Fig. 1. Detailed view of precast arch members
Fig. 2. A precast arch structure used for this study
Fig. 3. Standard cross section of the precast arch structure used for this study
Fig. 4. Backfill compaction zones surrounding the precast concrete arch structure
Fig. 5. Longitudinal diagram of the precast arch structure
Fig. 6. Installed location of strain gauges in steel bars for the left arch
Fig. 7. Location and view of targets for displacement measurements
Fig. 8. Results of vertical displacement measurements
Fig. 9. Comparison of vertical displacements obtained from field measurements and numerical analyses
Fig. 10. Results of horizontal displacement measurements
Fig. 11. Comparison of horizontal displacements obtained from field measurements and numerical analyses
Fig. 12. Comparison of deformed shape obtained from numerical analyses with field measurements
Fig. 13. Comparison of calculated lateral earth pressure changes using two methods
Fig. 14. Displacement diagrams of the precast concrete arch structure using numerical analyses
Fig. 15. Changes of coefficients of earth pressure in points D and H
Fig. 16. Stress distributions around a precast arch structure after completion of construction
Table 1. Strength parameters used for the numerical analysis
Table 2. Numerical analyses procedures according to construction stages
Table 3. Comparison of displacements obtained from field measurements and numerical analyses (unit: mm)
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