As the country vigorously advocates green buildings and prefabricated buildings, new goals are set for 2022. The Ministry of Housing and Urban-Rural Development and the National Development and Reform Commission recently released the "Implementation Plan for Carbon Peaking in Urban and Rural Construction Sector", proposing that by 2030, the proportion of prefabricated buildings in newly built urban buildings in that year will reach 40%. Ji Zhu Technology’s container-type modular prefabricated houses have also been recognized by the industry in this development trend.
1: What is green container house construction?
Container house building is a new type of building in recent years. It is a steel structure, prefabricated building, modular building and green building. It has diverse functions, can adapt to a variety of functional needs, and has a wide range of uses. It can be built into container mobile hotels and residences, commercial blocks, exhibition receptions, creative science and technology parks, etc. The editor will introduce the advantages of container construction through recent project cases done by the company.
2: What are the advantages of green container house construction?
①Low carbon environmental protection and green economy
Since the process of building container buildings can be integrated into the factory and prefabricated, the construction waste generated can be processed in a controlled manner and the on-site environmental pollution is relatively small. According to estimates, in terms of green and low carbon, compared with traditional construction methods, it can reduce on-site construction waste by more than 75% and reduce noise pollution by more than 90%. It can achieve standardized production and rapid integrated assembly while ensuring the high quality and quality of engineering projects. Green and low-carbon development of engineering construction. Moreover, by making good use of the portability of container houses, container houses can be utilized or recycled at multiple locations to the greatest extent, and then transported to another site for assembly and use multiple times after use, thus minimizing investment costs.
Container house construction does not have high requirements for land foundation. Conventional civil construction and steel structures require long-term planning. Therefore, the foundation requirements need to meet sufficient redundancy to ensure safety. Especially when used as a public building function. However, container construction does not need to be so cumbersome. It only needs to design a few load-bearing acceptance points, which greatly reduces investment costs. You can consider spot pile foundations, including cement cast-in-place foundations, ground screw foundations, or you can install them directly on squares, roadsides, parking spaces, lakeside, etc.
② Shorten the construction period and simplify the approval process
As a type of modular building, container house modules can achieve overall planning and factory pre-manufacturing. According to incomplete statistics, compared with traditional civil construction, it saves about 60% of the construction period, saving time and cost. It is particularly suitable for real estate to be used as temporary container sales offices, reception centers, and model houses. It is also suitable for rapid construction of scenic spots, commercial street openings, hotel landings, etc.;
Due to its relatively low foundation requirements and its disassembly and transportability, the approval process is minimal. Generally speaking, you can apply for approval in the form of temporary buildings, which will not occupy the building quota and increase the land utilization rate. In recent years, a large number of container house construction forms have appeared in China. This form is recognized and accepted by various places, which also greatly reduces the pressure for approval. Of course, specific policies should be approved and submitted for construction in accordance with local regulations.
③Good decoration and various styles
In people's conventional impression, containers are used for construction site housing or logistics transportation, but the container houses designed and manufactured by Ji Zhu Technology have already achieved diverse appearance styles. A good plan has a high tonality and obvious drainage effect. The main exterior decoration material can be the original corrugated shipping container board, which is strong, durable and corrosion-resistant. Wood veneer can also be used to decorate the appearance. Aluminum panels can also be customized to create different high-end effects. The space capsule, Apple capsule, and NIO battery swap station owned by Ji Zhu Technology Company have used aluminum plate effects many times, making them more high-end and luxurious.
3. Some misunderstandings about container house construction and their solutions?
①Primary misunderstanding: "cold" in winter and "hot" in summer are serious problems
Since most of the outer skins of container houses are made of metal materials, which have low specific heat capacity and high heat transfer efficiency, many people think that container houses are not treated like this, making them cold in winter and hot in summer. However, such an obvious problem definitely needs to be considered and dealt with comprehensively. It can be solved mainly in the following ways:
First, by adding layers of insulation. Generally, 5~10cm of rock wool or 3~5cm of polyurethane foam insulation layer is added. In severe cold areas, the two can be combined, or the thickness of each layer can be increased;
Second, by choosing doors and windows with different heat conductivity coefficients, double-layer insulated tempered glass is now routinely used, and three layers can also be used, as well as broken bridge aluminum alloy;
Third, add external thermal insulation to the top, such as adding an off-top roof, fake turf, green plant layer, platform, etc.;
Fourth, choose paints, window stickers, etc. that have the function of isolating heat transfer.
Fifth, of course, no matter how much thermal insulation measures are added, air conditioning is still essential. In addition, you can add air curtains into the home, etc.
Container house insulation and exterior decorative panels
②Most people think that container houses are prefabricated houses on construction sites
Most people think that container houses are prefabricated houses on construction sites, but the actual difference is very big. They are both modular buildings, but there are still differences between container modular buildings and construction floor buildings. The main focus is on improving and optimizing the service life, assembly form, and aesthetics from the selection of materials. The service life of a container building is generally 20 to 30 years with proper use and normal maintenance. If you choose better materials, the service life will be longer. However, for the board houses on the construction site, each component material is prioritized with the lowest cost as the starting point, so the thickness of the board and the materials used are different in terms of environmental protection and other aspects.
③Container house construction is afraid of lightning strikes
A container house is a closed metal space that encounters a thunderstorm. According to McFaraday's theory: a metal box-shaped building is the safest place. When the charge is directed to a closed metal container, it will flow evenly around the perimeter without passing through the container. It is similar to that on airplanes. Of course, lightning protection equipment such as lightning rods, lightning protection belts or lightning protection nets can also be added according to the civil construction method.