The fabricated type of shear wall: requirements for design and construction It is also very high, but the most difficult problem is the node processing between each layer.

Because residential buildings are used less, it will not be repeated here.

The technology of design, processing and installation has been mature.

Unfortunately, procrastination has been delayed until this year.

Before this chat, you actually have a good impression of prefabricated buildings.

Due to the shortage of industrial workers, there will be many hidden dangers.

Prefabricated buildings mainly include: prefabricated concrete structure, steel structure, modern wood structure buildings, etc.

The so-called prefabricated building refers to the transfer of a large number of on-site operations in the traditional construction method to the factory, Process and manufacture building components and accessories in the factory (such as floors, wallboards, stairs, balconies, etc.) are transported to the construction site and assembled and installed on site through reliable connection.

The assembly type made according to the design and specifications is still reliable, and there will be no problem within the design scope and service life.

Zhang quandan, a quality inspector, said: in futukang, wages are not important, at least we can find an object.

Assembly type of stairs: no problem.

At present, the prefabricated structure of houses in Zhengzhou is mainly prefabricated concrete structure.

There is no reliable detection means, that is, if there is a problem in the construction, the detection cannot be carried out; 3.

Floor assembly: the technology is very mature.

After listening to them talk about the current situation of prefabricated buildings in Zhengzhou, they investigated other cities and felt it necessary to write an article.

At present, China does not have a perfect talent training system for the construction industry, Front line construction personnel (including grass-roots management), lack of experience, few people understand, and don’t know what’s wrong.

Remarks: assembly rate refers to the comprehensive proportion of prefabricated components used in the main structure, enclosure wall and internal partition wall, decoration and equipment pipeline above the outdoor floor of a single building.

If you need the PDF of these two documents, please add wechat.

For example, there is no problem stacking several layers of building blocks, but the wind blows and the building blocks fall down.

The problem is that there are a lot of reinforcement in the shear wall, so the probability of dissatisfaction with grouting is very high, and there are few grouting workers in the market, so the quality can not be controlled, There is no good quality inspection method (there is no good and convenient inspection method now, and the grouting effect can be detected without damaging the original structure), so the connection of shear wall is still relatively random.

Plate Rebar Anchor

Zheng Zhengwen [2021] No.

in addition to these, you think it is time to push now Another factor in line building: as the demographic dividend disappears, construction worker (migrant workers) the older, the older, the retired, and the younger generation of labor force are unwilling to go to the hard and dirty construction sites.

It means to realize the construction process of construction products by means of “standardized design, factory production, assembly construction, integrated decoration and information management”.

37, which has made it clear that the goal is to build prefabricated buildings in the city by 2020 The distribution rate shall not be less than 50%, accounting for more than 30% of the area of new buildings.

Since 2017, Zhengzhou has also started to implement assembled buildings: Zheng Zhengwen [2017] No.

If you want an answer, please pull it directly to the end of the text.

At present, the commonly used technology is to drill two rows of holes at the bottom of the shear wall, and inject viscose from the lower row of holes.

However, all of them have only one suggestion for prefabricated buildings: “although there are many prefabricated houses on the market in Zhengzhou, you must not buy prefabricated houses unless you have to.”.

It is no problem to choose floor assembly in living room and bedroom.

Among the people chatting, there are those from the Design Institute, the construction unit, and one is the assembly module connecting with the eldest brother of Zhengzhou local real estate enterprises.

At present, the assembly type in Zhengzhou is mainly component assembly, such as stairs, floors, frame columns, shear walls, etc.

For the stacked shear walls, the same problem is also true: Although Zhengzhou is not in the earthquake zone, it is just in case.

If the upper row of holes spits out some excess slurry, it indicates that the gap in the node is dense.

The problem is that housing industrialization needs industrialized construction workers and high-quality workers.

Why the fire of prefabricated buildings “builds houses like cars” was put forward by architect Corbusier.

PS: the text is boring.

The prefabricated exterior wall slab joints are treated with weather resistant glue, which can not be replaced in structure..

Generally speaking, the design and construction technology of assembly buildings are very mature.

(as long as the toilet is not a fabricated floor slab, because if the toilet floor slab is fabricated, it is very easy to leak in the later stage, and it is rare for the toilet to choose the fabricated type) the fabricated type of frame column: residential buildings are rare, and they are rarely done, which has high requirements for design and construction.

Wang Yayong (China’s famous engineering earthquake resistance expert) in short, prefabricated houses: 1.

25 further defines the task: since 2021, in the area within the Third Ring Road of the built-up area in the central urban area of Zhengzhou, new projects (excluding approved government investment projects) shall be constructed with prefabricated construction technology.

In order to promote the assembly policy, the original intention is good, but the implementation is far from that simple.

Prefabricated buildings have many advantages, such as energy conservation, environmental protection, reducing construction waste, controllable construction period, not affected by the weather, reducing labor demand, reducing labor intensity, etc.

Even if it can be detected in the future, it can not be rectified if there is a problem; 4.

However, some developers will choose some component assembly types in some floors in order to improve the project progress: If the concrete is poured below the seventh floor, the fabricated shear wall structure above the seventh floor.

If the shear wall is fabricated, the earthquake resistance is worrying; 2.

Last summer, friends got together and inadvertently talked about prefabricated buildings.