Research Article
Research on In Situ Stress Measurements in Reinforced Concrete Beams Based on the Core-Drilling Method
Table 1
Stress data from boreholes of various diameters.
| Depth (mm) | 100 mm diameter front borehole stress (MPa) | 75 mm diameter front borehole stress (MPa) | 50 mm diameter front borehole stress (MPa) | 50 mm diameter side borehole stress (MPa) |
| 0 | −2.37 | −2.35 | −2.25 | −1.32 | 5 | −2.28 | −2.25 | −1.98 | −0.85 | 10 | −2 | −1.63 | −1.01 | −0.35 | 15 | −1.55 | −1.02 | −0.24 | −0.01 | 20 | −1.05 | −0.44 | 0.18 | 0.09 | 25 | −0.63 | −0.07 | 0.27 | 0.12 | 30 | −0.29 | 0.13 | 0.22 | 0.07 | 35 | −0.01 | 0.22 | 0.17 | 0.06 | 40 | 0.1 | 0.24 | 0.13 | 0.04 | 45 | 0.18 | 0.22 | 0.08 | 0.03 | 50 | 0.23 | 0.17 | 0.04 | 0 | 55 | 0.25 | 0.15 | 0 | 0 | 60 | 0.23 | 0.12 | 0 | 0 | 65 | 0.21 | 0.12 | 0 | 0 | 70 | 0.18 | 0.06 | 0 | 0 |
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