by With the rapid development and application of assembly technology, component prefabrication has become a new construction method.
The standardized and industrialized production of construction components can not only save materials and reduce construction costs, but also improve work efficiency and develop green construction.
This paper is about 15 typical component prefabrication technologies popularized and applied by China Construction Third Engineering Bureau, for reference in the project.
1.
During the detailed design of prefabricated exterior wall, the prefabricated exterior wall integrated with thermal insulation, doors and windows, and tiling (coating) shall be used for the external wall of the building, and shall be hoisted in a centralized manner.
In the later stage, only finishing work is required.
It can reduce the hidden danger of external wall seepage.
2 Prefabricated bay windows and bay windows shall be made of prefabricated components and aluminum alloy window frames shall be embedded.
In the later stage, only glass shall be installed.
Drip lines shall be set on the top of the windows to solve the waterproof problem.
3 Prefabricated components shall be used for prefabricated stair and staircase partition, wet operation of the whole staircase shall be canceled, and handrail connectors shall be embedded for prefabricated staircase partition to avoid opening when installing handrails.
4 Prefabricated floor slabs are applied, especially the factory prefabrication of toilet floor slabs.
The reserved holes of pipes can be cast into shape at one time to improve seepage prevention.
5 Prefabricated balconies and balconies shall be made of prefabricated components, and the lamp box and wire tube of the sun table shall be embedded, the water stop joint of the riser shall be embedded, and the installation holes of the railings shall be reserved.
10mm shall be reserved for connecting nodes with prefabricated components, and 15mm thick adhesive tape shall be used to connect PC components, which shall be fastened by pressing to prevent mortar leakage.
6 During the detailed design of prefabricated bathroom, the bathroom shall be deepened into prefabricated integrated bathroom, which shall be directly hoisted to the toilet during the construction of the main structure to reduce the construction process, reduce the hidden danger of water seepage in the toilet and save the construction period.
7 During the temporary road construction of prefabricated road project, prefabricated roads shall be assembled to save the waiting time of cast-in-situ concrete strength.
In the later stage, the prefabricated roads shall be directly transported and recycled to improve the use rate of prefabricated roads and avoid the waste of building materials and environmental pollution.
8.
During the construction of prefabricated cable trench outdoor cable trench, prefabricated finished cable trench shall be used.
After earthwork excavation, it shall be directly assembled to reduce the process of formwork erection and reinforcement binding, save construction time and be less affected by natural weather.
9.
Prefabricated floor insulation layer shall be constructed by structural slope making, prefabrication of floor insulation layer and protective layer, and shall be installed and formed at one time.
10 Prefabricated roof drainage ditch Prefabricated roof drainage ditch is integrated with roof insulation layer.
11.
Prefabricate the air conditioning holes in the hollow brick wall of the prefabricated air conditioning holes in advance and install them on site, which is conducive to reducing construction waste and keeping the site clean.
12.
Prefabricated components shall be processed in advance for embedded blocks of prefabricated wire boxes, and the wire boxes shall be embedded.
Prefabricated components shall be installed directly with the secondary structure construction, with less slotting, and the progress shall be accelerated.
13 Prefabricated U-shaped block uses U-shaped block as the formwork of secondary structure lintel, which saves formwork, has fast construction speed, saves labor, and has good molding quality.
14.
Optimize the layout of the electric shaft by prefabricating the side formwork components between the cable tray of the electric shaft, determine the position and size of the hole where the bus of the cable tray passes through the plate, use PC small components (which can be replaced by cheap stones) as the side formwork of the hole during the ground construction of the electric shaft, and finish the ground decoration at one time.
15 The PC construction method of foundation cushion cap adopts PC board to replace the traditional brick mold, reduce the construction amount of masonry painting, and improve the foundation construction progress and cushion cap forming size accuracy.
Appreciation of Luban Prize for Construction Engineering Daily selection of Luban people exchange in construction engineering, release in the evening the idea of combining learning with fun, make common progress ↓ long press identification, and join the alliance ↓..
