin soil structure layer (13), mountain skin soil structure layer are laid on non-woven fabrics overcoat
Upper laying preloading load layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710477890.9A CN107338711A (en) | 2017-06-20 | 2017-06-20 | A kind of construction method that road is built on soft soil foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710477890.9A CN107338711A (en) | 2017-06-20 | 2017-06-20 | A kind of construction method that road is built on soft soil foundation |
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| CN107338711A true CN107338711A (en) | 2017-11-10 |
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| CN201710477890.9A Pending CN107338711A (en) | 2017-06-20 | 2017-06-20 | A kind of construction method that road is built on soft soil foundation |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158932A (en) * | 1997-03-07 | 1997-09-10 | 天津市水利科学研究所 | Low-vacuum prepressurizing process for reinforcing and raising soft soil foundation |
| CN101235634A (en) * | 2007-01-30 | 2008-08-06 | 南京理工大学 | Bidirectional vacuum prepressing blowing filling soft soil foundation treatment method |
| CN101270571A (en) * | 2007-03-20 | 2008-09-24 | 张伯谦 | Reinforcing method for demixing sole weight, prepressing water discharge concretion combination dynamic consolidation soft ground base |
| CN101701442A (en) * | 2009-11-04 | 2010-05-05 | 天津大学 | Method for building road by pressing and silting large-scale silt sand on thick hydraulic filler |
| CN103031834A (en) * | 2011-10-09 | 2013-04-10 | 徐云童 | Low-position vacuum preloading rapid reinforcement method of soft foundation in hydraulic filling and reclamation |
| CN104110024A (en) * | 2013-04-18 | 2014-10-22 | 中交上海航道勘察设计研究院有限公司 | Drainage consolidation method for reinforcement treatment of hydraulic filling soft clay |
| CN104120710A (en) * | 2014-06-13 | 2014-10-29 | 宁波高新区围海工程技术开发有限公司 | Soft foundation reinforcing processing method of vacuum preloading combined hydraulic reclamation mud |
-
2017
- 2017-06-20 CN CN201710477890.9A patent/CN107338711A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158932A (en) * | 1997-03-07 | 1997-09-10 | 天津市水利科学研究所 | Low-vacuum prepressurizing process for reinforcing and raising soft soil foundation |
| CN101235634A (en) * | 2007-01-30 | 2008-08-06 | 南京理工大学 | Bidirectional vacuum prepressing blowing filling soft soil foundation treatment method |
| CN101270571A (en) * | 2007-03-20 | 2008-09-24 | 张伯谦 | Reinforcing method for demixing sole weight, prepressing water discharge concretion combination dynamic consolidation soft ground base |
| CN101701442A (en) * | 2009-11-04 | 2010-05-05 | 天津大学 | Method for building road by pressing and silting large-scale silt sand on thick hydraulic filler |
| CN103031834A (en) * | 2011-10-09 | 2013-04-10 | 徐云童 | Low-position vacuum preloading rapid reinforcement method of soft foundation in hydraulic filling and reclamation |
| CN104110024A (en) * | 2013-04-18 | 2014-10-22 | 中交上海航道勘察设计研究院有限公司 | Drainage consolidation method for reinforcement treatment of hydraulic filling soft clay |
| CN104120710A (en) * | 2014-06-13 | 2014-10-29 | 宁波高新区围海工程技术开发有限公司 | Soft foundation reinforcing processing method of vacuum preloading combined hydraulic reclamation mud |
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