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STAYING ADAPTABLE: How versatility is the key to restoring tunnels
| 题名： | STAYING ADAPTABLE: How versatility is the key to restoring tunnels |
| 正文语种： | eng |
| 作者： | Stephen Sistrunk |
| 摘要： | As these important tunnels age, asset owners must find creative, efficient solutions for repair and maintenance. Unlike the horizontal surface of a bridge, a tunnel typically has a 360 degree surface of concrete that must be regularly monitored and restored if the structure is to last. The only alternative - tear down and rebuild - would be extremely expensive and environmentally damaging, if not impossible in many cases. In Portland, Oregon, the Portland Board of Transportation (PBOT) is putting the finishing touches on a project to restore the concrete ceiling and vertical walls of the Northwest Cornell Road Tunnel. With the repaired surface covering a total area of approximately 28,800 sq ft, this project illustrates how innovative equipment can be combined with adaptive project execution to maintain the world's tunnel assets. |
| 出版年： | 2022 |
| 期刊名称： | Roads & bridges |
| 卷： | 60 |
| 期： | 7 |
| 页码： | 34,36,38-40 |
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