3.

For key types of work such as component assembler and grouting worker.

Prepare the foundation tools and start the hoisting and installation of precast components.

The hoisting of the composite floor slab is mainly divided into three steps: the first step is to install the spreader at the hoisting point of the composite floor slab according to the design requirements..

Independent supports and keels shall be installed according to the design drawings and scheme requirements.

Hoisting steel beam the manufacturing of hoisting steel beam is carried out by professional manufacturers.

The PE strip shall be fixed on the lower precast external wall insulation layer and installed firmly.

Fifth, the outer side of the precast exterior wall shall be sealed with PE strips or other elastic materials before the installation of the precast exterior wall.

Generally, three to four mm steel plates are used, and small square steel keels are used around for edge fixing.

The long rod adjusts the verticality of the wall through the rotation of the handle.

Carry out various forms of job skills training to promote the transformation of traditional construction workers to chemical workers in the cast construction industry.

With the strong support of the government, industries and enterprises should continue to strengthen the training of precast construction project managers and skilled workers.

Use the leveling instrument to preliminarily adjust the keel height according to the elevation of the bottom of the laminated plate.

The upper row of holes is used to connect with the steel wire rope of the tower crane, and the lower row of holes is connected according to the different hanging nail positions of the components.

The first link: tools and instruments preparation several tools commonly used in hoisting construction: first, the positioning steel plate should ensure its strength in the production of positioning steel plate.

The inclined support shall be installed on the top plate in advance.

It is mainly divided into four steps: the first step is to check whether the spreader is firmly installed before component lifting.

After finishing the preparation work, start the hoisting.

Fixing Socket Waved End

And temporarily fix it with triangular support.

In the second step, when the vertical component is hoisted to about four meters above the operation surface, the guide rope is used to preliminarily control the component direction to the component height that can be touched by the operator.

Due to different types of components, the preparation work and hoisting process are completely different.

1.

2、 Crow’s beak spreader duck’s beak spreader is a special lifting tool for lifting precast components such as walls and stairs.

If the conditions of vertical component storage area permit.

The other is a small hole, which is used to locate and adjust the sleeve reinforcement.

First, the steel bar positioning steel plate shall be used to check and accept the relative and absolute position of the sleeve reinforcement.

After installation.

It needs to calculate the stress of hoisting steel beam before manufacturing, and its length is designed according to the size of unused components.

If the alignment of sleeve grouting reinforcement is qualified, 60 points can be obtained, and 100 points will be obtained when the installation difference of vertical components becomes 0 mm.

There are two kinds of holes on the plate surface.

4.

Second, 50 or 30 lines of vertical component wall body shall be placed on the top plate.

The second link: hoisting and installation of vertical components.

Solid lines at component edges and wall ends.

If there is no sliding hook, continue to lift if it falls off.

The third link: the installation of laminated floor slab shall be prepared in the following two aspects before the hoisting of laminated slab.

It is divided into long rod and short rod.

3.

Avoid cumulative errors in the installation of laminated plates.

Xiaobian has sorted out a complete graphic version for your reference and study.

Universal hanging nail is a special lifting tool for lifting PCF board, which is used together with the embedded sleeve in PCF board.

To this end, the Beijing Municipal Commission of housing and urban rural development organized relevant enterprises and experts to film and complete the teaching film of public welfare lectures on construction workers’ training and education.

Fourth, the bottom elevation of vertical members shall be adjusted.

Independent support is a support system for laminated plates.

2.

The size of the small hole depends on the diameter of the sleeve reinforcement.

Step 4: take off the hook.

The above is the introduction of three kinds of lifting appliances commonly used in hoisting construction.

Subsequently, the general office of the State Council and the provincial and municipal policy documents on the development of precast buildings were issued one after another.

The temporary inclined support connectors can be installed on the vertical members in advance.

The CPC Central Committee and the State Council issued several opinions on improving and strengthening the management of urban planning and construction, and proposed to strive to make the proportion of precast buildings in new buildings reach 30% in about 10 years.

The arrangement of independent supports needs to be calculated and reasonably designed.

Use the reflector to observe the position of reinforcement and sleeve, and then fall slowly.

Large holes are used for concrete pouring and vibration.

5.

It consists of four parts: tripod, pole u support and aluminum beam.

The short rod adjusts the position of the wall body through the rotation of the handle.

In addition, there are two rows of holes at the top and bottom of the hoisting steel beam.

Install the temporary diagonal support firmly with an electric wrench and remove the hook.

Installation of laminated floor slab.

It is used for lifting with embedded lifting nails.

Check the precast wall with guiding rule after positioning.

The component continues to fall to about 50cm away from the operation surface.

In recent years, our government attaches great importance to the development of precast buildings.

The third step is to preliminarily check the deviation between the component and the installation position line after the component is in place.

Position control line of vertical components.

How to ensure the implementation of policies and the construction of relevant talent team is the key.

The most difficult is the alignment of sleeve grouting reinforcement and the installation position of vertical components.

Third, the temporary inclined support and its connector shall be installed on the top plate in advance.

3、 Hook hook is a special tool for hoisting laminated plate.

2.

One is a large hole with a diameter of 100mm.

According to the requirements of the drawing, the control line for the installation position of the laminated plate shall be placed at the opening of the wall.

The hoisting and installation of vertical components is the key play of hoisting and installation.

Adjust the bottom elevation of vertical components.

Independent support and diagonal support temporary diagonal support is used for temporary fixation of precast walls.

Mark with red paint after verification.

Here are four common components: precast wall, precast staircase, precast laminated plate and precast cantilever plate.

Before hoisting and installation of vertical components, five preparations should be made.

Component door and window opening line.

When the component is lifted to 50cm from the ground, pause slightly.

Use a level gauge to adjust and check the elevation of the embedded leveling bolt or gasket.

Until the component is completely dropped.

The first episode of the teaching film is component assemblers.

1.

External edge sealing of precast exterior wall.

Check the sleeve reinforcement.