Design Review (Bridges)
In the field of prestressed concrete (PC) bridges, Dr. Rosignoli has performed independent design reviews of 2 incrementally launched bridges, 4 cast-in-place balanced cantilever bridges, 2 precast segmental balanced cantilever bridges, and 9 families of simply-supported precast segmental spans. In the field of steel-composite bridges, he has led the independent design review of an 850m cable-stayed bridge with four planes of stay cables. He also performed a great number of partial reviews on the work performed by other design teams within large-scale bridge design assignments for design-bid-build (DBB) and design-build (D/B) projects.
- HNTB (2009-2010). Port Mann Bridge, Vancouver BC, Canada. Owner: Ministry of Transportation of British Columbia. Procurement method: D/B. The 850m cable-stayed span over the Fraser River features 4 planes of stay-cables and two adjacent 34m-wide steel-composite decks connected by pinned struts. The precast segmental approaches include 18 balanced cantilever spans and 42 simple spans. As the lead design reviewer, Dr. Rosignoli performed nonlinear time-history dynamic analyses of main span, approaches and earthquake-induced soil liquefaction and lateral spreading; as well as dynamic analysis of the wind loads from wind-tunnel testing. He also performed time-dependent staged-construction analysis of main span and approaches and solid finite-element analyses of stay-cable anchor boxes, structural nodes of the steel-composite deck grillage, and the entire pylon head.
- Egnatia Odos (2003-2006). Arachthos Bridge, Ioannina, Greece. Owner: Egnatia Odos. Procurement method: DBB. This project includes two adjacent 1036m PC bridges featuring six 143m balanced cantilever spans, two 91m end spans, and 80m piers erected within the 56m-deep Stenos Dam reservoir. As engineer-of-record, Dr. Rosignoli performed a full independent design review according to DIN Norms and Greek Standards. Design validation required site-specific seismic-hazard assessment, nonlinear time-history dynamic analysis of transverse deck pounding with multiple seismic I/D systems, dynamic analysis of the bridge response to earthquake-induced seiches in the Stenos Dam reservoir and tsunami-like effects at the basin boundaries, analysis of the time-dependent stress redistribution of staged construction, checking of drawings and bar-bending schedules, constructability reviews and technical assistance.
- Egnatia Odos (2001-2003). Nestos Bridge, Xanthi, Greece. Owner: Egnatia Odos. Procurement method: DBB. Two adjacent 930m PC bridges include 205 and 475m approaches built by incremental launching from the opposite abutments, and a central balanced cantilever span cast in-place with form travelers. As engineer-of-record, Dr. Rosignoli performed a full independent design review according to DIN Norms and Greek Standards. Tasks included site-specific seismic-hazard assessment, nonlinear time-history dynamic analysis of multiple seismic I/D systems, staged construction analysis of incremental launching and balanced cantilever construction, analysis of time-dependent stress redistribution, constructability reviews, and checking of drawings and bar-bending schedules.
- Egnatia Odos (2000-2002). Arachthos Bridge, Ioannina, Greece. Owner: Egnatia Odos. Procurement method: DBB. A 980m PC bridge designed by Christian Menn included 107m spans and 79m-tall V-shaped piers to be erected within the Stenos Dam reservoir; the 27m-wide deck was designed for casting a central box core as balanced cantilevers and widening the side wings segmentally with forming carriages. As engineer-of-record, Dr. Rosignoli performed a full independent design review according to DIN Norms and Greek Standards. Tasks included site-specific seismic-hazard assessment, nonlinear time-history dynamic analysis of multiple seismic I/D systems, analysis of time-dependent stress redistribution of staged construction, analysis of shear-lag and stability of slender frame piers, constructability reviews, and checking of drawings and bar-bending schedules.
- Egnatia Odos (1999-2001). Greveniotikos Bridge, Grevena, Greece. Owner: Egnatia Odos. Procurement method: DBB. The project includes two adjacent 920m PC bridges cast segmentally on 100m spans by balanced cantilever construction with form travelers. As engineer-of-record, Dr. Rosignoli performed a full independent design review according to DIN Norms and Greek Standards. Tasks included nonlinear pushover analysis of plastic collapse mechanisms, analysis of the time-dependent stress redistribution of staged construction, constructability review, and checking of drawings and bar-bending schedules. A supplementary assignment included design review and load testing supervision of viscous dampers.