From: Effect of Impact Load on Splice Length of Reinforcing Bars
Specimens | Drop height (m) | Drop weight (kg) | Impact energy (kJ) | Pp (kN) | δp (mm) | δr (mm) | εu (10−6 mm/mm) | εr (mm/mm) | Strain rate (1/s) |
---|---|---|---|---|---|---|---|---|---|
S-18-300-L | 3.15 | 272.3 | 8.41 | 3518 | 23.1 | 18.3 | 1280 | 450 | 2.91 |
6.30 | 272.3 | 16.83 | 4953 | 86.6 | 75.6 | 2140 | 1680 | 4.14 | |
12.60 | 272.3 | 33.66 | 8002 | 165.6 | 151.7 | 3070 | 1760 | 5.30 | |
5.74 | 597.3 | 33.65 | 6771 | 194.6 | 176.1 | 3100 | 1950 | 5.93 | |
S-18-400-L | 3.15 | 272.3 | 8.41 | 3622 | 12.8 | 5.8 | 1600 | 380 | 2.91 |
6.30 | 272.3 | 16.83 | 5380 | 60.5 | 50.6 | 2150 | 540 | 4.15 | |
12.60 | 272.3 | 33.66 | 8566 | 150.9 | 138.0 | 3140 | 1370 | 5.31 | |
5.74 | 597.3 | 33.65 | 7108 | 167.0 | 159.0 | 3360 | 1580 | 5.93 | |
S-18-300 | 1.58 | 532.3 | 8.22 | 2540 | 55.8 | 52.4 | 1610 | 320 | 3.19 |
3.15 | 532.3 | 16.45 | 4588 | 101.7 | 88.7 | 2160 | 1370 | 4.11 | |
4.73 | 532.3 | 24.67 | 5716 | 159.6 | 144.9 | 2570 | 840 | 4.97 | |
1.96 | 857.3 | 16.45 | 3590 | 137.7 | 135.2 | 2430 | 1380 | 4.16 | |
S-18-400 | 1.58 | 532.3 | 8.22 | 3123 | 38.9 | 34.7 | 2030 | 340 | 3.16 |
3.15 | 532.3 | 16.45 | 4589 | 83.2 | 77.8 | 2210 | 680 | 4.09 | |
6.30 | 532.3 | 32.90 | 6768 | 183.2 | 167.0 | 3430 | 1130 | 5.61 | |
1.96 | 857.3 | 16.45 | 3541 | 104.0 | 100.0 | 2540 | 1050 | 4.14 | |
S-25-300 | 1.58 | 532.3 | 8.22 | 3140 | 32.4 | 30.2 | 1690 | 240 | 2.80 |
3.15 | 532.3 | 16.45 | 4500 | 95.2 | 89.8 | 2170 | 1360 | 3.53 | |
4.73 | 532.3 | 24.67 | 5484 | 134.8 | 118.1 | 3320 | 780 | 4.26 | |
1.96 | 857.3 | 16.45 | – | – | – | – | – | – | |
S-25-400 | 1.58 | 532.3 | 8.22 | 2685 | 23.5 | 15.1 | 2070 | 320 | 2.75 |
3.15 | 532.3 | 16.45 | 4500 | 75.0 | 72.3 | 2290 | 8970 | 3.49 | |
6.30 | 532.3 | 32.90 | 6768 | 193.8 | 185.2 | 3470 | 1520 | 4.70 | |
1.96 | 857.3 | 16.45 | 4410 | 122.8 | 118.4 | 2580 | 320 | 3.52 |