Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Structural Identification and Monitoring for the Skyway Span of the San Francisco-Oakland Bay Bridge
https://orcid.org/http://orcid.org/0000-0003-4558-7119
Realistic structural performance evaluation and design verification of long-span bridges require accurate and reliable quantification and characterization of actual loads (e.g., seismic, wind, traffic, temperature, etc.). Long-span cable-supported bridges are wind, and seismic-sensitive structures as their static and dynamic structural responses are particularly susceptible to wind and earthquake intensity. The new East Span of the San Francisco-Oakland Bay Bridge SFOBB comprises four key elements: the distinctive 385 m single-tower, unique self-anchored suspension span; the 1.6-mile dual box girder skyway; the 467 m Yerba Buena Island transition structures; and the 406 m Oakland touchdown approach. The SFOBB monitoring system consisted of six ultrasonic anemometers and twenty triaxial force-balance accelerometers. The anemometers were installed on the upwind and downwind sides of the bridge deck at a height of 4 m above the deck surface to measure wind speed, direction, elevation angle, and temperature. The triaxial accelerometers were installed along the outer edges of the westbound and eastbound orthotropic box girders to measure the longitudinal, lateral, and vertical accelerations of the self-anchored suspension span bridge. In this study, full-scale measurements vibration response of the unique self-anchored suspension span (SAS) of the San Francisco - Oakland Bay Bridge (SFOBB) were used to estimate the dynamic response as well as to verify the design assumptions for the unique self-anchored suspension span. Furthermore, the acquired data was deployed to develop a reduced-order representation for change detection and behavior prediction under extreme events such as earthquakes and strong winds.
Structural Identification and Monitoring for the Skyway Span of the San Francisco-Oakland Bay Bridge
https://orcid.org/http://orcid.org/0000-0003-4558-7119
Realistic structural performance evaluation and design verification of long-span bridges require accurate and reliable quantification and characterization of actual loads (e.g., seismic, wind, traffic, temperature, etc.). Long-span cable-supported bridges are wind, and seismic-sensitive structures as their static and dynamic structural responses are particularly susceptible to wind and earthquake intensity. The new East Span of the San Francisco-Oakland Bay Bridge SFOBB comprises four key elements: the distinctive 385 m single-tower, unique self-anchored suspension span; the 1.6-mile dual box girder skyway; the 467 m Yerba Buena Island transition structures; and the 406 m Oakland touchdown approach. The SFOBB monitoring system consisted of six ultrasonic anemometers and twenty triaxial force-balance accelerometers. The anemometers were installed on the upwind and downwind sides of the bridge deck at a height of 4 m above the deck surface to measure wind speed, direction, elevation angle, and temperature. The triaxial accelerometers were installed along the outer edges of the westbound and eastbound orthotropic box girders to measure the longitudinal, lateral, and vertical accelerations of the self-anchored suspension span bridge. In this study, full-scale measurements vibration response of the unique self-anchored suspension span (SAS) of the San Francisco - Oakland Bay Bridge (SFOBB) were used to estimate the dynamic response as well as to verify the design assumptions for the unique self-anchored suspension span. Furthermore, the acquired data was deployed to develop a reduced-order representation for change detection and behavior prediction under extreme events such as earthquakes and strong winds.
Structural Identification and Monitoring for the Skyway Span of the San Francisco-Oakland Bay Bridge
https://orcid.org/http://orcid.org/0000-0003-4558-7119
Realistic structural performance evaluation and design verification of long-span bridges require accurate and reliable quantification and characterization of actual loads (e.g., seismic, wind, traffic, temperature, etc.). Long-span cable-supported bridges are wind, and seismic-sensitive structures as their static and dynamic structural responses are particularly susceptible to wind and earthquake intensity. The new East Span of the San Francisco-Oakland Bay Bridge SFOBB comprises four key elements: the distinctive 385 m single-tower, unique self-anchored suspension span; the 1.6-mile dual box girder skyway; the 467 m Yerba Buena Island transition structures; and the 406 m Oakland touchdown approach. The SFOBB monitoring system consisted of six ultrasonic anemometers and twenty triaxial force-balance accelerometers. The anemometers were installed on the upwind and downwind sides of the bridge deck at a height of 4 m above the deck surface to measure wind speed, direction, elevation angle, and temperature. The triaxial accelerometers were installed along the outer edges of the westbound and eastbound orthotropic box girders to measure the longitudinal, lateral, and vertical accelerations of the self-anchored suspension span bridge. In this study, full-scale measurements vibration response of the unique self-anchored suspension span (SAS) of the San Francisco - Oakland Bay Bridge (SFOBB) were used to estimate the dynamic response as well as to verify the design assumptions for the unique self-anchored suspension span. Furthermore, the acquired data was deployed to develop a reduced-order representation for change detection and behavior prediction under extreme events such as earthquakes and strong winds.
Structural Identification and Monitoring for the Skyway Span of the San Francisco-Oakland Bay Bridge
Lecture Notes in Civil Engineering
Abdullah, Waleed (Herausgeber:in) / Chaudhary, Muhammad Tariq (Herausgeber:in) / Kamal, Hasan (Herausgeber:in) / Parol, Jafarali (Herausgeber:in) / Almutairi, Abdullah (Herausgeber:in) / Abdelbarr, Mohamed H. (Autor:in) / Wahbeh, Mazen (Autor:in) / Masri, Sami F. (Autor:in)
International Workshop on Civil Structural Health Monitoring ; 2024 ; Kuwait City, Kuwait
01.07.2024
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Seismic Design of the Skyway Section of the New San Francisco-Oakland Bay Bridge
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| British Library Conference Proceedings | 2002
San Francisco-Oakland Bay Bridge, East Span Seismic Safety
| Online Contents | 2003
San Francisco-Oakland Bay Bridge, East Span Seismic Safety Project
| British Library Conference Proceedings | 1999