Open Access
Table 3
Frequency of deformation monitoring
| Monitoring project | New railroad construction phase | Monitoring frequency |
|---|---|---|
| Vertical and horizontal displacement of subgrade; vertical and horizontal displacement of catenary columns (inclination); vertical and horizontal displacement of track | Before construction begins | Measure the initial value, and take the average value for not less than 10 consecutive times within 3 days |
| During construction | 4 times per day | |
| Within one month of completion | 1 time per two days | |
| One month after completion | Determine whether to continue observation according to whether the criteria for stopping measurement have been met |
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