CN114319458B - Gravity flow prefabricated basement drainage bottom plate and dry-wet combined construction method thereof - Google Patents
Gravity flow prefabricated basement drainage bottom plate and dry-wet combined construction method thereof Download PDFInfo
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- CN114319458B CN114319458B CN202111616144.6A CN202111616144A CN114319458B CN 114319458 B CN114319458 B CN 114319458B CN 202111616144 A CN202111616144 A CN 202111616144A CN 114319458 B CN114319458 B CN 114319458B
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- 238000010276 construction Methods 0.000 title claims abstract description 22
- 230000005484 gravity Effects 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 24
- 239000004575 stone Substances 0.000 claims description 14
- 239000004570 mortar (masonry) Substances 0.000 claims description 11
- 238000001223 reverse osmosis Methods 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 27
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005336 cracking Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- 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
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a self-flowing prefabricated basement drainage bottom plate and a dry-wet combined construction method thereof, wherein the prefabricated basement drainage bottom plate comprises a plurality of drainage bottom plate units I and a plurality of drainage bottom plate units II, and the drainage bottom plate units I, the drainage bottom plate units II and the drainage bottom plate units I and the drainage bottom plate units II are spliced with each other to form a basement drainage bottom plate; the self-flow prefabricated basement drainage bottom plate can drain water in the vertical direction through the drainage groove, can drain water seepage in the horizontal direction through the floor drain on the prefabricated drainage bottom plate, improves the drainage efficiency of the basement, achieves the effect of drainage prevention combination, prolongs the service life of the basement, reduces potential safety hazards, and has good application prospects.
Description
Technical Field
The invention relates to the technical field of basement bottom plate construction, in particular to a self-flowing prefabricated basement drainage bottom plate and a dry-wet combined construction method thereof.
Background
With the development of the building industry, the types and the number of basements are continuously increased. Because cracks generated by expansion and contraction of concrete, improper treatment of the lap joint of waterproof materials, invasion of outdoor water into soil outside the side wall of the basement and different influences of groundwater pressure, water permeation phenomenon occurs on the basement bottom plate, and leakage reasons are mainly concentrated in the following aspects: 1) Cracking of the concrete bottom plate and the side wall caused by uneven settlement of the foundation; 2) When concrete is poured, the vibration is not compact, so that the concrete is honeycomb; 3) Waterproof design, not in place construction, waterproof material does not accord with the standard; 4) The broken stone concrete cushion layer at the upper part of the concrete bottom plate is cracked and hollow to form a water passage so as to cause water channeling. Basement leaks can affect the functional use of the basement structure. Compared with the traditional basement bottom plate waterproof method, the waterproof method is a plugging method, waterproof coiled materials and waterproof paint are easy to age, the problem of water leakage cannot be permanently solved, and leakage of the basement bottom plate and the outer wall is still a difficult problem. In the prior art, although the drainage and blocking combination is considered, the filling non-compaction phenomenon exists in the graded broken stone drainage layer after the construction is finished, and when the basement surface layer bears the load of a vehicle or the soft ground foundation is unevenly settled, the problems of broken stone compaction of the drainage layer, subsidence cracking of the surface layer and the like are easily caused, so that the basement leakage is caused. In view of the problems and shortcomings of the prior art floor drain, there is a need to provide a novel and inventive apparatus and method that overcomes the shortcomings of the prior art.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the self-flow prefabricated basement drainage bottom plate which is reasonable in structural design and quick and convenient to construct and the dry-wet combined construction method thereof.
The technical scheme of the invention is as follows:
the gravity flow prefabricated basement drainage bottom plate comprises a plurality of first drainage bottom plate units and a plurality of second drainage bottom plate units, wherein the first drainage bottom plate units, the second drainage bottom plate units and the first drainage bottom plate units and the second drainage bottom plate units are mutually spliced to form the basement drainage bottom plate.
Further, the first drainage bottom plate unit comprises a unit main body, supporting protrusions and first drainage grooves, the supporting protrusions are arranged on the bottom surface of the unit main body at intervals, the first drainage grooves are formed between two adjacent supporting protrusions on the bottom surface of the unit main body, and the middle portions of the two ends of the unit main body extend outwards to form first lap joint protrusions.
Further, the second drainage bottom plate unit comprises a unit main body, supporting protrusions and a second drainage groove, wherein the supporting protrusions are arranged on the bottom surface of the unit main body at intervals, and the second drainage groove is formed between two adjacent supporting protrusions on the bottom surface of the unit main body; the middle parts of the two ends of the unit main body outwards extend to form a second lap joint protrusion.
Furthermore, sealing rubber strips are respectively arranged between the first drainage bottom plate units, the second drainage bottom plate units and the first and second drainage bottom plate units.
The first overlap joint bulge is in overlap joint with the second overlap joint bulge, and a continuous bending waterproof structure is formed at the joint; the upper surface of the second overlap joint bulge is flush with the upper surface of the drainage bottom plate unit.
Further, a third drainage groove is formed between the first drainage bottom plate unit and the second drainage bottom plate unit below the first overlap joint protrusion, and the third drainage groove is respectively communicated with the first drainage groove and the second drainage groove.
Furthermore, the bottom surfaces of the supporting protrusions of the first drainage bottom plate unit and the second drainage bottom plate unit are provided with at least one strip-shaped groove, so that the binding force between the first drainage bottom plate unit and the binding layer is improved.
Further, the supporting protrusions at the two ends of the first drainage bottom plate unit and the second drainage bottom plate unit are flush with the two end surfaces of the first drainage bottom plate unit and the second drainage bottom plate unit.
And the first drainage bottom plate unit and/or the second drainage bottom plate unit are/is provided with an internal thread sleeve penetrating through the unit main body, and the internal thread sleeve is connected with a reverse seepage floor drain in a threaded manner.
The dry-wet combined construction method of the self-flowing prefabricated basement drainage bottom plate comprises the following steps of:
1) Positioning and paying off: measuring and paying off the prefabricated drainage bottom plate on the original concrete ground of the basement bottom plate, and positioning the specific paving position of the prefabricated drainage bottom plate;
2) Assembling a prefabricated basement drainage bottom plate:
2.1 The first drainage bottom plate unit and the second drainage bottom plate unit are inverted in advance, namely, the surface with the supporting bulge faces upwards; a layer of waterproof mortar which is 8-12mm higher than the bottom surface of the supporting bulge is paved on the supporting bulge;
2.2 The first drainage bottom plate unit and the second drainage bottom plate unit are aligned through hoisting equipment, and are assembled in sequence according to the ground paying-off position;
2.3 The first drainage bottom plate units and the second drainage bottom plate units are aligned and connected with each other through sealing rubber strips; the first drainage bottom plate unit and the second drainage bottom plate unit are in lap joint connection through the first lap joint protrusion and the second lap joint protrusion and are in sealing connection through the sealing rubber strip;
3) Drainage system sets up:
3.1 After the prefabricated basement drainage bottom plate is assembled, arranging a drainage ditch I communicated with the underground water collecting well on the outer side of the prefabricated basement drainage bottom plate;
3.2 A reverse seepage floor drain is arranged on the prefabricated basement drainage bottom plate, and the elevation of the reverse seepage floor drain is adjusted through threads;
3.3 According to the drainage requirement of the basement, a second drainage ditch is reserved in the middle of the drainage bottom plate of the prefabricated basement before the assembly of the drainage bottom plate of the prefabricated basement, and a drainage grate is paved on the second drainage ditch;
4) Basement ground construction: sealing the reverse osmosis floor drain, paving a fine stone concrete layer with the thickness of 25-35mm on a prefabricated basement drainage bottom plate, and finally constructing a self-leveling epoxy resin layer on the fine stone concrete layer; and after the basement floor construction is finished, the top surface of the reverse osmosis floor drain is guaranteed to be level with the self-leveling epoxy resin layer.
The beneficial effects of the invention are as follows:
1) According to the invention, through a dry-wet combination construction method, namely, the bottom of the prefabricated drainage bottom plate is coated with the combination layer of the waterproof mortar, the prefabricated bottom plate of the finished product and the concrete of the basement bottom plate can be combined with each other in high strength, and meanwhile, the preliminary leveling of each prefabricated drainage bottom plate can be carried out through the combination layer, so that the adjacent drainage bottom plates can be connected with each other in high efficiency.
2) The technology comprises a first drainage bottom plate unit and a second drainage bottom plate unit which are prefabricated, the quick installation of the drainage bottom plate of the basement can be realized through the prefabricated drainage bottom plate, the quality of finished products is uniformly ensured, and the construction quality is ensured while the construction efficiency is improved.
3) The prefabricated drainage bottom plate is additionally arranged, the core structural problem is solved through self-flowing drainage, underground water can be discharged through the drainage groove, water seepage on the ground can be discharged through the reverse seepage floor drain on the prefabricated drainage bottom plate, the drainage efficiency of the basement is improved, the effect of 'anti-drainage combination' is achieved, the service life of the basement is prolonged, and the potential safety hazard is reduced.
4) The longitudinal and transverse connecting nodes of each prefabricated drainage bottom plate can realize the effects of high efficiency, water resistance and quick and convenient connection. When being connected in parallel with the direction of bar recess, directly carry out the side concatenation through two prefabricated drainage bottom plates, the waterproof mortar tie layer in its bottom of two prefabricated drainage bottom plates carries out first waterproof, and the joint strip in the middle of the rethread carries out the second waterproof, and last carries out the third waterproof through fine stone concrete through two prefabricated drainage bottom plate upper portion joints. When the direction connection of perpendicular to bar recess, splice through the overlap joint arch, can realize equally that middle joint strip carries out first waterproof, and rethread two prefabricated drainage bottom plate upper portion seams carry out the second waterproof through fine stone concrete.
5) The prefabricated drainage bottom plate adopts the strip-shaped supporting protrusions, is similar to a strip-shaped foundation structure, so that the stress on the upper part of the prefabricated drainage bottom plate can be effectively transferred to the bottom plate concrete, the stress concentration phenomenon is reduced, meanwhile, the fine stone concrete layer with the thickness of 30mm on the upper part of the prefabricated drainage bottom plate can be effectively prevented from cracking at the joint between the prefabricated basement bottom plates, the high-strength combination of prefabrication and cast-in-situ is realized, and the overall safety and the stability are higher.
Drawings
FIG. 1 is an overall top view of the present invention;
FIG. 2 is an end view of the present invention;
FIG. 3 is a schematic view of a drainage mat unit according to the present invention;
FIG. 4 is a schematic view of a drainage floor unit II according to the present invention;
FIG. 5 is a schematic diagram of a first and a second splice of the drainage mat unit of the present invention;
FIG. 6 is an enlarged view of FIG. 5 in accordance with the present invention;
FIG. 7 is a schematic view of a second splice of adjacent drainage mats according to the present invention;
FIG. 8 is an enlarged view of FIG. 7 in accordance with the present invention;
FIG. 9 is a schematic view of the installation structure of the reverse osmosis floor drain of the invention;
in the figure: 1. a drain floor unit I; 2. a second drainage bottom plate unit; 3. a drainage ditch I; 4. reverse osmosis floor drain; 5. a unit main body; 6. a first overlap tab; 7. a first drain tank; 8. a supporting protrusion; 9. a strip-shaped groove; 10. a sealing strip mounting groove; 11. a second overlap tab; 12. original concrete ground; 13. a bonding layer; 14. fine stone concrete layer; 15. self-leveling the epoxy layer; 16. a sealing rubber strip; 17. a lower water collection well; 18. a second drain tank; 19. a third drain tank; 20. and a drainage ditch II.
Detailed Description
The invention is further described below with reference to the drawings.
As shown in fig. 1 to 9, the self-flowing prefabricated basement drainage floor comprises a drainage floor unit 1, a drainage floor unit 2, a drainage ditch 3, a reverse seepage floor drain 4, a unit main body 5, a first lap joint protrusion 6, a first drainage groove 7, a supporting protrusion 8, a strip-shaped groove 9, a sealing strip mounting groove 10, a second lap joint protrusion 11, an original concrete floor 12, a bonding layer 13, a fine stone concrete layer 14, a self-leveling epoxy resin layer 15, a sealing rubber strip 16, a subsurface water collecting well 17, a second drainage groove 18, a third drainage groove 19 and a drainage ditch 20.
The self-flow prefabricated basement drainage bottom plate comprises a plurality of first drainage bottom plate units 1 and a plurality of second drainage bottom plate units 2, wherein end faces between the first drainage bottom plate units 1 are arranged in a face-to-face mode, end faces between the second drainage bottom plate units 2 are arranged in a face-to-face mode, and the first drainage bottom plate units 1 and the second drainage bottom plate units 2 are mutually spliced to form a basement drainage bottom plate integral structure.
The first drainage bottom plate unit 1 comprises a unit main body 5, supporting protrusions 8 and first drainage grooves 7, the supporting protrusions 8 are arranged on the bottom surface of the unit main body 5 at intervals, the first drainage grooves 7 are formed on the bottom surface of the unit main body 5 between two adjacent supporting protrusions 8, the middle portions of the two ends of the unit main body 5 extend outwards to form first lap joint protrusions 6, and the supporting protrusions 8 and the first drainage grooves 7 are arranged on one side where the first lap joint protrusions 6 are located.
The second drainage bottom plate unit 2 comprises a unit main body 5, supporting protrusions 8 and second drainage grooves 18, the supporting protrusions 8 are arranged on the bottom surface of the unit main body 5 at intervals, and the second drainage grooves 18 are formed on the bottom surface of the unit main body 5 between two adjacent supporting protrusions 8; the middle parts of the two ends of the unit main body 5 are outwards extended to form a second overlap joint protrusion 11, and the supporting protrusion 8 and the second drainage groove 18 are arranged on one side of the second overlap joint protrusion 11.
In order to ensure the stability of the basement drainage bottom plate, the bottom surfaces of the supporting protrusions 8 of the first drainage bottom plate unit 1 and the second drainage bottom plate unit 2 are provided with at least one strip-shaped groove 9, so that the supporting protrusions 8 can be connected with the original ground or the leveling ground of the basement through waterproof mortar, and the bottom plate is prevented from shifting.
The supporting bulges 8 at the two ends of the first drainage bottom plate unit 1 and the second drainage bottom plate unit 2 are flush with the end surfaces of the first drainage bottom plate unit 1 and the second drainage bottom plate unit 2. The purpose of this is that two adjacent drainage floor units 1 or two adjacent drainage floor units 2 can be tightly connected through waterproof mortar. The connection between the adjacent first drainage floor units 1 or the adjacent second drainage floor units 2 is realized as shown in fig. 6, and the waterproof effect can be achieved.
In order to avoid water leakage at the joint of the adjacent drainage bottom plate units, when the adjacent drainage bottom plate units 1 and 2 are assembled adjacently, the end surfaces of the drainage bottom plate units 1 and 2 are respectively provided with a sealing strip mounting groove 10 and are sealed by sealing rubber strips 16; when the first drainage bottom plate unit 1 and the second drainage bottom plate unit 2 are assembled, the lower surfaces of the first lap joint protrusion 6 and the second lap joint protrusion 11 are respectively provided with a sealing strip mounting groove 10, and the first lap joint protrusion 6 and the second lap joint protrusion 11 are in lap joint fit and are sealed through a sealing rubber strip 16.
After the first lapping bulge 6 and the second lapping bulge 11 are lapped, a continuous bending waterproof structure is formed at the lapping joint (as shown in fig. 5, a Z-shaped joint and a sealing rubber strip form double sealing); the upper surface of the second overlap protrusion 11 is flush with the upper surface of the drain floor unit 1 after the overlap installation is completed.
After the first drainage bottom plate unit 1 and the second drainage bottom plate unit 2 are assembled, a third drainage groove 19 is formed between the first drainage bottom plate unit 1 and the second drainage bottom plate unit 2 below the first lap joint bulge 6, and the third drainage groove 19 is respectively communicated with the first drainage groove 7 and the second drainage groove 18; thus, the first drainage channel 7 and the second drainage channel 18 can be gathered in the third drainage channel 19, the third drainage channel 19 is directly discharged into the first drainage channel 3 or the third drainage channel 19 is discharged into the second drainage channel 20, and then the second drainage channel 20 is discharged into the first drainage channel 3.
According to the invention, the reverse seepage floor drain 4 is arranged on the prefabricated basement drainage bottom plate, so that seepage water at the upper part of the prefabricated basement bottom plate flows into the first drainage groove 7 through the reverse seepage floor drain, meanwhile, upward water gushing in the prefabricated basement bottom plate is discharged into the third drainage groove 19 through the prefabricated drainage bottom plate, and then is discharged into the first drainage groove or the second drainage groove through the third drainage groove 19, and finally is discharged into the water collecting pit.
The reverse osmosis floor drain 4 is arranged on the first drainage bottom plate unit and/or the second drainage bottom plate unit, an internal thread sleeve penetrating through the unit main body is pre-buried on the first drainage bottom plate unit and/or the second drainage bottom plate unit when the first drainage bottom plate unit and/or the second drainage bottom plate unit are pre-manufactured, external threads are arranged on the outer wall of the reverse osmosis floor drain 4, and the installation of the reverse osmosis floor drain 4 is realized through the matching of the internal threads and the external threads.
The bottom of the reverse seepage floor drain 4 is provided with a magnetic bottom cover, and the water can only be drained from top to bottom and cannot be reversely drained from bottom to top.
The dry-wet combined construction method of the self-flow prefabricated basement drainage bottom plate, namely a combined layer of waterproof mortar is smeared at the bottom of the prefabricated drainage bottom plate, so that the prefabricated bottom plate of a finished product and basement bottom plate concrete can be combined with each other in high strength.
The method comprises the following steps:
1) Positioning and paying off: measuring and paying off the prefabricated drainage bottom plate on the original concrete ground of the basement bottom plate, and positioning the specific paving position of the prefabricated drainage bottom plate; ( If the original ground is uneven: firstly, paving a bonding layer 13 on an original concrete floor 12, and paying off the bonding layer 13 )
2) Assembling a prefabricated basement drainage bottom plate:
2.1 The first drainage bottom plate unit 1 and the second drainage bottom plate unit 2 are inverted in advance, namely, one surface with the supporting bulge 8 faces upwards; a layer of waterproof mortar which is 10mm higher than the bottom surface of the supporting bulge 8 is paved on the supporting bulge 8; the thickness of the waterproof mortar is particularly important, so that the fluidity of the waterproof mortar is reduced, the installation is convenient, and the drainage tank is prevented from being blocked by the waterproof mortar while the connection of the drainage bottom plate units is ensured.
2.2 The first drainage bottom plate unit 1 and the second drainage bottom plate unit 2 are aligned through hoisting equipment, and are assembled in sequence according to the ground paying-off position;
2.3 The adjacent first drainage bottom plate units 1 and the adjacent second drainage bottom plate units 2 are aligned and connected in a sealing way through sealing rubber strips 16; the first drainage bottom plate unit 1 and the second drainage bottom plate unit 2 are in lap joint connection with the second lap joint protrusion 18 through the first lap joint protrusion 7 and are in seal connection through the sealing rubber strip 16;
3) Drainage system sets up:
3.1 After the prefabricated basement drainage bottom plate is assembled, arranging a drainage ditch I3 communicated with the underground water collecting well 17 at the outer side of the prefabricated basement drainage bottom plate;
3.2 The prefabricated basement drainage bottom plate is provided with a reverse seepage floor drain 4, and the elevation of the reverse seepage floor drain 4 is adjusted through threads;
3.3 According to the drainage requirement of the basement, a second drainage ditch 20 can be reserved in the middle of the drainage bottom plate of the prefabricated basement before the assembly of the drainage bottom plate of the prefabricated basement, and a drainage grate is paved on the second drainage ditch 20;
4) Basement ground construction: sealing the reverse seepage floor drain 4, paving a fine stone concrete layer 14 with the diameter of 25-35mm on a prefabricated basement drainage bottom plate, and finally constructing a self-leveling epoxy resin layer 15 on the fine stone concrete layer 14; after the basement floor construction is completed, the top surface of the reverse osmosis floor drain 4 is guaranteed to be flush with the self-leveling epoxy resin layer 15.
The self-flow prefabricated basement drainage bottom plate solves the water seepage and drainage problems of the basement underground part and the ground part of the basement, and has a good application prospect.
Claims (2)
1. The dry-wet combined construction method of the self-flow prefabricated basement drainage bottom plate is characterized in that the self-flow prefabricated basement drainage bottom plate comprises a plurality of first drainage bottom plate units (1) and a plurality of second drainage bottom plate units (2), and the first drainage bottom plate units (1), the second drainage bottom plate units (2) and the first drainage bottom plate units (1) and the second drainage bottom plate units (2) are spliced with each other to form an integral basement drainage bottom plate; the first drainage bottom plate unit (1) comprises a unit main body (5), supporting protrusions (8) and first drainage grooves (7), wherein the supporting protrusions (8) are arranged on the bottom surface of the unit main body (5) at intervals, the first drainage grooves (7) are formed on the bottom surface of the unit main body (5) between two adjacent supporting protrusions (8), and the middle parts of the two end positions of the unit main body (5) extend outwards to form first lap joint protrusions (6); the drainage bottom plate unit II (2) comprises a unit main body (5), supporting protrusions (8) and a second drainage groove (18), wherein the supporting protrusions (8) are arranged on the bottom surface of the unit main body (5) at intervals, and the second drainage groove (18) is formed between two adjacent supporting protrusions (8) on the bottom surface of the unit main body (5); the upper parts of the two end positions of the unit main body (5) outwards extend to form second lap joint bulges (11); the first lapping bulge (6) is lapped and matched with the second lapping bulge (11), and a continuous bending waterproof structure is formed at the joint; the upper surface of the second overlap joint bulge (11) is flush with the upper surface of the first drainage bottom plate unit (1); a third drainage groove (19) is formed between the first drainage bottom plate unit (1) and the second drainage bottom plate unit (2) below the first lap joint bulge (6), and the third drainage groove (19) is respectively communicated with the first drainage groove (7) and the second drainage groove (18); an internal thread sleeve penetrating through the unit main body (5) is arranged on the first drainage bottom plate unit (1) and/or the second drainage bottom plate unit (2), and the internal thread sleeve is connected with a reverse seepage floor drain (4) through threads;
the bottoms of the supporting protrusions (8) of the first drainage bottom plate unit (1) and the second drainage bottom plate unit (2) are provided with at least one strip-shaped groove (9);
sealing rubber strips (16) are respectively arranged between the adjacent first drainage bottom plate units (1), between the adjacent second drainage bottom plate units (2) and between the first drainage bottom plate units (1) and the second drainage bottom plate units (2);
the construction method comprises the following steps:
1) Positioning and paying off: measuring and paying off the prefabricated drainage bottom plate on the original concrete ground (12) of the basement bottom plate, and positioning the specific paving position of the prefabricated drainage bottom plate;
2) Assembling a prefabricated basement drainage bottom plate:
2.1 The first drainage bottom plate unit (1) and the second drainage bottom plate unit (2) are inverted in advance, namely, one surface with the supporting bulge (8) faces upwards; a layer of waterproof mortar which is 8-12mm higher than the bottom surface of the supporting bulge (8) is paved on the supporting bulge (8);
2.2 The first drainage bottom plate unit (1) and the second drainage bottom plate unit (2) are aligned through hoisting equipment, and are assembled in sequence according to the ground paying-off position;
2.3 The adjacent first drainage bottom plate units (1) and the adjacent second drainage bottom plate units (2) are aligned and connected with each other in a sealing way through sealing rubber strips (16); the first drainage bottom plate unit (1) and the second drainage bottom plate unit (2) are in lap joint with the second lap joint bulge (11) through the first lap joint bulge (6), and are in seal joint through the sealing rubber strip (16);
3) Drainage system sets up:
3.1 After the prefabricated basement drainage bottom plate is assembled, arranging a drainage ditch I (3) communicated with an underground water collecting well (17) on the outer side of the prefabricated basement drainage bottom plate;
3.2 A reverse seepage floor drain (4) is arranged on the prefabricated basement drainage bottom plate, and the elevation of the reverse seepage floor drain (4) is adjusted through threads;
3.3 According to the drainage requirement of the basement, reserving a second drainage ditch (20) in the middle of the drainage bottom plate of the prefabricated basement before assembling the drainage bottom plate of the prefabricated basement, and paving a drainage grate on the second drainage ditch (20);
4) Basement ground construction: sealing the reverse osmosis floor drain (4), paving a fine stone concrete layer (14) with the thickness of 25-35mm on a prefabricated basement drainage bottom plate, and finally constructing a self-leveling epoxy resin layer (15) on the fine stone concrete layer (14); after the basement floor construction is finished, the top surface of the reverse seepage floor drain (4) is guaranteed to be flush with the self-leveling epoxy resin layer (15).
2. The dry-wet combined construction method of the self-flowing prefabricated basement drainage bottom plate according to claim 1, wherein supporting protrusions (8) at two ends of the drainage bottom plate unit I (1) and the drainage bottom plate unit II (2) are flush with the end surfaces of the drainage bottom plate unit I (1) and the drainage bottom plate unit II (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111616144.6A CN114319458B (en) | 2021-12-27 | 2021-12-27 | Gravity flow prefabricated basement drainage bottom plate and dry-wet combined construction method thereof |
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| CN202111616144.6A CN114319458B (en) | 2021-12-27 | 2021-12-27 | Gravity flow prefabricated basement drainage bottom plate and dry-wet combined construction method thereof |
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| CN114319458B true CN114319458B (en) | 2024-02-09 |
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| CN206916792U (en) * | 2017-07-03 | 2018-01-23 | 深圳市泰安建设工程有限公司 | A kind of discharge structure of basement bottom board |
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