CN107700632B - The construction method of heat preservation infiltration combined type underdrain - Google Patents
The construction method of heat preservation infiltration combined type underdrain Download PDFInfo
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- CN107700632B CN107700632B CN201710892412.4A CN201710892412A CN107700632B CN 107700632 B CN107700632 B CN 107700632B CN 201710892412 A CN201710892412 A CN 201710892412A CN 107700632 B CN107700632 B CN 107700632B
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
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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
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
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Abstract
The invention discloses the construction methods of heat preservation infiltration combined type underdrain, include the following steps: 1) sewer excavation of foundation pit；2) mattress layer is laid with；3) concrete pedestal is constructed；4) presser feet body construction；5) soakaway trench installation with holes；6) gate skeleton is installed；7) the permeable bed course installation in side；8) pipe cushion construction is covered；9) metalling is constructed；10) medium-sand seam is constructed；11) backfill is constructed；12) insulation board is installed；13) soil layer that bears down on one construction, it is simple and easy, and obtained heat preservation infiltration combined type underdrain independence is strong, reliable in quality, has many advantages, such as that infiltration is high-efficient, heat insulation effect is good to alpine meadow region, has preferable economic technology benefit, be suitable for popularization and application.
Description
Technical field
The invention belongs to construction engineering technical fields, and in particular to the construction method of heat preservation infiltration combined type underdrain.
Background technique
In extremely frigid zones roadbed construction, underground water is to influence a stable key factor of subgrade engineering.Roadbed soil layer
Water content size, water content distribution and ambient temperature transformation, be influence extremely frigid zones subgrade stability principal element, on the one hand
The infiltration and corrosion function of underground water can be such that foundation strength reduces, compressibility increases, the freezing of underground water in another aspect roadbed,
Thawing can make roadbed unevenly lift, sink, and so roadbed can for a long time be deformed and crack, influences roadbed quality.
Using underdrain satisfy the need base be lauched carry out cut, row processing be punish extremely frigid zones roadbed underground water effective measures,
This method can alleviate destruction of the underground water to subgrade stability, but traditional underdrain has the following deficiencies: the entirety of underdrain structure
Property it is poor, be not fixed firmly with soil layer, backfill construction when underdrain structure easily slide or occur the phase between underdrain internal structure
To dislocation；The permeable bed course orthostatic in side is poor, leads to constructional difficulties.
Summary of the invention
The object of the present invention is to provide the construction methods of heat preservation infiltration combined type underdrain, and construction method is simple and easy,
Obtained heat preservation infiltration combined type underdrain reliable in quality, has many advantages, such as that infiltration is high-efficient, heat insulation effect is good to alpine meadow region,
With preferable economic technology benefit, it is suitable for popularization and application.
To realize the above-mentioned technical purpose, major technique solution of the invention is to provide heat preservation infiltration combined type underdrain
Construction method includes the following steps:
1) sewer excavation of foundation pit: according to unwrapping wire and level control point excavation pit, and manual type is taken to carry out crater wall
It repairs straight along repairing；
2) mattress layer is laid with: bottom of foundation ditch is laid with mattress layer, and mattress layer uses graded sand and stone；
3) concrete pedestal is constructed: concrete pedestal is laid on mattress layer top, and deformation joint is arranged in concrete pedestal,
Reserved rim of a cup is arranged in concrete pedestal, reserves and reserved vertical bar is arranged in rim of a cup；
4) presser feet body construction: pad body is set in concrete pedestal two sides, to limit its displacement；
5) soakaway trench installation with holes: soakaway trench with holes is installed on concrete pedestal top, and the two sides of soakaway trench with holes are spaced
Limit plate is set；
6) gate skeleton is installed: multiple gate skeletons by being equipped at intervals with along foundation pit length direction being arranged on concrete pedestal
The two side ends bottom of the cast skeleton of composition, multiple gate skeletons is respectively provided with a suspension column, by the suspension column of two sides in cast skeleton point
It is not mounted in two reserved rims of a cup, suspension column is respectively provided with horizontal frame linking, and horizontal frame linking and reserved vertical bar are connected and fixed, then existed
Recharge concrete is poured in reserved rim of a cup；
7) the permeable bed course installation in side: it is respectively provided with linked network end in the two side ends of gate skeleton, linked network hangs grid on end
Net chamber, the permeable geotechnological cloth bag of the intracavitary setting filling medium coarse sand of grid net, that is, form the permeable bed course in side；
8) pipe cushion construction is covered；Pipe pad layer is covered in concrete pedestal top, the permeable mat layer inside laying in side；
9) metalling is constructed: covering pipe pad layer top, the permeable mat layer inside laying metalling in side；
10) medium-sand seam is constructed: being laid with medium-sand seam in metalling top, the permeable mat layer inside in side；
11) backfill is constructed: being constructed and is completed to above structure, backfill is filled in foundation pit；
12) insulation board is installed: insulation board is installed on medium-sand seam top, and makes insulation board and gate skeleton by fixing piece
Upper end is connected and fixed；
13) soil layer that bears down on one construction: insulation board top is laid with the soil layer that bears down on one, and further fills backfill.
Concrete pedestal is prefabricated or cast-in-place in the step 3), and concrete pedestal is fixed by soil nailing and mattress layer.
Soakaway trench with holes is connected in the deformation joint of concrete pedestal using flexible joint in the step 5).
Gate skeleton is cast-in-place Integratde concrete struction or monoblock type (separate type) precast concrete in the step 6)
Structure or antiseptic and rustproof fashioned iron.
The surrounding at the linked network end of gate skeleton and bottom are respectively mounted grid and form the lattice with inner cavity in the step 7)
Grid bag, several permeable geotechnological cloth bags filled with medium coarse sand of the interior setting of grid bag, then installs lattice in the opening of grid bag
Aperture plate is closed, and complete grille network net chamber is formed.
The step 7), step 8), step 9) intersection synchronous with step 10) carry out.
It seeps water combined type underdrain structure, including foundation pit the invention also discloses the finally formed heat preservation of above-mentioned construction method,
Mattress layer, concrete pedestal and cast skeleton are sequentially connected in foundation pit from top to bottom, cast skeleton includes along foundation pit length side
To the multiple gate skeletons being equipped at intervals with, concrete pedestal is equipped with soakaway trench with holes, and gate skeleton two side ends are equipped with side
Permeable bed course is arranged in sequence in cast skeleton from top to bottom and covers pipe pad layer, metalling, medium-sand seam, insulation board and the soil layer that bears down on one,
It fills in foundation pit by backfill.
The permeable bed course in side includes the linked network end that the two side ends of gate skeleton are equipped with, and linked network hangs with grid on end
Net chamber, the intracavitary permeable geotechnological cloth bag for being equipped with filling medium coarse sand of grid net.
The concrete pedestal is equipped with reserved rim of a cup, reserves and is equipped with reserved vertical bar, the two side ends bottom of gate skeleton in rim of a cup
Portion is respectively connected with suspension column, and suspension column is equipped with horizontal frame linking, and horizontal frame linking is connected and fixed with reserved vertical bar, has poured in reserved rim of a cup
Recharge concrete.
The concrete pedestal is fixed by soil nailing and mattress layer, and concrete pedestal two sides are equipped with pad body for limiting it
Displacement, the insulation board are connect by fixing piece with gate skeleton.
The soakaway trench two sides with holes are equipped at intervals with limit plate, are used for fixed belt hole soakaway trench.
Invention the utility model has the advantages that
(1) formation entirety is quickly connect with concrete pedestal by gate skeleton, soil nailing fixing concrete pedestal enhances
The globality of structure；
(2) by installing grid net chamber on gate skeleton, the intracavitary installation of grid net is filled with the permeable soil of medium coarse sand
Work cloth bag, the permeable bed course in the side of formation have stronger upright row；
(3) construction method is simple and easy, and obtained heat preservation infiltration combined type underdrain reliable in quality has alpine meadow region
It seeps water the advantages that high-efficient, heat insulation effect is good, there is preferable economic technology benefit, be suitable for popularization and application.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of heat preservation infiltration combined type underdrain；
Fig. 2 is the schematic diagram of the part main member of heat preservation infiltration combined type underdrain；
Fig. 3 is construction flow chart；
In figure: 1. mattress layers；2. concrete pedestal；3. soil nailing；4. reserved vertical bar；5. pad body；6. reserved rim of a cup；7. band
Hole soakaway trench；8. limit plate；9. gate skeleton；10. horizontal frame linking；11. linked network end；12. recharge concrete；13. grid net
Chamber；14. permeable geotechnique's cloth bag；15. the permeable bed course in side；16. covering pipe pad layer；17. metalling；18. medium-sand seam；19. heat preservation
Plate；20. fixing piece；21. bear down on one soil layer；22. backfill.
Specific embodiment
It elaborates below in conjunction with Figure of description to a specific embodiment of the invention, but protection scope of the present invention
It is not limited to this:
As depicted in figs. 1 and 2, the present invention keeps the temperature the construction method of infiltration combined type underdrain, includes the following steps:
1) sewer excavation of foundation pit: according to unwrapping wire and level control point excavation pit, and manual type is taken to carry out crater wall
It repairs straight along repairing；
2) mattress layer 1 is laid with: bottom of foundation ditch is laid with mattress layer 1, and mattress layer 1 uses graded sand and stone；
3) concrete pedestal 2 is constructed: concrete pedestal 2 is laid on 1 top of mattress layer, and is arranged in concrete pedestal 2 and becomes
Reserved rim of a cup 6 is arranged in shape seam, concrete pedestal 2, reserves and reserved vertical bar 4 is arranged in rim of a cup 6；
4) pad body 5 is constructed: pad body 5 is arranged in 2 two sides of concrete pedestal, to limit its displacement；
5) soakaway trench 7 with holes is installed: soakaway trench 7 with holes is installed on 2 top of concrete pedestal, and the two sides of soakaway trench 7 with holes are equal
Interval setting limit plate 8；
6) gate skeleton 9 is installed: multiple gate bones by being equipped at intervals with along foundation pit length direction being arranged on concrete pedestal 2
The cast skeleton that frame 9 is constituted, the two side ends bottom of multiple gate skeletons is respectively provided with a suspension column, by the suspension column of two sides in cast skeleton
It is separately mounted in two reserved rims of a cup 6, suspension column is respectively provided with horizontal frame linking 10, and horizontal frame linking 10 is connect admittedly with reserved vertical bar 4
It is fixed, then recharge concrete 12 is poured in reserved rim of a cup 6；
7) the permeable bed course 15 in side is installed: being respectively provided with linked network end 11 in the two side ends of gate skeleton 9, is hung on linked network end 11
Grid net chamber 13, the permeable geotechnological cloth bag 14 of the interior setting filling medium coarse sand of grid net chamber 13, that is, form the permeable bed course in side
15；
8) construction of pipe pad layer 16 is covered；It is laid on the inside of 2 top of concrete pedestal, the permeable bed course 15 in side and covers pipe pad layer 16；
9) metalling 17 is constructed: being covered 16 top of pipe pad layer, is being laid with metalling 17 on the inside of the permeable bed course 15 in side；
10) medium-sand seam 18 is constructed: medium-sand seam 18 is laid on the inside of 17 top of metalling, the permeable bed course 15 in side；
11) backfill 22 is constructed: being constructed and is completed to above structure, backfill 22 is filled in foundation pit；
12) insulation board 19 is installed: insulation board is installed on 18 top of medium-sand seam, and makes insulation board and gate by fixing piece 20
The upper end of skeleton 9 is connected and fixed；
13) soil layer 21 that bears down on one construction: 19 top of insulation board is laid with the soil layer that bears down on one, and further fills backfill 22.
Concrete pedestal 2 is prefabricated or cast-in-place in the step 3), and concrete pedestal 2 is solid by soil nailing 3 and mattress layer 1
It is fixed.
Soakaway trench 7 with holes is connected in the deformation joint of concrete pedestal 2 using flexible joint in the step 5).
Gate skeleton 9 is cast-in-place Integratde concrete struction or monoblock type (separate type) concrete in the step 6)
Soil structure or antiseptic and rustproof fashioned iron.
The surrounding at the linked network end 11 of gate skeleton 9 and bottom, which are respectively mounted grid and are formed, in the step 7) has inner cavity
Grid bag, several permeable geotechnological cloth bags 14 filled with medium coarse sand of the interior setting of grid bag, then pacifies in the opening of grid bag
Grate net is closed, and complete grille network net chamber 13 is formed.
The step 7), step 8), step 9) intersection synchronous with step 10) carry out.
It seeps water combined type underdrain structure, including foundation pit the invention also discloses the finally formed heat preservation of above-mentioned construction method,
Mattress layer 1, concrete pedestal 2 and cast skeleton are sequentially connected in foundation pit from top to bottom, cast skeleton includes along foundation pit length
Multiple gate skeletons 9 that direction is equipped at intervals with, concrete pedestal 2 are equipped with soakaway trench 7 with holes, and 9 two side ends of gate skeleton are all provided with
There is the permeable bed course 15 in side, is arranged in sequence from top to bottom in cast skeleton and covers pipe pad layer 16, metalling 17, medium-sand seam 18, protect
Warm plate 19 and the soil layer 21 that bears down on one, are filled in foundation pit by backfill 22.
The permeable bed course 15 in side includes the linked network end 11 that the two side ends of gate skeleton 9 are equipped with, and is hung on linked network end 11
There is grid net chamber 13, the permeable geotechnological cloth bag 14 of filling medium coarse sand is equipped in grid net chamber 13.
The concrete pedestal 2 is equipped with reserved rim of a cup 6, reserves and is equipped with reserved vertical bar 4, the two sides of gate skeleton 9 in rim of a cup 6
End bottom is respectively connected with suspension column, and suspension column is equipped with horizontal frame linking 10, and horizontal frame linking 10 is connected and fixed with reserved vertical bar 4, reserves cup
Recharge concrete 12 has been poured in mouth 6.
The concrete pedestal 2 is fixed by soil nailing 3 and mattress layer 1, and 2 two sides of concrete pedestal are equipped with pad body 5 and are used for
Its displacement is limited, the insulation board 19 is connect by fixing piece 20 with gate skeleton 9.
7 two sides of soakaway trench with holes are equipped at intervals with limit plate 8, are used for fixed belt hole soakaway trench 7.
Claims (6)
1. the construction method of heat preservation infiltration combined type underdrain, which comprises the steps of:
1) sewer excavation of foundation pit: according to unwrapping wire and level control point excavation pit, and it is suitable to take manual type to carry out repairing for crater wall
It repairs straight；
2) mattress layer (1) is laid with: bottom of foundation ditch is laid with mattress layer (1), and mattress layer (1) uses graded sand and stone；
3) concrete pedestal (2) is constructed: concrete pedestal (2) is laid on mattress layer (1) top, and sets in concrete pedestal (2)
Deformation joint is set, reserved rim of a cup (6) are arranged in concrete pedestal (2), reserve and reserved vertical bar (4) are arranged in rim of a cup (6)；
4) presser feet body construction: pad body (5) are set in concrete pedestal (2) two sides, to limit its displacement；
5) soakaway trench (7) installation with holes: concrete pedestal (2) top installation soakaway trench (7) with holes, the two of soakaway trench (7) with holes
Side is spaced setting limit plate (8)；
6) gate skeleton (9) is installed: multiple gate bones by being equipped at intervals with along foundation pit length direction being arranged on concrete pedestal (2)
The cast skeleton that frame (9) is constituted, the two side ends bottom of multiple gate skeletons is respectively provided with a suspension column, by the column of two sides in cast skeleton
Foot is separately mounted in two reserved rims of a cup (6), and suspension column is respectively provided with horizontal frame linking (10), by horizontal frame linking (10) and reserved vertical bar
(4) it is connected and fixed, then pours recharge concrete (12) in reserved rim of a cup (6)；
7) the permeable bed course in side (15) is installed: being respectively provided with linked network end (11) in the two side ends of gate skeleton (9), on linked network end (11)
Grid net chamber (13) is hung, the permeable geotechnological cloth bag (14) of setting filling medium coarse sand, that is, form side in grid net chamber (13)
The permeable bed course in side (15)；
8) pipe pad layer (16) construction is covered；It is laid on the inside of concrete pedestal (2) top, the permeable bed course in side (15) and covers pipe pad layer
(16)；
9) metalling (17) is constructed: being laid with metalling (17) covering pipe pad layer (16) top, the permeable bed course in side (15) inside；
10) medium-sand seam (18) is constructed: medium-sand seam is laid on the inside of metalling (17) top, the permeable bed course in side (15)
(18)；
11) backfill (22) is constructed: being constructed and is completed to above structure, backfill (22) are filled in foundation pit；
12) insulation board (19) is installed: insulation board is installed on medium-sand seam (18) top, and makes insulation board and door by fixing piece (20)
The upper end of type skeleton (9) is connected and fixed；
13) bear down on one soil layer (21) construction: insulation board (19) top, which is laid with, bears down on one soil layer, and further fills backfill (22).
2. the construction method of heat preservation infiltration combined type underdrain according to claim 1, it is characterised in that the step 3) is mixed
Solidifying soil matrix seat (2) be it is prefabricated or cast-in-place, concrete pedestal (2) is fixed by soil nailing (3) and mattress layer (1).
3. the construction method of heat preservation infiltration combined type underdrain according to claim 1, it is characterised in that in the step 5)
Soakaway trench (7) with holes is connected in the deformation joint of concrete pedestal (2) using flexible joint.
4. the construction method of heat preservation infiltration combined type underdrain according to claim 1, it is characterised in that in the step 6)
Gate skeleton (9) is cast-in-place Integratde concrete struction or integrated precast concrete structure or antiseptic and rustproof fashioned iron.
5. the construction method of heat preservation infiltration combined type underdrain according to claim 1, it is characterised in that in the step 7)
The surrounding at the linked network end (11) of gate skeleton (9) and bottom are respectively mounted grid and form the grid bag with inner cavity, in grid bag
Several permeable geotechnological cloth bags (14) filled with medium coarse sand are set, are then sealed in the opening installation grid of grid bag
It closes, forms complete grille network net chamber (13).
6. the construction method of heat preservation infiltration combined type underdrain according to claim 1, it is characterised in that the step 7), step
It is rapid 8), synchronous with the step 10) intersection of step 9) carries out.
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| CN201710892412.4A CN107700632B (en) | 2017-09-27 | 2017-09-27 | The construction method of heat preservation infiltration combined type underdrain |
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| CN201710892412.4A CN107700632B (en) | 2017-09-27 | 2017-09-27 | The construction method of heat preservation infiltration combined type underdrain |
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| CN107700632B true CN107700632B (en) | 2019-05-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020244177A1 (en) * | 2019-06-03 | 2020-12-10 | 广东美景环境科技有限公司 | Roadside tree planting hole structure and construction method therefor |
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| CN107700632A (en) | 2018-02-16 |
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