Research Article
Performance Analysis of Prefabricated Steel-Spring Floating-Slab Track and Its Application to Urban Express Rail Transit
Table 10
Vertical-vibration index of the floating slab.
| | Calculation working condition | Vertical displacement at the central part of the floating slab | RMS of vertical vibration acceleration in the middle of the floating slab | | L = 3.6 m | L = 4.8 m | L = 3.6 m | L = 4.8 m | | 350 | 450 | 550 | 350 | 450 | 550 | 350 | 450 | 550 | 350 | 450 | 550 |
| | Straight line-140 | 3.863 | 3.797 | 3.757 | 3.095 | 3.090 | 3.233 | 1.032 | 1.334 | 0.914 | 0.968 | 0.953 | 1.073 | | Straight line-160 | 3.832 | 3.765 | 3.760 | 3.192 | 3.217 | 3.189 | 1.311 | 1.139 | 1.551 | 1.147 | 1.249 | 1.084 | | Straight line-200 | 3.797 | 3.881 | 3.861 | 3.121 | 3.127 | 3.123 | 1.366 | 1.556 | 1.318 | 1.238 | 1.513 | 1.235 | | Curve-140 | 3.732 | 3.675 | 3.714 | 3.321 | 3.051 | 3.459 | 1.219 | 1.390 | 1.319 | 1.125 | 1.226 | 1.513 | | Curve-160 | 3.750 | 3.734 | 3.752 | 3.368 | 3.215 | 3.383 | 1.146 | 1.444 | 1.164 | 1.284 | 1.494 | 1.171 | | Maximum per 100 mm range of change (%) | 2.2 | 13.4 | 36.2 | 23.3 |
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L: length; RMS: root mean square.
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