CN110747898A - Basement waterproof construction method - Google Patents
Basement waterproof construction method Download PDFInfo
- Publication number
- CN110747898A CN110747898A CN201911012636.7A CN201911012636A CN110747898A CN 110747898 A CN110747898 A CN 110747898A CN 201911012636 A CN201911012636 A CN 201911012636A CN 110747898 A CN110747898 A CN 110747898A
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- Prior art keywords
- concrete cushion
- basement
- permanent wall
- layer
- wall
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Classifications
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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
Abstract
The invention discloses 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) paving a first concrete cushion layer at the bottom of the pit structure; 3) building a permanent wall at the edge of the concrete cushion; 4) filling backfill between the permanent wall and the side wall of the pit structure; 5) pouring a second concrete cushion layer on the upper part of the backfill according to the elevation requirement, so that the second concrete cushion layer is connected with the permanent wall and is level to the height; 6) paving self-adhesive film waterproof rolls on the surfaces of the first concrete cushion, the permanent wall and the second concrete cushion; 7) and pouring a structural bottom plate on the self-adhesive film waterproof coiled material. 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 provide a basement structure with reliable waterproofing quality.
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) laying a first concrete cushion layer at the bottom of the pit structure;
3) building a permanent wall at the edge of the concrete cushion;
4) filling backfill between the permanent walls and the side walls of the pit structure;
5) pouring a second concrete cushion layer on the upper part of the backfill soil according to the elevation requirement, so that the second concrete cushion layer is connected with the permanent wall and is level to the height;
6) paving self-adhesive film waterproof rolls on the surfaces of the first concrete cushion, the permanent wall and the second concrete cushion;
7) and pouring a structural bottom plate on the self-adhesive film waterproof coiled material.
Preferably, the step 3) is followed by: and paving a leveling layer on the inner wall of the permanent wall, wherein the leveling layer is a cement mortar layer, and the thickness of the leveling layer is 10-30 mm.
Preferably, the height of the permanent wall is equal to the sum of the structure thickness at the lowest design level and the net height of the side wall of the basement.
Preferably, the step 4) includes:
4.1) arranging an anti-overturning supporting structure at the inner side of the permanent wall;
4.2) filling backfill in layers;
4.3) waiting for natural sedimentation or adopting manual compaction after the filling is finished.
Preferably, the supporting structure is a scaffold or a tie bar.
Preferably, the backfill soil is pseudo-ginseng soil or dioctahsoil.
Preferably, the step 6) includes:
6.1) performing base layer cleaning on the surfaces of the first concrete cushion layer, the permanent wall and the second concrete cushion layer;
and 6.2) paving the self-adhesive film waterproof roll material by adopting a pre-paving and anti-sticking method, wherein a lap joint is formed between two adjacent self-adhesive film waterproof roll materials.
Preferably, the step 6) further comprises:
the lap joint of the self-adhesive film waterproof coiled material is provided with a fixing nail for fixing, or
And installing a weldable fixing sheet on the permanent wall, and welding the self-adhesive film waterproof coiled material on the weldable fixing sheet for fixing.
Preferably, the step 7) includes:
7.1) binding steel bars at the upper part of the first concrete cushion and the lower part of a construction joint of the permanent wall, and welding a water stop steel plate at the construction joint;
7.2) pouring the structural bottom plate at the upper part of the first concrete cushion layer and the lower part of the construction joint of the permanent wall;
7.3) binding steel bars on the upper parts of the construction joints of the permanent wall and the second concrete cushion;
7.4) carrying out inner formwork supporting treatment on the permanent wall;
7.5) pouring the upper part of the construction joint of the permanent wall and the structural bottom plate at the upper part of the second concrete cushion.
Preferably, the strength grade of the first concrete cushion layer and the second concrete cushion layer is not less than C15, and the thickness of the first concrete cushion layer and the second concrete cushion layer is at least 100 mm.
The invention has the beneficial effects that: by combining the characteristics of the self-adhesive film waterproof coiled material with the waterproof construction method, a structural joint is established for the waterproof 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.
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 is a schematic view showing a waterproofing structure of a basement waterproofing construction method according to an embodiment of the present invention.
Fig. 2 shows a coil lap joint schematic diagram of a basement waterproofing construction method according to an embodiment of the invention.
Fig. 3 shows a coil fixing diagram of a basement waterproofing construction method according to an embodiment of the present invention.
Description of the reference numerals
1. A soil layer; 2. backfilling; 3. constructing a joint; 4. a first concrete cushion; 5. a structural floor; 6. a water stop steel plate; 7. a permanent wall; 8. self-adhesive film waterproof roll; 9. leveling layer; 10. a second concrete cushion; 11. a lap joint; 12. and (5) fixing the nail.
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) paving a first concrete cushion layer at the bottom of the pit structure;
3) building a permanent wall at the edge of the concrete cushion;
4) filling backfill between the permanent wall and the side wall of the pit structure;
5) pouring a second concrete cushion layer on the upper part of the backfill according to the elevation requirement, so that the second concrete cushion layer is connected with the permanent wall and is level to the height;
6) paving self-adhesive film waterproof rolls on the surfaces of the first concrete cushion, the permanent wall and the second concrete cushion;
7) and pouring a structural bottom plate on the self-adhesive film waterproof coiled material.
Specifically, by combining the characteristics of the self-adhesive film waterproof coiled material with the waterproof construction method, a structural joint is established 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 inner wall of the permanent wall, wherein the leveling layer is a cement mortar layer, and the thickness of the leveling layer is 10-30 mm.
Preferably, the height of the permanent wall is equal to the sum of the structural thickness at the lowest design elevation and the clear height of the side wall of the basement.
Preferably, step 4) comprises:
4.1) arranging an anti-overturning supporting structure at the inner side of the permanent wall;
4.2) filling backfill in layers;
4.3) waiting for natural sedimentation or adopting manual compaction after the filling is finished.
Preferably, the supporting structure is a scaffold or a tie bar.
Preferably, the backfill soil is pseudo-ginseng soil or dioctahsoil.
Preferably, step 6) comprises:
6.1) carrying out base layer cleaning on the surfaces of the first concrete cushion layer, the permanent wall and the second concrete cushion layer;
6.2) paving the self-adhesive film waterproof coiled material by adopting a pre-paving and anti-sticking method, and forming lap joint between two adjacent self-adhesive film waterproof coiled materials.
Preferably, step 6) further comprises:
the lap joint of the self-adhesive film waterproof coiled material is provided with a fixing nail for fixing, or
And installing a weldable fixing sheet on the permanent wall, and welding the self-adhesive film waterproof coiled material on the weldable fixing sheet for fixing.
Preferably, step 7) comprises:
7.1) binding steel bars at the upper part of the first concrete cushion and the lower part of a construction joint of the permanent wall, and welding a water stop steel plate at the construction joint;
7.2) pouring structural bottom plates at the upper part of the first concrete cushion layer and the lower part of the construction joint of the permanent wall;
7.3) binding steel bars on the upper part of the construction joint of the permanent wall and the upper part of the second concrete cushion;
7.4) carrying out inner formwork supporting treatment on the permanent wall;
7.5) pouring the structural bottom plate on the upper part of the construction joint of the permanent wall and the upper part of the second concrete cushion.
Specifically, when the steel bars are bound at the side walls, hard puncture of coiled materials at the side walls is avoided as much as possible; when the water-stopping steel plate is welded at the construction joint, proper protective measures are adopted for welding slag, and the damage to the high-polymer waterproof layer is avoided.
Preferably, the strength grade of the first concrete cushion layer and the second concrete cushion layer is not less than C15, and the thickness is at least 100 mm.
Examples
Fig. 1 is a schematic view showing a waterproofing structure of a basement waterproofing construction method according to the present embodiment; fig. 2 is a schematic diagram illustrating a roll lap joint of the basement waterproofing construction method according to the present embodiment; fig. 3 is a coil fixing diagram illustrating a waterproof construction method for a basement according to the embodiment.
As shown in fig. 1 to 3, the basement waterproofing construction method comprises the following steps:
(1) according to the design elevation, combining with a field enclosing structure, carrying out soil layer 1 excavation, combining the soil layer 1 excavation elevation with the lowest structure elevation requirement and the lowest second-layer structure elevation requirement, and carrying out certain slope relief treatment between 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 pit structure;
(3) performing construction treatment on the first concrete cushion 4 at the lower part of the structural layer at the lowest elevation according to the requirements of relevant specifications, wherein the strength grade of the first concrete cushion 4 is not less than C15, and the thickness of the first concrete cushion 4 is not less than 100mm (if the thickness of the first concrete cushion is not less than 150mm in a soft soil layer);
(4) building a permanent wall 7 at the position of the first concrete cushion 4 at the lowest elevation according to the requirement of the indoor space size, wherein the height of the permanent wall 7 is equal to the sum of the structural thickness at the lowest elevation and the net height of the side wall of the basement, and the permanent wall 7 can be built in two parts or can be built together;
(5) constructing a cement mortar leveling layer 9 with the thickness of 20mm on the inner wall and the top surface of the permanent wall 7 so as to paste the waterproof coiled material;
(6) according to the requirements, backfill soil 2 is filled between the outer side of the permanent wall 7 and the side wall of the pit structure, and a certain overturn-preventing treatment measure, such as scaffold steel pipe inclined support, is required to be adopted at the inner side of the permanent wall 7 during backfilling because the permanent wall 7 has a certain height, and the tie treatment between the outer side enclosing structure and the permanent wall can also be utilized during building of the permanent wall, and is similar to tie bars in brick walls;
(7) according to the requirement, gaps between the side walls of the layered backfill pit structure and the permanent walls 7 are filled with the backfill soil 2, wherein pseudo-ginseng soil or twenty-eight soil is adopted;
(8) after the backfill 2 is settled to a certain degree or is compacted manually to a certain degree, a second concrete cushion 10 is poured according to the elevation requirement;
(9) after the strength of the concrete cushion layer meets the requirement, performing base layer cleaning on the surfaces of the leveling layer 9 on the surfaces of the first concrete cushion layer 4 and the permanent wall 7 and the surface of the second concrete cushion layer 10;
(10) the paving construction of the macromolecule self-adhesive film waterproof coiled material 8 is carried out on the surfaces of the three parts, the material is carried out by adopting a pre-paving and reverse-adhering method, so that the smooth surface (namely the surface without the adhesive layer surface or the fine sand surface) of the material is only required to be directly contacted with the surface of the base layer; in order to prevent the permanent wall 7 from sliding downwards and ensure that the permanent wall and the vertical surface can have better fitting degree, fixing nails 12 are added on the inner layer surface of the overlapping edge 11 or a weldable fixing sheet is firstly constructed on the surface of the permanent wall vertical surface (arranged in a quincunx shape, the distance is not more than 1 meter) and then the smooth surface of a coiled material is welded on the weldable fixing sheet for proper fixing treatment;
(11) binding steel bars on the upper portion of the first concrete cushion 4 and the lower portion of the construction joint 3 of the permanent wall 7, and welding a water stop steel plate 6 at the construction joint 3, wherein when the steel bars are bound at the permanent wall 7, hard puncture of coiled materials at the permanent wall 7 is avoided as much as possible; when the water stop steel plate 6 is welded at the construction joint 3, appropriate protective measures are adopted for corresponding welding slag to avoid damage to the self-adhesive film waterproof coiled material 8;
(12) pouring a structural bottom plate 5 at the upper part of the first concrete cushion 4 and the lower part of the construction joint 3 of the permanent wall 7;
(13) steel bars on the upper parts of the construction joints 3 of the permanent wall 7 and the upper part of the second concrete cushion 10 are bound (whether the steel bars are bound together or not can be carried out according to the actual situation on site, and the steel bars on the upper parts of the construction joints of the permanent wall are bound generally firstly);
(14) carrying out inner formwork supporting treatment on the permanent wall 7;
(15) and pouring the upper part of the construction joint 3 of the permanent wall 7 and the structural bottom plate 5 at the upper part of the second concrete cushion 10 (whether the two are poured together or the structural bottom plate at the upper part of the construction joint of the permanent wall is poured firstly and then the structural bottom plate at the upper part of the second concrete cushion is poured, which is determined according to the actual situation on site).
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 (10)
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) laying a first concrete cushion layer at the bottom of the pit structure;
3) building a permanent wall at the edge of the concrete cushion;
4) filling backfill between the permanent walls and the side walls of the pit structure;
5) pouring a second concrete cushion layer on the upper part of the backfill soil according to the elevation requirement, so that the second concrete cushion layer is connected with the permanent wall and is level to the height;
6) paving self-adhesive film waterproof rolls on the surfaces of the first concrete cushion, the permanent wall and the second concrete cushion;
7) and pouring a structural bottom plate on the self-adhesive film waterproof coiled material.
2. The basement waterproofing construction method according to claim 1 further comprising, after the step 3): and paving a leveling layer on the inner wall of the permanent wall, wherein the leveling layer is a cement mortar layer, and the thickness of the leveling layer is 10-30 mm.
3. The basement waterproofing method according to claim 1 wherein the height of the permanent wall is equal to the sum of the structural thickness at the lowest design level and the clear height of the basement side wall.
4. The basement waterproofing construction method according to claim 1, wherein the step 4) includes:
4.1) arranging an anti-overturning supporting structure at the inner side of the permanent wall;
4.2) filling backfill in layers;
4.3) waiting for natural sedimentation or adopting manual compaction after the filling is finished.
5. The basement waterproofing construction method according to claim 4, wherein the support structure is a scaffold or tie bars.
6. The basement waterproofing construction method according to claim 1, wherein the backfill soil is pseudo-ginseng soil or dioctahas soil.
7. The basement waterproofing construction method according to claim 1, wherein the step 6) includes:
6.1) performing base layer cleaning on the surfaces of the first concrete cushion layer, the permanent wall and the second concrete cushion layer;
and 6.2) paving the self-adhesive film waterproof roll material by adopting a pre-paving and anti-sticking method, wherein a lap joint is formed between two adjacent self-adhesive film waterproof roll materials.
8. The basement waterproofing construction method according to claim 7, wherein the step 6) further comprises:
the lap joint of the self-adhesive film waterproof coiled material is provided with a fixing nail for fixing, or
And installing a weldable fixing sheet on the permanent wall, and welding the self-adhesive film waterproof coiled material on the weldable fixing sheet for fixing.
9. The basement waterproofing construction method according to claim 1, wherein the step 7) includes:
7.1) binding steel bars at the upper part of the first concrete cushion and the lower part of a construction joint of the permanent wall, and welding a water stop steel plate at the construction joint;
7.2) pouring the structural bottom plate at the upper part of the first concrete cushion layer and the lower part of the construction joint of the permanent wall;
7.3) binding steel bars on the upper parts of the construction joints of the permanent wall and the second concrete cushion;
7.4) carrying out inner formwork supporting treatment on the permanent wall;
7.5) pouring the upper part of the construction joint of the permanent wall and the structural bottom plate at the upper part of the second concrete cushion.
10. The waterproof construction method for the basement according to claim 1, wherein the strength grade of the first concrete cushion and the strength grade of the second concrete cushion are not less than C15, and the thickness of the first concrete cushion and the second concrete cushion is at least 100 mm.
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| CN201911012636.7A CN110747898A (en) | 2019-10-23 | 2019-10-23 | Basement waterproof construction method |
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| CN201911012636.7A CN110747898A (en) | 2019-10-23 | 2019-10-23 | Basement waterproof construction method |
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Cited By (2)
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| CN113482176A (en) * | 2021-07-29 | 2021-10-08 | 青岛海发置业有限公司 | Waterproof and anti-pulling-crack damage structure for outer vertical surface of deep foundation pit structure and construction method thereof |
| 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 |
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| CN208907231U (en) * | 2018-07-17 | 2019-05-28 | 浙江广厦建设职业技术学院 | A kind of architectural engineering seepage in underground area waterproof construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113482176A (en) * | 2021-07-29 | 2021-10-08 | 青岛海发置业有限公司 | Waterproof and anti-pulling-crack damage structure for outer vertical surface of deep foundation pit structure and construction method thereof |
| 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 |
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