How Do Large-Area GRC Curtain Walls Solve Thermal Stress Problems? Qinglong GRC Thermal Stress Control Technology

Large-area GRC curtain walls address thermal stress issues through measures such as setting expansion joints, using flexible connections, and controlling panel size. Expansion joints are spaced at ≤12m with a joint width of ≥20mm; the connection system allows ±10mm thermal deformation; single panel area is controlled at ≤10m². These measures effectively release thermal stress and prevent cracking.

In specific designs, Qinglong GRC calculates thermal stress through finite element analysis to optimize joint placement; uses elongated-hole connections that allow horizontal movement; and installs sliding bearings to accommodate inter-story drift. In a large commercial complex project, with this design, the curtain wall withstood temperature variations from -20°C to 60°C, with no cracks after 3 years of use.

Principles for Expansion Joint Placement

Spacing ≤12m, joint width ≥20mm; joints aligned with structural joints; these principles effectively divide the facade.

Flexible Connection System Design

Elongated holes allow ±10mm horizontal movement; elastic pads are installed to absorb deformation; these designs accommodate movement.

Panel Size Control Requirements

Single panel area ≤10m², long side ≤4m; these controls reduce thermal stress.

Material Selection Considerations

Select materials with low thermal expansion coefficients; control moisture content; these considerations reduce deformation.

Thermal stress requires systematic control. Qinglong GRC's proven technology solves thermal issues.