Factory production and processing technology of prefabricated components?

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4. 10, factory production and processing technology of prefabricated components

4. 10. 1, technical content

The factory production and processing technology of prefabricated components refers to the technology of using automatic production line, unit assembly line and long-line pedestal production line to produce prefabricated components with standard shape, taking into account special-shaped prefabricated components, and using fixed formwork line to produce prefabricated components for construction, so as to meet the requirements of batch production and centralized supply of prefabricated components.

Factory production and processing technologies include factory planning and design of prefabricated components, production process design of various prefabricated components, mold scheme design and processing technology of prefabricated components, mechanized processing and molding technology of reinforced products, mechanized molding technology of prefabricated components, energy-saving maintenance technology of prefabricated components, and production quality control technology of prefabricated components.

The production technology of non-prestressed concrete precast members includes concrete technology, reinforcement technology, mould technology, reserved and embedded technology, pouring technology, member maintenance technology, hoisting, storage and transportation technology, etc. Representative members include truss reinforced precast slab, beam-column member and shear wall plate member. The production technology of prestressed concrete precast members also covers the production technology of pre-tensioned and post-tensioned bonded precast members. In addition, there are prestressed circular hole plates, double T plates, roof beams, roof trusses and roof panels. It is used in construction engineering, including prefabricated bridge components in municipal and highway fields, with emphasis on prestressed production technology and quality control technology.

4. 10.2, technical indicators

Scientific factory management and automatic intelligent production ensure and improve the quality; The machining accuracy of the external dimension of members can reach 2mm, the standard deviation of concrete strength is not more than 4.0MPa, the precision of reserved embedded dimension can reach 65438±0mm, and the control deviation of protective layer thickness is 3mm. By controlling the deviation between prestress and elongation, the bulging of prestressed members can meet the design requirements and be at the same level, and the bearing capacity of members can meet the design and specification requirements.

Geometric machining accuracy control of precast members, concrete strength control, precision of embedded parts, bearing capacity of members, thickness control of protective layer, prestress requirements of prestressed members, etc. It should still meet the requirements of design (including standard atlas) and related standards.

The efficiency index, cost index, energy consumption index, environmental index and safety index of prefabricated components production shall meet the relevant requirements.

4. 10.3, scope of application

It is suitable for all kinds of reinforced concrete and prestressed concrete precast members in building engineering.

4. 10.4, engineering case

Beijing Vanke Jinyu Tixiang precast wallboard and sandwich board, (Beijing) COFCO Vanke Changyang Peninsula precast wallboard, stairs, sandwich board and balcony board, Shenyang Huisheng affordable housing precast wallboard, sandwich board and stairs, National Stadium (Bird's Nest) grandstand board, National Tennis Center precast hanging board, Shenzhen Universiade Sports Center grandstand board, Hangzhou Olympic Sports Center sports swimming pool precast external wall board and floor, Jinan Vanke Jinyu International precast external wall board and sandwich board, (Changchun) Prefabricated wall panels and double T-beams in the parking building of FAW Technology Center, precast fair-faced concrete external wall panels in Wuhan Qintai Culture and Art Center, precast colored concrete external wall panels in Hebei Huailai Canaan Winery, precast columns, roof panels, crane beams, precast T-beams, box girders, precast segments of municipal roads, precast pipe corridors, etc. in a production base of a power supply bureau.

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