Table 1 The main research results on vibration comfort level
From: A theory of pedestrian-induced footbridge vibration comfortability based on sensitivity model
Research Results | Acceleration Index | Subjective Feelings |
|---|---|---|
Helberg and Sperling (1941) | 0.001(g) peak | Minimal feeling |
0.022(g) peak | Certain feeling | |
0.08(g) peak | Intolerable | |
Dieckmann (1955) | 0.003(g) peak | Feeling threshold |
0.03(g) peak | Feel reluctantly | |
0.3(g) peak | Not comfortable | |
Chang (1967) | < 0.05(m/s2) peak | Can not feel |
0.05–0.15(m/s2) peak | Can feel | |
0.15–0.5(m/s2) peak | Not comfortable | |
0.5–1.5(m/s2) peak | Very uncomfortable | |
> 1.5(m/s2) peak | Intolerable | |
Griffin (1991) | 0.3(m/s2) r.m.s | Can feel |
0.7(m/s2) r.m.s | Not uncomfortable | |
1.1(m/s2) r.m.s | A little uncomfortable | |
1.7(m/s2) r.m.s | Uncomfortable | |
2.5(m/s2) r.m.s | Very uncomfortable |