CN110747899B - Basement waterproof construction method - Google Patents
Basement waterproof construction method Download PDFInfo
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- CN110747899B CN110747899B CN201911012642.2A CN201911012642A CN110747899B CN 110747899 B CN110747899 B CN 110747899B CN 201911012642 A CN201911012642 A CN 201911012642A CN 110747899 B CN110747899 B CN 110747899B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- 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
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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/0007—Base structures; Cellars
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/665—Sheets or foils impervious to water and water vapor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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Abstract
The invention discloses a basement waterproof construction method, which comprises the following steps: excavating to form a basement pit structure; pouring a first concrete cushion layer; building a permanent wall at the edge of the first concrete cushion, and building a temporary wall on the upper part of the permanent wall; laying a first waterproof roll material layer, turning the first waterproof roll material layer up to the temporary wall along the permanent wall, and temporarily fixing the first waterproof roll material layer and the temporary wall; pouring a first structural bottom plate, and pouring a structural side wall at the edge of the first structural bottom plate, wherein the structural side wall is parallel to the permanent wall; removing the temporary wall, and paving a second waterproof roll layer on the surface of one side of the structure side wall facing the permanent wall; building a protection wall on the permanent wall; filling backfill and pouring an upper concrete cushion; paving a third waterproof roll layer to enable the third waterproof roll layer to be in lap joint with the second waterproof roll layer; and pouring a second structural bottom plate. Providing reliable waterproof quality for the basement structure.
Description
Technical Field
The invention belongs to the field of basement waterproof buildings, and particularly relates to a basement waterproof construction method.
Background
At present, the existing technologies of basement waterproofing methods are all universal, only the key points of the abiding of construction are shown, and no further targeted treatment method or construction process can be provided. In a construction project, when special geographic conditions or construction foundations are met, on-site conditions, construction experience of professionals, construction cases at home and abroad and argumentations of experts are often combined to conduct discussion to confirm a construction method, but the referential of most of the schemes of the special argumentations is not very large. If the inherent and favorable construction method which can be directly used is established for key and difficult parts in the common characteristics of the same type of basement waterproof structures, the cost is greatly reduced, and the quality and the controllability are improved.
Therefore, it is necessary to develop a basement waterproofing construction method to solve the problem of great randomness of waterproofing and civil engineering construction methods when the basement cushion layer has a special-shaped structure, ensure the waterproofing integrity of the basement cushion layer part, and provide reliable waterproofing quality for the basement structure.
Disclosure of Invention
The invention aims to provide a basement waterproof construction method, which aims at key and difficult parts in common characteristics of basement waterproof structures of the same class to establish an inherent and favorable construction method capable of being directly used, reduce the cost and improve the construction quality and controllability.
In order to achieve the purpose, the invention provides a basement waterproof construction method, which comprises the following steps:
1) excavating a soil layer according to the designed elevation and combining with a field enclosing structure to form a basement pit structure with a slope on the side wall, and tamping;
2) pouring a first concrete cushion layer at the bottom of the pit structure;
3) building a permanent wall at the edge of the first concrete cushion, and building a temporary wall on the upper part of the permanent wall;
4) laying a first waterproof roll layer on the first concrete cushion layer, turning the first waterproof roll layer up to the temporary wall along the permanent wall, and temporarily fixing the first waterproof roll layer and the temporary wall;
5) pouring a first structural bottom plate on the first waterproof roll layer, and pouring a structural side wall on the edge of the first structural bottom plate, wherein the structural side wall is parallel to the permanent wall;
6) removing the temporary wall, and paving a second waterproof roll layer on the surface of one side of the structure side wall facing the permanent wall;
7) building a protection wall on the permanent wall;
8) filling backfill between the side wall of the pit structure and the permanent wall, and pouring an upper concrete cushion layer on the upper part of the backfill according to the elevation requirement;
9) paving a third waterproof coiled material layer on the upper concrete cushion layer, and enabling the third waterproof coiled material layer and the second waterproof coiled material layer to form lap joint;
10) and pouring a second structure bottom plate on the third waterproof coiled material layer, wherein the second structure bottom plate is connected to the structure side wall.
Preferably, the step 3) is followed by: and paving a leveling layer on the surface of the permanent wall facing the basement.
Preferably, the step 4) is preceded by: and laying a first waterproof additional layer at a concave corner formed by the permanent wall and the first concrete cushion layer.
Preferably, the step 5) includes:
5.1) laying a first protective layer on the upper part of the first waterproof roll layer positioned on the first concrete cushion layer;
5.2) binding steel bars of a first structural bottom plate and a first section of structural side wall on the first protective layer, and welding a water stop steel plate on the tops of the steel bars of the first section of structural side wall, wherein the top surface of the first section of structural side wall is higher than the permanent wall;
5.3) pouring concrete of the first structural bottom plate and the first section of structural side wall;
5.4) binding steel bars of a second section of structure side wall above the first section of structure side wall, welding a water stop steel plate on the tops of the steel bars of the second section of structure side wall, and performing formwork supporting treatment on two sides after binding is completed;
5.5) pouring concrete of the side wall of the second section structure;
and 5.6) after the concrete is solidified, removing the formworks at the two sides.
Preferably, the step 6) includes:
6.1) dismantling the temporary wall, avoiding damaging the first waterproof roll layer during dismantling, and if the first waterproof roll layer is damaged, carrying out repairing treatment to ensure the integral waterproof effect of the first waterproof roll layer;
6.2) laying a second waterproof additional layer at the construction joint of the first section structure side wall and the second section structure side wall facing to one side of the permanent wall;
6.3) the orientation of first section structure side wall with second section structure side wall lay on the surface of permanent wall one side the waterproof roll material layer of second, the lower part on waterproof roll material layer of second cover in first waterproof layer edge, turn over on waterproof roll material layer upper portion of second to structure side wall top.
Preferably, the upper concrete pad includes a second concrete pad and a third concrete pad, and the step 8) includes:
8.1) filling backfill between the side walls of the pit structure and the permanent wall so that the backfill is higher than the protective wall;
8.2) adopting natural sedimentation or manual compaction to ensure that the height of the backfill soil is equal to that of the protection wall;
8.3) pouring a third concrete cushion above the backfill soil according to the elevation requirement, wherein the height of the upper surface of the third concrete cushion is lower than that of the structure side wall;
8.4) building a second permanent wall on the outer side edge of the third concrete cushion layer, so that a groove is formed among the second permanent wall, the third concrete cushion layer and the structural side wall;
8.5) laying a second leveling layer on the top surface of the second permanent wall and the side surface facing the groove;
8.6) filling backfill between the side wall of the pit structure and the second permanent wall to a designed elevation, and adopting natural sedimentation or manual compaction;
8.7) pouring a second concrete cushion on the backfill soil, so that the second concrete cushion is flush with the height of the second permanent wall.
Preferably, the step 9) includes:
9.1) paving a third water-proofing additional layer along the inner wall of the groove, bonding the third water-proofing additional layer with the second waterproof roll layer, and extending the third water-proofing additional layer to the second concrete cushion layer;
9.2) the second concrete cushion reaches the third water prevention coiled material layer is laid on the surface on third water prevention additional layer, and makes the third water prevention coiled material layer with the effective bonding in second water prevention coiled material layer.
Preferably, the step 6) includes:
6.1) dismantling the temporary wall, avoiding damaging the first waterproof roll layer during dismantling, and if the first waterproof roll layer is damaged, carrying out repairing treatment to ensure the integral waterproof effect of the first waterproof roll layer;
6.2) laying a second waterproof additional layer at the construction joint of the first section structure side wall and the second section structure side wall facing to one side of the permanent wall;
6.3) arranging a temporary wood template on the top of the side wall of the second section structure;
6.4) paving the second waterproof roll material layer on the surfaces of the first section structure side wall and the second section structure side wall, which face to one side of the permanent wall, wherein the lower part of the second waterproof roll material layer covers the edge of the first waterproof roll material layer, and the upper part of the second waterproof roll material layer is turned upwards to the temporary wood formwork and is temporarily fixed with the temporary wood formwork;
6.5) set up third water prevention additional layer on the waterproof roll material layer of second, the lower half on third water prevention additional layer with the waterproof roll material layer of second bonds and is less than the structure side wall, the first half on third water prevention additional layer stretches out the structure side wall and with the waterproof roll material layer of second turn over the highly unanimous.
Preferably, the step 8) includes:
8.1) filling backfill between the side wall of the pit structure and the permanent wall, so that the height of the backfill is higher than that of the protection wall;
8.2) adopting natural sedimentation or manual compaction to ensure that the height of the backfill soil is equal to that of the protection wall;
8.3) pouring an upper concrete cushion on the backfill soil, so that the upper concrete cushion extends to the top of the protection wall.
Preferably, the step 9) includes:
9.1) turning the upper part of the third waterproof additional layer onto the second concrete cushion layer and bonding the upper part with the second concrete cushion layer;
9.2) turning the upper part of the second waterproof roll layer onto the second concrete cushion layer and bonding the upper part of the second waterproof roll layer with the third waterproof additional layer;
9.3) paving a third waterproof roll material layer on the upper concrete cushion layer, wherein the third waterproof roll material layer covers the edge of the second waterproof roll material layer;
9.4) removing the temporary wood formwork.
Preferably, the step 10) includes:
10.1) paving a second protective layer on the third waterproof roll layer;
10.2) binding steel bars of a second structural bottom plate on the second protective layer;
and 10.3) pouring concrete of the second structure bottom plate to enable the second structure bottom plate to be tightly connected with the structure side wall.
Preferably, the protection wall is a thermal insulation board wall or a brick wall.
Preferably, the first and upper concrete mats have a strength rating of at least C15 and a thickness of at least 100 mm.
The invention has the beneficial effects that: a structural joint is established for the waterproof and structural concrete construction of the special-shaped structure of the basement; a special-shaped structure waterproof construction method of a basement cushion part is built in a targeted manner; construction processes of waterproofing, civil engineering and the like of special-shaped structural parts are combed; outputting a processing mode when the cushion layer part has a special-shaped structure; aiming at key and difficult parts in the common characteristics of the same type of basement waterproof structures, an inherent and favorable construction method which can be directly used is established, the cost is reduced, and the construction quality and controllability are improved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a construction node diagram of a basement waterproofing construction method according to an embodiment of the present invention.
Fig. 2 is a general view illustrating a waterproofing structure of a basement waterproofing construction method according to an embodiment of the present invention.
Fig. 3 shows a construction joint diagram of a basement waterproofing construction method according to another embodiment of the present invention.
Fig. 4 is a construction node diagram illustrating a basement waterproofing construction method according to another embodiment of the present invention.
Fig. 5 is a construction node diagram illustrating a basement waterproofing construction method according to another embodiment of the present invention.
Fig. 6 is a general view illustrating a waterproofing structure of a basement waterproofing construction method according to another embodiment of the present invention.
Description of the reference numerals
1. A first concrete cushion; 2. a permanent wall; 3. leveling layer; 4. a temporary wall; 5. a first additional waterproof layer; 6. a first waterproof roll layer; 7. a first protective layer; 8. a first structural floor; 9. a first section of structural side wall; 10. a water stop steel plate; 11. a second section of structural sidewall; 12. a second additional waterproof layer; 13. a second waterproof roll layer; 14. a protection wall; 15. backfilling; 16. a third concrete cushion; 17. a second permanent wall; 18. a second leveling layer; 19. a third water prevention additional layer; 20. a second concrete cushion; 21. a third waterproof roll layer; 22. a second protective layer; 23. a second structural backing plate; 24. a soil layer; 25. and (4) temporary wood templates.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The basement waterproof construction method comprises the following steps:
1) excavating a soil layer according to the designed elevation and combining with a field enclosing structure to form a basement pit structure with a slope on the side wall, and tamping;
2) pouring a first concrete cushion layer at the bottom of the pit structure;
3) building a permanent wall at the edge of the first concrete cushion, and building a temporary wall on the upper part of the permanent wall;
4) laying a first waterproof roll layer on the first concrete cushion layer, turning the first waterproof roll layer up to the temporary wall along the permanent wall, and temporarily fixing the first waterproof roll layer and the temporary wall;
5) pouring a first structural bottom plate on the first waterproof roll layer, and pouring a structural side wall on the edge of the first structural bottom plate, wherein the structural side wall is parallel to the permanent wall;
6) removing the temporary wall, and paving a second waterproof roll layer on the surface of one side of the structure side wall facing the permanent wall;
7) building a protection wall on the permanent wall;
8) filling backfill between the side wall of the pit structure and the permanent wall, and pouring an upper concrete cushion layer on the upper part of the backfill according to the elevation requirement;
9) paving a third waterproof roll layer on the upper concrete cushion layer to enable the third waterproof roll layer to be in lap joint with the second waterproof roll layer;
10) and pouring a second structure bottom plate on the third waterproof coiled material layer, wherein the second structure bottom plate is connected to the structure side wall.
Further, the height of the permanent wall is larger than the thickness of the structure at the lowest elevation, and the thickness of the structure at the lowest elevation is preferably plus 100 mm.
Specifically, the method establishes a structural joint for the waterproofing of the special-shaped structure of the basement and the construction of structural concrete; a special-shaped structure waterproof construction method of a basement cushion part is built in a targeted manner; construction processes of waterproofing, civil engineering and the like of special-shaped structural parts are combed; outputting a processing mode when the cushion layer part has a special-shaped structure; aiming at key and difficult parts in the common characteristics of the same type of basement waterproof structures, an inherent and favorable construction method which can be directly used is established, the cost is reduced, and the construction quality and controllability are improved.
Preferably, step 3) is followed by: and paving a leveling layer on the surface of the permanent wall facing the basement.
Specifically, the leveling layer is a cement mortar leveling layer, and the thickness is preferably 20 mm.
Preferably, step 4) is preceded by: and laying a first waterproof additional layer at the internal corner between the permanent wall and the first concrete cushion.
In particular, the width of the first additional waterproof layer is not less than 500mm, ensuring that the upturning width at the permanent wall and the paving width on the first concrete cushion are not less than 250mm respectively.
Furthermore, in order to prevent the first waterproof additional layer from being limited on two sides in the subsequent construction process, the first waterproof additional layer is not bonded with the base layer, and during the specific construction, nails can be adopted to temporarily fix the two sides of the first waterproof additional layer, and a treatment mode of supplementing a waterproof layer at the fixing holes is adopted; and the cement mortar or polymer cement mortar can also be used for carrying out construction bonding treatment on two sides and the middle part of the first waterproof additional layer by a point bonding method. As long as it is temporarily ensured that the first waterproof additional layer does not shift in the subsequent construction process.
Furthermore, the first waterproof roll layer is laid and attached on the permanent wall according to corresponding requirements, and after construction is completed, the first waterproof roll layer is turned upwards to the top surface of the temporary wall and is temporarily fixed by fixing measures such as fixing nails.
Note that the temporary wall still needs to be removed at a later stage, in order to avoid damage of the coiled material, the first waterproof coiled material layer is not bonded with the temporary wall, and the contact part of the first waterproof coiled material layer and the permanent wall is constructed by a dry-paving method, namely, the coiled material at the part is not bonded with the wall surface (for example, the isolating film of the self-adhesive coiled material can not be completely torn off when the self-adhesive coiled material is constructed at the part, the first waterproof additional layer is only torn off at the first waterproof additional layer to ensure that the first waterproof additional layer is firmly bonded with the first waterproof coiled material layer, and the SBS type hot-melt coiled material is only baked at the first waterproof additional layer to ensure that the first waterproof additional layer is firmly bonded with the first waterproof additional layer).
Preferably, step 5) comprises:
5.1) laying a first protective layer on the upper part of a first waterproof roll layer positioned on the first concrete cushion layer;
5.2) binding steel bars of the first structural bottom plate and the first section of structural side wall on the first protective layer, and welding a water stop steel plate on the tops of the steel bars of the first section of structural side wall, wherein the top surface of the first section of structural side wall is higher than the permanent wall;
5.3) pouring concrete of the first structural bottom plate and the first section of structural side wall;
5.4) binding the steel bars of the side wall of the second section structure above the side wall of the first section structure, welding a water stop steel plate on the top of the steel bars of the side wall of the second section structure, and performing formwork support treatment on two sides after binding is finished;
5.5) pouring concrete of the side wall of the second section structure;
and 5.6) after the concrete is solidified, removing the formworks at the two sides.
Specifically, the protective layer is a fine stone concrete protective layer, and the thickness of the protective layer is preferably 50 mm; when the protective layer is poured and constructed, the first waterproof roll material layer which is constructed is prevented from being damaged as much as possible, and full-length welding is adopted between the water stop steel plate and the reinforcing steel bars.
The top surface of the first section of structure side wall is 250-300 mm higher than the permanent wall, so that the construction joint can be positioned above the permanent wall, and the construction of a subsequent waterproof additional layer at the construction joint is facilitated.
Furthermore, after the templates on the two sides are removed, the wall surface of the side wall of the structure needs to be checked according to requirements, and the wall surface with the honeycomb fiber reinforced plastics is required to be repaired in time, so that the waterproof construction requirements are met.
Preferably, step 6) comprises:
6.1) dismantling the temporary wall, avoiding damaging the first waterproof roll layer during dismantling, and repairing if the first waterproof roll layer is damaged, so as to ensure the integral waterproof effect of the first waterproof roll layer;
6.2) laying a second waterproof additional layer at the construction joint of the side wall of the first section structure and the side wall of the second section structure facing the permanent wall;
6.3) laying a second waterproof roll material layer on the surfaces of the first section structure side wall and the second section structure side wall, which face one side of the permanent wall, covering the lower part of the second waterproof roll material layer on the edge of the first waterproof layer, and turning the upper part of the second waterproof roll material layer up to the top of the structure side wall.
Specifically, the width of the second waterproof additional layer is not less than 300 mm;
the effective lapping width of the second waterproof additional layer and the first waterproof roll layer is not less than 150mm, and the lapping opening is prevented from directly facing external water impact, namely the upper waterproof layer covers the lower waterproof layer;
before the second waterproof coiled material layer is turned upwards to the top of the structural side wall, corresponding treatment is finished at the construction joint at the top of the structural side wall according to requirements;
preferably, the upper concrete pad includes a second concrete pad and a third concrete pad, and the step 8) includes:
8.1) filling backfill between the side wall of the pit structure and the permanent wall to ensure that the backfill is higher than the protective wall;
8.2) adopting natural sedimentation or manual compaction to ensure that the height of the backfill soil is equal to that of the protection wall;
8.3) pouring a third concrete cushion layer above the backfill according to the elevation requirement, wherein the height of the upper surface of the third concrete cushion layer is lower than that of the structure side wall;
8.4) building a second permanent wall on the outer side edge of the third concrete cushion layer to form a groove among the second permanent wall, the third concrete cushion layer and the structural side wall;
8.5) laying a second leveling layer on the top surface of the second permanent wall and the side surface facing the groove;
8.6) filling backfill between the side wall of the pit structure and the second permanent wall to a designed elevation, and adopting natural sedimentation or artificial compaction;
8.7) pouring a second concrete cushion on the backfill soil to enable the second concrete cushion to be flush with the height of the second permanent wall.
Preferably, step 9) comprises:
9.1) paving a third waterproof additional layer along the inner wall of the groove, bonding the third waterproof additional layer with the second waterproof roll layer, and extending the third waterproof additional layer to the second concrete cushion layer;
9.2) lay third water prevention coil stock layer on the surface of second concrete cushion and third water prevention additional layer, and make third water prevention coil stock layer and the effective bonding in second waterproof coil stock layer.
Specifically, the bonding width of the third water prevention additional layer and the second waterproof roll material layer is at least 250mm, and the width extending to the second concrete cushion layer is at least 250 mm.
Preferably, step 6) comprises:
6.1) dismantling the temporary wall, avoiding damaging the first waterproof roll layer during dismantling, and repairing if the first waterproof roll layer is damaged, so as to ensure the integral waterproof effect of the first waterproof roll layer;
6.2) laying a second waterproof additional layer at the construction joint of the side wall of the first section structure and the side wall of the second section structure facing the permanent wall;
6.3) arranging a temporary wood template on the top of the side wall of the second section structure;
6.4) laying a second waterproof roll material layer on the surfaces of the first section structure side wall and the second section structure side wall, which face one side of the permanent wall, wherein the lower part of the second waterproof roll material layer covers the edge of the first waterproof roll material layer, and the upper part of the second waterproof roll material layer is turned upwards to the temporary wood formwork and is temporarily fixed with the temporary wood formwork;
6.5) set up third water prevention additional layer on the waterproof roll material layer of second, the lower half and the waterproof roll material layer bonding of second water prevention additional layer and be less than the structure side wall, the first half on third water prevention additional layer stretch out the structure side wall and with the waterproof roll material layer of second turn over highly unanimous.
Specifically, the effective overlapping width of the second waterproof roll layer and the first waterproof roll layer is at least 150mm, and the overlapping part should avoid direct impact facing external water, namely, the second waterproof roll layer is adopted to cover the first waterproof roll layer; the upper part of the second waterproof coiled material layer is turned upwards to the height of the temporary wood formwork and is at least 300mm higher than the elevation of the upper surface of the second concrete cushion layer;
and (4) constructing a third waterproof additional layer by combining the thickness of the second concrete cushion layer and the height of the structure side wall, wherein the lower edge of the third waterproof additional layer is 200mm lower than the top surface of the structure side wall.
The top surface of the structure side wall is the construction joint of the structure side wall and the second structure bottom plate.
Furthermore, in consideration of the elevation of the structural side wall, the subsequent upturning height of the second waterproof coiled material layer and the complete uniformity of lap joint, when the elevation of the second section of structural side wall cannot meet the requirement, a temporary wood template is arranged at the top of the second section of structural side wall; if the elevation of the second section structure side wall can meet the requirement of the follow-up upturning height of the second waterproof coiled material layer, the temporary wood formwork is not arranged, and the second waterproof coiled material layer and the second section structure side wall are temporarily fixed.
Preferably, step 8) comprises:
8.1) filling backfill between the side wall of the pit structure and the permanent wall to ensure that the height of the backfill is higher than that of the protective wall;
8.2) adopting natural sedimentation or manual compaction to ensure that the height of the backfill soil is equal to that of the protection wall;
and 8.3) pouring an upper concrete cushion on the backfill soil, so that the upper concrete cushion extends to the top of the protection wall.
Preferably, step 9) comprises:
9.1) turning the upper part of the third waterproof additional layer to the second concrete cushion layer and bonding the upper part of the third waterproof additional layer with the second concrete cushion layer;
9.2) turning the upper part of the second waterproof roll layer to the second concrete cushion layer and bonding the upper part of the second waterproof roll layer with a third waterproof additional layer;
9.3) paving a third waterproof roll material layer on the upper concrete cushion layer, wherein the third waterproof roll material layer covers the edge of the second waterproof roll material layer;
9.4) removing the temporary wood formwork.
Preferably, step 10) comprises:
10.1) paving a second protective layer on the third waterproof roll material layer;
10.2) binding the steel bars of the second structural bottom plate on the second protective layer;
and 10.3) pouring concrete of the second structure bottom plate to enable the second structure bottom plate to be tightly connected with the structure side wall.
Preferably, the protection wall is a thermal insulation board wall or a brick wall.
Specifically, the protection wall can be an insulation board, and fine sand can also be filled between the brick wall and the second waterproof roll material layer after the brick wall is built. Because the upper part of the protection wall needs to be poured with an upper concrete cushion, the protection wall is embedded with fine sand after the brick wall is built; the construction height of the protection wall is 300-400 mm lower than the top surface of the side wall of the structure.
Preferably, the first and upper concrete mats have a strength rating of at least C15 and a thickness of at least 100 mm.
Example one
Fig. 1 is a schematic view of a construction joint of a basement waterproofing construction method according to the present embodiment; fig. 2 is a schematic view of the whole waterproof structure of the basement waterproofing construction method according to the embodiment.
As shown in fig. 1 to 2, the construction method includes the steps of:
(1) according to the design elevation, combining with an on-site enclosing structure, performing 24 excavation on a soil layer, combining the 24 excavation elevation of the soil layer with the elevation requirement of the lowest structure and the elevation requirement of the lowest second-layer structure, and performing certain slope relief treatment between the two layers according to requirements to form a basement pit structure;
(2) tamping the bottom and the side wall of the basement pit structure;
(3) carrying out construction treatment on the first concrete cushion layer 1 below the structural layer at the lowest elevation according to relevant specification requirements, wherein the strength grade of the concrete cushion layer is not less than C15, and the thickness of the concrete cushion layer is at least 100mm (the thickness of the concrete cushion layer in a soft soil layer is at least 150 mm);
(4) building a permanent wall 2 on the first concrete cushion 1 according to the indoor space size requirement, wherein the height of the permanent wall 2 is the structural thickness +100mm at the lowest elevation, and paving a cement mortar leveling layer 3 with the thickness of 20mm on the inner surface of the permanent wall 2;
(5) a temporary wall 4 with the height of 300mm is built on the upper part of the permanent wall 2;
(6) according to the current basement specification requirements, a first waterproof additional layer 5 with the width not less than 500mm is laid at the internal corner part between the permanent wall 2 and the first concrete cushion layer 1, the first waterproof additional layer 5 is upturned to the height of the permanent wall 2 and the width of the first waterproof additional layer 5 horizontally laid on the first concrete cushion layer 1 are respectively 250mm (because the first waterproof additional layer 5 is cracked due to the fracture of the first concrete cushion layer 1 at the joint position caused by the fact that a concrete structure bottom plate is poured at the later stage, meanwhile, in order to prevent the limitation of the two sides of the first waterproof additional layer 5, the first waterproof additional layer 5 is not bonded with a base layer, during the specific construction, nails can be temporarily fixed at the two sides of the first waterproof additional layer 5 and a waterproof layer is added at the fixed holes, and cement mortar or polymer cement mortar can be used for carrying out point bonding construction and bonding treatment on the two sides and the middle part of the first waterproof additional layer 5, as long as it is temporarily ensured that the first waterproof additional layer 5 does not shift in the subsequent construction process);
(7) a first waterproof coiled material layer 6 is laid on the first concrete cushion layer 1, and waterproof coiled material construction is carried out according to the construction process requirements;
(8) the first waterproof roll material layer 6 is paved and pasted on the permanent wall 2 according to corresponding requirements, after construction is completed, the first waterproof roll material layer is turned upwards to the top surface of the temporary wall 4, and is temporarily fixed on the temporary wall 4 through fixing measures such as fixing nails and the like, and the temporary wall 4 still needs to be removed in the later period, so that the coiled material is not bonded with the temporary wall 4 in order to avoid damage of the coiled material; the contact part of the coiled material folded from the first concrete cushion layer 1 to the vertical surface of the permanent wall 2 and the permanent wall 2 is constructed by adopting a dry-laying method (namely the coiled material at the part is not bonded with the wall surface), for example, the isolating film of the self-adhesive coiled material can not be completely torn off when the self-adhesive coiled material is constructed at the part, and only the first waterproof additional layer is torn off, so that the first waterproof additional layer is firmly adhered, and the SBS hot-melt coiled material is baked at the part where the first waterproof additional layer is required to be firmly adhered, so that the first waterproof additional layer is firmly adhered to the coiled material;
(9) according to the requirements, a 50 mm-thick fine stone concrete first protective layer 7 is poured on the surface of the first waterproof roll material layer 6 in the horizontal direction, and the damage to the constructed waterproof layer is avoided as much as possible during pouring;
(10) binding steel bars of the first structure bottom plate 8 and the first section structure side wall 9 on the first protection layer 7, burying a water stop steel plate 10 at a construction joint at the top of the first section structure side wall 9 according to correlation, and performing full-length welding treatment, wherein the welding construction avoids damage to a waterproof layer, and concrete pouring of the first structure bottom plate 8 and the first section structure side wall 9 is performed according to the concrete pouring quality requirement (the first waterproof coiled material layer 6 at the permanent wall is prevented from being damaged);
(11) binding the steel bars of the second section structure side wall 11 on the top of the first section structure side wall 9, welding a water stop steel plate 10 on the top of the steel bars of the second section structure side wall 11, and performing formwork support treatment on two sides after binding;
(12) carrying out concrete pouring construction on the second section of the structural side wall 11 according to the concrete pouring quality requirement, and paying attention to that the concrete pouring elevation position is at a construction joint arranged between the floor slab and the structural side wall according to the standard requirement;
(13) after the concrete is solidified, removing the templates on the two sides, inspecting the wall surface according to requirements after removing the templates, and timely repairing the wall surface with the honeycomb rough surface to meet the waterproof construction requirement;
(14) the temporary wall 4 at the permanent wall 2 is dismantled, the first waterproof roll material layer 6 which is temporarily fixed is prevented from being damaged during the dismantling, if the first waterproof roll material layer 6 is damaged, the repairing treatment is carried out in time, and the integral waterproof effect of the first waterproof roll material layer 6 is ensured;
(15) laying a second waterproof additional layer 12 at a construction joint of the first section structure side wall 9 and the second section structure side wall 11 facing the permanent wall 2 according to design requirements, wherein the width of the second waterproof additional layer 12 is not less than 300 mm;
(16) laying a second waterproof roll material layer 13 on the surfaces of the first section structure side wall 9 and the second section structure side wall 11, which face to one side of the permanent wall, wherein the effective lap joint width of the second waterproof roll material layer 13 and the first waterproof roll material layer 6 temporarily fixed on the temporary wall is not less than 150mm, and a lap joint should avoid direct impact of external water, namely the second waterproof roll material layer 13 covers the first waterproof roll material layer 6; the second waterproof coil layer 13 is turned up to the construction joint at the top of the structural side wall, and before the turning-up construction, the construction joint at the top of the structural side wall is processed (including but not limited to chiseling and the like) according to the requirement;
(17) after the second waterproof roll material layer 13 is constructed, the protective wall 14 is built on the permanent wall 2 according to the actual situation on site, the protective wall 14 can be made by sticking an insulation board, or fine sand is filled between the brick wall and the second waterproof roll material layer 13 after the brick wall is built. Because the upper part of the protection wall 14 needs to be subjected to corresponding pouring treatment of the upper concrete cushion, the main point is to fill fine sand after the brick wall is built; the construction height of the protection wall 14 is 300-400 mm lower than the construction joint at the top of the structural side wall (the thickness of a concrete cushion layer and the requirements of subsequent construction of a waterproof coil layer and the lapping width need to be considered);
(18) according to the backfilling requirement, backfilling corresponding backfill 15 between the permanent wall 2 and the side wall of the pit structure in a layered mode, wherein the backfill 15 generally adopts pseudo-ginseng soil or twenty-eight soil, and the backfilling height is higher than the elevation position of the protection wall 14 in consideration of tamping or sedimentation of the backfill 15;
(19) after naturally settling or manually compacting the backfill soil 15, the height of the backfill soil is flush with the height of the protective wall 14, and a third concrete cushion 16 with the width of 800mm is poured according to the elevation requirement;
(20) building a second permanent wall 17 on the upper portion of the third concrete cushion 16 to form a groove among the second permanent wall 17, the third concrete cushion 16 and the structural side wall, laying a second leveling layer 18 on the top surface of the second permanent wall 17 and the side surface facing the groove, wherein the height of the second leveling layer 18 after construction needs to be equal to the height of the upper surface of a second concrete cushion 20 to be poured subsequently (if the height of the second leveling layer 18 after construction is higher than the height of the lower surface of the second concrete cushion 20, a corresponding template needs to be arranged for treatment before pouring the second concrete cushion 20);
(21) after the second permanent wall 17 is built, backfill 15 is filled between the side wall of the pit structure and the second permanent wall 17 to a designed elevation according to requirements, and the groove is formed to facilitate the second waterproof coiled material layer 13 at the side wall part of the structure and the third waterproof coiled material layer 21 to be effectively connected into a whole, so that the uniformity and effectiveness of the whole waterproof layer at the special-shaped cushion layer of the basement are ensured;
(22) pouring a second concrete cushion 20 on the backfill 15, so that the second concrete cushion 20 is level with the second permanent wall 17;
(23) laying a third additional layer 19 of moisture proofing along the inner wall of the groove, taking care that the edge of the third additional layer 19 of moisture proofing covers at least 250mm of width into the second concrete pad 20;
(24) laying a third waterproof roll layer 21 on the surfaces of the second concrete cushion layer 20 and the third waterproof additional layer 19, wherein the construction is carried out by combining the process requirements of waterproof materials and the requirements of the concrete cushion layer, the third waterproof roll layer 21 is effectively bonded with the second waterproof roll layer 13 at the groove part, and corresponding sealant treatment is added if necessary;
(25) laying a second protective layer 22 on the third waterproof roll layer 21, binding reinforcing steel bars of a second structural bottom plate 23 on the second protective layer 22, and pouring concrete of the second structural bottom plate 13 to enable the second structural bottom plate 13 to be tightly connected with the structural side wall;
(26) and (5) performing subsequent process construction treatment.
Example two
Fig. 3 is a construction joint diagram illustrating a basement waterproofing construction method according to the present embodiment;
fig. 4 is a construction node diagram illustrating a basement waterproofing construction method according to the present embodiment; fig. 5 is a construction node diagram illustrating a basement waterproofing construction method according to the present embodiment; fig. 6 is a schematic view of the whole waterproof structure of the basement waterproofing construction method according to the embodiment.
As shown in fig. 3 to 6, the construction method includes the steps of:
(1) according to the design elevation, combining with an on-site enclosing structure, performing 24 excavation of a soil layer, combining the 24 excavation elevation of the soil layer with the requirement of the lowest structure elevation and the requirement of the lowest second-layer structure elevation (the requirement of the thickness of a protective layer on the upper part of a waterproof layer needs to be considered here), and performing certain slope releasing treatment on the two layers according to the requirement to form a basement pit structure;
(2) tamping soil layers at the bottom and the side wall of the basement pit structure;
(3) the pouring construction of the first concrete cushion layer 1 is carried out at the bottom of the pit structure according to relevant specification requirements, the strength grade of the concrete cushion layer is not less than C15, and the thickness of the concrete cushion layer is not less than 100mm (if the thickness of the concrete cushion layer in a soft soil layer is not less than 150 mm);
(4) building a permanent wall 2 on the first concrete cushion layer 1 according to the indoor space size requirement, wherein the height of the permanent wall 2 is the structural thickness +100mm at the lowest elevation, and paving a cement mortar leveling layer 3 with the thickness of 20mm on the inner wall of the permanent wall 2;
(5) a temporary wall 4 with the height of 300mm is built on the upper part of the permanent wall 2;
(6) according to the current basement specification requirements, a first waterproof additional layer 5 with the width not less than 500mm is laid at the internal corner part clamped between the permanent wall 2 and the first concrete cushion layer 1, the height of the first waterproof additional layer 5 upturning to the permanent wall 2 and the width horizontally laid on the first concrete cushion layer 1 are respectively 250mm, the first concrete cushion layer 1 is broken at the joint position to cause the cracking of the waterproof layer due to the load of the concrete of the later pouring structure bottom plate, meanwhile, in order to prevent the limitation of the two sides of the subsequent waterproof layer, the first waterproof additional layer 5 is not bonded with the base layer, during the concrete construction, nails can be adopted to temporarily fix the two sides of the first waterproof additional layer 5 at the two sides, the waterproof layer is added at the fixing holes, or cement mortar or polymer cement mortar can be adopted to carry out the point bonding construction treatment of the two sides and the middle part of the first waterproof additional layer 5, as long as the first waterproof additional layer 5 is ensured not to deviate in the subsequent construction process;
(7) a first waterproof coil layer 6 is laid on the first concrete cushion layer 1, and waterproof coil construction is carried out according to the requirements of a coil construction process;
(8) the first waterproof roll material layer 6 is paved and pasted on the permanent wall 2 according to corresponding requirements, after the construction is finished, the first waterproof roll material layer is turned upwards to the top surface of the temporary wall 4, and is temporarily fixed on the temporary wall 4 by fixing measures such as fixing nails and the like, the temporary wall 4 still needs to be removed in the later period, and in order to avoid damage of the roll material, the roll material is not bonded with the temporary wall 4; the contact part of the coiled material folded from the first concrete cushion layer 1 part to the vertical surface of the permanent wall 2 and the permanent wall 2 is constructed by adopting a space-laying method (namely the coiled material at the part is not adhered to the wall surface), for example, the isolating film of the self-adhesive coiled material can not be completely torn off when the self-adhesive coiled material is constructed at the part, and only the first waterproof additional layer 5 is torn off, so that the first mode additional layer is ensured to be firmly adhered to the first mode additional layer; the SBS hot-melt coiled material is only baked at the position of the first waterproof additional layer 5 needing to be firmly adhered, so that the first waterproof additional layer 5 is firmly adhered to the first waterproof additional layer;
(9) pouring a 50 mm-thick fine stone concrete first protective layer 7 on the surface of the first waterproof roll material layer 6 according to requirements, and avoiding damaging the constructed waterproof roll material layer during pouring;
(10) binding steel bars of the first structure bottom plate 8 and the first section structure side wall 9 on the first protection layer 7, burying a water stop steel plate 10 at a construction joint at the top of the first section structure side wall 9 according to correlation, and performing full-length welding treatment, wherein the welding construction avoids damage to a waterproof layer, and concrete pouring of the first structure bottom plate 8 and the first section structure side wall 9 is performed according to the concrete pouring quality requirement (the first waterproof coiled material layer 6 at the permanent wall 2 is prevented from being damaged);
(11) binding the steel bars of the second section structure side wall 11 on the top of the first section structure side wall 9, welding a water stop steel plate 10 on the top of the steel bars of the second section structure side wall 11, and performing formwork support treatment on two sides after binding;
(12) carrying out concrete pouring construction on the second section of the structural side wall 11 according to the concrete pouring quality requirement, and paying attention to that the concrete pouring elevation position is at a construction joint arranged between the floor slab and the structural side wall according to the standard requirement;
(13) after the concrete is solidified, removing the templates on the two sides, inspecting the wall surface according to requirements after removing the templates, and timely repairing the wall surface with the honeycomb rough surface to meet the waterproof construction requirement;
(14) the temporary wall 4 at the permanent wall 2 is dismantled, the first waterproof roll material layer 6 which is temporarily fixed is prevented from being damaged during the dismantling, if the first waterproof roll material layer 6 is damaged, the repairing treatment is carried out in time, and the integral waterproof effect of the first waterproof roll material layer 6 is ensured;
(15) laying a second waterproof additional layer 12 at a construction joint of the first section structure side wall 9 and the second section structure side wall 11 facing the permanent wall 2 according to design requirements, wherein the width of the second waterproof additional layer 12 is not less than 300 mm;
(16) temporarily supporting a temporary wood template 25 on the top of the second section structure side wall 11;
(17) laying a second waterproof coiled material layer 13 on the surfaces of the first section structure side wall 9 and the second section structure side wall 11, which face the permanent wall 2, wherein the effective lap joint width of the second waterproof coiled material layer 13 and the first waterproof coiled material layer 6 temporarily fixed on the temporary wall 4 is not less than 150mm, and the lap joint should avoid direct impact of external water, namely the second waterproof coiled material layer 13 covers the first waterproof coiled material layer 6; the upper part of the second waterproof roll layer 13 is turned upwards to the temporary wood formwork 25 and is temporarily fixed with the temporary wood formwork 25, and the second waterproof roll layer 13 is at least turned upwards to the position higher than the standard height of the upper surface of the second concrete cushion layer 20 by 300 mm;
(18) combining the thickness of the second concrete cushion layer 20 and the setting requirement of the construction joint at the upper part of the structural side wall, arranging a third waterproof additional layer 19 on the second waterproof roll layer 13, wherein the lower half part of the third waterproof additional layer 19 is bonded with the second waterproof roll layer 13 and is 200mm lower than the construction joint at the upper part of the structural side wall, and the upper half part of the third waterproof additional layer 19 extends out of the structural side wall and is consistent with the upturning height of the second waterproof roll layer 13; the lower part of the third water-proofing additional layer 19 is fully bonded with the second waterproof roll layer 13, and the rest part of the upper part of the third water-proofing additional layer 19 is temporarily fixed on the temporary wood formwork 25 and is not bonded with the second waterproof roll layer 13;
(19) the construction of the protection wall 14 is carried out according to the actual situation on site, the protection wall 14 can adopt an adhered heat-insulating plate, or adopt fine sand filled between a brick wall and a waterproof layer after the brick wall is constructed, because the upper part of the protection wall 14 needs to be poured with the second concrete cushion 20, the fine sand is mainly filled after the brick wall is constructed, the construction height of the protection wall is the same as the elevation of the lower surface of the second concrete cushion 20, the backfill soil 15 is filled between the side wall of the pit structure and the permanent wall 2, the height of the backfill soil 15 is higher than that of the protection wall 14 (if the construction joint height of the upper part of the side wall of the structure is lower than the elevation of the lower surface of the second concrete cushion 20, the protection wall 14 needs to be constructed in sections, if the construction of the sections is carried out in sections, the backfill construction of the first section of the protection wall 14 is carried out, after the backfill, the second section of the protection wall 14 is constructed, and the backfill is carried out again after the construction of the second section of the protection wall 14 is completed), natural sedimentation or manual compaction is adopted to ensure that the height of the backfill soil 15 is equal to the height of the protection wall;
(20) pouring a second concrete pad 20 over the backfill 15 such that the second concrete pad 20 extends to the top of the protective wall 14;
(21) turning the upper part of the third water-proofing additional layer 19 to the second concrete cushion 20 and bonding the upper part with the second concrete cushion 20;
(22) turning the upper part of the second waterproof roll layer 13 onto the second concrete cushion layer 20 and bonding the upper part with the third waterproof additional layer 19;
(23) laying a third waterproof roll material layer 21 on the second concrete cushion layer 20, wherein the third waterproof roll material layer 21 covers the edge of the second waterproof roll material layer 13, the construction is carried out by combining the process requirements of the waterproof material and the corresponding concrete cushion layer requirements, the third waterproof roll material layer 21 is effectively bonded with the reserved and constructed second waterproof roll material layer 13, and if necessary, corresponding sealant treatment is added;
(24) removing the temporary wood formwork 25;
(25) laying a second protective layer 22 on the third waterproof roll material layer 21;
(26) binding the steel bars of the second structural bottom plate 23 on the second protective layer 22;
(27) and pouring concrete of the second structure bottom plate 23 to enable the second structure bottom plate 23 to be tightly connected with the structure side wall and to be constructed in the subsequent procedures.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (6)
1. A basement waterproof construction method is characterized by comprising the following steps:
1) excavating a soil layer according to the designed elevation and combining with a field enclosing structure to form a basement pit structure with a slope on the side wall, and tamping;
2) pouring a first concrete cushion layer at the bottom of the pit structure;
3) building a permanent wall at the edge of the first concrete cushion, and building a temporary wall on the upper part of the permanent wall;
4) laying a first waterproof roll layer on the first concrete cushion layer, turning the first waterproof roll layer up to the temporary wall along the permanent wall, and temporarily fixing the first waterproof roll layer and the temporary wall;
5) pouring a first structural bottom plate on the first waterproof roll layer, and pouring a structural side wall on the edge of the first structural bottom plate, wherein the structural side wall is parallel to the permanent wall;
specifically, the method comprises the following steps:
5.1) laying a first protective layer on the upper part of the first waterproof roll layer positioned on the first concrete cushion layer;
5.2) binding steel bars of a first structural bottom plate and a first section of structural side wall on the first protective layer, and welding a water stop steel plate on the tops of the steel bars of the first section of structural side wall, wherein the top surface of the first section of structural side wall is higher than the permanent wall;
5.3) pouring concrete of the first structural bottom plate and the first section of structural side wall;
5.4) binding steel bars of a second section of structure side wall above the first section of structure side wall, welding a water stop steel plate on the tops of the steel bars of the second section of structure side wall, and performing formwork supporting treatment on two sides after binding is completed;
5.5) pouring concrete of the side wall of the second section structure;
5.6) after the concrete is solidified, removing the formworks at the two sides;
6) removing the temporary wall, and paving a second waterproof roll layer on the surface of one side of the structure side wall facing the permanent wall;
7) building a protection wall on the permanent wall;
8) filling backfill between the side wall of the pit structure and the permanent wall, and pouring an upper concrete cushion layer on the upper part of the backfill according to the elevation requirement;
9) paving a third waterproof coiled material layer on the upper concrete cushion layer, and enabling the third waterproof coiled material layer and the second waterproof coiled material layer to form lap joint;
10) pouring a second structural bottom plate on the third waterproof roll material layer, wherein the second structural bottom plate is connected to the structural side wall;
wherein the content of the first and second substances,
the step 6) comprises the following steps:
6.1) dismantling the temporary wall, avoiding damaging the first waterproof roll layer during dismantling, and if the first waterproof roll layer is damaged, carrying out repairing treatment to ensure the integral waterproof effect of the first waterproof roll layer;
6.2) laying a second waterproof additional layer at the construction joint of the first section structure side wall and the second section structure side wall facing to one side of the permanent wall;
6.3) paving the second waterproof roll material layer on the surfaces of the first section structure side wall and the second section structure side wall, which face to one side of the permanent wall, wherein the lower part of the second waterproof roll material layer covers the edge of the first waterproof layer, and the upper part of the second waterproof roll material layer is upturned to the top of the structure side wall;
the upper concrete cushion layer comprises a second concrete cushion layer and a third concrete cushion layer, and the step 8) comprises the following steps:
8.1) filling backfill between the side walls of the pit structure and the permanent wall so that the backfill is higher than the protective wall;
8.2) adopting natural sedimentation or manual compaction to ensure that the height of the backfill soil is equal to that of the protection wall;
8.3) pouring a third concrete cushion above the backfill soil according to the elevation requirement, wherein the height of the upper surface of the third concrete cushion is lower than that of the structure side wall;
8.4) building a second permanent wall on the outer side edge of the third concrete cushion layer, so that a groove is formed among the second permanent wall, the third concrete cushion layer and the structural side wall;
8.5) laying a second leveling layer on the top surface of the second permanent wall and the side surface facing the groove;
8.6) filling backfill between the side wall of the pit structure and the second permanent wall to a designed elevation, and adopting natural sedimentation or manual compaction;
8.7) pouring a second concrete cushion on the backfill soil, so that the second concrete cushion is flush with the second permanent wall in height;
the step 9) comprises the following steps:
9.1) paving a third water-proofing additional layer along the inner wall of the groove, bonding the third water-proofing additional layer with the second waterproof roll layer, and extending the third water-proofing additional layer to the second concrete cushion layer;
9.2) paving a third waterproof roll layer on the surfaces of the second concrete cushion layer and the third waterproof additional layer, and effectively bonding the third waterproof roll layer and the second waterproof roll layer; or
The step 6) comprises the following steps:
6.1) dismantling the temporary wall, avoiding damaging the first waterproof roll layer during dismantling, and if the first waterproof roll layer is damaged, carrying out repairing treatment to ensure the integral waterproof effect of the first waterproof roll layer;
6.2) laying a second waterproof additional layer at the construction joint of the first section structure side wall and the second section structure side wall facing to one side of the permanent wall;
6.3) arranging a temporary wood template on the top of the side wall of the second section structure;
6.4) paving the second waterproof roll material layer on the surfaces of the first section structure side wall and the second section structure side wall, which face to one side of the permanent wall, wherein the lower part of the second waterproof roll material layer covers the edge of the first waterproof roll material layer, and the upper part of the second waterproof roll material layer is turned upwards to the temporary wood formwork and is temporarily fixed with the temporary wood formwork;
6.5) arranging a third water-proofing additional layer on the second waterproof roll layer, wherein the lower half part of the third water-proofing additional layer is bonded with the second waterproof roll layer and is lower than the structure side wall, and the upper half part of the third water-proofing additional layer extends out of the structure side wall and is consistent with the upturning height of the second waterproof roll layer;
the step 8) comprises the following steps:
8.1) filling backfill between the side wall of the pit structure and the permanent wall, so that the height of the backfill is higher than that of the protection wall;
8.2) adopting natural sedimentation or manual compaction to ensure that the height of the backfill soil is equal to that of the protection wall;
8.3) pouring an upper concrete cushion on the backfill soil, so that the upper concrete cushion extends to the top of the protection wall;
the step 9) comprises the following steps:
9.1) turning the upper part of the third waterproof additional layer onto the second concrete cushion layer and bonding the upper part with the second concrete cushion layer;
9.2) turning the upper part of the second waterproof roll layer onto the second concrete cushion layer and bonding the upper part of the second waterproof roll layer with the third waterproof additional layer;
9.3) paving a third waterproof roll material layer on the upper concrete cushion layer, wherein the third waterproof roll material layer covers the edge of the second waterproof roll material layer;
9.4) removing the temporary wood formwork.
2. The basement waterproofing construction method according to claim 1 further comprising, after the step 3): and paving a leveling layer on the surface of the permanent wall facing the basement.
3. The basement waterproofing construction method according to claim 1, further comprising, before the step 4): and laying a first waterproof additional layer at a concave corner formed by the permanent wall and the first concrete cushion layer.
4. The basement waterproofing construction method according to claim 1, wherein the step 10) includes:
10.1) paving a second protective layer on the third waterproof roll layer;
10.2) binding steel bars of a second structural bottom plate on the second protective layer;
and 10.3) pouring concrete of the second structure bottom plate to enable the second structure bottom plate to be tightly connected with the structure side wall.
5. The waterproof construction method for the basement according to claim 1, wherein the protection wall is a heat preservation plate wall or a brick wall.
6. The waterproof construction method for basement according to claim 1, wherein the strength grade of the first concrete cushion and the upper concrete cushion is at least C15, and the thickness of the first concrete cushion and the upper concrete cushion is at least 100 mm.
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| CN112411737A (en) * | 2020-09-04 | 2021-02-26 | 杜肖静 | Basement bottom plate and outer wall waterproof structure and construction method |
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| CN112922034A (en) * | 2021-04-12 | 2021-06-08 | 珠海市世纪建设工程有限公司 | Basement waterproof structure and construction method thereof |
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| CN113445642A (en) * | 2021-06-16 | 2021-09-28 | 大荣建设集团有限公司 | Basement outer wall and waterproof integrated structure and construction method thereof |
| CN113718919B (en) * | 2021-07-21 | 2023-05-05 | 新城控股集团实业发展有限公司 | Integrated open water drain structure and construction method |
| CN113653104A (en) * | 2021-08-25 | 2021-11-16 | 中国建筑第八工程局有限公司 | Waterproof structure at underground wall and construction method thereof |
| CN114482061A (en) * | 2021-12-27 | 2022-05-13 | 华北冶建工程建设有限公司 | Excavation method for foundation pit of elevator of middle-rise residential building in silt soil |
| CN114922231B (en) * | 2022-05-13 | 2023-06-13 | 中建八局科技建设有限公司 | Waterproof construction method for intersection of foundation slab and side wall |
| CN115324120A (en) * | 2022-07-26 | 2022-11-11 | 成都建工第四建筑工程有限公司 | Waterproof structure for side surface of large building foundation and construction method thereof |
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