3 documents found, page 1 of 1
Design of pre-cast two-column bents using strut-and-tie models and nonlinear fi...
Carvalho, Lucas; Pimentel, Mário; Arêde, António; Pouca, Nelson Vila; Delgado, Pedro; Pinto, José RuiThe collapse of the Cypress Street Viaduct during the 1989 Loma Prieta earthquake raised awareness to the seismic design and detailing of the connections between cap beams and columns. Current standards require a considerable amount of transverse reinforcement inside the joints, leading to reinforcement congestion and constructability problems. Moreover, some design rules are rather unclear and the link to the ...
Numerical modelling and strut-and-tie concepts for seismic design and assessmen...
Carvalho, Lucas; Pimentel, Mário; Delgado, Pedro; Arêde, António; Pouca, Nelson Vila; Pinto, José RuiPrecast structures are more common in zones not affected by earthquakes or affected by low - to moderate-intensity earthquakes; the application of precast structures in zones of higher seismic intensity is unusual due to the seismic performance uncertainty of these structures. Concerning precast bridges, special attention needs to be paid on the column to cap-beam connections, as well as the methods to anchor t...
Conception and justification of a new test setup for assessment of the fatigue ...
Sousa, Frutuoso; Sousa, Carlos; Delgado, Pedro; Arêde, António; Pouca, Nelson VilaImportant investments have been made worldwide in the modernization and construction of railway lines. Plans for new constructions, have also been laid out. Recently, precast concrete has been widely employed in the construction of railway bridges and viaducts. Several precast solutions have been applied, namely: I-shaped or U-shaped precast girders and uni-cellular or bi-cellular precast box girders. Regarding...