Prefabricated Modular House Installation

Prefabricated modular house installation involves transporting factory-prefabricated building components to the site and assembling them into a complete building through reliable connection methods. Its core lies in shifting traditional on-site operations to the factory, enhancing efficiency and quality through standardized production. The on-site installation process and component types are as follows:

I. Full Installation Process

1. Foundation Construction and Layout Positioning
   First, complete foundation treatment and foundation pouring, then perform precise layout according to the design drawings to determine the building axis, component positions, and elevations, providing a reference for subsequent installation.

2. Wall and Column Rebar Tying and Aluminum Formwork Enclosure
   Tie wall and column rebars at predetermined positions to ensure structural strength; simultaneously install aluminum alloy formwork (aluminum formwork) to create a closed space for concrete pouring. Aluminum formwork can be reused, improving construction efficiency.

3. Floor Slab Bottom Rebar Tying and Utility Pre-embedding
   Tie the bottom rebars on the floor slab formwork and reserve channels for utility pipelines. Simultaneously install support structures for prefabricated bay windows, balconies, and other components to ensure stability during subsequent lifting.

4. Component Lifting and Connection
   Use lifting equipment to transport prefabricated wall panels, floor slabs, bay windows, balconies, and other components to designated positions. Achieve reliable fixation between components through bolt connections, welding, or sleeve grouting to form an integral structure.

5. Concrete Pouring and Cast-in-Place Layer Construction
   Pour concrete at the connections between wall columns and floor slabs to enhance structural integrity; then perform precise leveling of the cast-in-place floor to ensure surface flatness meets decoration requirements.

II. Main Component Types and Characteristics

1. Panel-Based Prefabrication
   Uses prefabricated wall panels and floor slabs as core components, assembled on-site to form walls and floors. Suitable for multi-story residential and public buildings, it offers a short construction period and high standardization.

2. Box-Based Prefabrication
   Prefabricates functional units such as bathrooms and kitchens into independent 'boxes' for direct on-site assembly. Construction speed can be increased by 50%-70%, but it requires higher transportation and lifting equipment, making it suitable for modular buildings.

3. Frame-Based Prefabrication
   Uses prefabricated beams and columns to form a frame structure, then installs wall panels and floor slabs. It offers flexible spatial layouts, suitable for high-rise buildings or large-span spaces, but requires strict quality control at connection nodes.

III. Technical Advantages

Prefabricated modular houses reduce on-site wet operations through factory production, lowering dust and noise pollution. Components have high precision, reducing material waste. The construction period is shortened by 30%-50% compared to traditional methods, with stronger quality controllability, aligning with the trend of green building development.