CN111441207B - Soft foundation treatment split type guest grid replacing and filling structure and construction method - Google Patents
Soft foundation treatment split type guest grid replacing and filling structure and construction method Download PDFInfo
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- CN111441207B CN111441207B CN202010264977.XA CN202010264977A CN111441207B CN 111441207 B CN111441207 B CN 111441207B CN 202010264977 A CN202010264977 A CN 202010264977A CN 111441207 B CN111441207 B CN 111441207B
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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
- E01C3/00—Foundations for pavings
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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
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0084—Geogrids
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention relates to a soft foundation treatment assembled guest grid replacing and filling structure and a construction method, wherein a guest grid structure body is laid after soft foundation section clearing and field leveling, the guest grid structure body is connected in a mode that outward extending reinforcing steel bars of front and back and left and right components are inserted into studs of a top surface component and a bottom surface component, the top surface and the bottom surface of the guest grid are connected in a mode that the outward extending reinforcing steel bars of one side of one top surface component and one side of the bottom surface component are inserted into studs of the other top surface component and the other side of the bottom surface component, a cuboid mold is arranged in a unit area of the guest grid structure body and used for backfilling and filling materials, the mold is taken out after backfilling is finished, the top component of the guest grid structure body is covered, and the guest grid structure body is formed, and the upper part of the soft foundation treatment assembled guest grid. The soft foundation treatment structure forms a manual filling layer with high tensile strength and good integrity on the surface layer of the soft soil, so that not only can the subgrade settlement be effectively reduced and the subgrade stability be improved, but also the construction cost can be saved, the construction progress can be accelerated, the environment can be protected, and good economic and technical benefits can be achieved.
Description
Technical Field
The invention relates to a soft foundation treatment filling structure and a construction method, in particular to a soft foundation treatment split type guest grid filling structure and a construction method, which can expand the application range of soft foundation filling, can greatly improve the integrity and tensile strength of filling materials, and are particularly suitable for soft soil engineering with the thickness of 3-6 m.
Background
The highway construction can not avoid meeting soft soil subgrade, if the treatment is improper, great harm can be brought to traffic engineering, and the disease types such as subgrade instability, overlarge settlement and the like are mainly adopted. The current regulations stipulate that the soft soil with the thickness less than 3 m adopts a replacement method for shallow soft foundations, and the soft foundations with the thickness more than 3 m adopt a deep treatment method, such as a deep compaction method, a drainage consolidation method, a chemical consolidation method and the like. However, due to the restrictions of environmental protection and economic factors, on the one hand, the non-viscous discrete filling materials such as sand, gravel, pebble, broken stone, and rubble on the other hand slip to both sides of the roadbed under the action of filling load to cause larger settlement of the roadbed, and shear uplift often occurs at a certain distance from the side surface of the embankment, which restricts the application of the filling treatment method in the engineering field, and often a deep soft soil treatment method is adopted to cause engineering waste.
Therefore, aiming at the defects of the existing soft foundation replacement and filling treatment technology, the invention of the soft foundation replacement and filling structure and the construction method which have high construction efficiency and wide application range and can control the stability and the settlement of the roadbed is urgently needed.
Disclosure of Invention
The invention aims to provide a safe, environment-friendly and economic soft foundation treatment replacement structure and a construction method. The structure not only can effectively improve the stability of the roadbed and control the transverse deformation to reduce the settlement of the embankment, but also can expand the application range of soft foundation replacement and filling treatment.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a soft foundation treatment assembled guest grid replacing and filling structure comprises a guest grid structure top and bottom assembling component with studs, a guest grid structure left-right component, a guest grid structure front-back component, a backfilling and filling material, a steel rectangular frame mold with lifting lugs and a cushion layer;
the guest grid structure is formed by assembling components, a steel rectangular frame mold with a lifting lug is arranged in each structure unit area, filling materials are filled in the steel rectangular frame mold with the lifting lug, and after leveling and compacting, the steel rectangular frame mold with the lifting lug is taken out by adopting a crane; adding a guest grid structural body top component to the top of the guest grid structural body; and backfilling a gravel cushion layer on the top of the compacted Bingge grid structure body, and sequentially constructing to the top of the pavement.
The invention also provides a construction method of the soft foundation treatment assembled guest grid replacement structure, which mainly comprises the following steps:
1) construction preparation: setting out according to a construction drawing, marking out a soft soil treatment area, and removing surface water;
2) removing the fluid sludge and the planting soil on the surface layer of the soft foundation, and leveling the field;
3) taking out the binge net structural body components, assembling the structural body bottom components with the studs according to the transverse size of the field in a mode that the external extending reinforcing steel bar at the left side of one bottom component is inserted into the stud at the right side wall of the other bottom component, then the front and rear components at the left side of the outer edge of the Bingge grid structure body and the left and right components at the rear side of the outer edge of the Bingge grid structure body are assembled in a mode that reinforcing steel bars extending outwards from the lower side are inserted into the vertical studs corresponding to the bottom component, the front and rear components inside the Bingge grid structure body are assembled in a mode that the reinforcing steel bars extending outwards from the lower side are inserted into the vertical studs corresponding to the bottom component from left to right, after the front and rear components inside the Bingge grid structure body are, assembling left and right components inside the Bingge grid structure body from back to front in the same way, and finally assembling the left and right components on the front side of the outer edge of the Bingge grid structure body and the front and back components on the right side with the components at the bottom of the Bingge grid structure body to obtain a uncovered Bingge grid structure body;
4) manufacturing a die with lifting lugs arranged above four corners and only side walls without top surfaces and bottom surfaces, wherein the plane size of the die is 1-2 cm smaller than the unit area of the assembled bingo grid structure body, and the height of the die is the same as that of the bingo grid structure body;
5) connecting the lifting lugs by using a crane lifting hook to place the mold inside the unit area of the Bingge grid structure body;
6) and after the filling material with larger particle size is poured to the bottom and the outer side area of the structural unit area of the guest grid by using a forklift, the rest part of the structural unit area is filled with the construction waste with smaller particle size, and the construction waste is lifted out of the mold after being leveled and rolled. The backfill material can be construction waste, pebbles, rubbles, etc.
7) Assembling the structural body top component with the studs in a mode that an overhanging reinforcing steel bar on the left side of one top component is inserted into a stud on the right side wall of the other top component according to the transverse size of a field, and then assembling the structural body top component with the existing uncovered guest grid structural body to finally assemble a closed guest grid structural body;
8) and sequentially filling a 20 cm-thick gravel cushion layer, the lower part of the embankment, the upper part of the embankment, the bottom layer of the foundation bed and the surface layer of the foundation bed.
The invention has the beneficial effects that:
the soft foundation treatment structure forms a manual filling layer with high tensile strength and good integrity on the surface layer of the soft soil, so that not only can the subgrade settlement be effectively reduced and the subgrade stability be improved, but also the construction cost can be saved, the construction progress can be accelerated, the environment can be protected, and good economic and technical benefits can be achieved.
Drawings
FIG. 1 is a cross-sectional view of an assembled binge grid structure body for processing a soft soil roadbed;
FIG. 2 is a schematic view of a construction member of a split type binge grid
FIG. 3 is a schematic view of a Bingge mesh structure assembly;
FIG. 4 is a diagram of a mold for filling a packing material into a binge structure during construction;
in the figure:
1. a surface layer of the foundation bed; 2. a bed bottom layer; 3. the upper part of the embankment; 4. the lower part of the embankment; 5. a cushion layer; 6. a guest-grid structure; 7. replacing the filling material; 8. soft soil foundation; 9. a binge structure body outer edge front and rear component; 10. a front and rear member inside the binge structure body; 11. a left-right component at the outer edge of the binge structure body; 12. a left-right component inside the binge structure body; 13. a binge structure bottom member with studs; 14. a binge structural body top member with studs; 15. a vertical stud; 16. a sidewall stud; 17. lifting lugs; 18. a steel rectangular frame die.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Fig. 1 is a cross section diagram of soft soil roadbed processed by the assembled binge grid structure, which sequentially comprises a foundation bed surface layer 1, a foundation bed bottom layer 2, an upper part 3 of an embankment, a lower part 4 of the embankment, a cushion layer 5, a binge grid structure 6, a filling material 7 and a soft soil foundation 8 from top to bottom.
Fig. 2 and 3 are respectively a schematic diagram of a spliced binge grid structure component and a schematic diagram of the assembly of the binge grid structure, and the binge grid structure comprises a binge grid structure outer edge front and back component 9, a binge grid structure inner front and back component 10, a binge grid structure outer edge left and right component 11, a binge grid structure inner left and right component 12, a binge grid structure bottom component 13 with studs, a binge grid structure top component 14 with studs, vertical studs 15 and side wall studs 16.
FIG. 4 is a diagram of a mold for filling a packing material into a binge structure during construction; the device comprises a lifting lug 17 and a steel rectangular frame die 18.
The guest grid structure is formed by assembling components, a steel rectangular frame mold with a lifting lug is arranged in each structure unit area, filling materials are filled in the steel rectangular frame mold with the lifting lug, and after leveling and compacting, the steel rectangular frame mold with the lifting lug is taken out by adopting a crane; adding a guest grid structural body top component to the top of the guest grid structural body; and backfilling a gravel cushion layer on the top of the compacted Bingge grid structure body, and sequentially constructing to the top of the pavement.
Removing the sludge and the planting soil in the fluid state on the surface layer of the soft foundation, and leveling the field without obvious fluctuation;
taking out the components of the Bingge grid structure body, assembling the bottom component 13 of the structure body with the studs according to the transverse size of a field in a mode that a left side overhanging reinforcing steel bar of one bottom component is inserted into a right side wall stud 16 of the other bottom component, then assembling the left side front and back component 9 of the outer edge of the Bingge grid structure body and a left and right side overhanging reinforcing steel bar below the rear side left and right component 11 of the outer edge of the Bingge grid structure body into a mode that the bottom component corresponds to a vertical stud 15, assembling the left and right components 12 inside the Bingge grid structure body in the same mode from back to front after the internal front and back components 10 are completely assembled, and finally assembling the front side left and right component 11 of the outer edge of the Bingge grid structure body and the right front and back component 9 of the right side front and back component 9 with the bottom component 13 of the Bingge grid structure body, obtaining a uncovered binge structure body; referring to FIG. 3, the binge structural body member may be manufactured by a specialized manufacturer.
And (3) manufacturing a die with lifting lugs arranged above the four corners and only side walls without top surfaces and bottom surfaces, wherein the plane size of the die is smaller than the unit area of the assembled Bingge grid structure by 1-2 cm, the height of the die is the same as that of the Bingge grid structure, and the lifting lugs are used for placing the die into and taking the die out of the Bingge grid structure, as shown in figure 4.
At first, utilize loop wheel machine lifting hook to connect the lug and put into bin grid structure unit regional inboard with the mould, mould quantity is generally no less than 6, does benefit to developing of working face, and the mould lateral wall has certain thickness, prevents to trade to fill the material and emptys the in-process and destroys bin grid box with a net lateral wall.
And pouring the filling material with larger particle size to the bottom and the outer side area of the structural unit area of the guest grid net by using a forklift, then backfilling the rest part of the structural unit area with the construction waste with smaller particle size, leveling and rolling, and then taking out the mold. The backfill material can be construction waste, pebbles, rubbles, etc.
The structural body top component 14 with the studs is assembled in a mode that the external extending reinforcing steel bars on the left side of one top component are inserted into the studs on the right side wall of the other top component according to the transverse size of a field, then the structural body top component is assembled with the existing uncovered binge grid structural body, and finally the closed binge grid structural body is assembled, wherein the view is shown in figure 3.
And in the same way, sequentially laying the binge grid structure body along the route direction until the soft soil foundation road section is processed.
And (3) sequentially filling a 20cm cushion layer, the lower part of the embankment, the upper part of the embankment, the bottom layer of the foundation bed and the surface layer of the foundation bed, wherein the cushion layer can be made of materials such as lime soil, coal slag soil, slag and the like, and the cross section of the treated roadbed is shown in figure 1.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The utility model provides a soft base is handled pin-connected panel guest graticule mesh and is traded and fill structure which characterized in that: the device comprises a top component and a bottom component of a Bingge grid structure body with studs, left and right components, front and back components of the Bingge grid structure body, backfilling and filling materials, a steel rectangular frame mold with lifting lugs and a cushion layer;
the guest grid structure is formed by assembling a bottom component, a left-right component and a front-back component, a steel rectangular frame mold with a lifting lug is arranged in each structure unit area, filling materials are filled in the steel rectangular frame mold with the lifting lug, and after leveling and compacting, the steel rectangular frame mold with the lifting lug is taken out by adopting a crane; adding a guest grid structural body top component to the top of the guest grid structural body; and backfilling a gravel cushion layer on the top of the compacted Bingge grid structure body, and sequentially constructing to the top of the pavement.
2. A construction method of the soft foundation processed guest grid replacement structure as claimed in claim 1, the construction method mainly comprising the steps of:
1) construction preparation: setting out according to a construction drawing, marking out a soft soil treatment area, and removing surface water;
2) removing the fluid sludge and the planting soil on the surface layer of the soft foundation, and leveling the field;
3) taking out the binge net structural body components, assembling the structural body bottom components with the studs according to the transverse size of the field in a mode that the external extending reinforcing steel bar at the left side of one bottom component is inserted into the stud at the right side wall of the other bottom component, then the front and rear components at the left side of the outer edge of the Bingge grid structure body and the left and right components at the rear side of the outer edge of the Bingge grid structure body are assembled in a mode that reinforcing steel bars extending outwards from the lower side are inserted into the vertical studs corresponding to the bottom component, the front and rear components inside the Bingge grid structure body are assembled in a mode that the reinforcing steel bars extending outwards from the lower side are inserted into the vertical studs corresponding to the bottom component from left to right, after the front and rear components inside the Bingge grid structure body are, assembling left and right components inside the Bingge grid structure body from back to front in the same way, and finally assembling the left and right components on the front side of the outer edge of the Bingge grid structure body and the front and back components on the right side with the components at the bottom of the Bingge grid structure body to obtain a uncovered Bingge grid structure body;
4) lifting lugs are arranged above four corners of the manufactured die, only the side walls are provided with top surfaces and bottom surfaces, the plane size of the die is 1-2 cm smaller than the unit area of the assembled bingo grid structure, and the height of the die is the same as that of the bingo grid structure;
5) connecting the lifting lugs by using a crane lifting hook to place the mold inside the unit area of the Bingge grid structure body;
6) pouring the filling material with larger particle size to the bottom and the outer side area of the structural unit area of the guest grid net by using a forklift, filling the rest part of the structural unit area with construction waste with smaller particle size, leveling and rolling, and then taking out the mold, wherein the filling material is construction waste, pebbles or rubbles;
7) assembling the structural body top component with the studs in a mode that an overhanging reinforcing steel bar on the left side of one top component is inserted into a stud on the right side wall of the other top component according to the transverse size of a field, and then assembling the structural body top component with the existing uncovered guest grid structural body to finally assemble a closed guest grid structural body;
8) and sequentially filling a 20 cm-thick gravel cushion layer, the lower part of the embankment, the upper part of the embankment, the bottom layer of the foundation bed and the surface layer of the foundation bed.
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| CN202010264977.XA CN111441207B (en) | 2020-04-07 | 2020-04-07 | Soft foundation treatment split type guest grid replacing and filling structure and construction method |
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| CN202010264977.XA CN111441207B (en) | 2020-04-07 | 2020-04-07 | Soft foundation treatment split type guest grid replacing and filling structure and construction method |
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| CN111441207B true CN111441207B (en) | 2021-06-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| AU2002241226A1 (en) * | 2002-03-20 | 2003-09-29 | Joshua Mesinger | A method for creating an infrastructure |
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2020
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| JP2009287165A (en) * | 2006-09-07 | 2009-12-10 | Futoshi Nomoto | Sandbag guide frame and sandbag construction method using the same |
| CN101509220A (en) * | 2009-01-15 | 2009-08-19 | 北京四方如钢混凝土制品有限公司 | Module subgrade case and special module thereof |
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