Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Full scale testing of corrugated metal culvert pipe rehabilitated with shotcrete liner
This thesis focusses on the development of full-scale experimental program for testing rehabilitated metal culvert pipe assembled from corrugated steel plates and development of testing facility for testing rehabilitated structures until failure. The metal culvert pipe in arch geometry was rehabilitated using steel fiber reinforced shotcrete liner reinforced with pre-rolled reinforcement bars and studs. The condition of distressed field structures was simulated by inducing the crown defect along the longitudinal seams, where all the crown bolts were removed. The rehabilitated culvert pipe was buried in 0.6 m of shallow soil cover and was tested statically under simulated single wheel pair pad loading representing the geometry of CL-625 ONT dual tire truck footprint. The performance of the rehabilitated test culvert pipe was monitored during backfilling and during live load testing. Then, the rehabilitated test culvert pipe was loaded to its ultimate limit state until the failure of compacted granular fill surface at the top. Results showed that, the ultimate limit state was achieved at a load approximately eight times the service load. The conduit walls of shotcrete lined test culvert pipe exhibited relatively rigid behaviour with very low horizontal and vertical deflections at ultimate limit state. At the load equal to almost four times the service load, the rehabilitated culvert pipe showed tensile cracking at the crown location along the longitudinal seam where the crack propagated throughout the length of the pipe. No signs of circumferential cracking were observed in the test pipe at any load stage. Assessment of composite interaction behaviour of metal culvert pipe—rebar—shotcrete liner showed that no interaction was achieved at the crown location while full interaction was achieved at shoulder and spring lines. Rebar cage embedded in the shotcrete liner enhanced the flexural rigidity of the liner in addition to providing it with more ductility. ; May 2019
Full scale testing of corrugated metal culvert pipe rehabilitated with shotcrete liner
This thesis focusses on the development of full-scale experimental program for testing rehabilitated metal culvert pipe assembled from corrugated steel plates and development of testing facility for testing rehabilitated structures until failure. The metal culvert pipe in arch geometry was rehabilitated using steel fiber reinforced shotcrete liner reinforced with pre-rolled reinforcement bars and studs. The condition of distressed field structures was simulated by inducing the crown defect along the longitudinal seams, where all the crown bolts were removed. The rehabilitated culvert pipe was buried in 0.6 m of shallow soil cover and was tested statically under simulated single wheel pair pad loading representing the geometry of CL-625 ONT dual tire truck footprint. The performance of the rehabilitated test culvert pipe was monitored during backfilling and during live load testing. Then, the rehabilitated test culvert pipe was loaded to its ultimate limit state until the failure of compacted granular fill surface at the top. Results showed that, the ultimate limit state was achieved at a load approximately eight times the service load. The conduit walls of shotcrete lined test culvert pipe exhibited relatively rigid behaviour with very low horizontal and vertical deflections at ultimate limit state. At the load equal to almost four times the service load, the rehabilitated culvert pipe showed tensile cracking at the crown location along the longitudinal seam where the crack propagated throughout the length of the pipe. No signs of circumferential cracking were observed in the test pipe at any load stage. Assessment of composite interaction behaviour of metal culvert pipe—rebar—shotcrete liner showed that no interaction was achieved at the crown location while full interaction was achieved at shoulder and spring lines. Rebar cage embedded in the shotcrete liner enhanced the flexural rigidity of the liner in addition to providing it with more ductility. ; May 2019
Full scale testing of corrugated metal culvert pipe rehabilitated with shotcrete liner
06.02.2019
Hochschulschrift
Elektronische Ressource
Englisch
Full-Scale Field Test of Uplift Resistance of Corrugated Metal Pipe Culvert
| British Library Conference Proceedings | 1995
Full-Scale Field Test of Uplift Resistance of Corrugated Metal Pipe Culvert
| British Library Online Contents | 1995
Cracked culvert interlined with corrugated pipe
| Engineering Index Backfile | 1934