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Trenchless Rehabilitation Saves Grottoes, VA, Culverts-and Money-Without Disrupting Traffic

机译：无沟渠修复可节省石窟，弗吉尼亚州，涵洞和金钱，而不会中断交通

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Grottoes, Virginia discovered severe corrosion in portions of their stormwater system during a routine annual inspection in 2013. A large set of elliptical CMP culverts didn't pass inspection. The culverts were in poor condition with severe corrosion. Individual sections were failing and misaligned, and the town's consultants recommended replacement. Complicating the issue, the failing pipes were four parallel culverts which are all are quite large, 70" by 44", running directly underneath Dogwood Avenue, one of Grottoes' two main thoroughfares. The town obtained cost estimates for trench-and-replace from Brunk & Hylton Engineering, Inc. and, as expected, the price was high and the plan called for significant and lengthy traffic disruptions. Fortunately, Grottoes Town Manager Jeff Nicely had seen a trenchless rehabilitation process called CentriPipe that looked like it could be useful in this situation. In researching the solution, Nicely discovered the project cost was 15 percent less than the dig and replace estimate they had received, and had the added benefit of eliminating weeks of traffic disruptions. This paper will review the breadth of aging infrastructure situation that state and local agencies in the United States are facing, the engineering considerations in addressing failures, and the process, quality control measures, and results of the critical project in Grottoes, Virginia.
机译：在2013年的例行年度检查中，弗吉尼亚州的Grottoes发现其雨水系统的部分受到严重腐蚀。大量椭圆形CMP涵洞未通过检查。涵洞状况恶劣，严重腐蚀。个别区域出现故障且未对齐，该镇的顾问建议更换。使问题变得更加复杂的是，出现故障的管道是四个平行的涵洞，它们都是相当大的，长70英寸乘44英寸，直接在山洞伍德道（Dogwood Avenue）下方运行，这是洞穴的两个主要通道之一。该镇从Brunk＆Hylton Engineering，Inc.获得了挖沟和更换的费用估算，并且正如预期的那样，价格很高，该计划要求大量和长时间的交通中断。幸运的是，Grottoes镇经理杰夫·尼斯利（Jeff Nicely）看到了一种名为CentriPipe的非开挖修复过程，在这种情况下它看起来很有用。在研究解决方案时，Nicely发现项目成本比他们收到的挖掘和替换估算值低15％，并且具有消除数周交通中断的额外好处。本文将回顾美国各州和地方机构所面临的基础设施老化状况的广度，解决故障的工程考虑因素，过程，质量控制措施以及在弗吉尼亚州格罗托斯的关键项目的结果。

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