| ํส | _ถ |
| ๅ่ | Evaluation of Bridge Outflow due to Great Tsunami |
| ่ | |
| Mชา | AสดiใBHฦๅwj |
| Aผา1 | Kถซ๑iใBHฦๅwj |
| Aผา2 | ฒXุBถiๅ๚{RT^gj |
| Aผา3 | |
| Aผา4 | |
| Aผา5` | |
| L[[h | รgAดภฬฌธARอWAภlAtsunamiAbridge outflowAdrag coefficientAratio ภ |
| ช | 35 |
| | 2 |
| ๆชy[W | 841 |
| ๖y[W | 846 |
| Nx | 2013 |
| v| | Triggered tsunami from the Great East Japan Earthquake caused outflows of many bridges. ภ (ratio of girder resistance to tsunami impact) of 38 girders were evaluated. There is great difference between ภ of girders flowed and survived. From modifications using average drag coefficient, ภ have 20% increase. After revising, flowed bridges with ภ greater than 1.0 are located in smaller distance to coastal line inducing greater velocities and decrease of ภ. As representative, ภ of Koizumi Bridge was modified by velocity by numerical analysis and becomes sufficient to explain the outflow. |
| PDFt@Cผ | 035-01-2141.pdf |
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