CN103979891B - Assembly-type enclosure wall and preparation method thereof - Google Patents

Abstract

The invention discloses a prefabricated fence and a preparation method thereof, comprising a cup base, ground beams, wall panels, top pressure, wind-resistant columns and column caps, the wall panels, top pressure and column caps are made of fluid ultra-high performance inorganic powder For concrete pouring, the fluid ultra-high performance inorganic powder concrete includes the following raw material components in parts by weight: 500-650 parts of low-alkali Portland cement or ordinary Portland cement; 85-120 parts of silica fume; Class II fly ash 115~145 parts; slag powder 175~215 parts; river sand 1050~1250 parts; superplasticizer 26~32 parts; water 130~145 parts; direct copper-plated steel fiber 100~140 parts. The invention has beautiful appearance, high compressive and flexural strength, and light weight, which is 1/3-1/5 of the weight of ordinary concrete masonry ditch or concrete pouring ditch.

Description

A kind of prefabricated fence and preparation method thereof

technical field

The invention relates to enclosure walls in substation engineering, in particular to an assembled enclosure wall and a preparation method thereof.

Background technique

With the tight construction period and high quality requirements of modern construction projects, in construction projects, especially in substation projects, the construction of enclosure walls is increasingly required to have a short construction period but good construction effects. Most of the wall construction in the prior art adopts masonry walls, that is, bricklayers use cement wall bricks and other materials to build the required walls. This kind of walls has short service life, high maintenance costs, unsightly appearance, and long construction period.

The Chinese patent "A Low-Cost Active Powder Concrete and Its Preparation Method" with application number 200910060802.0 discloses an active powder concrete with a mass ratio of 0.52~0.58:0.16~0.18:0.10~0.16:0.13~0.16:0.012~ 0.018:0.9~1.1:0.14~0.18:0.156~0.234 Portland cement, steel slag powder, fly ash, silica fume, superplasticizer, river sand, mixing water and steel fiber. The patent adds steel slag as a mineral admixture, and its resistance to chloride ion penetration in the early stage of concrete is lower than that of pure cement concrete, and its resistance to chloride ion penetration in the later stage is higher than that of pure cement concrete. However, under the same dosage, steel slag The performance of f-CaO is not as good as that of fly ash and slag. In addition, a small amount of CaO in steel slag exists in free form, f-CaO hydrates to generate Ca(OH) ₂ , and the volume increases by 1.98 times, resulting in poor stability of steel slag.

The Chinese patent "Reactive Powder Concrete Mixed with Slag" with the application number of 200810019337.1 discloses a reactive powder concrete mixed with slag. The weight ratio of its components relative to Portland cement is: Portland cement: 1; Slag: 0.40~0.60 ; Silicon powder: 0.20~0.35; Quartz powder: 0.20~0.35; River sand: 1.20~1.60; Water: 0.20~0.28; Water reducer: 0.02~0.03. The active powder concrete disclosed in this patent has the disadvantages of poor pumpability, poor impermeability, and poor impact resistance.

The Chinese patent "High Durability and High Strength Active Powder Concrete Electric Pole" with application number 200710055438.X discloses that the raw material formula of a high durability and high strength active powder concrete electric pole is a thin round shape with a diameter of 0.22 mm and a length of 12 to 15 mm. 100-140 parts of copper-plated steel fiber, 690-720 parts of ordinary portland cement, 160-200 parts of silicon powder with an average particle size of 0.31 μm, 21-25 parts of non-naphthalene-based superplasticizer, 170-190 parts of water Parts, 1110~1190 parts of fine quartz sand with a particle size of 0.16~1.25mm. The cost of this invention is relatively high, the content of cement and silica fume is relatively high, its cohesion is very strong, it cannot form a dispersed self-leveling state, and pores are easy to form on the surface. Quartz sand is relatively 4 to 5 times that of river sand, and its economic performance is very difficult. It has product promotion value.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a prefabricated fence with light weight, high strength, easy construction and beautiful appearance and a preparation method thereof.

Above-mentioned purpose of the present invention is achieved by following technical scheme:

A prefabricated fence, including a cup base, ground beams, wall panels, top pressure, wind-resistant columns and column caps, the wall panels are poured with fluid ultra-high-performance inorganic powder concrete, and the fluid ultra-high-performance inorganic The powder concrete comprises the following raw material components in parts by weight:

500-650 parts of low-alkali Portland cement or ordinary Portland cement with an average particle size of 30-60 μm;

85~120 parts of silica fume with an average particle size of 0.18 μm and a SiO ₂ content ≥ 85%;

115-145 parts of Class II fly ash with an average particle size of 20-40 μm;

175-215 parts of slag powder above S95 grade with an average particle size of 10-30 μm;

1050~1250 parts of river sand with a particle size of 0.16~4.75mm and a mud content of less than 0.5%;

26~32 parts of high-efficiency water reducing agent with water reducing rate greater than 30%;

130~145 parts of water;

100~140 parts of copper-coated steel fibers with a diameter of 0.18~0.25mm and a length of 10~15mm.

Preferably, the fluid ultra-high performance inorganic powder concrete includes the following raw material components in parts by weight:

575 parts of low-alkali Portland cement or ordinary Portland cement with an average particle size of 30-60 μm;

105 parts of silica fume with an average particle size of 0.18 μm and a SiO ₂ content ≥ 85%;

130 parts of Class II fly ash with an average particle size of 20-40 μm;

195 parts of S95 grade or above slag powder with an average particle size of 10-30 μm;

1150 parts of river sand with a particle size of 0.16~4.75mm and a mud content of less than 0.5%;

29 parts of high-efficiency water reducing agent with water reducing rate greater than 30%;

136 parts of water;

120 parts of copper-coated steel fibers with a diameter of 0.18~0.25mm and a length of 10~15mm.

By using slag and fly ash to replace cement, the proportion is reduced and the cohesion is low, so that it has good self-leveling performance, large expansion, low gas content, high economical cost performance, and meets the needs of vibration-free molding.

Further, the cup mouth foundation is embedded with a wind-resistant column, the column cap is fixed on the wind-resistant column, and the wall panels are connected between the adjacent wind-resistant columns, and the top of the wall panels is fixed with a pressure top, so Ground beams are fixed at the bottom of the surrounding wall panels.

The wall panel is provided with a connection structure connected with another wall panel, and the connection structure is that a concave part and a convex part are respectively provided on both sides of the wall panel, and the concave part is engaged with the convex part of the adjacent wall panel, and the convex part Engages with the recess of the adjacent wall panel. It is assembled by multiple wall panels, making the construction more convenient, and the thickness of the wall panels is about 1/4 of the traditional thickness. The wall panels are provided with multiple first hoisting holes for easy installation. The wall panel should be hoisted in the same direction as the panel installation direction, and should not be hung horizontally. Further, the thickness of the wall panel is 30-60mm, and the span of the wall panel is 2.5-4.5m.

The top is provided with a first interface corresponding to the convex portion or the concave portion of the wall panel. The top is provided with a plurality of second hoisting holes for easy hoisting, and a plurality of first bolt holes are provided for fixing the wind-resistant column. The wind-resistant column is correspondingly provided with a plurality of second bolt holes to fix the roof.

Further, the wind-resistant column includes a central column and a corner column, the opposite sides of the central column are provided with wallboard slots, and the adjacent sides of the corner column are provided with wallboard slots. The corner columns are used to connect and fix multiple wall panels when the wall panels are arranged at 90°, and the center columns are used to connect and fix multiple wall panels when the wall panels are arranged in a straight line.

The wind-resistant column is provided with top pressure grooves, and both the column cap and the top pressure are provided with a plurality of drip grooves. The top pressure groove is used for occlusal fixing of the wind-resistant column and the top pressure. The column cap is provided with a plurality of third bolt holes for fixing the column cap on the wind-resistant column, and a plurality of fourth bolt holes are correspondingly provided on the wind-resistant column for fixing the column cap. The wind-resistant column is also provided with a plurality of third hoisting holes to facilitate hoisting.

The wind-resistant columns and ground beams are made of C30 concrete; the cup foundation is made of C25 concrete; other parts are made of fluid ultra-high performance inorganic powder concrete. Due to the overall consideration of coordination and aesthetics, the cross-section of the wind-resistant column is too small, and the overall appearance of the fence is very poor. Therefore, the wind-resistant column of the fence is made of ordinary concrete. In addition, the cup foundation needs anti-overturning effect and its own weight is relatively heavy. Large and therefore made of low grade ordinary concrete.

Further, the ground beam is provided with a second interface corresponding to the recess or protrusion of the wall panel. The ground beam is provided with a plurality of fourth hoisting holes for easy hoisting, a plurality of drain holes for the convenience of water discharge, and a plurality of fifth bolt holes for fixing the ground beam on the upper edge of the cup base cup wall.

The cup mouth foundation is embedded with wind-resistant columns, and the cup wall of the cup mouth foundation is provided with a sixth bolt hole corresponding to the ground beam to fix the ground beam, and a plurality of fifth hoisting holes are provided for easy hoisting. C30 fine stone concrete is filled between the cup foundation and the wind-resistant column.

Furthermore, the ground beams, wall panels, top pressure and wind-resistant columns are provided with a steel mesh protective layer with a thickness of 10-15mm.

The present invention adopts assembling, which is realized by assembling a plurality of wall panels, assembling wind-resistant columns and wall panels, and assembling wall panels with top pressing and ground beams. The structure is simple and easy to construct, which can quickly speed up the construction progress and reduce the difficulty of construction site management.

The preparation method of described enclosure board, top pressing and column cap, comprises the steps:

S1. Add the copper-plated steel fiber and river sand limited by the formula into the mixer and stir for 2 to 3 minutes to disperse evenly;

S2. Then add low-alkali Portland cement or ordinary Portland cement, silica fume and slag powder with a limited formula to the mixer and continue stirring for 1 to 2 minutes until uniform;

S3. Add high-efficiency water reducer and water to the material obtained in S2 and continue stirring for 3 to 4 minutes until the dispersion is uniform, and a fluid ultra-high performance inorganic powder concrete is obtained;

The water is properly fine-tuned according to the actual slump of 26cm~30cm and the expansion of 60cm~70cm;

S4. The concrete prepared in S3 is evenly distributed in the wall panel mold with steel mesh skeleton through the distributing device, the steel mesh protective layer is 8~15mm, and it is smoothed by slight vibration, the pouring surface is calendered, and it enters natural curing for 12~14 hours, and then enter the infrared high temperature curing, the temperature is 90 + 5 ℃, constant temperature for 12 hours;

The steel mesh protective layer is composed of a plurality of steel bars criss-crossing.

Compared with the prior art, the present invention has the following beneficial effects:

(1) Fluid ultra-high-performance inorganic powder concrete is adopted, the thickness is 1/3~1/5 of traditional products, which greatly reduces the weight, improves the mechanical index performance and durability of the product, and its compressive strength can be Up to 110~150 MPa, flexural strength 14~20 MPa, with corrosion resistance, good life cycle and so on;

(2) The product is realized through the assembly process, which increases the flexibility of on-site construction, greatly reduces the labor intensity of construction, and reduces the complexity of management on the construction site; the principle is simple, the installation and operation are easy, and it can quickly and effectively solve the quality problems in the construction process. Control, construction progress affected by weather and other problems;

(3) Reduce on-site manual management and environmental pollution, rapidly increase construction progress, and reduce comprehensive construction;

(4) A steel mesh protective layer is provided to enhance the high-strength durability of the utility model;

Instructions attached

Fig. 1 is a front view of the structure of the present invention; wherein, 1, wall panels; 2, wind-resistant columns; 3, top pressure; 4, column caps; 5, ground beams; 6, cup foundation; 23, drainage holes;

Fig. 2 is the front view of the structure of the wall panel; wherein, 8, the convex part; 9 the concave part; 10, the first hoisting hole;

Fig. 3 is a side view of the structure of the wall panel; wherein, 8, a convex portion; 9 concave portions;

Fig. 4 is a structural schematic diagram of top pressing; wherein, 12, the second hoisting hole; 13, the first bolt hole; 14, the dripping tank;

Fig. 5 is a sectional view of 1-1 in Fig. 4; wherein, 11, the first interface; 12 the second hoisting hole; 14 the dripping tank;

Fig. 6 is a side view of the structure of the wind-resistant column; among them, 16, the wall panel slot; 17, the top pressure groove; 19, the third hoisting hole;

Fig. 7 is a top view of the center column; wherein, 15, the second bolt hole; 16, the wallboard slot; 18, the fourth bolt hole;

Fig. 8 is a top view of the corner post; wherein, 15, the second bolt hole; 16, the wallboard slot; 18, the fourth bolt hole;

Fig. 9 is a top view of the structure of the column cap; wherein, 14, the drip groove; 20, the third bolt hole;

Fig. 10 is a cross-sectional view of 2-2 in Fig. 9; wherein, 14, the drip tank; 20, the third bolt hole;

Fig. 11 is a top view of the structure of the ground beam; wherein, 21, the second interface; 24, the fifth bolt hole;

Fig. 12 is a structural front view of the ground beam; wherein, 21, the second interface; 22, the fourth hoisting hole; 23, the drainage hole;

Fig. 13 is a sectional view of 3-3 in Fig. 11; wherein, 22, the fourth hoisting hole; 23, the drainage hole; 24, the fifth bolt hole;

Figure 14 is a front view of the structure of the cup mouth foundation; wherein, 25, the sixth bolt hole; 26, the fifth hoisting hole;

Figure 15 is a top view of the structure of the cup base.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the embodiments do not limit the present invention in any form.

Example 1

As shown in Figure 1, a prefabricated wall includes a wall panel 1, a wind-resistant column 2, a top pressure 3, a column cap 4, a ground beam 5, and a cup foundation 6, and the cup foundation 6 is embedded with a wind-resistant The column 2, the column cap 4 is fixed on the wind-resistant column 2, the wall panels 1 are connected between the adjacent wind-resistant columns 2, the top of the wall panels 1 is fixed with a pressure top 3, and the bottom of the wall panels 1 is fixed There are ground beams 5.

The wall panel is poured with fluid ultra-high performance inorganic powder concrete, and the fluid ultra-high performance inorganic powder concrete includes the following raw material components in parts by weight:

575 parts of low-alkali Portland cement with an average particle size of 30-60 μm;

105 parts of silica fume with an average particle size of 0.18 μm and a SiO ₂ content ≥ 85%;

130 parts of Class II fly ash with an average particle size of 20-40 μm;

195 parts of S95 grade or above slag powder with an average particle size of 10-30 μm;

1150 parts of river sand with a particle size of 0.16~4.75mm and a mud content of less than 0.5%;

29 parts of high-efficiency water reducing agent with water reducing rate greater than 30%;

136 parts of water;

120 parts of copper-coated steel fibers with a diameter of 0.18~0.25mm and a length of 10~15mm.

As shown in Figures 2 and 3, the wall panel is provided with a connection structure connected to another wall panel, and the connection structure is that a concave portion 9 and a convex portion 8 are respectively provided on both sides of the wall panel, and the concave portion 9 is connected to the adjacent wall panel. The protrusions 8 of the wall panels engage, said protrusions 8 engaging the recesses 9 of the adjacent wall panels. The wall panel is provided with a plurality of first hoisting holes 10 for easy installation. The wall panel should be hoisted in the same direction as the panel installation direction, and should not be hung horizontally.

As shown in Figures 4, 5, and 7, the top is provided with a first interface 11 corresponding to the convex portion of the wall panel. The top is provided with a plurality of second hoisting holes 12 for easy hoisting, and a plurality of first bolt holes 13 are provided for fixing the wind-resistant column. The wind-resistant column is correspondingly provided with a plurality of second bolt holes 15 to fix the top. The top is also provided with a plurality of drip grooves 14 .

As shown in Figures 6, 7 and 8, the wind-resistant columns include central columns and corner columns. Adjacent sides of the corner post are provided with wall panel slots 16, which are used to connect and fix multiple wall panels when the wall panels are arranged at 90°. The opposite sides of the central column are provided with wallboard clamping grooves 16, which are used to connect and fix multiple wallboards when the wallboards are arranged in a straight line.

As shown in Figures 6, 9, and 10, the wind-resistant column is provided with a top pressure groove 17, and the column cap is provided with a plurality of drip grooves 14. The crimping groove 17 is used for occlusal fixing of the wind-resistant column and the crest. The column cap is provided with a plurality of third bolt holes 20 for fixing the column cap on the wind-resistant column, and a plurality of fourth bolt holes 18 are correspondingly provided on the wind-resistant column for fixing the column cap. The wind-resistant column is also provided with a plurality of third hoisting holes 19 to facilitate hoisting.

As shown in Figures 11, 12, and 13, the ground beam is provided with a second interface 21 corresponding to the concave portion of the wall panel. The ground beam is provided with a plurality of fourth hoisting holes 22 for easy hoisting, a plurality of drainage holes 23 are provided to facilitate the discharge of water, and a plurality of fifth bolt holes 24 are provided to fix the ground beam on the cup wall of the cup foundation along.

As shown in Figures 14 and 15, the cup mouth foundation is embedded with wind-resistant columns, and the cup wall of the cup mouth foundation is provided with a sixth bolt hole 25 corresponding to the ground beam to fix the ground beam. The fifth hoisting hole 26 is convenient for hoisting.

C30 fine stone concrete is filled between the cup foundation and the wind-resistant column.

Furthermore, the ground beams, wall boards, top pressure and wind-resistant columns are provided with a steel mesh protective layer with a thickness of 13mm. The thickness of the wall boards is 45mm, and the span of the wall boards is 3.5m.

The preparation method of described enclosure board, top pressing and column cap, comprises the steps:

S1. Add the copper-plated steel fiber and river sand limited by the formula into the mixer and stir for 3 minutes to disperse evenly;

S2. Add low-alkali Portland cement or ordinary Portland cement, silica fume and slag powder with limited formula to the mixer and continue stirring for 2 minutes until uniform;

S3. Add high-efficiency water reducer and water to the material obtained in S2 and continue to stir for 4 minutes until the dispersion is uniform, and a fluid ultra-high performance inorganic powder concrete is obtained;

The water is properly fine-tuned according to the actual slump of 28cm and expansion of 65cm;

S4. The concrete prepared in S3 is evenly distributed in the wall panel mold with steel mesh skeleton through the distribution device, the steel mesh protective layer is 13mm, and it is smoothed by slight vibration, and the bottom surface is calendered. It enters natural curing for 13 hours, and then enters infrared rays. High temperature curing, the temperature is 90 ℃, constant temperature for 12 hours;

The steel mesh protective layer is composed of a plurality of steel bars criss-crossing.

Example 2

Except that the parts by weight of each raw material component of the fluidized ultra-high performance inorganic powder concrete are different, other conditions are the same as in Example 1;

The fluid ultra-high-performance inorganic powder concrete includes the following raw material components in parts by weight:

500 parts of low-alkali Portland cement or ordinary Portland cement with an average particle size of 30-60 μm;

85 parts of silica fume with an average particle size of 0.18 μm and a SiO ₂ content ≥ 85%;

115 parts of Class II fly ash with an average particle size of 20-40 μm;

175 parts of S95 grade or above slag powder with an average particle size of 10-30 μm;

1050 parts of river sand with a particle size of 0.16~4.75mm and a mud content of less than 0.5%;

26 parts of high-efficiency water reducing agent with water reducing rate greater than 30%;

130 parts of water;

100 parts of copper-coated steel fibers with a diameter of 0.18~0.25mm and a length of 10~15mm.

Example 3

Except that the parts by weight of each raw material component of the fluidized ultra-high performance inorganic powder concrete are different, other conditions are the same as in Example 1;

The fluid ultra-high-performance inorganic powder concrete includes the following raw material components in parts by weight:

650 parts of low-alkali Portland cement or ordinary Portland cement with an average particle size of 30-60 μm;

120 parts of silica fume with an average particle size of 0.18 μm and a SiO ₂ content ≥ 85%;

145 parts of Class II fly ash with an average particle size of 20-40 μm;

215 parts of slag powder above grade S95 with an average particle size of 10-30 μm;

1250 parts of river sand with a particle size of 0.16~4.75mm and a mud content of less than 0.5%;

32 parts of high-efficiency water reducing agent with water reducing rate greater than 30%;

145 parts of water;

140 parts of copper-coated steel fibers with a diameter of 0.18~0.25mm and a length of 10~15mm.

Comparative example 1

Except that described concrete is common concrete, other conditions are with embodiment 1;

Described ordinary concrete comprises each raw material component of following weight parts composition:

Ordinary Portland 42.5 cement 450 parts;

River sand, particle size distribution is 700 parts of medium sand;

1150 parts of 5~15mm stones;

170 parts of water;

6 parts of high-efficiency water reducing agent with water reducing rate greater than 20%;

Comparative example 2

Except that silica fume is omitted in the described ultra-high performance concrete raw material component, other conditions are the same as embodiment 1;

Comparative example 3

Except that fly ash is omitted in the described ultra-high performance concrete raw material component, other conditions are the same as embodiment 1;

Comparative example 4

Except that slag powder is omitted in the described ultra-high performance concrete raw material component, other conditions are the same as embodiment 1;

Comparative example 5

Except that the weight parts of silica fume, fly ash and slag powder are different in the ultra-high performance concrete, other conditions are the same as embodiment 1;

The parts by weight of silica fume, fly ash and slag powder in the ultra-high performance concrete are as follows:

Silica fume 84 parts

114 parts of fly ash

174 parts of slag powder;

Comparative example 6

Except that the weight parts of silica fume, fly ash and slag powder are different in the ultra-high performance concrete, other conditions are the same as embodiment 1;

The parts by weight of silica fume, fly ash and slag powder in the ultra-high performance concrete are as follows:

Silica fume 121 parts

146 parts of fly ash

216 parts of slag powder;

According to embodiment 1 ~ 3 and comparative example 1 ~ 6 the prefabricated fence of gained preparation, its performance is as follows: fence wall Thickness (cm) Weight (kg) (4m*2.5m) Wind load rating (kN/m2) Example 1 4 960 0.8 Example 2 3 720 0.3 Example 3 5 1200 1.0 Comparative example 1 150 3600 0.5 Comparative example 2 4 960 0.6 Comparative example 3 4 950 0.8 (severe stomata) Comparative example 4 4 960 0.6 Comparative example 5 4 980 0.6 Comparative example 6 4 950 0.8 (severe stomata)

By contrasting Example 1 with Examples 1 to 3, it can be seen intuitively that the thickness and self-weight of the present invention are significantly smaller than the prefabricated walls using ordinary concrete, and are also superior to ordinary concrete materials in terms of bearing wind loads; through Comparative Examples 2 to 4 Compared with Example 1, it is obvious that Example 1 is better in terms of bearing wind loads. Although Comparative Example 3 is comparable to Example 1 in terms of bearing wind loads, the surface pores prepared in Comparative Example 3 are serious. From the data point of view, silica fume , the combination and proportioning of fly ash and slag powder can make the performance of the present invention optimal; by comparative example 5,6 and embodiment 1～3 contrast, the bearing wind load grade of comparative example 5 is lower than embodiment 1,3 , is higher than that of Example 2, but its self-weight is obviously larger than that of Example 2. On the whole, the effect of Comparative Example 5 is not as good as that of Example 2. Although Comparative Example 6 is higher than that of Example 2, the product It shows that the stomata are serious, and it can be seen that the numerical range of the formula of the present invention is optimal.

Claims (8)

1. A prefabricated fence, comprising a cup base, ground beams, wall panels, top pressure, wind-resistant columns and column caps, characterized in that the wall panels, top pressure and column caps are made of fluid ultra-high performance inorganic powder concrete For pouring, the fluid state ultra-high performance inorganic powder concrete includes the following raw material components in parts by weight: 500-650 parts of low-alkali Portland cement or ordinary Portland cement with an average particle size of 30-60 μm; 85~120 parts of silica fume with an average particle size of 0.18 μm and a SiO ₂ content ≥ 85%; 115-145 parts of Class II fly ash with an average particle size of 20-40 μm; 175-215 parts of slag powder above S95 grade with an average particle size of 10-30 μm; 1050~1250 parts of river sand with a particle size of 0.16~4.75mm and a mud content of less than 0.5%; 26~32 parts of high-efficiency water reducing agent with water reducing rate greater than 30%; 130~145 parts of water; 100~140 copies of copper-coated steel fibers with a diameter of 0.18~0.25mm and a length of 10~15mm; The cup base is embedded with a wind-resistant column, and the column cap is fixed on the wind-resistant column. Wall panels are connected between the adjacent wind-resistant columns, and the top of the wall panels is fixed with a top. The ground beam is fixed at the bottom; the wind-resistant column includes a central column and a corner column, the opposite sides of the central column are provided with wallboard slots, and the adjacent sides of the corner column are provided with wallboard slots. 2. A prefabricated enclosure according to claim 1, characterized in that, said fluid ultra-high performance inorganic powder concrete comprises the following raw material components in parts by weight: 575 parts of low-alkali Portland cement or ordinary Portland cement with an average particle size of 30-60 μm; 105 parts of silica fume with an average particle size of 0.18 μm and a SiO ₂ content ≥ 85%; 130 parts of Class II fly ash with an average particle size of 20-40 μm; 195 parts of S95 grade or above slag powder with an average particle size of 10-30 μm; 1150 parts of river sand with a particle size of 0.16~4.75mm and a mud content of less than 0.5%; 29 parts of high-efficiency water reducing agent with water reducing rate greater than 30%; 136 parts of water; 120 parts of copper-coated steel fibers with a diameter of 0.18~0.25mm and a length of 10~15mm. 3. A prefabricated enclosure according to claim 1, characterized in that, the enclosure panel is provided with a connection structure connected to another enclosure panel, and the connection structure is that both sides of the enclosure panel are respectively provided with a concave portion and a convex portion , the concave portion is engaged with the convex portion of the adjacent wall panel, and the convex portion is engaged with the concave portion of the adjacent wall panel. 4. A prefabricated enclosure according to claim 3, wherein the thickness of the enclosure is 30-60mm, and the span of the enclosure is 2.5-4.5m. 5. A prefabricated fence according to claim 1, characterized in that, the top is provided with a first interface corresponding to the convex portion or concave portion of the wall panel, and the ground beam is provided with a concave portion or convex portion corresponding to the wall panel corresponding to the second interface. 6. A prefabricated fence according to claim 1, characterized in that, the ground beams, wall panels, top pressure and wind-resistant columns are provided with a steel mesh protective layer with a thickness of 10-15mm. 7. A prefabricated enclosure according to claim 1, characterized in that the wind-resistant column is provided with a top pressure groove, and both the column cap and the top pressure are provided with a plurality of drip grooves. 8. according to the preparation method of the described prefabricated wall of any one of claim 1～7, it is characterized in that, the preparation of described wall panel, top pressing and column cap comprises the following steps: S1. Add the copper-plated steel fiber and river sand limited by the formula into the mixer and stir for 2 to 3 minutes to disperse evenly; S2. Then add low-alkali Portland cement or ordinary Portland cement, silica fume and slag powder with a limited formula to the mixer and continue stirring for 1 to 2 minutes until uniform; S3. Add high-efficiency water reducer and water to the material obtained in S2 and continue to stir for 3 to 4 minutes to disperse evenly to obtain fluid ultra-high performance inorganic powder concrete; The water is properly fine-tuned according to the actual slump of 26cm~30cm and the expansion of 60cm~70cm; S4. The concrete prepared in S3 is evenly distributed in the wall panel mold with steel mesh skeleton through the distribution device, the steel mesh protective layer is 10~15mm, and it is smoothed by slight vibration, the bottom surface is calendered, and it enters natural curing for 12~14 hours , and then enter the infrared high temperature curing, the temperature is 90 + 5 ℃, constant temperature for 12 hours; The steel mesh protective layer is composed of a plurality of steel bars criss-crossing.