Table 2 Stress distribution in anchoring area (MPa).
Component | Stress results | Most unfavorable loading position | ||||
|---|---|---|---|---|---|---|
Max principal | Min principal | Vertical normal stress | Von mises | |||
1# | Steel shell structure | 1.66 ~ 3.60 | − 15.79 ~ 0.76 | − 16.47 ~ − 0.34 | 16.27 | Straight segment web |
High-strength grout | − 1.01 ~ 2.64 | − 7.76 ~ 0.13 | − 8.43 ~ − 0.02 | 6.75 | Lower edge of the topmost strand-pipe hole row | |
4# | Steel shell structure | − 0.40 ~ 4.86 | − 10.72 ~ 0.22 | − 10.34 ~ 0.12 | 10.45 | Straight segment web |
High-strength grout | − 0.89 ~ 2.56 | − 6.23 ~ 0.24 | − 6.13 ~ 0.64 | 5.32 | Junction between the straight segment and the curved segment | |
7# | Steel shell structure | − 0.22 ~ 3.98 | − 6.53 ~ 0.30 | − 6.01 ~ − 0.52 | 6.36 | Straight segment web |
High-strength grout | − 0.90 ~ 4.09 | − 4.97 ~ 0.36 | − 4.88 ~ − 2.28 | 5.26 | Between the topmost strand-pipes in the curved segment | |
8# | Steel shell structure | − 1.29 ~ 2.88 | − 5.81 ~ 0.26 | − 4.86 ~ 1.09 | 6.36 | Web at the junction of the straight and curved segments |
High-strength grout | − 1.04 ~ 3.84 | − 4.97 ~ 0.44 | − 4.92 ~ 3.26 | 5.45 | wall of the second row of strand-pipe holes at the junction of the straight and curved segments | |
9# | Steel shell structure | − 0.52 ~ 4.63 | − 3.82 ~ 0.05 | − 2.76 ~ 2.09 | 5.79 | Middle of the top slab in the curved segment |
High-strength grout | − 1.20 ~ 5.04 | − 4.94 ~ 0.63 | − 4.83 ~ 4.94 | 5.00 | Between the second row of strand holes at the middle of the arc segment | |
Anchorage zone concrete | − 3.72 ~ 1.76 | − 5.089 ~ − 0.01 | − 4.91 ~ 1.03 | 4.56 | Fork of the bridge tower | |
