Performance of deteriorated corrugated steel culverts rehabilitated with sprayed-on cementitious liners subjected to surface loads |
| |
| Affiliation: | 1. Queen’s University, Department of Civil Engineering, Kingston, On K7L 3N6, Canada;2. Department of Civil Engineering, GeoEngineering Centre at Queen’s-Royal Military College, Queen’s University, Kingston, On K7L 3N6, Canada;1. University of Pittsburgh, Department of Civil and Environmental Engineering, Pittsburgh, PA, USA;2. Warren Environmental Inc., Carver, MA, USA;1. Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure, Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;3. Shanghai Shenjie Pipe Technology Co., Ltd., Shanghai 201700, China;4. Hunan Jindi Corrugated Steel Pipe Production Co., Ltd., Hunan 410114, China;1. School of Civil & Environmental Engineering, Cornell University, 319 Hollister Hall, Ithaca, NY, USA;2. Gek Terna Group of Companies, Athens, Greece;3. School of Civil & Environmental Engineering, Cornell University, 323 Hollister Hall, Ithaca, NY, USA;4. School of Civil & Environmental Engineering, Cornell University, 324 Hollister Hall, Ithaca, NY, USA;1. KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden;2. ViaCon AB, SE-531 02 Lidköping, Sweden;3. Skanska Sweden AB - Major Projects, SE-169 83 Solna, Sweden |
| |
| Abstract: | A variety of alternatives to rehabilitate culverts have been developed over the past decades given their advantages over conventional open-cut culvert replacement. However, the performance of many of these systems has not yet been examined through laboratory testing. The objective of the present paper is to examine the performance of deteriorated steel culverts rehabilitated with spray-on liners when subjected to surface loads. Two 1200 mm diameter corrugated steel pipelines with similar levels of deterioration in the invert-haunch area were buried to a depth of 1200 mm and tested under service load employing a load frame simulating a single axle of a Canadian design truck. The pipelines were then rehabilitated with spray on-cementitious liners (each with a different target thickness). Once rehabilitated, the pipelines were examined again under the service load employing the single axle load frame at 1200 mm of soil cover, and then tested employing a tandem axle load frame at 2100 and 1200 mm of soil cover. During all tests, changes in diameter, curvature and liner strains were monitored. The data obtained indicates that the flexible pipelines responded like semi-rigid structures after rehabilitation. It was also observed that the difference in liner thickness of 30% did influence the response of the pipelines, and that extreme fiber tensions during service loading were 7% and 13% of the tensile strength of the liner materials for the 76 mm and 51 mm liner thicknesses that were specified. |
| |
| Keywords: | Culvert Liner Rehabilitation Steel Pipe Trenchless |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
