2020年10月27日 星期二

The Knowledge of Steel Structure Engineering Construction

 Steel structure engineering is a structure made mainly of steel, which is one of the main types of building structures. Steel structure is one of the more common structural forms in modern building engineering.

At present, the application of steel structure has greatly developed, both in quantity and quality far exceed the past.

It has reached a high level in terms of design, manufacturing and installation technology, mastered the design and construction technology of various complex buildings, and has built many large-scale and complex-structure steel structure workshops and large-span steel structures for civilian use Construction and railway bridges.

Road bridges and so on.

The floor of the prefabricated house is composed of cold-formed thin-walled steel frames or composite beams, OSB structural panels on the floor, supports, and connectors. The materials used are oriented particle board, cement fiberboard, and plywood. These lightweight floors can withstand loads of 316 to 365 kg per square meter. The weight of the floor structure system of maite prefabricated houses is only one-fourth to one-sixth that of the traditional domestic concrete floor system.

1. 3E prefab house roof system

The residential roof system is composed of roof trusses, structural OSB panels, waterproof layers, and light roof tiles (metal or asphalt tiles). The roofs of prefabricated houses in Meite can be combined in many ways. There are also many materials. Under the premise of ensuring the waterproof technology, there are many options for the appearance.

2. Wall structure of custom steel construction warehouse

The wall of the prefabricated house is mainly composed of wall frame columns, wall top beams, wall bottom beams, wall supports, wall panels and connectors. Maite building prefabricated houses generally use internal cross walls as load-bearing walls of the structure, and the wall columns are shaped light steel members. The wall thickness is determined by the load. It is usually 0.84 ~ 2 mm, and the distance between the wall columns is 400 ~ 600 mm, Maite Building Prefabricated House This kind of wall structure layout can withstand and transfer vertical loads, and it is convenient to arrange, but Maite Building Prefabricated House's wall structure cannot bear horizontal loads.

3. Low-cost prefabricated house building insulation energy saving technology

In order to ensure the insulation effect of prefabricated houses, the thermal insulation materials used in the exterior walls and roofs of buildings can be used for a long time and can be thermally insulated. In addition to filling fiberglass between the pillars of the wall, the prefabricated house of Maite Building is generally affixed with a layer of insulation material on the outside of the wall. , Reduce the heat transfer through the floor, all interior wall walls are filled with glass fiber between the columns, reducing the heat transfer between the walls of the house.

3E Prefab House

3E Prefab House

4. Building fire protection technology

One of the key problems of prefabricated houses is the application of fire protection technology. The fire resistance rating of Maite's prefabricated houses is Grade 4. The matte building prefabricated house is affixed with fire-resistant gypsum board on both sides of the wall and the ceiling of the floor. For ordinary firewalls and individual walls, it is protected by 25.4 mm thick 1-inch gypsum board to meet the fire protection requirements for one hour. The fiberglass filled between the wall pillars and the floor joists also plays an active role in protecting fire and heat.

5. Building sound insulation technology

The prefabricated house is filled with glass wool between the inner and outer walls and the floor joist to prevent the audio part transmitted through the air. For the impact sound transmitted through the solid, the following structural treatments are used: Two walls in the middle gap; and for the small keel of the fixed gypsum board for the ceiling, the elastic structure with small cutouts is used to effectively reduce the solid sound transmission between floors.


2020年10月21日 星期三

What Are the Advantages of Pu Sandwich Panels in Cold Storage Projects?

 PU sandwich panel has the advantages of moisture resistance, water resistance, fire resistance, flame resistance, high temperature resistance, etc., and is widely used in refrigerators, refrigerated trucks and other refrigeration equipment. Polyurethane composite panels are generally used for roofing outer panels of buildings. The panels have good thermal insulation, heat insulation and sound insulation effects, and polyurethane does not support combustion, which is in line with fire safety. The upper and lower boards are combined with polyurethane to have high strength and rigidity. The lower board is smooth and flat, with clear lines, which increases the indoor beauty and flatness. Easy to install, short construction period, beautiful, it is a new type of building material. Polyurethane board manufacturers have a large class of polymers with more urethane groups in the molecular main chain. They are a kind of polymer material between plastic and rubber. It has a large elongation and a hardness range. Wide, wide range of formula adjustment, excellent abrasion resistance and mechanical properties.

Sandwich panel is made of PIR surface material. The outer part of the polyurethane insulation board is made of SII, PVC color steel plate and stainless steel, which prevents the diffusion and loss of temperature. To a large extent, the working efficiency of the cold storage is guaranteed.

The characteristics of polyurethane also greatly increase the area of the house, because the thickness of the board is thinner than normal insulation boards.

Pu Sandwich Panel

Pu Sandwich Panel

The quality of the polyurethane board determines the service life and cooling effect of the cold storage. Polyurethane sheet manufacturers cast polyurethane elastomer (CPUR) is the most important of the three major types of polyurethane elastomer processing, the amount of which accounts for 6o% of the PUR amount, it has a diverse chemical structure, easy adjustment of viscosity, excellent processing technology , Easy to put into industrial production, easy to use and fast curing, etc., so it is very suitable for making large and complex components. Polyurethane wear-resistant lining board is produced and processed by casting polyurethane elastomer technology. The utility model can be used for up to 30 years and has a good waterproof and thermal insulation effect.

Polyurethane boards have different molecular structures due to their different densities. High-density polyurethane insulation board has strong deformation resistance, is not easy to crack, and is stable and safe in painting. Polyurethane material has stable pore structure and basically closed pore structure. It not only has excellent thermal insulation performance, but also has resistance to freeze-thaw and sound absorption. Under normal use and maintenance conditions, the average life of rigid foam polyurethane insulation structure can reach more than 30 years. However, because the unit price of insect, fungus or algae foaming materials is higher than other traditional insulation materials, it may suffer dry, wet or electrochemical corrosion under normal conditions of structural life, but the increased cost will be due to heating and cooling The substantial reduction was offset.

Sandwich panel supplier believes that polyurethane panels play a very important role in cold storage projects. If you have any hydrangea on our products, please feel free to contact us.


2020年10月15日 星期四

Alc Plate Purchase Tips

 ALC is an abbreviation for Autoclaved lightweight concrete. ALC boards are made of silica sand, cement, lime and other raw materials, and are formed by multi-porous concrete formed by heating and maintenance with pressurized steam. Improved construction steel reinforcement); can be widely used in concrete and steel structure housing, company offices, industrial plants' interior / exterior walls / floors / roofs, fire prevention boards, vent walls, steel structure beams and columns, fire maintenance, sound insulation Renovation of walls, old houses and buildings.

1. ALC panel can also be immediately applied to the exterior wall surface of various architectural structures. In view of the many well-proportioned small air holes in the solid wood panel, the alc self-insulation exterior wall panel has extraordinary insulation and insulation. It has the dual characteristics of temperature, and when applied to the external wall, the alc self-insulation and external wall board is much thinner than ordinary aerated concrete, which can meet the national environmental protection and energy-saving thermal insulation regulations.

2. There are many symmetrical small air holes inside the ALC panel, so it also has the dual characteristics of sound absorption and sound insulation; the high precision of the plate can also create a high-density indoor space with a quiet and comfortable living environment.

3. As the key raw material of Xinguangzheng's alc self-insulation exterior wall board is silicon sand, which is steam-cured at high temperature and has no radioactive materials, it belongs to green environmental protection decorative materials.

4. ALC panel prefabricated villa is an inorganic silicate material that does not age and has good performance. Its application period is consistent with the use period of various building constructions.

5. ALC board production is modernized and standardized, and the installation is scaled up. It can be used for cutting, planing, drilling, and quicker construction work. On-site construction of prefabricated buildings greatly shortens the construction cycle time and labor of the construction Expenses related to construction equipment. Compared with the construction period, the construction period and the aeration block can be reduced by one-third to one-half;

For ALC board, its material is three high-quality materials with high quality, high quality and high effect. Then, the material of this kind of board is prepared through multiple high temperature and high pressure treatment, and this kind of board is used repeatedly, which has a long life and is convenient for maintenance. It can be said that it is a high-quality sheet, which is very strong and wear-resistant, and is a must for construction.

The average household consumer who purchases ALC board is installed on the shower roof, and this has high requirements for the performance of the board. Not only can it resist pressure, it can also have a good effect in terms of insulation. Of course, if it is used in a large factory, it needs to be able to absorb more noise or be able to effectively eliminate noise, so as to be of high quality.

ALC board performance characteristics:

Sound insulation: This material is a porous material composed of a large number of uniform, disconnected tiny pores, and has good sound insulation performance. The average sound insulation of 100-thick ALC board is 40.8dB, and the average sound insulation of 150-thick ALC board. 45.8 dB.

Fire resistance: ALC board is a non-combustible inorganic material with good fire resistance. As a wallboard, the fire resistance of 100 thick plates is 3.23 hours; the thickness of 150 thick plates is> 4 hours; the fire resistance of 50 thick plate protection steel beams is> 3 hours ; 50 thick plate protection steel column fire resistance> 4 hours; both exceeded the first-class fire resistance standard.

Durability: ALC is an inorganic silicate material that does not age and has good durability. Its service life can match the service life of various buildings.

Alc Panel

Alc Panel

2020年10月9日 星期五

What about the Performance of Prefabricated Houses?

 1. Thermal insulation and sound insulation

Advanced external insulation methods meet the latest energy-saving standards for buildings in China, eliminate the phenomenon of hot and cold bridges, and keep the building away from damage caused by wet deformation, decay, and erosion. The unique design of heat reflection and ventilation layer makes the building insulation more effective. The temperature in summer can be lower than 5-8 ℃.

2. Earthquake resistance and wind resistance

Decorative steel structure is flexibly connected by bolts and screws to effectively absorb seismic energy. Walls and foundations are equipped with anti-drilling and anti-shear joints, and the house is light in weight. First, the earthquake resistance is above 9 degrees, so the seismic performance is superior to that of concrete houses. The roof trusses, floor slabs, walls, foundations, and various components are reliably and firmly connected through special accessories, which can withstand typhoons below level 14.

Decorative Steel Structure

Decorative Steel Structure

3. Roof loading and fire prevention

The snow load on the roof can be individually designed according to the climatic conditions, which can meet the snow load requirement of 1.5 meters and the maximum fire resistance 3-5H.

4. Noise reduction

It adopts perfect sound insulation and shock absorption technology to meet national building sound insulation standards, especially in the most sensitive 250-1000H2 audio of human ears, focusing on professional enhancement processing to create a quiet and comfortable living environment.

5, moisture-proof ventilation

Ventilation compartments are set up inside the walls and roofs, and the natural wind effect is formed by the difference in air density and temperature. The unidirectional ventilation layer is set up inside the compound fence structure, so that the walls and the roof have the function of "breathing".

6, durable

The custom H section steel structure is galvanized and special anti-corrosion treatment, so it can protect the steel from corrosion and prolong the service life of the steel.

7.Energy saving and environmental protection

Energy saving: Reduce energy consumption by 65% -90%

Water saving: dry construction operation, which is 10% of the water consumption of traditional construction

Material saving: 90% of building materials can be recycled

Land saving: increase the use area of the set by 10%

Environmental protection: recycling, pollution-free building system

Villa materials and architecture:

The main components of easy assembled villa have 4 major structures: light steel frame structure, wall structure, floor structure and roof structure

1. Lightweight steel frame structure: assembled in the field after processing in the factory, it has the characteristics of high strength, good seismic performance, simple and fast assembly and construction, etc. The surface of the steel component is rust-resistant treated with high-efficiency antiseptic to ensure the durability . Because the steel frame structure is wrapped in the thermal insulation wall, there will be no thermal bridges. The amount of steel used is small and the weight is 20-30 kg per square meter. The amount of steel used is only about 60% of that of ordinary steel frame buildings. Use at least 1/3 the amount of steel.

2. Wall structure: There are 4 types of exterior wall panels, interior wall panels, partition wall panels and thermal insulation blocks. According to the climatic temperature in different regions, different walls can be combined. The cold area is combined into a wall that is both thermally and thermally insulated to ensure that the indoor heat is not absorbed or leaked by the wall, and the energy saving effect reaches 80%, which means that only 1/5 of the energy consumption of ordinary buildings can reach the indoor For temperature requirements, in the hot area, external wall panels with hollow convection are used to form a composite wall. The solar radiation heat is taken away by the air flowing in the wall, which can keep the room comfortable and cool.

3. Floor structure: light weight, high strength, unique closed microporous structure and air sound insulation layer, making the sound insulation effect reach 50 decibels, and easy to install, the bearing capacity is more than 500 kg per square meter, far more than the average floor per square meter National standard for carrying capacity of 150 kg!

4. Roof structure: It is also designed on the principle of wall panels, with high standards of heat insulation, heat insulation, sound insulation, waterproof, and moisture resistance. It can also be shaped freely according to the design of the house.


2020年10月3日 星期六

Ten Advantages of Light Steel Structure Villas

 1.Replace traditional building materials

To realize the industrialization of the residential industry and improve the human living environment, ultra-light steel housing can not only replace the traditional residential model, but also completely use industrialized production and building materials. Using steel to replace wood and brick, and using steel to replace concrete, the environment-friendly and energy-saving house is the best product to improve the human living environment in the 21st century.

Custom Prefab Villa China

Custom Prefab Villa China

2. Ideal thermal insulation performance

Custom light steel prefabricated villa adopts a fully enclosed thermal insulation and moisture-proof system, with small temperature changes and low heat loss. It has a chaotic living environment regardless of winter and summer. The outdoor temperature is 0 ° C, and the indoor temperature can still be above 17 ° C. When the outdoor temperature reaches 30 ° C, the indoor temperature is only about 21 ° C.

3. Significant energy saving effect

The ultra-light steel structure housing has low heat conduction, good thermal insulation performance and outstanding energy saving effect. Compared with brick-concrete structure houses, it can save more than 70% of energy, and air-conditioning equipment can save more than 30% of power consumption in winter and summer.

4.Excellent sound insulation performance

The actual measurement results show that when the outdoor is 80 dB, the indoor is only 40 dB (80 dB is noise, and 40 dB is quiet office environment).

5.Durability

The main structure uses 1.2 mm thick steel plate for car shell. Both sides are plated with zinc and aluminum, with good anti-corrosion performance, high strength, and excellent durability. The experimental results confirm that the durability of the main body of the ultra-light steel structure can reach more than 100 years.

6.Excellent seismic performance

Custom prefab villa china has good overall rigidity, high strength, light weight and strong deformation ability. the weight of the building is one-tenth that of the brick-concrete structure. Its seismic performance is more than four times that of the brick-concrete structure, and it can withstand hurricanes of 70 meters per second, so that life and property can be effectively protected.

7. Thin wall, large space, free to change. Ultra-light steel structure building adopts box structure bearing system, freely designed in plane and space, large space, no beams and columns, neat and generous interior, flat layout as you like, you can increase the number of rooms at will, change Room size and use function. The thickness of the outer wall is 17 cm, and the thickness of the inner wall is 120 cm (the northern wall is increased by 10-20 cm, including the thickness of the interior and exterior decoration), which can reduce the area occupied by the brick-concrete structure wall by more than 60%. The use area is reduced, and the user investment cost is reduced.

8. The construction speed is fast, the cycle is short, the efficiency is high, it is not affected by the season, and it is constructed around the clock.

9. All can realize factory production. The light steel structure housing can be completely installed in the construction site and installed at the construction site, which reduces the construction intensity on the site and improves the construction efficiency and engineering quality. During construction, the community environment can be built first, and then the house can be built. And can be designed and manufactured in accordance with the needs of buyers. Among them, the interior decoration can also be completed at one time through the overall design.

10. The structure's waste utilization rate is 100%, which is a real environmentally friendly building material. This kind of ultra-light steel structure house is not fair in terms of comprehensive cost.

Technology System

1. CAD and CAM software support and intelligent equipment production, excellent physical performance of various buildings, the system is suitable for buildings below 3 floors, the system uses the form of light steel structure plus wood enclosure, through a variety of metal connectors or tenon Means of connection and fixing, the structural stability is superior to that of pure wooden houses, the termite resistance is fully demonstrated, and the original ecological effects of the wooden houses are fully demonstrated, and the cost is reduced by 30% compared to pure wood. Especially suitable for tourist resorts, clubs and other buildings.

2. Light steel column system

The system is suitable for buildings with less than 6 floors. The light steel house is composed of light steel thin-walled pipes as beams and columns and light steel wall frames as retaining walls. The columns, columns and beams are bolted. Industrial production, the house as a whole is lightweight, seismic, thermal insulation, and suitable.

3. Heavy steel and steel concrete frame system

The decking steel structural system is suitable for buildings below 30 storeys: the heavy-duty steel beams and columns or cast-in-situ concrete are used as the load-bearing structure of the house. Industrialization, quick installation, continuousization and standardization.

Remarks:

Exterior wall structure from inside to outside: OSB board + fireproof cotton, soundproof cotton + light steel keel + OSB board + breathing paper + ecological board

Internal wall structure: OSB board + fireproof cotton + light steel keel + fireproof cotton, soundproof cotton + OSB board.

Roof structure: roof tile + OSB board + light steel keel + waterproof coil + resin tile.