Prefabricated Assembly Method for House Foundations

The prefabricated assembly method for house foundations can refer to the installation approach of prefabricated concrete components in prefabricated construction, with core steps including component classification and installation sequence, assembly logic, and alternative new technologies, as detailed below:

I. Component Classification and Installation Sequence

The installation of prefabricated components requires a differentiated sequence based on their types to ensure structural stability and construction efficiency.

• Prefabricated Columns: Install in the order of corner columns, side columns, and central columns, using the axis and outer contour lines as control references. Among them, side and corner columns should be aligned with the outer contour lines to ensure consistency with the overall building positioning.
• Prefabricated Shear Wall Panels: Prioritize the hoisting of exterior walls and panels connected to the cast-in-place sections. Exterior wall installation employs dual control using both the axis and contour lines. When filling compartments, use bedding mortar, ensuring the thickness of the grouting material does not exceed 20mm to avoid uneven structural loading due to excessive mortar.
• Prefabricated Beams, Composite Slabs, and Composite Beams: Follow the principle of "main beams first, secondary beams later; low first, high later." When installing composite slabs, check the height difference and width of the slab bottom joints to ensure smooth splicing; temporary supports should not be removed until the strength of the post-poured concrete meets the design requirements to prevent structural deformation due to premature formwork removal.

II. Assembly Logic

Prefabricated components achieve modular combination through standardized interfaces, with a core logic similar to the interlocking pattern of "LEGO bricks". Specific methods include:

• Splicing: Achieve horizontal or vertical connections between components through pre-embedded reinforcement or bolts, such as the anchored connection between prefabricated columns and foundations.
• Overlapping: Utilize the overlapping sections of components to transfer loads, such as the overlapping of composite slabs and prefabricated beams, where the overlap length must be controlled to meet structural loading requirements.
• Interlocking: Insert reinforcement or steel sections into pre-reserved holes in components to enhance overall integrity, such as the interlocking connection between shear wall panels and coupling beams.

III. Alternative New Technologies

To address the low efficiency of traditional brick formwork construction, some projects adopt the following alternative technologies:

• Prefabricated Panel Formwork: Form the formwork by assembling factory-prefabricated concrete panels on-site, suitable for deep pile cap construction. This method reduces wet work volume and shortens the construction period.
• Prefabricated Lightweight Partition Panels: Use lightweight materials (such as aerated concrete) to prefabricate wall panels, which are then assembled on-site using clips or adhesives, suitable for projects with high efficiency requirements.

All the above methods must be adjusted according to design drawings and on-site conditions. Technical disclosures should be conducted before construction to ensure assembly accuracy and structural safety.