by In modern construction, the application of prefabricated engineering is becoming increasingly widespread. It not only improves construction efficiency, but also ensures building quality and safety. This article will provide you with a detailed introduction to the refined construction process and key quality control points of prefabricated engineering, helping you better understand and master this advanced technology..
Through rigorous deepening design and precise construction verification, we aim to improve the detailed drawings of prefabricated component production and assembly construction, with the aim of eliminating adverse phenomena such as mismatches, omissions, collisions, or missing components during the production and installation stages. For reserved holes and embedded parts, strict verification should be carried out before processing to avoid unnecessary chiseling adjustments on site..
Prefabricated components include various types such as exterior wall panels, bay windows, balconies, stairs, air conditioning panels, laminated panels, and laminated beams and columns. Among them, PC exterior wall panels, as non load-bearing structural components, are like gorgeous “coats” attached to the main structure, using side connections to flexibly connect with the main structure, showcasing their unique structural aesthetics..
To ensure the safety and stability of the components during transportation, special fixed brackets are specially configured. A full-length pad is laid at the bottom of each laminated board, adjacent to the lifting ring in the longitudinal direction. The top and bottom are aligned, accurately positioned, and stably supported, and the number of stacking layers is limited. For example, if the laminated board does not exceed 5 layers and the prefabricated building ladder does not exceed 2 layers, the bottom of the component is padded 100mm away from the vehicle body with wooden blocks to prevent ground damage..
After the components arrive at the site, a comprehensive acceptance of appearance quality, geometric dimensions, embedded parts, reserved holes, etc. shall be carried out one by one. Any unqualified components shall be returned; And verify the identification of prefabricated components, including key information such as the stacking plate number, simplified lifting number, and installation direction..
Based on the construction site layout planning, a dedicated storage area for prefabricated components is designated, and the site is leveled and hardened, with warning signs set up and standardized management implemented. Classify and stack components according to their models and specifications, and set two full-length wooden pads under each board, tightly adhering to the longitudinal lifting ring position of the stacked board to ensure straightness and neatness. It is prohibited to mix and stack boards of different specifications, and the stacking height should not exceed 5 layers; The bottom of the component is also raised 100mm above the ground using wooden blocks; When the prefabricated staircase is placed, its stress point should be consistent with the lifting point position of the lifting beam..
Firstly, carry out elevation re measurement and positioning line marking, and then accurately hoist the prefabricated components to the predetermined position for fine correction and reinforcement..
After confirming that the prefabricated components are hoisted up to the standard and that the slant support, foot code, component connectors, etc. are stable, the subsequent reinforcement binding and formwork sealing processes shall be rapidly promoted, the concrete pouring of walls and floors shall be completed as early as possible according to the construction plan, a solid overall structure shall be built, and the specific installation time of each component shall be recorded..
Before the production of prefabricated components, a comprehensive review of the joint connection performance should be conducted, including detailed verification of appearance quality, dimensional deviation, factory material report, and joint type inspection report. Reinforcement sleeve grouting connection joint specimens should be made according to requirements for verification testing;.
Thoroughly inspect the installation of various embedded components in prestressed reinforcement and concealed engineering;.
In the construction of prefabricated structures, the installation sequence, precise positioning, and temporary fixing measures of prefabricated components are crucial, and the design scheme must be strictly followed;.
Post poured concrete nodes are the core to ensure the load-bearing capacity of prefabricated structures.
