CN111042310A - Basement bottom plate structure and construction method thereof - Google Patents

Basement bottom plate structure and construction method thereof Download PDF

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Publication number
CN111042310A
CN111042310A CN201911286898.2A CN201911286898A CN111042310A CN 111042310 A CN111042310 A CN 111042310A CN 201911286898 A CN201911286898 A CN 201911286898A CN 111042310 A CN111042310 A CN 111042310A
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CN
China
Prior art keywords
concrete
basement
foundation
layer
laid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911286898.2A
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Chinese (zh)
Inventor
武永涛
王斌
张进才
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MCC Tiangong Group Corp Ltd
Original Assignee
MCC Tiangong Group Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MCC Tiangong Group Corp Ltd filed Critical MCC Tiangong Group Corp Ltd
Priority to CN201911286898.2A priority Critical patent/CN111042310A/en
Publication of CN111042310A publication Critical patent/CN111042310A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/0007Base structures; Cellars
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/045Underground 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
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02Protective 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

Abstract

The invention relates to the technical field of basement bottom plates and discloses a basement bottom plate structure which comprises a basement soil foundation, wherein a basement is arranged at the top of the basement soil foundation, a concrete cushion is laid at the top of the basement, a waterproof layer is arranged at the top of the concrete cushion, a polystyrene board is laid at the top of the waterproof layer, the thickness of the polystyrene board is 100mm, a polyvinyl chloride film isolation layer is laid at the top of the polystyrene board, a fine aggregate concrete protection layer is laid at the top of the polyvinyl chloride film isolation layer, and an independent foundation is arranged at the top of the fine aggregate concrete protection layer. This basement bottom plate structure and construction method thereof separately constructs through multilayer structure, and the structure is simpler, and whole work progress is more convenient, and the stability of the work progress of being convenient for goes on, is more convenient for construct than traditional raft foundation, and more economical and practical has more selection spaces on the basis lectotype for the design.

Description

Basement bottom plate structure and construction method thereof
Technical Field
The invention relates to the technical field of basement bottom plates, in particular to a basement bottom plate structure and a construction method thereof.
Background
Along with the rapid development of economy, the demand of buildings is increased day by day, the urban modernization requirement is higher and higher, the basement is widely used, and basements, underground garages and the like can be designed for most multi-storey buildings to meet the requirements of economic and applicable building functions. The raft foundation is generally selected as the foundation form in engineering design, and in recent years, the raft foundation form is still adopted under the condition of better bearing capacity of a natural foundation along with the development of foundation design and construction, so that waste is caused, and the method is particularly important for seeking a foundation form which is simple in structure, convenient to construct and more economical and practical.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a basement bottom plate structure and a construction method thereof, which have the advantages of convenient construction, simple structure and the like, and solve the problem of inconvenience in constructing basements by adopting a raft foundation form.
(II) technical scheme
In order to realize the purposes of convenient construction and simple structure, the invention provides the following technical scheme: the utility model provides a basement bottom plate structure, includes basement soil footing, the basement has been seted up at the top of basement soil footing, the concrete bed has been laid at the top of basement, the waterproof layer is installed at the top of concrete bed, the polyphenyl board has been laid at the top of waterproof layer, the thickness of polyphenyl board is 100mm, polyvinyl chloride film isolation layer has been laid at the top of polyphenyl board, the fine aggregate concrete protective layer has been laid at the top of polyvinyl chloride film isolation layer, independent basis is installed at the top of fine aggregate concrete protective layer.
A construction method of a basement bottom plate structure comprises the following steps:
a, basement excavation: selecting an excavator with proper specification, excavating the basement soil foundation according to a drawing, stopping excavating by using the excavator when the distance between an excavated soil pit and a standard size is about 10cm, excavating manually or filling the position with excessive excavation by using soil, and tamping the soil foundation by using a tamper until the basement meets the standard size;
b, laying a concrete cushion layer: building a template and a steel structure framework in a tamped underground chamber, selecting cement mixed with animal coarse bones and large gravels with large viscosity to stir and mix to prepare coarse concrete for standby, then injecting the coarse concrete into the built structure through grouting equipment, adopting manual concrete pouring and pouring in a natural flowing and inclined surface layering mode, arranging concrete discharging points according to the vibrating range of a vibrator and advancing along with the vibrating direction, scraping by using a wood scraping bar after vibrating, watering, flattening and compacting by using a wood trowel, and airing for at least one week;
c, installing a waterproof layer; after the concrete cushion is solidified, leveling and cleaning the top of the concrete cushion, moving equipment wound with waterproof cloth to the side of the basement, manually unfolding the waterproof cloth, coating glue below the waterproof cloth when the waterproof cloth is unfolded, then paving the waterproof cloth on the concrete cushion, and flattening by using a wooden trowel;
d, laying a polystyrene board and a polyvinyl chloride film isolation layer: paving polystyrene boards on the waterproof layer, injecting glue into gaps between adjacent polystyrene boards, and ensuring the flatness of the polystyrene boards during paving;
e, paving a fine aggregate concrete protective layer: building a template structure for concrete molding above the polyvinyl chloride film isolation layer, selecting fine stones and concrete with high viscosity to be put into a stirring device, injecting a proper amount of water for stirring to prepare fine stone concrete, injecting the fine stone concrete into the built structure through grouting equipment, injecting the fine stone concrete into the fine stone concrete through different directions and different angles, arranging concrete discharging points according to the vibration range of a vibrator and pushing the concrete forward along with the vibration direction, scraping the concrete by using a wood scraping bar after the vibration is finished, flattening and compacting the concrete by using a wood trowel after watering, wherein the airing time is not less than two weeks;
f, installing an independent foundation: selecting a proper position above the formed fine aggregate concrete protective layer and building foundation equipment such as an independent foundation and the like to obtain the basement
Preferably, the thickness of the concrete cushion layer (3) is not less than 10 cm.
Preferably, the cement of the concrete is PO42.5 ordinary portland cement, and the additive is a polycarboxylate high-efficiency water reducing agent.
Preferably, the vibration time of the concrete vibration point is 40-60 seconds, and the vibration time of the concrete vibration point at the bottom of the shear wall of the concrete structure is 100 seconds.
(III) advantageous effects
Compared with the prior art, the invention provides a basement bottom plate structure and a construction method thereof, and the basement bottom plate structure has the following beneficial effects:
1. this basement bottom plate structure and construction method thereof separately constructs through multilayer structure, and the structure is simpler, and whole work progress is more convenient, and the stability of the work progress of being convenient for goes on, is more convenient for construct than traditional raft foundation, and more economical and practical has more selection spaces on the basis lectotype for the design.
2. According to the basement bottom plate structure and the construction method thereof, the vibration points are distributed from the middle to the edge, the vibration time of each vibration point is based on the fact that the concrete surface turns over, does not sink obviously any more and does not have a large amount of bubbles to escape, a wood scraping bar is used for scraping after vibration is finished, and a wood trowel is used for flattening and compacting after watering.
Drawings
FIG. 1 is a schematic structural diagram of a basement floor structure according to the present invention;
fig. 2 is an enlarged view of a basement floor structure shown in fig. 1.
In the figure: 1. basement soil foundation; 2. a basement; 3. a concrete cushion; 4. a waterproof layer; 5. a polystyrene board; 6. a polyvinyl chloride film barrier layer; 7. a fine stone concrete protective layer; 8. an independent basis.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a basement floor structure comprises a basement soil foundation 1, a basement 2 is arranged on the top of the basement soil foundation 1, a concrete cushion 3 is laid on the top of the basement 2, a waterproof layer 4 is installed on the top of the concrete cushion 3, a polystyrene board 5 is laid on the top of the waterproof layer 4, the thickness of the polystyrene board 5 is 100mm, a polyvinyl chloride film isolation layer 6 is laid on the top of the polystyrene board 5, a fine stone concrete protection layer 7 is laid on the top of the polyvinyl chloride film isolation layer 6, an independent foundation 8 is installed on the top of the fine stone concrete protection layer 7, a rudiment of the basement 2 is excavated in the basement soil foundation 1 for subsequent construction, after the concrete cushion 3 laid in the basement 2 is formed, the stability of the whole construction position can be guaranteed, other construction processes can be facilitated, the waterproof layer 4 laid on the concrete cushion 3, Polyphenyl board 5 and polyvinyl chloride film isolation layer 6 can avoid underground steam to permeate basement 2 in, can guarantee the drying in basement 2, through laying of fine aggregate concrete protective layer 7 and cooperate independent basis 8 etc. moreover, can strengthen basement 2's firm degree and practicality, whole basement 2 simple structure, the work progress is convenient high-efficient more.
A construction method of a basement bottom plate structure comprises the following steps:
a, basement 2 excavation: selecting an excavator with proper specification, excavating the basement soil foundation 1 according to a drawing, stopping excavating by using the excavator when the distance between an excavated soil pit and a standard size is about 10cm, excavating manually or filling the position where the excavation is excessive by using soil, and tamping the soil foundation by using a tamper until the basement 2 meets the standard size;
b, laying a concrete cushion 3: building a template and a steel structure framework in the tamped basement 2, selecting cement mixed with animal coarse bones and large sand stones with large viscosity to stir and mix to prepare coarse concrete for standby, then injecting the coarse concrete into the built construction through grouting equipment, adopting manual concrete pouring and pouring in a natural flowing and inclined surface layering mode, arranging concrete discharging points according to the vibrating range of a vibrator and advancing along with the vibrating direction, scraping by using a wood scraping bar after vibrating, flattening and compacting by using a wood trowel after watering, wherein the airing time is not less than one week;
c, installing a waterproof layer 4; after the concrete cushion 3 is solidified, leveling and cleaning the top of the concrete cushion 3, moving equipment wound with waterproof cloth to the side of the basement 2, manually unfolding the waterproof cloth, coating glue below the waterproof cloth when the waterproof cloth is unfolded, then laying the waterproof cloth on the concrete cushion 3, and flattening by using a wooden trowel;
d, laying a polystyrene board 5 and a polyvinyl chloride film isolation layer 6: the polystyrene board 5 is laid on the waterproof layer 4, glue is injected into gaps between adjacent polystyrene boards 5, the flatness of the polystyrene boards 5 during laying is guaranteed, after the polystyrene boards 5 are laid, a polyvinyl chloride film isolation layer 6 covers the large-area polystyrene boards 5, and the glue is sprayed at the joint of the adjacent polyvinyl chloride film isolation layers 6;
e, paving a fine aggregate concrete protective layer 7: building a template structure for concrete molding above the polyvinyl chloride film isolation layer 6, selecting fine stones and concrete with high viscosity to be put into a stirring device, injecting a proper amount of water for stirring to prepare fine stone concrete, injecting the fine stone concrete into the built structure through grouting equipment, injecting the fine stone concrete into the fine stone concrete through different directions and different angles, arranging concrete discharging points according to the vibration range of the vibrator and pushing the concrete forward along with the vibration direction, scraping the concrete by using a wood scraping bar after the vibration is finished, flattening and compacting the concrete by using a wood trowel after watering, wherein the airing time is not less than two weeks;
f, installing an independent foundation 8: selecting a proper position above the formed fine stone concrete protective layer 7 and building foundation equipment such as an independent foundation 8 and the like to obtain the basement 2
Concrete cushion 3 can the diffusion of separation steam, and concrete cushion 3's thickness is not less than 10cm, and thicker concrete cushion 3 is better to the isolated effect of steam.
The purpose of the polystyrene board 5 is to ensure that the waterproof board does not bear or bears the least amount of foundation reaction force, and the polystyrene board 5 has certain strength and elastic modulus and can bear the self weight and construction load of the foundation slab.
Can provide stable support for basement 2 through the concrete, the cement of concrete is PO42.5 ordinary portland cement, the additive is polycarboxylate superplasticizer, and concrete vibration point vibration time is 40-60 seconds, and to the vibration time of concrete structure shear wall bottom concrete vibration point be 100 seconds, through this mode of vibrating, can guarantee the homogeneity of concrete for the concrete quality that condenses is higher, is difficult for the fracture.
The invention has the beneficial effects that: the whole construction process is more convenient and the construction process is more stable through the separated construction of the multilayer structure, the construction is more convenient than the traditional raft foundation, and the raft foundation is more economical and practical and has more selection space for designing foundation selection;
the excavator is adopted for excavation in cooperation with manual excavation, so that the excavation precision can be ensured, the follow-up construction work is facilitated, the controllability of manual construction is higher, and the soil structure is prevented from being damaged due to excessive excavation;
adopting manual concrete pouring and pouring in a natural flowing and inclined surface layering mode, wherein a concrete discharging point is pushed forward along with the vibrating direction; the vibrating points are distributed from the middle to the edge, the vibration time of each vibrating point is based on the fact that the concrete surface turns over, does not sink obviously any more and does not have a large amount of bubbles to escape, a wood scraping bar is used for scraping after the vibrating is finished, and a wood trowel is used for flattening and compacting after watering.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a basement bottom plate structure, includes basement soil base (1), its characterized in that: basement (2) have been seted up at the top of basement soil base (1), concrete bed (3) have been laid at the top of basement (2), waterproof layer (4) are installed at the top of concrete bed (3), polyphenyl board (5) have been laid at the top of waterproof layer (4), the thickness of polyphenyl board (5) is 100mm, polyvinyl chloride film isolation layer (6) have been laid at the top of polyphenyl board (5), fine aggregate concrete protective layer (7) have been laid at the top of polyvinyl chloride film isolation layer (6), independent basis (8) are installed at the top of fine aggregate concrete protective layer (7).
2. A construction method of a basement bottom plate structure is characterized by comprising the following steps:
a, excavating a basement (2): selecting an excavator with a proper specification, excavating the basement soil foundation (1) by referring to a drawing, stopping excavating by using the excavator when the distance between an excavated soil pit and a standard size is about 10cm, excavating manually or filling the position where the excavation is excessive by using soil, and tamping the soil foundation by using a tamper until the basement (2) meets the standard size;
b, paving a concrete cushion (3): building a template and a steel structure framework in the tamped basement (2), selecting cement mixed with animal coarse bones and large gravels with large viscosity to stir and mix to prepare coarse concrete for standby, then injecting the coarse concrete into the built construction through grouting equipment, adopting manual concrete pouring and pouring in a natural flow and inclined plane layering mode, arranging concrete discharging points according to the vibrating range of a vibrator and pushing forwards along with the vibrating direction, scraping by using a wood scraping bar after vibrating, watering, flattening and compacting by using a wood trowel, and airing for no less than one week;
c, installing a waterproof layer (4); after the concrete cushion (3) is solidified, leveling and cleaning the top of the concrete cushion (3), moving equipment wound with waterproof cloth to the side of the basement (2), manually unfolding the waterproof cloth, coating glue below the waterproof cloth when the waterproof cloth is unfolded, then laying the waterproof cloth on the concrete cushion (3), and flattening by using a wooden trowel;
d, laying a polystyrene board (5) and a polyvinyl chloride film isolation layer (6): the waterproof layer (4) is paved with polystyrene boards (5), the gaps between the adjacent polystyrene boards (5) are filled with glue, the flatness of the polystyrene boards (5) during paving is ensured, after the polystyrene boards (5) are paved, a polyvinyl chloride film isolation layer (6) covers the large-area polystyrene boards (5), and the joint of the adjacent polyvinyl chloride film isolation layers (6) is sprayed with the glue;
e, paving a fine aggregate concrete protective layer (7): building a template structure for concrete molding above the polyvinyl chloride film isolation layer (6), selecting fine stones and concrete with high viscosity to be put into a stirring device, injecting a proper amount of water for stirring to prepare fine stone concrete, injecting the fine stone concrete into the built structure through grouting equipment, injecting the fine stone concrete into different directions and different angles, arranging concrete discharging points according to the vibration range of the vibrator and advancing along with the vibration direction, scraping the concrete by using a wood scraping bar after the vibration is finished, watering the concrete, flattening and compacting by using a wood trowel, and airing for no less than two weeks;
f mounting an independent foundation (8): and selecting a proper position above the formed fine aggregate concrete protective layer (7) and building foundation equipment such as an independent foundation (8) and the like to obtain the basement (2).
3. The basement floor construction according to claim 1, characterized in that the thickness of the concrete pad (3) is not less than 10 cm.
4. The basement floor structure of claim 1, wherein the concrete cement is PO42.5 Portland cement and the additive is a polycarboxylate superplasticizer.
5. The basement floor construction according to claim 1, wherein the vibration time of the concrete vibration point is 40-60 seconds, and the vibration time of the concrete vibration point of the concrete structure shear wall bottom is 100 seconds.
CN201911286898.2A 2019-12-14 2019-12-14 Basement bottom plate structure and construction method thereof Pending CN111042310A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111576487A (en) * 2020-06-01 2020-08-25 许庆仁 Underground engineering foundation bottom plate structure and construction method thereof
CN113250224A (en) * 2021-06-16 2021-08-13 王晖 Foundation structure of mountainside building and construction method

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CN103321257A (en) * 2013-06-18 2013-09-25 浙江海天建设集团有限公司 Anti-cracking seepage-proof construction method for ultra-long mass concrete structure basement
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111576487A (en) * 2020-06-01 2020-08-25 许庆仁 Underground engineering foundation bottom plate structure and construction method thereof
CN111576487B (en) * 2020-06-01 2021-02-09 广东佰业泰建设工程有限公司 Underground engineering foundation bottom plate structure and construction method thereof
CN113250224A (en) * 2021-06-16 2021-08-13 王晖 Foundation structure of mountainside building and construction method

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Application publication date: 20200421