Prefabricated House Construction Paper
Research on prefabricated house construction focuses on structural innovation, industrialized production, construction process optimization, and connection joint inspection, aiming to improve construction efficiency, ensure building quality, and reduce costs.
Structural Innovation and Industrialized Production Model
Prefabricated modular buildings decompose structural systems into standardized modules, completing at least 60% of manufacturing processes in factories to achieve industrialized building production. The core advantage lies in transferring traditional on-site operations to controlled factory environments, addressing module interface design challenges through specialized production lines (e.g., wall prefabrication accuracy controlled within ±1mm) and 3D BIM technology for virtual pre-assembly of module interfaces. This model not only shortens construction periods (typical project durations reduced by 40%-60%) but also offsets higher initial investments through whole-life cycle cost optimization (over 30% lower than traditional buildings), with design service lives exceeding 50 years to meet permanent building standards.
Construction Process Optimization and Quality Control
Composite slabs serve as critical components in modular buildings, with their installation quality directly affecting overall project stability. Research focuses on pre-installation planning (e.g., component stacking sequences, support system design) and construction techniques (e.g., mortar bedding methods, formwork reinforcement technologies), minimizing human errors through standardized operating procedures. For instance, roughness treatment at the interface between composite slabs and cast-in-place layers significantly enhances bond performance, while verticality deviations of prefabricated components must be controlled within 3mm to ensure structural safety.
Connection Joint Inspection and Safety Assurance
Grouted sleeve connections represent the primary method for modular structural joints, with their quality directly impacting building safety. Research reveals correlations between grout saturation in sleeves and mechanical properties: when saturation falls below 80%, steel bar pullout failures become likely; effective anchorage lengths determine failure modes (e.g., sleeve rupture or steel bar yielding). Non-destructive testing technologies (e.g., X-ray imaging, ultrasonic testing) can identify internal defects (e.g., insufficient grout compaction, steel bar misalignment), with pull-out tests verifying connection reliability to provide scientific bases for project acceptance.
Prefabricated house construction technology forms a full-chain optimization system from design to operation and maintenance through modular design, industrialized production, refined construction, and intelligent inspection, offering efficient, safe, and economical solutions for the modern construction industry.
