Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Analysis of Water Distribution Buried Jointed Pipe Networks Subjected to Seismic Waves Considering the Nonlinear Behavior of Connections
A more precise method for evaluating the seismic behavior of jointed buried pipes networks is presented considering the connections' nonlinear behavior and the main line-branches interaction. Desired network consists of ductile iron pipe segments of 6 m length with diameters of 150, 200, and 300 mm. Elbow and culvert connections are of bolted-gland type, and the remainder is of socket-spigot type. Ductile iron strain stress behavior was assumed as bilinear for performing a series of finite element (FE) analyses on various connections by inclusion of pipe-gasket interaction. First, the connections were modeled by FE method to obtain their hysteretic behaviors. Then, a network, containing three branches, was modeled by beam elements, connected to each other and to the supports by bilinear 3-D springs. The network was analyzed subjected to three-component selected records, considering the time lag between the nodal inputs and various incidence angles. The obtained maximum strains along the pipeline and relative displacements and rotations at connections show that failure of connections is more likely in pipes with larger diameters. Moreover, the existence of branches leads to increase of damage to the network components, particularly to pipes with larger diameters.
Analysis of Water Distribution Buried Jointed Pipe Networks Subjected to Seismic Waves Considering the Nonlinear Behavior of Connections
A more precise method for evaluating the seismic behavior of jointed buried pipes networks is presented considering the connections' nonlinear behavior and the main line-branches interaction. Desired network consists of ductile iron pipe segments of 6 m length with diameters of 150, 200, and 300 mm. Elbow and culvert connections are of bolted-gland type, and the remainder is of socket-spigot type. Ductile iron strain stress behavior was assumed as bilinear for performing a series of finite element (FE) analyses on various connections by inclusion of pipe-gasket interaction. First, the connections were modeled by FE method to obtain their hysteretic behaviors. Then, a network, containing three branches, was modeled by beam elements, connected to each other and to the supports by bilinear 3-D springs. The network was analyzed subjected to three-component selected records, considering the time lag between the nodal inputs and various incidence angles. The obtained maximum strains along the pipeline and relative displacements and rotations at connections show that failure of connections is more likely in pipes with larger diameters. Moreover, the existence of branches leads to increase of damage to the network components, particularly to pipes with larger diameters.
Analysis of Water Distribution Buried Jointed Pipe Networks Subjected to Seismic Waves Considering the Nonlinear Behavior of Connections
Hosseini, Mahmood (Autor:in) / Boorboor, Alireza (Autor:in) / Farshadmanesh, Pegah (Autor:in)
Pipelines 2014 ; 2014 ; Portland, Oregon
Pipelines 2014 ; 1175-1186
30.07.2014
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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