1. Material Selection and Structural Design for Construction Of Color Steel Tile Shelters
Material Specifications:
For structural frameworks exceeding 10-meter spans, H-beams combined with I-beams are structurally mandated due to superior load-bearing capacity. Smaller spans permit the use of circular or square hollow sections (CHS/SHS). Standard light-gauge steel framing constitutes the conventional skeleton, requiring welded connections. Color steel sandwich panels, priced between 40-100 RMB/m², are selected based on thermal insulation requirements and budget constraints.
Slope Geometry and Structural Configuration:
A roof slope of 10%-15% is standard practice to ensure effective drainage and structural integrity. For instance, a 10-meter span necessitates a minimum rise of 1.5 meters. Curved roof profiles demand pre-cambered steel beams fabricated to precise radii. Gable roof structures require rigorous calculation of ridge height-to-span ratios to maintain geometric stability and load distribution.
2. Foundation Construction of Construction Of Color Steel Tile Shelters
Subgrade Preparation and Footings:
The construction site must undergo comprehensive leveling and mechanical compaction to achieve ≥95% Proctor density. Permanent foundations utilize a 150mm thick C20 grade (characteristic compressive strength = 20 N/mm²) reinforced concrete footing slab. Temporary structures may employ ground anchors, provided pull-out resistance meets design wind loads.
Sill Plates and Angle Iron Installation:
Continuous galvanized angle iron or channel sections form the perimeter sill plate. These elements are secured using Φ6-Φ8 expansion anchors at 600-800mm centers, ensuring a maximum levelness tolerance of ±2mm across any 3-meter segment to prevent distortion.
3. Primary Framework Assembly for Construction Of Color Steel Tile Shelters
Column and Beam Erection:
Vertical columns must exhibit plumbness deviations ≤3mm per meter height, verified using optical or laser levels. Horizontal beams require analogous levelness verification. For arched structures, pre-assembled jigs are essential for accurate positioning of curved members. Longitudinal arch support spacing shall not exceed 2.0 meters.
Structural Bracing Systems:
Four principal bracing methodologies are prescribed.
Cross-Bracing (X/A-Type):
Diagonal tension rods forming X or A configurations significantly enhance in-plane rigidity.
Grid Bracing:
A network of horizontal and diagonal members provides comprehensive resistance to lateral torsional buckling, critical in high-wind zones.
Vertical Bracing:
Requires supplemental horizontal struts to prevent sway mechanisms.
Portal Frame Bracing:
Optimal for architecturally complex curved or vaulted profiles.
4. Color Steel Panel Installation about Construction Of Color Steel Tile Shelters
Panel Fastening Protocol:
Panel longitudinal overlaps must be ≥100mm. Fixation employs self-drilling screws with EPDM washers, spaced ≤300mm along purlins and ≤300mm transversely at overlaps. Ridge caps necessitate an additional waterproofing membrane sealed with neutral-cure silicone. For tensioned membrane covers, 8-gauge galvanized steel wires or specialized tensioning cables anchor securely to ground anchors.
Detailing and Service Integration:
All panel transverse joints require continuous application of butyl-based sealant. Electrical conduits traversing structural members must be routed within pre-installed protective sleeves; exposed wiring is strictly prohibited.
5. Welding Quality Assurance of Construction Of Color Steel Tile Shelters
Pre-Weld Preparation:
Joint surfaces require abrasive cleaning to remove mill scale, oil, grease, and rust. Electrodes must undergo controlled drying per manufacturer specifications (typically 250-350°C for 1-2 hours). Single-sided welding achieving full penetration with back formation is mandated for critical structural connections.
Welding Execution and Post-Processing:
Preheating (100-150°C) is obligatory for thick sections (>12mm) or low ambient temperatures (<5°C) to mitigate hydrogen-induced cracking. Optimal welding currents prevent lack of fusion defects. Electrode manipulation ensures adequate slag control and weld pool coverage. Post-weld heat treatment (PWHT) or controlled cooling enhances grain structure and residual stress reduction in high-stress connections.
6. Inspection, Testing, and Maintenance about Construction Of Color Steel Tile Shelters
Performance Validation:
Water Penetration Test: Simulated rainfall equivalent to 50mm/h applied for 30 minutes verifies watertight integrity.
Wind Load Simulation: Static or dynamic testing to equivalent wind pressures of ≥0.5 kN/m² (approx. 12m/s) confirms structural adequacy.
Operational Maintenance:
Biannual inspections assess anchor integrity, bracing tension, and weld condition. Post-severe wind events (>17.2m/s), immediate structural assessment and reinforcement of compromised elements are compulsory.
Critical Implementation Considerations:
Wind Engineering:
Regions with basic wind speeds >25m/s necessitate supplemental diagonal bracing or deep-foundation anchor systems (embedment depth ≥1.5m).
Safety Compliance:
Elevated work platforms mandate dual-lanyard fall arrest systems (EN 361) and perimeter safety nets (EN 1263-1). Work cessation is mandatory at wind speeds exceeding 45 km/h (Beaufort 6).
Resource Optimization:
Material take-offs must utilize 3D modeling or precise manual quantification to minimize cutting waste and procurement overages.
Conclusion
Rigorous adherence to these material, design, fabrication, and verification protocols ensures the construction of color steel tile shelters possessing demonstrable structural reliability, weather resistance, and extended service life, fulfilling both functional requirements and safety regulations.
