Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Rehabilitation of Brazos River and Colorado River Pipeline Bridges
In 2006–07, Parsons was contracted by The Williams Companies, Inc. to perform in-depth inspections of two aerial crossings for a natural gas pipeline southwest of Houston, Texas, over the Colorado and Brazos rivers. Each crossing consists of a single cable-supported 30—inch diameter line, carrying a half-billion cubic feet per day. Originating in the Gulf of Mexico, the Williams' Transcontinental Gas Pipeline supplies gas to the northeast United States, including New York City. Inspection of these bridges in 2006–07 found extensive corrosion of the main load-carrying galvanized steel bridge rope cables in the area where they pass through the cast-steel saddles atop the towers. Advanced ferrous corrosion and multiple wire breaks were found to justify a significant load-carrying reduction of these main cables and associated reduction in factor of safety of these bridges. In order to ensure reliable service for an additional 50 years, several options were considered. Rehabilitation and main cable replacement was the selected, preferred alternative based on reliability, cost-effectiveness, safety during construction, and the ability to maintain the pipe in service during construction operations. This paper describes the inspection findings, structural analysis, rehabilitation design and detailing, load transfer methodology, and construction aspects of the project.
Rehabilitation of Brazos River and Colorado River Pipeline Bridges
In 2006–07, Parsons was contracted by The Williams Companies, Inc. to perform in-depth inspections of two aerial crossings for a natural gas pipeline southwest of Houston, Texas, over the Colorado and Brazos rivers. Each crossing consists of a single cable-supported 30—inch diameter line, carrying a half-billion cubic feet per day. Originating in the Gulf of Mexico, the Williams' Transcontinental Gas Pipeline supplies gas to the northeast United States, including New York City. Inspection of these bridges in 2006–07 found extensive corrosion of the main load-carrying galvanized steel bridge rope cables in the area where they pass through the cast-steel saddles atop the towers. Advanced ferrous corrosion and multiple wire breaks were found to justify a significant load-carrying reduction of these main cables and associated reduction in factor of safety of these bridges. In order to ensure reliable service for an additional 50 years, several options were considered. Rehabilitation and main cable replacement was the selected, preferred alternative based on reliability, cost-effectiveness, safety during construction, and the ability to maintain the pipe in service during construction operations. This paper describes the inspection findings, structural analysis, rehabilitation design and detailing, load transfer methodology, and construction aspects of the project.
Rehabilitation of Brazos River and Colorado River Pipeline Bridges
Bruschi, Maria Grazia (Autor:in) / Clenance, John C. (Autor:in) / Condell, Seth (Autor:in) / Schmid, John (Autor:in)
Pipelines Conference 2011 ; 2011 ; Seattle, Washington, United States
Pipelines 2011 ; 501-512
28.07.2011
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Maintenance , Bridges , Infrastructure , Rehabilitation , Texas , Colorado River , Colorado , Pipelines
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