by Source: Shanghai construction site (shanghaigongdi) recently, tunnel Co., Ltd.
played a new trick: live broadcast will take you into Shanghai urban construction prefabricated component Co., Ltd., a municipal group of tunnel Co., Ltd., and bring you a comprehensive understanding of the largest prefabricated component production base in Shanghai.
I believe that many friends like to play Lego, but have you seen the spectacular scene of building a huge project with large-scale real-life “Lego blocks”? Below, Xiaobian 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 manufactured into various reinforced concrete components by the industrialized production mode of the factory.
The English name is precastconcrete, which is referred to as PC.
This “LEGO” factory is a cow × where? Overview of the base: Shanghai urban construction prefabricated component Co., Ltd., a subsidiary of tunnel municipal group, is a reinforced concrete prefabricated component manufacturer with a history of more than 50 years.
It is the first enterprise to invest in “PC residential project” in Shanghai.
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.
▲ base gate: the base mainly produces prefabricated components in three major aspects.
Please listen to the editor to come together.
First stop: Housing construction PC ▲ housing construction PC ▲ Qin Chen: what are the advantages of prefabricated component technology in housing construction compared with our traditional building methods? Follow Xiaobian’s steps and go to the scene to learn about it! Xiao Bian first came 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 the introduction, Xiao Bian learned that the two assembly frame structures mainly used in the PC of housing construction are 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 of the load-bearing body.
The load-bearing body of the shear wall structure is the wall, and the load-bearing body of the integral frame structure is the frame.
During the journey, Xiaobian noticed a different room, which was specially exposed to fully display the prefabricated components of the wall.
It can be seen that the shape of this wall is very regular, and it is more smooth than the cast-in-situ wall.
This is mainly because the steel formwork is used for pouring, which is different from the traditional pouring method of wood formwork.
Its error is controlled at the millimeter level, and the touch is better.
In addition to walls, prefabricated technology is also used for windows.
Aluminum alloy window frames are embedded in the prefabricated component walls of the project department, which can ensure that there is no gap and no water seepage between the windows and the walls.
When you come to our outdoor exhibition area, what you see is the sample of common prefabricated accessories in housing construction PC.
Wait, Xiaobian seems to have seen something amazing? Excuseme ？ I’ve seen chips in mobile phones and computers, but are there chips in buildings? Great, my construction site! Can you think of the whole life cycle inspection from the production, hoisting and later maintenance of components, so long as you scan the chip, you can read the information? Such as who made it, production time, inspectors, strength label, component grade and other information.
This is mainly reflected in the application of BIM information technology in PC building construction, the application of virtual simulation technology, the process simulation before construction, and the elimination of hidden dangers in site construction.
Optimize the construction process and achieve efficient management.
▲ the component template is not only that, the wall of the prefabricated component can be pasted with the external wall decoration you want in advance in the production base.
▲ ceramic tile facing prefabricated wall panel is the external wall facing of Imperial University in Japan, which can effectively improve the construction efficiency ▲ terrazzo facing prefabricated wall panel has the effect of marble facing and is not easy to fall off.
The wall facing connection strength through prefabricated components is higher and the cost is lower.
The overall structure of the security housing project of Ruihe new town lot 05-02 in Pujiang base of Shanghai urban construction adopts the assembled integral frame cast-in-situ shear wall structure, the external wall adopts the plain prefabricated concrete hanging plate, and the thermal insulation form is the internal thermal insulation form.
The construction site is clean and tidy, which also reduces the impact on the surrounding residents.
Second station: Municipal Bridge PC ▲ municipal bridge PC ▲ SUN Hao: introducer of municipal bridge PC: compared with 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, Xiaobian followed our commentators to the joint processing center set up for the new project of S26 section into the city, which mainly produces columns and capping beams in bridge projects.
Follow Xiaobian to see the “secret base”.
In the prefabrication and assembly process of municipal bridges, the main prefabricated accessories are columns and capping beams.
Their production process is mainly reinforcement bending processing → reinforcement cage welding and binding → reinforcement cage and formwork transfer → concrete pouring → formwork removal by solidification → column and capping beam maintenance.
Schnell’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, it controls the machine to process steel bars, which is more accurate and improves efficiency.
The column reinforcement cage binding workshop and the capping beam reinforcement binding workshop were shocked when they arrived at the production workshop! This is mainly the steel cage binding and welding area of column and cap beam.
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, and finally will be formed here, and the formworks will be removed at the same time.
Finally, we came to the finished product maintenance and storage area of columns and capping beams..
