by Abstract: This paper discusses the template making and component production of PC components of new prefabricated buildings, and deeply discusses the key points of PC component construction technology of new prefabricated buildings, so as to ensure that the construction quality of prefabricated PC components can achieve the expected goal.
1 overview of PC component formwork for new prefabricated buildings 1.1 application advantages of PC component formwork for new prefabricated buildings.
The application advantages of PC component formwork for new prefabricated buildings are mainly reflected in five aspects: superior safety performance, high component quality, high structural production efficiency, low construction cost and good environmental protection of construction links.
(1) The superior safety performance is mainly reflected in that the component formwork is uniformly manufactured by the factory according to the contents of the drawings and relying on the rigorous production process, with high production technology level, strong stability of production links and no safety accidents.
(2) The high quality of components is mainly reflected in the advanced and efficient production technology involved in the production process of PC components, and the production equipment is professional high-performance production equipment.
Therefore, the requirements of all parties of PC component formwork can be guaranteed, and the product quality is superior.
(3) The structural production efficiency is mainly reflected in that when the size and specification of PC component formwork are determined, the production process and installation process are very standardized, which can greatly improve the installation efficiency.
(4) The low construction cost is mainly reflected in that the mold structure is a kind of tool that can be reused for many times, so the production cost is low.
However, it should be noted that in order to give full play to the function and role of the mold structure, quality control should be done well during the manufacturing of the mold structure to make the manufacturing link more standard, which is a key management content.
(5) The good environmental protection of the construction link is mainly reflected in the application process of PC component formwork.
The construction amount involved in the construction link is small, and the construction process will not pollute the surrounding environment.
In addition, there is no need to use too many construction materials in the construction process, so as to avoid the problem of waste.
1.2 key points for the application of PC component formwork of new fabricated buildings since PC component formwork is uniformly manufactured by the factory, the manufacturer needs to have certain production conditions, such as production facilities, production technology and plant area, and can start the production of PC component formwork only after ensuring that all elements can be implemented in place, so the initial cost is high.
In order to reduce the initial cost expenditure and improve the convenience of PC component formwork production, before the production of PC component formwork, corresponding planning and management should be done to make all production personnel master the operation methods of relevant equipment and the application points of production technology, and organize corresponding training and exchange activities to ensure that the comprehensive ability of production personnel meets the production standards of PC component formwork.
During the production period, the production personnel should also develop a good awareness of quality control.
If there are quality problems in the production process, they should be solved in time to avoid the production of PC component formwork with quality problems, which will affect the subsequent construction.
Secondly, when the production is completed, it shall be transported to the construction site.
There are certain risks in the transportation of PC component formwork.
Managers should do a good job in the supervision and control of transportation links from the perspective of PC component formwork transportation, so as to make the transportation process faster and more efficient and avoid safety risks, so as not to affect the quality and structural performance of PC component formwork.
2 new prefabricated building PC component formwork fabrication during the construction of prefabricated building engineering, PC components are mostly concrete prefabricated components, including precast beam concrete components, precast floor concrete components, precast foundation concrete components, etc.
In order to ensure that the size, specification and quality of each fabricated PC component meet the requirements of engineering construction.
The production personnel of prefabricated PC components shall do a good job in formwork production to ensure the accuracy and production efficiency of concrete components.
It can be seen that the production link of PC component formwork is the basic factor affecting the construction quality of prefabricated PC component production and subsequent construction links.
The production personnel shall ensure that the specification and size of formwork tools meet the production requirements of prefabricated PC components, improve the production quality of prefabricated PC components, strengthen the construction effect of prefabricated concrete engineering, and promote the sustainable development of China’s construction industry.
3 production of new prefabricated building PC components 3.1 mold design during the production of prefabricated building PC components, various parameters of the formwork structure are closely related to the specification, model and size of prefabricated PC components.
Common formwork is mainly composed of side and bottom formwork and reserved hole formwork.
When the concrete structure is formed, the production personnel shall take out the hole formwork on both sides, However, because the hole formwork is located inside the structure, the demolition process is more troublesome.
At this stage, the formwork removal is mostly handled manually, which will greatly increase the difficulty of demoulding, and the demoulding efficiency can not be guaranteed, affecting the subsequent engineering construction.
Relevant technicians shall design corresponding mechanical demoulding device according to the actual situation of fabricated PC components to improve the efficiency of demoulding link.
3.2 rebar binding and casing positioning rebar binding and casing positioning can directly affect the production quality of fabricated PC components.
Taking the column component as an example, technicians should do a good job in the blanking of reinforcement according to the reinforcement layout of the column component, and scientifically and reasonably design the size of reinforcement.
First set the connecting sleeve on one side of the reinforcement, then place the reinforcement cage on the component production line, and fix the connecting sleeve above the formwork through screws to ensure accurate positioning.
3.3 the mold installation and inspection technicians shall timely clean the side formwork and bottom formwork, and install the formwork on both sides based on the actual situation of the mold.
During installation, the side formwork shall also be positioned.
Finally, bolts shall be used to connect the side formwork with the bottom formwork.
Based on the contents of the design drawings, judge whether the size of the formwork after installation meets the engineering construction requirements, and then start the next process..
