Prefabricated buildings and double screw sleeves
- Product relationship -
1. The "past life" and "present life" of prefabricated buildings
The origin of prefabricated buildings can be traced back to the founder of "beam and column" buildings. Mortise and tenon structure” It was the European continent that gave rise to prefabricated buildings in modern times. At that time, European houses were generally devastated by war, people's living conditions were not guaranteed, and there was a shortage of labor at that time. Prefabricated buildings began to take shape at this time. It was built quickly, required less labor, and at the same time met the needs of Short-term demand for housing.
(mortise and tenon structure diagram)
(Germany’s first concrete component)
Prefabricated building, as the name suggests, moves the work that is traditionally done at the construction site to the factory. The building components and accessories are made in the factory and transported to the construction site. On-site for assembly and installation. Why should our country vigorously develop and promote prefabricated buildings?
2. Reasons
1: Rapid urban development: The original cast-in-situ construction technology has slowly been unable to keep up with the speed. With the rapid increase in urban population, housing problems have become increasingly prominent.
2: Rising labor costs: Under the original construction model, too much manpower was invested. With the emergence of an aging population, the labor cost issue has gradually become a major problem in the construction industry.
3: Rapid progress in science and technology level: With the explosive progress in my country's science and technology level, the construction industry is also slowly changing and gradually becoming technology-intensive.
4: Considerations for environmental protection and quality safety: It can be seen from the "Uniform Standards for Reliability Design of Building Structures" that we currently have increasingly higher safety requirements for the construction engineering industry, which must not only ensure improved quality and speed up construction, etc. Pay attention to environmental issues. In the traditional construction industry, on-site construction will inevitably cause a large amount of dust, construction waste materials, noise during construction, etc. Prefabricated buildings can very well reduce the emission of waste materials in these aspects, and every resource can be well utilized. There have been great breakthroughs in environmental protection.
The various conditions above show that compared with the traditional construction industry, the new construction industry can save resources and energy in the process of building construction and use to the greatest extent, and improve the efficiency and quality of construction projects. This has become an inevitable development trend in my country's construction industry.
3. Why choose double screw sleeves
So what role does the double screw sleeve play in the new construction industry of prefabricated buildings? The core steps of prefabricated buildings are: prefabrication and installation. In prefabricated buildings, components are prefabricated in the factory and then sent to the site for installation. During the installation process, if a single steel bar or a bundle of steel bars cannot move or rotate, the external thread coupling in the sleeve of the double threaded sleeve is rotated to form an effective connection with the end thread of the steel bar. Simply rotate the external thread. The sleeve is connected to the inner threaded sleeve. The steel bar does not need to rotate and the strength can reach the industry standard first-class strength. It has tolerance for the deviation and misalignment of the steel bar.
(double screw sleeve installation comparison picture)
(extended wire installation comparison picture)
(reinforced cage prefabricated installation)
(double screw sleeve product picture)
It seems that the double screw sleeve can quickly and stably solve on-site problems. The installation requirements can also be achieved without open flames, pollution-free, and in line with environmental protection requirements. In terms of reducing labor costs and labor, the excellent performance of the double screw sleeve also better solves this problem. In terms of use, the double screw sleeve does not require too many workers to fix or weld the steel bars. It only requires a wrench worker and 20 seconds to complete the fixing of the double screw sleeve. Completion quickly and efficiently is the core of prefabricated construction.
(Double screw sleeve actual installation picture)
(Double screw sleeve on-site picture)
4. Summary
In a modern society with rapid development of science and technology, it is often impossible to consider a single issue. Prefabricated buildings are an important part of the circular economy of modern cities. Since the "Twelfth Five-Year Plan", construction industrialization has received great attention from the State Council and the Party Central Committee. In March 2014, the Central Committee of the Communist Party of China and the State Council issued the "National New Urbanization Plan (2014-2020)", which clearly stated the requirements of "significantly increasing the proportion of green buildings" and "strongly promoting the industrialization of construction". During the "Thirteenth Five-Year Plan" period, Our country is in a critical period of ecological civilization construction, new urbanization and the implementation of the "Belt and Road" initiative. It is vigorously developing construction industrialization. It is necessary to transform the urban construction model, promote energy conservation and emission reduction in the construction field, improve the environmental quality of urban people, and accelerate the construction industry. Upgrading has a very important role and significance. The positioning of
double screw sleeve products can be said to be able to bear the heavy responsibility in the process of connecting steel parts in prefabricated buildings. Compared with the connection method of steel parts in traditional buildings, it is more environmentally friendly, faster, shorter construction period, and earthquake resistant. It meets the requirements of "green building" under the new situation and brings the prefabricated construction industry into a golden period.
