What is the most important lifting step? The vanity mirror in the above figure is prepared for the precast column hoisting.

What are the advantages of precast buildings? Why are these developed capitalist countries so keen on precast buildings? The reasons are as follows: 1.

After the hoisting of precast components is completed, the reinforcement at the connection part shall be bound, and the pouring of the node and the cast-in-place layer of the beam and slab shall be carried out at last.

02.

4.

First of all, on the exterior wall, this kind of lock type splicing method is used, and some of them are connected with steel skeleton.

3.

There are a large number of workers on the traditional operation site.

It is beneficial to adjust the supply relationship, improve the listing speed of real estate, and slow down the current situation of insufficient supply in the market.

The lower space is narrow and it is not easy to observe.

Therefore, such “industrialized” and “industrialized” buildings have been widely used in Europe, America and Japan.

Just like moving houses, we usually arrange the order of moving goods to reasonably reduce the workload.

How are cast components produced? Take the precast building slab as an example, the production process: steel formwork production → steel bar binding → concrete pouring → demoulding.

Compared with traditional construction methods, precast buildings can not only be faster and more convenient, but also save manpower and materials.

The construction process takes the precast frame structure as an example.

Prefabrication rate=total volume of precast members ÷ total concrete volume.
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What is the precast building? Like Lego, the precast building will prefabricate some or all components in the factory, and then transport them to the construction site for assembly.

It is beneficial to speed up the progress of the project, and the efficiency is the return.

After the popularization of the industry, the construction cost can be reduced and the house price can be effectively controlled.

5.

The precast building is about 30% faster than the traditional way.

“Assembly” is not just “erection”.

Take the connection node of the main and secondary beams as an example to show the diversity of the processing methods of the connection between the cast components: the connection side node of the main and secondary beams – the connection middle node of the main and secondary beams with the reserved notch of the main beam – the connection node of the main and secondary beams with the reserved post-cast section of the main beam – how can there be no error in the number of components with the corbel set on the main beam? That is to number the assembled components! In order to ensure that workers will not make mistakes, reduce construction errors, and speed up the progress of the project, each component has been issued with an ID card, which has its own unique ID number, so that it is convenient to take the seat according to the number.

After the precast components are transported to the construction site, the reinforced concrete will be overlapped and poured, so the assembly room is very safe.

The precast components are precast in the factory to improve the construction quality, which can minimize the common quality problems such as wall cracking and leakage, and improve the overall safety level, fire resistance and durability of the residence.

01.

From then on, we say goodbye to “grey”.

After demoulding, the finished cast plates and cast components are cast, temporarily stacked in the factory by classification, and then ready to be transported to the construction site.

Assembly rate=implemented assembly area ÷ total capacity area on the ground.

6.

The whole process of precast building from production to construction is illustrated.

It is beneficial to environmental protection and resource conservation.

What is the highest technical requirement in the above steps? The answer is the hoisting of precast components.

Bubble Panel Pad

At present, the floor slab usually adopts the form of 7+8 (70mm thick precast floor+80mm thick cast-in-place layer).

When building the interior wall, first install the skeleton, and then directly splice it, which is convenient and fast, and also convenient for subsequent removal and modification.

Hyaluronic acid, which is conducive to improving the construction quality, can make the construction products lasting and youthful.

Then fill, and finally add sealing strip sealant.

After the pre-assembly of the frame structure girder and the hoisting of the display area of the shear wall residence are completed, the reinforcement of the cast-in-place layer is bound, and the cast-in-place layer concrete is ready to be poured.

Now, a large number of site operations are moved to the factory.

2.

It is conducive to civilized construction and safety management.

After the construction of the first floor is completed, the columns of the previous floor shall be hoisted first, and then the main beam, secondary beam and floor slab.

There are two important indicators for precast buildings: the proportion of assembly area and the prefabrication rate.

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There can be many connection modes between precast components.

After the factory of indoor fine decoration, it can realize the delivery at home, which is quick and good.

All kinds of precast components such as walls, slabs and stairs have their own unique numbers.

Through the reflection principle of the small vanity mirror, it is convenient to connect the reserved reinforcement in the lower layer with the hole in the upper precast column.

Only a small number of workers are left on the site, which greatly reduces the incidence of on-site safety accidents.

Assembled composite beam hoisting Assembled composite plate hoisting can also play a demonstration role in pre-assembly or construction of precast display area on site for parts with great difficulty in hoisting.

In order to ensure the smooth lifting, after the precast components are transported to the site, it is necessary to reasonably arrange the stacking site for the convenience of lifting.

The original cast-in-place operation on the site is very few, and the health does not disturb the people.

In order to increase the connection between the cast components and the cast-in-place layer, and ensure the reliability and safety of the structure, the surface of the cast components are left with keyways or rough treatment.

04.

During the whole construction process, these small precast slabs can be said to be the most important.

What is the precast building? What are its advantages? How are precast buildings produced? How is the site constructed? Xiao Bian brings you to understand.

05.

Source: Tencent video.

Although they look very simple, they need accurate data to ensure the success of splicing, so they also need to be particularly careful in drawing.

03.

There is no need to queue up all night to buy a house.

Finished cast components are loaded and transported to the site.

Holes shall be reserved when binding reinforcement.

Concrete pouring and assembly line operation.

Cost control Cost control and design management are the finishing points of the implementation process of precast buildings.

In addition, the reuse rate of steel formwork and other materials is improved, and the waste, loss and energy saving can be reduced by more than half.

The hook shall be embedded in the rebar binding.

Therefore, it is not unreasonable for the country to promote precast buildings.