by Source: Shanghai Construction Site (shanghaigongdi) Recently, Tunneling Co., Ltd.
has played a new trick: take you into Shanghai Urban Construction Prefabricated Parts Co., Ltd., a municipal group of Tunneling Co., Ltd., with live broadcast, and take you to know the largest prefabricated parts production base in Shanghai in an all-round way.
It is believed that many friends like playing Lego, but have you ever seen the grand scene of a huge project built with real “Lego bricks”? Now, I will explain the mystery for you.
What is a large Lego (prefabricated component)? Prefabricated components are prefabricated concrete.
All parts of the building, such as columns, beams, walls, floors, stairs, balconies, etc., are made into various reinforced concrete components by using the industrial production method of the factory.
The English name is PrecastConcrete, or PC for short.
This “Lego” factory × where? Overview of the Base Shanghai Urban Construction Prefabricated Component Co., Ltd., a subsidiary of the Tunnel Municipal Group, is a reinforced concrete prefabricated component manufacturer with a history of more than 50 years.
It is the first enterprise in Shanghai to invest in the “PC residential project”.
Since the construction of No.
1 Test Building in 2010, it has accumulated 7 years of PC construction experience and has a professional technical management team.
▲ The gate of the base mainly produces prefabricated components in three aspects.
Please listen to the editor.
The first stop: residential building PC ▲ residential building PC ▲ Qin Chen: the introducer of the PC part of residential building, what are the advantages of prefabricated component technology in residential building compared with our traditional building methods? Follow the steps of Xiao Bian and go to the scene to learn about it! Xiao Bian was the first to come to the PC exhibition hall of Housing Construction.
As soon as he entered the exhibition hall, he was attracted by the introduction on the wall…
After introduction, Xiao Bian learned that the two main assembly frame structures used in the PC of Housing Construction were mainly displayed.
That is, the assembled integral frame cast-in-situ shear wall structure and the assembled integral frame structure.
The main difference between the two frame structures is the difference in the main bearing body.
The main bearing body of the shear wall structure is the wall, and the main bearing body of the integral frame structure is the frame.
During the journey, Xiao Bian noticed a distinctive room, which was specially exposed to the prefabricated components of the wall for full display.
It can be seen that the shape of the wall is very regular, and it is smoother than the cast-in-place wall.
This is mainly because the steel formwork is used for pouring, which is different from the traditional wood formwork.
Its error is controlled at the millimeter level, and the touch is better.
In addition to the wall, the window also uses the prefabricated technology.
The aluminum alloy window frame is embedded in the prefabricated component wall of the project department, which can ensure that there is no gap and no water seepage between the window and the wall.
When we came to our outdoor exhibition area, we saw the sample of prefabricated accessories commonly seen in the house building PC.
Wait, Xiao Bian seems to have seen something amazing? Excuseme ？ Have you seen chips installed in mobile phones and computers, but chips installed in buildings? Great, my construction site! Can you think of the whole life cycle inspection from the production, hoisting and later maintenance of components? As long as you scan the chip, you can read the information? For example, information such as who makes it, production time, inspectors, strength marks, component grades, etc.
are all available.
This mainly reflects the application of BIM information technology in PC building construction.
The virtual simulation technology is used to simulate the process before construction, and eliminate the on-site construction hazards in advance.
Optimize the construction process to achieve efficient management.
▲ Not only that, but also the exterior wall decoration you want can be pasted on the production base in advance through the prefabricated wall.
▲ Porcelain tile facing prefabricated wallboard, the exterior wall facing made for Imperial University of Japan, can effectively improve the construction efficiency ▲ Terrazzo facing prefabricated wallboard, with the effect of marble facing, is not easy to fall off.
The wall facing through prefabricated components has higher connection strength and lower cost.
In the Shanghai Urban Construction Pujiang Base Ruihe New City Lot 05-02 Security House Project, the overall structure of the project is a fabricated integral frame cast-in-situ shear wall structure.
The external wall is made of prefabricated concrete hanging plates with clear water.
The thermal insulation is in the form of internal insulation.
The construction site is clean and tidy, which also reduces the impact on surrounding residents.
The second station: municipal bridge PC ▲ municipal bridge PC ▲ Sun Hao: Compared with the traditional bridge construction, what are the advantages of prefabricated bridge construction? Especially for rapid construction, time is benefit, is there any? After visiting the PC exhibition hall and components of housing construction, Xiao Bian followed our lecturers to the joint processing center established for the new project of S26 urban section, which mainly produces columns and bent caps in bridge projects.
Follow Xiao Bian to see the “secret base”.
In the process of municipal bridge prefabrication and assembly, the main prefabricated accessories are columns and capping beams.
Their production processes are mainly reinforcement bending processing → reinforcement cage welding and binding → reinforcement cage and formwork transition → concrete pouring → solidification and removal of formwork → column and capping beam maintenance.
Schneier’s complete set of CNC equipment, the “secret weapon” for processing steel bars, has a steel bar capacity of about 100 tons per day.
At the same time, the machine is operated to process steel bars more accurately and improve efficiency.
Column reinforcement cage binding workshop Capping beam reinforcement binding workshop was shocked when it arrived at the production workshop! This is mainly the binding and welding area of the steel wire cage of the column and bent cap.
Concrete pouring area ▲ Column concrete pouring ▲ Capping beam concrete pouring area The steel cages and formworks of columns and capping beams will be transferred here for concrete pouring, which will eventually be formed here, and the formworks will be removed at the same time.
Finally, the finished product curing and storage area of columns and bent caps is reached..
