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Can you think of why? ▲ the insulation is made indoors and is sprayed with styrofoam, which is much easier to construct than the method of pasting insulation board on the external wall commonly used in northern China.

This precast house has a total of 50 floors.

The author visited the construction site of a 50 story precast house built by Wuyang, Japan, and had many feelings and exclamations.

The project is a 50 story precast super high-rise residence, which is a column seismic joint.

Yes, it’s also a disposable safety helmet for the host! Unlike the black, sweaty and dusty helmets often seen on domestic construction sites.

Different from the usual practice of external thermal insulation in China, the external wall facing brick is directly pasted on the precast concrete components.

After the installation of the floor slab on site, a layer of floor reinforcement will be anchored into the post cast concrete slab.

▲ precast components transported to the construction site ▲ the upper row of reinforcement of the beam is bound with the precast components in the factory.

It seems that the construction deepening design is more careful and serious! ▲ the wallboard transported to the floor for installation ▲ the balcony wallboard installed ▲ the node of the seismic column installed ▲ the hook of the hanging electric pipe line is directly adhered to the precast floor without casing or bridge, and the colorful lines distinguish different functions ▲ the toilet is also an industrialized overall finished product, with internal walls Floor tiles and bathroom decoration have been fixed in the factory.

▲ Japan is a country with many earthquakes, and its seismic technology is very advanced.

It’s a brand-new sanitary cap for visitors.

You can see that the sound insulation design is very in place and the effect must be very good.

When we visited, it has been installed and constructed to the 40th floor.

Erection Anchor

Transition pads are carefully set at the place where the hose meets the return beam, so as to prevent the deformation caused by gravity from affecting the smoothness in long-term use.

▲ the external wall facing brick has been completed in the factory with the precast components.

There is no need to worry about the falling off of the external wall insulation, and it is easy to update after decades of use.

Isn’t it amazing? ▲ the joints of precast beam and column components are made of on-site post cast concrete ▲ we just went upstairs by the construction elevator and just saw that the precast beam on the ground car had been hoisted.

▲ the concrete inverted sill of the corridor wall is embedded with installation holes and connecting iron parts ▲ the embedded parts required for the wall under the beam are buried in the factory.

▲ for the installation of precast columns, the embedded parts for on-site installation and support have been reserved in the factory in advance.

Careful, you feel and sigh about Japan’s lean construction as much as I do.

Look, the 8 screw holes of each embedded part are not bad.

I really want to see more.

How fast the work efficiency in Japan is! ▲ a group of five workers cooperate to install the precast beam ▲ the hole for electromechanical threading is reserved on the beam during prefabrication in the factory ▲ even the embedded parts connected by the tower crane are embedded in the prefabrication factory.

Source: the construction business department of China Resources Land has a rare opportunity.

▲ the formal stairs are cast steel structure, and the construction and installation is two floors faster than the floor structure, so as to facilitate the passage of construction personnel up and down, which not only saves the cost of temporary access, but also is very safe.

The author also saw that each bolt and nut was slashed with a colored pen.

Galvanized shaped supports are used.

The host also prepared gloves and disposable socks for the visitors.

The two-hour visit soon ended.

The indoor wall installation, electromechanical construction and decoration construction below are closely and orderly connected, It is necessary to finish the project soon after the main body is lifted and sealed.

▲ the drainage riser is covered with sound insulation cotton ▲ this is the construction model of the floor.