Table 4 Optimization effect analysis.
Different scenarios | Layers | Cast-in-place building | Prefabricated Building | |||
|---|---|---|---|---|---|---|
Fully cast-in-place scenario | Baseline scenario | Cost-conscious | Duration-conscious | Carbon emissions-conscious | ||
Target weights | - | - | C:T:E = 1:1:1 | C:T:E = 4:1:1 | C:T:E = 1:4:1 | C:T:E = 1:1:4 |
Precast rate (%) | - | 0 | 25.259 | 27.728 | 32.14 | 30.49 |
Columns | First layer | Cast-in-place | Prefabrication | Cast-in-place | Cast-in-place | Prefabrication |
Second layer | Cast-in-place | Cast-in-place | Cast-in-place | Cast-in-place | Cast-in-place | |
Third layer | Cast-in-place | Cast-in-place | Cast-in-place | Cast-in-place | Cast-in-place | |
beams | First layer | Cast-in-place | Cast-in-place | Prefabrication | Prefabrication | Prefabrication |
Second layer | Cast-in-place | Prefabrication | Prefabrication | Prefabrication | Prefabrication | |
Third layer | Cast-in-place | Cast-in-place | Cast-in-place | Cast-in-place | Cast-in-place | |
Boards | First layer | Cast-in-place | Prefabrication | Prefabrication | Prefabrication | Prefabrication |
Second layer | Cast-in-place | Prefabrication | Prefabrication | Prefabrication | Prefabrication | |
Third layer | Cast-in-place | Cast-in-place | Cast-in-place | Prefabrication | Cast-in-place | |
Walls | First layer | Cast-in-place | Prefabrication | Prefabrication | Prefabrication | Prefabrication |
Second layer | Cast-in-place | Cast-in-place | Cast-in-place | Cast-in-place | Cast-in-place | |
Third layer | Cast-in-place | Cast-in-place | Cast-in-place | Cast-in-place | Cast-in-place | |
Stairs | First layer | Cast-in-place | Prefabrication | Prefabrication | Prefabrication | Prefabrication |
Second layer | Cast-in-place | Cast-in-place | Prefabrication | Prefabrication | Prefabrication | |
Cost (yuan) × 105 | - | 7.14 | 7.11 | 7.05 | 7.12 | 7.09 |
Construction duration (days) | - | 147 | 119 | 113 | 106 | 109 |
Carbon Emissions(t) | - | 304 | 263 | 260 | 252 | 248 |
