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Elasto-Plastic Responses Of Buried Pipeline Systems Under Wave Propagation, Yuean-Chen Lau
Elasto-Plastic Responses Of Buried Pipeline Systems Under Wave Propagation, Yuean-Chen Lau
Civil & Environmental Engineering Theses & Dissertations
The purpose of this research is to study the elastic and inelastic behavior of buried pipeline system under arbitrary seismic wave propagation. Both continuous and segmented pipes with joints and junctions are included. The surrounding soil is simulated by a series of elasto-plastic springs uniformly distributed longitudinally and laterally along the pipes. To the joints, elasto-plastic longitudinal springs and bilinear rotational springs are adopted. It is assumed that the pipes remain linearly elastic. The effects of soil liquefaction and fault movement are not considered.
Since the dynamic effect has been found to be negligible, a quasi-static analysis is adopted in …
Seismic Response Of Pipeline Systems In A Soil Liquefaction Environment, Hongzhi Zhang
Seismic Response Of Pipeline Systems In A Soil Liquefaction Environment, Hongzhi Zhang
Civil & Environmental Engineering Theses & Dissertations
This research is a study of the general seismic response behavior of buried pipeline systems during a soil liquefaction process. To aid the design of buried pipelines in a soil liquefaction environment, the purpose of this research is to provide the basic dynamic seismic response of different pipeline systems. Several important parameters such as pipe diameter, buried depth, additional mass and the size of the liquefiable soil zone have been introduced. The pipeline systems under study are cross-types, T-types and straight pipelines, with or without a manhole, buried in a soil liquefiable zone.
Time-varying soil spring constants are used for …