GB 50189-2015 第3.3.8条
| **** | **Ground thermal resistance**: In severe cold and cold regions, the thermal resistance R of the ground around the building perimeter (within 2 m of the inner surface of the exterior wall) shall be ≥1.5 (m²·K)/W; the R of non-perimeter ground shall be ≥1.0 (m²·K)/W. |