CN113585453A

CN113585453A - Construction method of anti-seismic house building

Info

Publication number: CN113585453A
Application number: CN202110840085.4A
Authority: CN
Inventors: 梁贵传; 林亨; 卢成发; 黄浩
Original assignee: Guangdong Wanye Construction Group Co ltd
Current assignee: Guangdong Wanye Construction Group Co ltd
Priority date: 2021-07-24
Filing date: 2021-07-24
Publication date: 2021-11-02

Abstract

The invention relates to the field of building construction, and particularly discloses a construction method of an anti-seismic house building, which comprises the following steps: step 1), building a pouring template; step 2), pasting a reinforcing net on the inner wall of the pouring template; step 3), placing a reinforcing mesh in the pouring template; step 4), pouring anti-crack concrete mixture; step 5), curing and demolding; the reinforcing net is prepared from the following components in parts by mass: 100 parts of polycarbonate; 50-60 parts of polypropylene ethylene; 15-20 parts of ethyl cellulose; 0.2 to 0.3 portion of antioxidant. The invention has the advantage of improving the anti-seismic performance of the house building.

Description

Construction method of anti-seismic house building

Technical Field

The invention relates to the field of building construction, in particular to a construction method of an anti-seismic house building.

Background

The house is the place that people live, is the place that shelters from wind and rain for people, and along with the increase of city population, population density rises, and land resource is not enough to satisfy population needs, leads to the house height to be higher and higher for increase the housing density of land unit area, thereby alleviate the problem that the housing demand that population density rises and lead to rises.

However, as the height of the house increases, when an earthquake disaster occurs, the house is swung and shaken up and down by the movement of the earth crust, particularly, the swinging movement is increased in the width of swinging of a portion farther from the ground surface based on the fixing point of the house on the ground surface, and the house is broken in the swinging process if the house building does not have sufficient strength.

The existing building construction basically takes a concrete structure as a main part, the anti-cracking performance of a concrete material is poor, when the building swings greatly, a bending deformation part can receive pressure or tensile force, and the compressed part has stronger compression resistance and can resist the pressure, but the tensile part can crack due to insufficient anti-cracking capacity of the concrete and finally becomes a crack.

However, in general reinforced concrete, the ratio of the cross-sectional area of the reinforcing steel bars is very low, so that the concrete far away from the reinforcing steel bars still has the risk of cracking, which is usually reflected in that the concrete is locally cracked and peeled off, and the peeled concrete is knocked off from high altitude, and if the impact of knocking off acts on the building construction, the building construction is further damaged, so that the building construction structure is further damaged, finally, a vicious circle is formed, and the building is damaged, therefore, the earthquake-proof performance of the building construction is difficult to meet the requirement, and therefore, the space is improved.

Disclosure of Invention

In order to improve the anti-seismic performance of the house building, the application provides an anti-seismic house building construction method.

The application provides an anti-seismic house building construction method adopts the following technical scheme:

an earthquake-resistant house building construction method comprises the following steps:

step 1), building a pouring template;

step 2), pasting a reinforcing net on the inner wall of the pouring template;

step 3), placing a reinforcing mesh in the pouring template;

step 4), pouring anti-crack concrete mixture;

step 5), curing and demolding;

the reinforcing net is prepared from the following components in parts by mass:

100 parts of polycarbonate;

50-60 parts of polypropylene ethylene;

15-20 parts of ethyl cellulose;

0.2 to 0.3 portion of antioxidant.

Preferably, the reinforcing net is prepared from the following components in parts by mass:

100 parts of polycarbonate;

55-58 parts of polypropylene ethylene;

16-18 parts of ethyl cellulose;

0.22-0.25 part of antioxidant.

By adopting the technical scheme, the reinforcing mesh is adhered to the inner wall of the pouring template, so that after the anti-crack concrete mixture is poured, the reinforcing mesh is positioned at the periphery of the concrete mixture, the cured concrete building structure can form a reinforced concrete structure with the interior reinforced by the reinforcing mesh and the surface reinforced by the reinforcing mesh, and because the surface of the concrete building structure is reinforced by the reinforcing mesh, when the concrete building structure is stressed and deformed, the reinforcing mesh provides tensile resistance, so that the concrete of the concrete building structure far away from the reinforcing mesh is difficult to crack, and the inside and the outside of the concrete building structure have stronger tensile and anti-crack performance by utilizing the matching of the reinforcing mesh and the reinforcing mesh, therefore, the manufactured building is difficult to crack and peel off concrete blocks, and even if partial concrete blocks are peeled off, the peeled concrete blocks are adhered to the reinforcing mesh, the building structure is not easy to further impact the building structure due to the limitation of the reinforcing net, so that the building can better resist earthquake in the earthquake, the structural stability is better kept, and the earthquake resistance of the building can be greatly improved.

Through adopting polycarbonate, polyethylene propylene, ethyl cellulose make the reinforcement net, make the tensile strength of reinforcement net higher, shock resistance is stronger, and because the reinforcement net is located concrete building structure surface, make the reinforcement net through macromolecular material, can not be harmful to the erosion of water, the outer wall heat preservation etc. of building surface can be under construction moreover, there is better effect of blockking to illumination, heat etc. consequently, the difficult phenomenon such as the thermal oxidation ageing that appears of reinforcement net makes the reinforcement net durable lasting, the effect of protection building is comparatively lasting.

Preferably, the reinforcing net comprises warps and wefts, the diameters of the warps and the wefts are 0.8-1mm, the vertical distance between every two adjacent warps is 1-2cm, and the vertical distance between every two adjacent wefts is 1-2 cm.

Through adopting above-mentioned technical scheme, through adopting suitable diameter and suitable interval for the tensile strength of reinforcement net is stronger, and the effect preferred of reinforcement concrete building result can also avoid the material extravagant simultaneously.

Preferably, in the step 2), the reinforcing net is flatly attached to the inner wall of the pouring template.

Through adopting above-mentioned technical scheme, through the smooth laminating of reinforcement net on pouring the template, guarantee that the reinforcement net bonds smoothly on concrete building structure's surface, can arouse the tensile property of reinforcement net at once when guaranteeing concrete building structure to take place deformation, guarantee the effect of reinforcement.

Preferably, in the step 2), the reinforcing net is attached to the pouring template through a double faced adhesive tape.

Through adopting above-mentioned technical scheme, through the laminating of double faced adhesive tape for easily dismantle when dismantling the template, difficult to dismantle because viscidity is too big, convenient construction operation.

Preferably, the anti-crack concrete mixture comprises the following components in parts by weight:

100 parts of cement;

29-30 parts of water;

9.5-10.5 parts of fly ash;

115 portions of sand and 120 portions of sand;

stone 225-230 parts;

0.5-1 part of water reducing agent;

0.3-0.5 part of potassium fluoride;

0.1 to 0.2 portion of sodium fluoride.

By adopting the technical scheme, potassium fluoride and sodium fluoride are added into the anti-crack concrete mixture, so that the anti-crack concrete prepared from the anti-crack concrete mixture has better anti-crack performance, and the anti-crack reinforcing effect of the tensile reinforcement mesh and the reinforcement mesh is matched, so that the prepared concrete building structure is less prone to cracking and has more stable structure.

In contrast, the inventor guesses that the addition of potassium fluoride and sodium fluoride can cause fluorine ions to exist in a cement system, the fluorine ions are used as impurities, calcium hydroxide is caused to be separated out and crystallized, crystals form a needle-like structure instead of a hexagonal sheet structure, the calcium hydroxide enriched on the interface of the set cement and the aggregate is high in strength and not easy to damage, weak links at the interface of the set cement and the aggregate are reduced, the crack resistance of the prepared crack-resistant concrete is good, the potassium fluoride and the sodium fluoride are matched according to a specific proportion, the concentration of potassium ions and sodium ions in the cement system can be effectively controlled, other influences on the crystal form of the calcium hydroxide caused by the concentration of the potassium ions and the sodium ions are avoided, the quantity of the obtained needle-like crystals is the largest, and the effect of improving the crack resistance of the concrete is the best.

Preferably, the anti-crack concrete mixture further comprises the following components in parts by weight:

0.5-0.8 part of polyvinyl alcohol fiber.

By adopting the technical scheme, the polyvinyl alcohol fiber is added to further provide tensile resistance in the concrete structure, so that the prepared concrete structure has better anti-cracking performance, the prepared building structure is not easy to crack, the stability is good, and the anti-seismic performance is better.

Preferably, the water reducing agent is a naphthalene water reducing agent.

By adopting the technical scheme, the naphthalene water reducer is adopted, so that the water reducing effect is good, the crystallization form of calcium hydroxide is not easily influenced, the condition of generating negative influence on the anti-cracking performance of the manufactured concrete structure is not easily caused, and the manufactured house building has better anti-seismic performance.

In summary, the present application has the following beneficial effects:

1. because the reinforcing net is adhered to the inner wall of the pouring template, after the anti-crack concrete mixture is poured, the reinforcing net is positioned at the periphery of the concrete mixture, the cured concrete building structure can form a reinforced concrete structure with the interior reinforced by the reinforcing net and the surface reinforced by the reinforcing net, because the surface of the concrete building structure is reinforced by the reinforcing net, when the concrete building structure is stressed and deformed, the reinforcing net provides tensile resistance, so that the concrete of the concrete building structure far away from the reinforcing net is difficult to crack, and the inside and the outside of the concrete building structure have stronger tensile resistance and anti-crack performance by utilizing the matching of the reinforcing net and the reinforcing net, thereby the condition that the concrete blocks crack and peel off is difficult to occur in the manufactured building, even if part of the concrete blocks peel off, the peeled concrete blocks can be adhered to the reinforcing net, the building structure is not easy to further impact the building structure due to the limitation of the reinforcing net, so that the building can better resist earthquake in the earthquake, the structural stability is better kept, and the earthquake resistance of the building can be greatly improved.

2. Preferentially make the reinforcement net through adopting polycarbonate, polyethylene propylene, ethyl cellulose in this application, make the tensile strength of reinforcement net higher, shock resistance is stronger, and because the reinforcement net is located concrete building structure surface, make the reinforcement net through macromolecular material, can not be afraid of the erosion of water, the outer wall heat preservation etc. can be under construction to the building surface in addition, to illumination, there is better effect that blocks such as heat, consequently, the difficult phenomenon such as the hot oxygen ageing that appears of reinforcement net makes the reinforcement net durable lasting, the effect of protection building is comparatively lasting.

3. Preferably in this application through add potassium fluoride, sodium fluoride in anti-crack concrete mixture for anti-crack concrete that anti-crack concrete mixture made has better anti-crack performance, cooperates the anti-crack reinforcement effect of tensile of reinforcing bar net and reinforcement net, makes the concrete building structure who makes more difficult the phenomenon that the fracture appears, and the structure is more stable.

Detailed Description

The present application will be described in further detail with reference to examples.

The information on the source of each raw material in the following preparation examples, comparative preparation examples and examples is shown in Table 1.

TABLE 1

Raw materials	Source information
		Polycarbonate resin	Germany Bayer, designation 2456
Polypropylene ethylene	Italy Eini, model 058, ethylene propylene rubber
		Ethyl cellulose	Shenzhen Lefu biotechnology Limited, content 99.9%
Antioxidant agent	Shandong Polymer chemistry Ltd, antioxidant 1010
		Cement	Jun brand ordinary portland cement PO42.5R of Yanxin Yonggang group Co., Ltd
Fly ash	Hangzhou good quality calciumFirst grade fly ash from products Ltd
		Sand	Lingshou county constant-spread mineral processing plant, river sand
Stone (stone)	Yaotai mineral products Ltd, Lingshu county, average particle diameter 8mm
		Water reducing agent	Naphthalene series water reducer of Jinnanchenxing chemical Co., Ltd
Potassium fluoride	Shandong national chemical Co., Ltd
		Sodium fluoride	Shandong national chemical Co., Ltd
Polyvinyl alcohol fiber	Shandong Haosen New Material Co., Ltd., diameter 15 μm, length 6mm

Preparation examples 1 to 5

A reinforcing mesh made from the following components:

polycarbonate, polypropylene ethylene, ethyl cellulose and an antioxidant.

In preparation examples 1 to 5, the amounts (in Kg) of the respective raw materials added are specified in Table 2.

TABLE 2

In preparation examples 1 to 5, the reinforcing mesh was prepared as follows:

weighing the raw materials according to the table 2, then putting the polycarbonate, the polypropylene, the ethyl cellulose and the antioxidant into a stirrer, stirring for 5min at the rotating speed of 120r/min to obtain a mixed master batch, then putting the mixed master batch into a screw extruder, extruding the mixed master batch into a mold through the screw extruder at the extrusion temperature of 280 ℃, cooling for molding, cooling to room temperature, and demolding to obtain the reinforcing mesh.

The reinforcing net is composed of warps and wefts, wherein the warps and the wefts are mutually perpendicular, in preparation examples 1-4, the diameters of the warps and the wefts are 0.8mm, the perpendicular distance of adjacent warps is 1cm, the perpendicular distance of adjacent wefts is 1cm, in preparation example 5, the diameters of the warps and the wefts are 1mm, the perpendicular distance of adjacent warps is 2cm, and the perpendicular distance of adjacent wefts is 2 cm.

Comparative preparation example 1

A reinforcing mesh, differing from preparation example 5 only in that:

polypropylene and ethyl cellulose were replaced by polycarbonate in equal amounts.

Comparative preparation example 2

A reinforcing mesh, differing from preparation example 5 only in that:

the ethyl cellulose was replaced by polycarbonate in equal amounts.

Comparative preparation example 3

A reinforcing mesh, differing from preparation example 5 only in that:

the polypropylene was replaced by polycarbonate in equal amounts.

Preparation examples 6 to 8

An anti-crack concrete mixture comprises the following components:

cement, water, fly ash, sand, stone, a water reducing agent, potassium fluoride and sodium fluoride.

The specific amounts (in Kg) of the ingredients used in preparation examples 6 to 8 are specified in Table 3.

TABLE 3

	Preparation example 6	Preparation example 7	Preparation example 8
				Cement	100	100	100
Water (W)	29	30	29.5
				Fly ash	9.5	10.5	10
Sand	115	120	118
				Stone (stone)	225	230	228
Water reducing agent	0.5	1	0.7
				Potassium fluoride	0.3	0.5	0.4
Sodium fluoride	0.1	0.2	0.15

In preparation examples 6 to 8, the preparation method of the anti-crack concrete mix was as follows:

putting cement, water, fly ash, a water reducing agent, potassium fluoride and sodium fluoride into a stirring kettle, stirring for 10min at a rotating speed of 80r/min, putting sand and stone at a rotating speed of 60r/min, and stirring for 15min to obtain the anti-crack concrete mixture.

Preparation examples 9 to 11

Compared with the preparation example 8, the anti-crack concrete mixture is only different in that:

the anti-crack concrete mixture also comprises polyvinyl alcohol fibers.

In preparation examples 9 to 11, the specific amounts (in Kg) of polyvinyl alcohol fibers to be added are shown in Table 4.

TABLE 4

	Preparation example 9	Preparation example 10	Preparation example 11
				Polyvinyl alcohol fiber	0.5	0.8	0.6

In preparation examples 9 to 11, polyvinyl alcohol fibers were put into a stirring vessel together with cement, water, fly ash, a water reducing agent, potassium fluoride, and sodium fluoride and mixed uniformly.

Comparative preparation example 4

potassium fluoride and sodium fluoride are replaced by sand in equal amount.

Comparative preparation example 5

sodium fluoride was replaced by an equal amount of sand.

Comparative preparation example 6

potassium fluoride was replaced by an equal amount of sand.

Example 1

step 1), pouring a template of a large building structure according to the construction steps.

And 2) pasting a reinforcing net on the inner wall of the pouring template by using a double faced adhesive tape, flatly pasting the reinforcing net on the pouring template and completely covering the inner wall of the pouring template.

And 3), placing a reinforcing mesh in the range wrapped by the pouring template, wherein the reinforcing mesh is positioned in the central area of the pouring area wrapped by the pouring template.

And 4), pouring the anti-crack concrete mixture, tamping, standing for 10min, and pouring again until the mixture is flush with the top of the pouring template.

And 5), standing for 10 hours, demolding, and watering and curing for 28 days.

And repeating the steps until all structural components of the house building are constructed, namely completing the construction of the frame structure of the house building, and then constructing an outer wall, such as pasting a heat insulation layer, a waterproof layer, an outer wall surface and the like, so as to complete the construction of the house building.

In this example, the reinforcing mesh of preparation example 1 was used.

In this example, the anti-crack concrete mixture was 6.

Example 2

Compared with the embodiment 1, the construction method of the earthquake-resistant house building is only different in that:

in this example, the reinforcing mesh of preparation example 2 was used.

In this example, 7 anti-crack concrete mixture was used as the anti-crack concrete mixture.

Example 3

in this example, the reinforcing mesh of preparation example 3 was used.

In the embodiment, the anti-crack concrete mixture is 8.

Example 4

in this example, the reinforcing mesh of preparation example 4 was used.

In this example, 9 of the anti-crack concrete mixture was used.

Example 5

in this example, the reinforcing mesh of preparation example 5 was used.

In this example, 10 pieces of the anti-crack concrete mixture were used.

Example 6

in this example, the reinforcing mesh of preparation example 5 was used.

In this example, 11 of the anti-crack concrete mixture was used.

Experiment 1

The tensile strength of the plastic specimens produced from the compounded master batches of production examples 1 to 5 and comparative production examples 1 to 3 was measured in accordance with GBT1040-2006 "measurement of tensile Properties of plastics".

Experiment 2

The Izod impact strength (notched) of the plastic samples prepared from the compounded master batches of production examples 1 to 5 and comparative production examples 1 to 3 was measured in accordance with GBT1843-2008 "measurement of Izod impact Strength of Plastic".

Experiment 3

According to standard GB/T50081-2016 of common concrete mechanical property test method, the 7d compressive strength, 28d compressive strength and 28d cleavage tensile strength of concrete samples prepared from the anti-crack concrete mixture of the preparation examples 6-11 and the comparative preparation examples 4-6 are detected.

The specific assay data for experiments 1-2 are detailed in Table 5.

The specific assay data for experiment 3 is detailed in table 6.

TABLE 5

According to table 5, the comparison of the data of preparation example 5 and comparative preparation examples 1-3 shows that adding both polystyrene and ethylcellulose to polycarbonate effectively increases the tensile strength and the cantilever beam impact strength of the prepared sample, i.e. the prepared reinforcing mesh has strong tensile strength, protects concrete from the surface of concrete structure, makes the concrete not easy to crack at the part far away from the reinforcing mesh, and the reinforcing mesh has strong impact resistance, is not easy to break during vibration and is not easy to break when being impacted by external force, and protects concrete structure permanently, so that the earthquake resistance of the prepared building is strong.

TABLE 6

According to the comparison of the data of the preparation example 8 and the comparative preparation examples 4-6 in the table 6, potassium fluoride and sodium fluoride are added into the anti-crack concrete mixture, so that the compressive strength and the splitting tensile strength of the prepared concrete sample can be effectively improved, particularly the splitting tensile strength is obviously improved, and the house prepared from the anti-crack concrete mixture has a stable structure, is not easy to crack and has better anti-seismic performance.

According to the comparison of the data of the total preparation example 8 and the preparation examples 9-11 in the table 6, the polyvinyl alcohol fiber is added into the anti-crack concrete mixture, so that the anti-compression and anti-crack performance of the sample can be further improved, and the prepared house building is more stable and has better anti-seismic performance.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. An earthquake-resistant house building construction method is characterized in that: the method comprises the following steps:

step 1), building a pouring template;

step 2), pasting a reinforcing net on the inner wall of the pouring template;

step 3), placing a reinforcing mesh in the pouring template;

step 4), pouring anti-crack concrete mixture;

step 5), curing and demolding;

the reinforcing net is prepared from the following components in parts by mass:

100 parts of polycarbonate;

50-60 parts of polypropylene ethylene;

15-20 parts of ethyl cellulose;

0.2 to 0.3 portion of antioxidant.

2. An earthquake-resistant building construction method according to claim 1, characterized in that: the reinforcing net is prepared from the following components in parts by mass:

100 parts of polycarbonate;

55-58 parts of polypropylene ethylene;

16-18 parts of ethyl cellulose;

0.22-0.25 part of antioxidant.

3. An earthquake-resistant building construction method according to claim 1 or 2, characterized in that: the reinforcing net comprises warp and weft, the diameter of the warp and the weft is 0.8-1mm, the vertical distance between every two adjacent warps is 1-2cm, and the vertical distance between every two adjacent wefts is 1-2 cm.

4. An earthquake-resistant building construction method according to claim 3, characterized in that: in the step 2), the reinforcing net is flatly attached to the inner wall of the pouring template.

5. An earthquake-resistant building construction method according to claim 4, characterized in that: and in the step 2), the reinforcing net is attached to the pouring template through the double faced adhesive tape.

6. An earthquake-resistant building construction method according to claim 1 or 2, characterized in that: the anti-crack concrete mixture comprises the following components in parts by weight:

100 parts of cement;

29-30 parts of water;

9.5-10.5 parts of fly ash;

115 portions of sand and 120 portions of sand;

stone 225-230 parts;

0.5-1 part of water reducing agent;

0.3-0.5 part of potassium fluoride;

0.1 to 0.2 portion of sodium fluoride.

7. An earthquake-resistant building construction method according to claim 6, characterized in that: the anti-crack concrete mixture further comprises the following components in parts by weight:

0.5-0.8 part of polyvinyl alcohol fiber.

8. An earthquake-resistant building construction method according to claim 6, characterized in that: the water reducing agent is a naphthalene water reducing agent.