Recently, a friend who is engaged in the promotion of prefabricated construction sent me a message. We talked about the development trend of the construction industry in the future. The formulation of standards is bound to have a great impact on the current domestic construction industry, and the most direct impact should be a major change in the mode of concrete supply in the construction industry. So, what is a prefabricated building?

Prefabricated building, in simple terms, means that the components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.) required for the building are produced in a specific place, and then transported to the construction site, where they are installed by assembly. building.

For example, the floor was previously constructed by pouring concrete on site, but now the floor slab is produced in the factory and then transported to the site for assembly. The advantage of this is that it avoids the dusty scene of the pouring on-site construction, and can also greatly improve the construction efficiency.

This kind of prefabricated building is more like workers playing a large-scale building block building game. The templates are produced in advance and can be installed according to the instructions. It is indeed much more convenient than concrete pouring on site, and it also avoids concrete pollution and waste.

In the "Several Opinions on Further Strengthening the Management of Urban Planning and Construction" proposed by the State Council on February 6, 2016, Article 11 of the fourth point also clearly pointed out: develop new construction methods, vigorously promote prefabricated buildings, and reduce construction Garbage and dust pollution shorten the construction period and improve the quality of the project. Formulate specifications for the design, construction and acceptance of prefabricated buildings. Improve the standards of parts and components, and realize the factory production of construction parts and components. Encourage construction enterprises to prefabricated construction and on-site assembly. Build a national prefabricated construction production base. Increase policy support and strive to make prefabricated buildings account for 30% of new buildings in about 10 years. Actively and steadily promote steel structure buildings. Where conditions are available, advocate the development of modern wood-structured buildings.

Therefore, on the whole, prefabricated buildings have still become an unstoppable trend. As early as around the 1960s, European and American countries have begun attempts to prefabricated buildings. For some small buildings, prefabricated construction has been adopted. Through this process, a large amount of technical experience and talents have been accumulated.

However, the domestic prefabricated construction is still in its infancy, and there is no large number of applications. The traditional on-site construction and pouring still dominate the mainstream. After the concrete is produced at the commercial mixing station, it is transported to the construction site by a mixer truck, and pumped by machinery. Come to pour. The emergence of such prefabricated buildings will inevitably eliminate commercial mixing stations, mixer trucks, pump trucks and other equipment, because after the centralized production of prefabricated parts, the concrete pouring method will inevitably change, and there is no need for so many links and Equipment support, does this mean that equipment such as mixer trucks and pump trucks will be eliminated?

First of all, it is definitely impossible for prefabricated buildings to completely replace the existing construction methods in a short time. Although this method has been widely used in the construction of some bridges, there are still many considerations for building houses. The problem.

How safe is the service life of this prefabricated building? Whether the transportation of prefabs is convenient, etc., will also limit the rapid development of prefabricated buildings, and at the same time, consumers have not fully recognized this construction method. Therefore, it is difficult for prefabricated buildings to completely change the existing construction methods in a short time. Therefore, commercial mixing stations, mixer trucks, pump trucks and other equipment are still necessary to be used.

At the same time, the existing prefabricated buildings also need to build the entire frame with reinforced concrete in advance. This process can only be constructed and poured on site, and still depends on the existing concrete supply method.

The high transportation cost of structural parts also affects the construction cost of prefabricated buildings. At the same time, special vehicles for the transportation of such concrete structural parts are still rare in China. After all, the weight of a prefabricated part is definitely not the weight of an ordinary trailer. It's okay.

For manufacturers of equipment manufacturers of mixing stations, mixer trucks, and pump trucks, they also need to be prepared for danger. If prefabricated buildings do occupy the market one day, these equipment will inevitably lose their usefulness. Cranes, truck cranes, tower cranes, heavy-duty transport vehicles and other equipment will exert their maximum effect, because the installation of prefabricated parts requires the participation of a large number of lifting equipment, which will also lead to a major change in the construction machinery industry.

We can’t predict whether prefabricated buildings will become the mainstream, but we should keep trying and accepting new technologies. Maybe you can seize an opportunity, maybe you can also let yourself lose your job and share your encouragement with you. .