CN218405931U - Durable energy-saving plastering-free outer wall structure - Google Patents
Durable energy-saving plastering-free outer wall structure Download PDFInfo
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- CN218405931U CN218405931U CN202222379201.XU CN202222379201U CN218405931U CN 218405931 U CN218405931 U CN 218405931U CN 202222379201 U CN202222379201 U CN 202222379201U CN 218405931 U CN218405931 U CN 218405931U
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The utility model discloses a durable energy-conserving external wall structure of exempting from to plaster relates to architectural design and construction technical field, and its technical scheme main points are: comprises a shear wall body which is formed by pouring an aluminum die process; the inner steel bar protection layer is arranged on the inner wall of the shear wall body; the outer steel bar protection layer is arranged on the outer wall of the shear wall body; the outer steel bar protection layer comprises a design protection layer and an additional protection layer; the thickness of the designed protective layer is consistent with that of the inner steel bar protective layer; the additional protective layer and the design protective layer are both made by filling shear wall concrete in an aluminum die. The utility model is suitable for an adopt the outer wall to exempt from to plaster the construction of shear force wall outer wall body of technology, can have the protective steel bar layer and make its surfacing when the shear force wall shaping, outer protective steel bar layer thickness increases, need not the process of plastering outward, practices thrift the time limit for a project, reduces construction cost, and has kept the protection and the heat preservation effect of plastering layer to shear force wall structure wall body, satisfies the requirement of building outer maintenance structure durability and energy-conserving standard.
Description
Technical Field
The utility model relates to a building design and construction technical field, more specifically says that it relates to a durable energy-conserving exterior wall structure of exempting from to plaster.
Background
The outer wall of a building can be corroded by adverse factors such as wind, sunshine, rain and the like in the natural environment. The reinforced concrete structure constructed by adopting the traditional wood formwork process has poor rigidity of the wood formwork and poor surface flatness of concrete after pouring and tamping, so mortar plastering and leveling are generally adopted for decoration and finishing of the outer wall of a building in design specifications and standards, and construction of a finish coat is carried out after leveling. The plastering layer has the functions of protecting and insulating the structural layer, and the leveling can enable the interface of the building outer wall to be smooth, so that the requirement of the construction of the veneer layer is met; meanwhile, the thermal performance of the wall body can be improved, the structure of the building or the structure can not be corroded by adverse factors such as wind, rain, snow, sunshine, moisture, harmful gas and the like in the surrounding environment, the durability of the wall body is improved, and the service life of the building is prolonged.
In a natural environment, day and night temperature difference changes can cause the reinforced concrete structure to generate expansion and contraction deformation of temperature changes, and the larger the temperature difference is, the larger the corresponding deformation is; the continuous expansion and contraction deformation of the reinforced concrete can lead the micro cracks in the concrete to gradually develop into long cracks. Meanwhile, in hot high-temperature seasons, the rain shower is frequent, and after the reinforced concrete at high temperature is drenched by rain, the temperature drops suddenly, so that the structure generates larger temperature stress in a shorter time, and shrinkage cracks are also easy to generate. Meanwhile, the increase of the concentration of carbon dioxide in the atmospheric environment can accelerate the carbonization process of concrete. The hydration product calcium hydroxide in the concrete has protective effect on the reinforcing steel bars. There are defects such as pores, capillaries, and bubbles of various sizes in the concrete. When carbon dioxide in the air permeates pores and bubbles in the concrete and reacts with cement hydration products such as calcium hydroxide to generate calcium carbonate and other products, the alkalinity of the concrete is reduced, steel bars in the concrete are corroded, the cracking of the concrete is increased, and the durability of the structure is seriously influenced.
The elimination of the outer plastering layer of the outer wall increases the heat exchange between the main structure part of the building and the external natural environment, the expansion and contraction deformation amplitude is increased, the development of structural cracks is increased, the corrosion of rainwater can cause the corrosion of reinforcing steel bars, and the volume of rust is expanded, so that the concrete protective layer is cracked; and harmful gases such as moisture or carbon dioxide permeate to accelerate the corrosion of the reinforcing steel bars and the damage of the structure. Particularly, buildings in coastal areas are more susceptible, and corrosion of the steel bars is accelerated as seawater evaporates into chlorides in the air and enters the structure. Thereby reducing the durability of the structure.
In south China, such as areas hot in summer and warm in winter, an external wall internal thermal insulation system is adopted in the aspect of energy-saving design. The design standard of building energy conservation is based on residential buildings and public buildings constructed by traditional maintenance structures at the beginning of eighties, and energy-saving measures are added under the condition of indoor comfortable thermal environment.
The design of building energy-saving design standard for residential buildings in areas warm in summer and winter JGJ75-2012, 1.0.3 the design of building thermal engineering and air-conditioning heating ventilation of residential buildings in areas warm in summer and winter, which must adopt energy-saving measures, and controls the heating energy consumption of air conditioners within a specified range on the premise of ensuring the indoor thermal comfort environment. 3.0.4 residential buildings adopt reasonable building design, enhance the heat insulation and heat preservation performance of building enclosure structures and improve the energy efficiency ratio of air conditioners and heating equipment, and on the premise of ensuring the same indoor thermal environment, the total annual air conditioner and heating energy consumption is reduced by 50 percent compared with that before the energy conservation measures are not adopted. 4.0.7 the heat transfer coefficient and thermal inertia indexes of the roof and the outer wall of the residential building meet the specifications of the following table.
Heat transfer coefficient K (w/m 2 x K) of roof and external wall, thermal inertia index D
The thermal inertia index D is a dimensionless index representing the attenuation degree of the building envelope to the temperature wave.
According to the civil building thermal design specification GB50176-2016, the D (thermal inertia index) value of a multilayer maintenance structure is calculated according to the following formula:
D＝D1+D2+…+Dn＝R1S1+R2S2+…+RnSn
in the formula, R1R2 \8230Rnis the thermal resistance (m 2 k/w) of each layer material
S1S2 8230Sn is the heat storage coefficient (w/m 2 k) of each layer material
The heat transfer coefficient K value refers to the heat transferred in 1S through the area of 1 square meter under the condition of stable heat transfer, wherein the temperature difference of air at two sides of the enclosure structure is 1 degree.
Formula for calculating heat transfer coefficient K
K＝1/RO(W/(m2.k))
And (3) RO: heat transfer resistance of enclosure structure
In short, the building design takes the energy-saving index of the outer plastering layer into consideration when the energy-saving design of the outer protective structure of the building is taken into consideration.
Adopt the wood former construction technology among the traditional technology, concrete surface smoothness is relatively poor, and the surface needs to plaster the processing of making level, and the resource input is more, and the construction cycle is long, appears the outer wall finish coat that the layer hollowing of plastering brought in the later stage use simultaneously and drops, quality problems such as crack easily. The aluminum mould process has the advantages of short construction period, more times of repetition, low average use cost, convenience and high efficiency in construction, good stability, high bearing capacity, good concrete surface effect, low carbon, emission reduction and the like. Therefore, the prior art adopts the plastering-free process of the aluminum mould of the outer wall for construction, and can achieve the aims of reducing the investment of construction resources, shortening the construction period and reducing the quality problems of falling and cracking of the finish coat of the outer wall caused by hollowing of the later plastering layer. But the protection and heat preservation function of the plastering layer are neglected when the external wall aluminum mould plastering-free process is adopted, so that the protection outside the structural layer is lacked, the heat preservation function is reduced, and the durability of the structural layer is influenced.
SUMMERY OF THE UTILITY MODEL
To the characteristics that adopt the construction of aluminium mould technology, the utility model aims to provide a durable energy-conserving exterior wall structure of exempting from to plaster can pour the shaping when the concrete and have the protective steel bar layer and make its surfacing to need not the process of plastering behind the form removal, not only practice thrift the time limit for a project, reduce construction cost, improve the efficiency of construction, can remain the protection and the heat preservation effect of layer of plastering to shear force wall body in addition.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a durable energy-saving plastering-free outer wall structure comprises a shear wall body, an inner steel bar protection layer and an outer steel bar protection layer;
the shear wall body is formed by pouring an aluminum die process;
the inner steel bar protection layer is arranged on the inner wall of the shear wall body;
the outer steel bar protection layer is arranged on the outer wall of the shear wall body, and the thickness of the outer steel bar protection layer is larger than that of the inner steel bar protection layer; the outer steel bar protection layer comprises a design protection layer and an additional protection layer; the thickness of the designed protective layer is consistent with that of the inner steel bar protective layer; the thickness of the additional protective layer is consistent with that of the original plastering layer, and the additional protective layer and the designed protective layer are both made by filling shear wall concrete into an aluminum die.
Further setting: and a plurality of dividing joints for adapting to the temperature and humidity change of the natural environment are arranged on the surface of the outer steel bar protection layer.
Further setting: the thickness of the shear wall body is designed to be 200mm in a preset mode, the thickness of the inner steel bar protection layer is preset to be 15mm, the thickness of the additional protection layer is 15mm, the thickness of the outer steel bar protection layer is 30mm, and the total thickness of the shear wall body is 215mm.
Further setting: design of predetermineeing shear force wall body thickness is 200mm, predetermines the thickness of interior reinforcing bar protective layer is 15mm, the protective layer thickness is 10mm, then the thickness of outer reinforcing bar protective layer is 25mm, and total shear force wall body gross thickness is 210mm, and make level through thin screed-coat outside the outer reinforcing bar protective layer.
Further setting: and inner and outer steel bar protective layer cushion blocks are respectively arranged on the outer sides of the inner and outer steel bars of the shear wall body for erecting an inner aluminum mould and an outer aluminum mould.
Further setting: the outer steel bar protection layer cushion block and the inner steel bar protection layer cushion block are clamped on the outer steel bars of the shear wall body.
Further setting: the inner and outer steel bar protective layer cushion blocks are all provided with a plurality of cushion blocks and are arrayed in multiple rows and multiple columns along the X axis and the Y axis so as to ensure the thickness of the inner and outer steel bar protective layers during concrete pouring.
By adopting the technical scheme, the utility model discloses relative prior art compares, has following advantage:
1. the shaping is pour through the cooperation aluminium mould for the shaping goes out interior, outer reinforcing bar protective layer simultaneously after the shear force wall shaping, and outer reinforcing bar protective layer thickness is greater than interior reinforcing bar protective layer thickness, and the former layer of plastering in the outer shear force wall outside of additional protective layer substitution structure, the carbonization process that additional protective layer can effectual delay the concrete, makes shear force wall structure reinforcing bar can be in design life cycle, normal work in alkaline environment. The scheme reserves the protection and heat preservation effects of the original plastering layer on the shear wall body, and meets the requirements of the durability and energy-saving design of the external maintenance structure of the building;
2. the protective layer and the additional protective layer are designed to form an outer steel bar protective layer, the protective layer with a certain thickness is directly formed after the outer steel bar protective layer is cast and formed along with the shear wall, the effect of good surface evenness of the concrete constructed by the aluminum die is matched, and the plastering layer construction can be omitted; the advantages of large rigidity and smooth surface of the aluminum mould are fully exerted, the protection effect on the steel bar, which is formed by the steel bar protection layer, the plastering layer and the facing layer and arranged in the design specification and standard, is simplified into two ways, namely the protection layer (the original steel bar protection layer and the additional protection layer) and the facing layer, so that the construction period is saved, the construction cost is reduced, the construction efficiency is improved, and meanwhile, the quality problems of falling, cracking and the like of the facing layer of the outer wall, which are caused by hollowing of the plastering layer in the later period, can be eliminated;
3. by adding the additional protective layer, dividing joints are arranged according to the requirements of design or local standards on the plastering layer so as to adapt to the deformation caused by the temperature and humidity change of the external natural environment in the later use process.
Drawings
Fig. 1 is a partial schematic structural view of the durable energy-saving plastering-free external wall structure of the present invention in which a shear wall is cast;
fig. 2 is an enlarged schematic view of a point a in fig. 1.
In the figure: 1. shear wall reinforcing steel bars; 2. an inner reinforcement protective layer; 3. an outer reinforcement protective layer; 31. designing a protective layer; 32. a protective layer is added.
Detailed Description
The durable and energy-saving plastering-free exterior wall structure is further explained with reference to fig. 1 to 2.
A durable energy-saving plastering-free outer wall structure is shown in figures 1 and 2 and comprises a shear wall body, an inner reinforcing steel bar protection layer 2 and an outer reinforcing steel bar protection layer 3; the shear wall body is formed by pouring an aluminum die process; the inner steel bar protective layer 2 and the outer steel bar protective layer 3 are both synchronously cast by an aluminum die process and are respectively positioned on the inner wall and the outer wall of the shear wall body so as to protect the steel bars of the shear wall body, and the surface is flat and provided with an additional protective layer 32 after casting molding without plastering layer construction.
Wherein, the thickness of the outer steel bar protective layer 3 is larger than that of the inner steel bar protective layer 2; the outer reinforcement protection layer 3 includes a design protection layer 31 and an additional protection layer 32; the thickness of the protective layer 31 is designed to be consistent with that of the inner steel bar protective layer 2; the inner reinforcement protection layer 2, the additional protection layer 32 and the design protection layer 31 are all made by filling shear wall concrete in an aluminum mold. Furthermore, a plurality of dividing seams which are adapted to the temperature and humidity change of the natural environment are arranged in the additional protective layer 32, the dividing seams are arranged in parallel, and the distance between the dividing seams is set according to the design or local standard.
When the shear wall is subjected to aluminum mould process construction, inner and outer steel bar protective layer cushion blocks are respectively arranged on the inner and outer side walls of the shear wall so as to be used for erecting an inner aluminum mould and an outer aluminum mould; specifically, the outer reinforcing steel bar protective layer 3 cushion blocks and the inner reinforcing steel bar protective layer 2 cushion blocks are clamped on the outer reinforcing steel bars of the shear wall body, and the inner reinforcing steel bar protective layer cushion blocks and the outer reinforcing steel bar protective layer cushion blocks are multiple and are arrayed into multiple rows and multiple columns along the X axis and the Y axis so as to ensure the thickness of the inner reinforcing steel bar protective layer and the outer reinforcing steel bar protective layer during concrete pouring.
The construction process of the durable energy-saving plastering-free outer wall structure specifically comprises the following steps:
firstly, bouncing out an outer shear wall body side line according to a preset drawing to form a shear wall reinforcing steel bar 1 binding area, and bouncing out an outer plastering layer side line on the outer side of the shear wall outer wall body side line to install an inner aluminum mould and an outer aluminum mould; wherein, the side line of the inner wall body is provided with an inner aluminum mould, and the side line of the outer plastering layer is provided with an outer aluminum mould;
then binding the reinforcing steel bars to a pouring area of the shear wall body to form the reinforcing steel bars 1 of the shear wall;
then, respectively arranging inner and outer steel bar protective layer cushion blocks at the inner and outer sides of the shear wall steel bar 1 so as to form a protective layer interval after the inner and outer aluminum molds are erected; the inner and outer steel bar protective layer cushion blocks are arranged in a plurality of rows and columns along the X axis and the Y axis to ensure the thickness of the inner and outer steel bar protective layers during concrete pouring; the outer steel bar protective layer cushion block and the inner steel bar protective layer cushion block are clamped on the outer steel bars;
then, respectively installing an inner aluminum mould and an outer aluminum mould at two sides of the steel bar 1 of the shear wall, and respectively abutting the inner walls of the inner aluminum mould and the outer aluminum mould against the inner steel bar protective layer cushion block and the outer steel bar protective layer cushion block and the cement stay (the length is the preset thickness of the shear wall plus the thickness of the plastering layer); protective layer intervals are arranged between the inner aluminum mould and the outer aluminum mould and between the shear wall steel bars 1; and fixing the template by adopting the through-wall counter-pulling screw to ensure that the thickness of the formed concrete is the sum of the thickness of the preset shear wall and the thickness of the plastering layer.
Pouring concrete into the built aluminum mold to form a shear wall, and filling the protective layer intervals with the concrete to respectively form an inner steel bar protective layer 2 and an outer steel bar protective layer 3 on the inner side and the outer side of the shear wall; wherein, the outer reinforcement protection layer 3 comprises a design protection layer 31 and an additional protection layer 32; the thickness of the protective layer 31 is designed to be consistent with that of the inner steel bar protective layer 2; the value that the thickness of the outer steel bar protection layer 3 is larger than that of the inner steel bar protection layer 2 is the thickness of the additional protection layer 32, namely the thickness of the additional protection layer is consistent with that of the original plastering layer, and the additional protection layer and the designed protection layer are both made by filling shear wall concrete into an aluminum mould; through the thickness of the additional protective layer 32, the outer steel bar protective layer 3 has the protection and heat preservation effects of the original plastering layer on the structural layer after being poured and formed along with the shear wall body, and is combined with aluminum mould construction to enable the surface of the poured concrete to be flat, so that a plastering procedure is not needed after the mould is removed, the construction period is saved, the material waste is reduced, the construction cost is reduced, the design and specification requirements can be met, and the protection and heat preservation effects of the plastering layer on the shear wall are kept;
and finally, dismantling the inner aluminum mould and the outer aluminum mould to obtain the shear wall with the inner and outer steel bar protection layers, wherein the aluminum mould is adopted to level the surface of the shear wall without plastering and leveling treatment, and the protection layer is provided for protection.
In this embodiment, in the portion of the thickness of the additional protective layer 32, the dividing lines are provided according to the design or local standard.
In this embodiment, the thickness of the preset design shear wall is 200mm, the thickness of the preset inner reinforcement protection layer 2 is 15mm, the thickness of the additional protection layer is 15mm (the thickness is the same as that of the plastering layer, and the thickness of the plastering layer is different due to different materials of the facing layer, and is assumed to be 15 mm), the thickness of the outer reinforcement protection layer 3 is 30mm, and the total thickness of the total shear wall body is 215mm. So that there is an additional protective layer 32 thickness of 15mm thickness within the outer protective layer of rebar 3.
The working principle is as follows: the advantages of the aluminum mould process are exerted, and the advantages that the surface of the concrete wall constructed by the aluminum mould has good impression, and the flatness and the verticality meet the requirements of construction acceptance standards can be utilized; form the protective layer interval between the time through installing inside and outside aluminium mould and shear force wall reinforcing bar 1 for when the shaping is pour to the shear force wall, shaping reinforcing bar protective layer simultaneously, and increase outer reinforcing bar protective layer 3's thickness, make this thickness have design protective layer 31 thickness and additional protective layer 32 thickness, thereby can effectively improve the durability of structure, the life of extension building avoids later maintenance in-process plastering layer hollowing, the problem that drops to produce. Meanwhile, the requirements of architectural design are met, and the requirements of structural durability and energy-saving design standards are met.
In the second embodiment, the difference between the first embodiment and the second embodiment is that the thickness of the preset design shear wall is 200mm, the thickness of the preset inner reinforcement protection layer 2 is 15mm, the thickness of the additional protection layer is 10mm, the thickness of the outer reinforcement protection layer 3 is 25mm, and the total thickness of the shear wall is 210mm. And the outer steel bar protection layer is leveled through a thin leveling layer.
According to the specification of concrete structure design Specification GB50010-2010, a concrete structure with the service life of 50 years is designed, and the thickness of a protective layer of the steel bar at the outermost layer meets the specification of a corresponding chart; the protective layer thickness of the outermost layer of steel bars should not be less than 1.4 times of the numerical value in the chart when designing a concrete structure with the service life of 100 years. This indicates that an increase in the thickness of the steel reinforcement protective layer can increase the durability of the structure and extend the life of the building. Meanwhile, it can be said that the additional protective layer 32 on the outer wall surface has a protective effect on the structural layer, and the plastering layer of the building design also has a protective effect on the structural layer.
In this embodiment, the thickness of the outer steel bar protection layer 3 has the designed protection layer thickness required by the specification, and the thickness of the additional protection layer 32 is increased, so that the additional protection layer 32 is directly formed during pouring to protect the structural layer, and plastering layer construction is not required after the shear wall is formed, so that the construction period is shortened, the construction cost is reduced, the construction efficiency is improved, and meanwhile, the protection and heat preservation effects of the plastering layer specified by the specification on the shear wall structure are met.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that modifications and embellishments within the scope of the present disclosure may be made by those skilled in the art without departing from the principles of the present disclosure.
Claims (7)
1. A durable energy-saving plastering-free outer wall structure is characterized by comprising a shear wall body, an inner steel bar protection layer and an outer steel bar protection layer;
the shear wall body is formed by pouring an aluminum die process;
the inner steel bar protection layer is arranged on the inner wall of the shear wall body;
the outer steel bar protection layer is arranged on the outer wall of the shear wall body, and the thickness of the outer steel bar protection layer is larger than that of the inner steel bar protection layer; the outer steel bar protection layer comprises a design protection layer and an additional protection layer; the thickness of the designed protective layer is consistent with that of the inner steel bar protective layer; the thickness of the additional protective layer is consistent with that of the original plastering layer, and the additional protective layer and the designed protective layer are both made by filling shear wall concrete into an aluminum die.
2. The durable energy-saving plastering-free exterior wall structure according to claim 1, wherein the outer reinforcement protection layer is provided with a plurality of dividing joints for adapting to the temperature and humidity change of the natural environment.
3. The durable energy-saving plastering-free exterior wall structure of claim 1, wherein the shear wall thickness is 200mm, the inner reinforcement protection layer is 15mm, the additional protection layer is 15mm, the outer reinforcement protection layer is 30mm, and the total shear wall total thickness is 215mm.
4. The durable energy-saving plastering-free exterior wall structure according to claim 1, wherein the shear wall thickness is 200mm, the inner reinforcement protection layer is 15mm, the additional protection layer is 10mm, the outer reinforcement protection layer is 25mm, the total thickness of the shear wall is 210mm, and the outer reinforcement protection layer is leveled by a thin leveling layer.
5. The durable energy-saving plastering-free exterior wall structure as claimed in claim 1, wherein the outer sides of the inner and outer reinforcing bars of the shear wall body are respectively provided with inner and outer reinforcing bar protective layer cushion blocks for erecting inner and outer aluminum molds.
6. The durable energy-saving plastering-free exterior wall structure of claim 5, wherein the outer reinforcement protection layer cushion block and the inner reinforcement protection layer cushion block are clamped on the outer reinforcement of the shear wall body.
7. The durable energy-saving plastering-free exterior wall structure as claimed in claim 6, wherein the inner and outer reinforcement protection layer blocks are provided in plural numbers and arranged in rows and columns along the X-axis and Y-axis to secure the thickness of the inner and outer reinforcement protection layers when concrete is poured.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222379201.XU CN218405931U (en) | 2022-09-07 | 2022-09-07 | Durable energy-saving plastering-free outer wall structure |
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| CN202222379201.XU CN218405931U (en) | 2022-09-07 | 2022-09-07 | Durable energy-saving plastering-free outer wall structure |
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