Table 2 Characteristic loads and their locations of beam specimens.
MEM-1:5 | MEM-1:1 | MEM-1:0 | ||
|---|---|---|---|---|
Flexural cracking | Load percentage | 13% | 11% | 12% |
Load detail | P = 27.0, e = 0.166, T = 4.5, M = 22.5 | P = 11.5, e = 0.831, T = 9.6, M = 9.6 | P = 13.0, e = 1.33, T = 17.3, M = 0 | |
Location | Top of loaded web at support | Top of loaded web at support | Top of loaded web at support and top of unloaded web at mid-span | |
Diagonal cracking | Load percentage | 49% | 33% | 24% |
Load detail | P = 103.0, e = 0.166, T = 17.1, M = 85.5 | P = 36.6, e = 0.831, T = 30.4, M = 30.4 | P = 26.8, e = 1.33, T = 35.7, M = 0 | |
Location | External surface of loaded web at 3L/8-section | External surface of loaded web at 5L/16-section | External surfaces of both webs at L/4-section | |
Steel bar yielding | Load percentage | 57% | 58% | 60% |
Load detail | P = 119.3, e = 0.166, T = 19.8, M = 99.0 | P = 64.3, e = 0.831, T = 53.4, M = 53.4 | P = 66.3, e = 1.33, T = 88.2, M = 0 | |
Location | Top of loaded web at support | Top of loaded web at support | Top of loaded web at support and top of unloaded web at mid-span | |
Stirrup yielding | Load percentage | Not yield | Not yield | 86% |
Load detail | Not yield | Not yield | P = 95.1, e = 1.33, T = 126.4, M = 0 | |
Location | Not yield | Not yield | External legs of both webs at L/4-section | |
Ultimate state | Load detail | P = 209.6, e = 0.166, T = 34.8, M = 174.0 | P = 110.7, e = 0.831, T = 92.0, M = 92.0 | P = 110.5, e = 1.33, T = 147.0, M = 0 |
Location | Ductile flexural failure at both support and mid-span sections of loaded web | Ductile flexural failure at both support and mid-span sections of loaded web | Ductile flexural failure at both support and mid-span sections of two webs |