Research Article
Green and Energy-Saving Ecological Reconstruction Design of Existing Buildings in Cities in Severe Cold Areas
Table 1
Performance evaluation index system of beam-column joints of existing buildings in cities in severe cold areas.
| | Limit strain index layer (weight of comprehensive thermal insulation capacity) | Level 3 indicators (weight of level 2 indicators) |
| | Ultimate strain capacity (042) | Bearing capacity of steel structure (0.345) | | Bearing capacity at the limit point (0.4121) | | Linear arrangement (0.321 | | Building regularity (0.126) | | Integral shell structure (0.348) |
| | Building materials (0.26) | Concrete (0.35) | | Constitutive model of prestressed reinforcement (0.123) | | Monotonic loading (0.343) |
| | Proportional stress capacity requirement (0.32) | Peak load (0.55) | | Reverse reload depth (0.234) |
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