Author(s): Shiaw-Yih Tzang; Shan-Huei Ou; Tai-Wen Hsu
Linked Author(s): Tai-Wen Hsu
Keywords: Fine sandy beds; Pore pressure; Wave-induced soil fluidization
Abstract: In this study several wave flume tests on wave-induced seabed responses of a fine sandy soil (d50=0.85μm) were conducted to investigate the characteristics of fluidized responses. Analyses on pore pressure measurements first show three typical responses, defined as unfliudized, initial fluidized and ensuing fluidized, respectively. A fluidized response is identified as the mean pore pressure build-up approaches the soil's static stress at a given soil depth. Comparisons with Foda & Tzang's (1994) data immediately demonstrate differences of pore pressure responses in several aspects between present fine sandy beds and their silty beds such as no mean pore pressure build-ups in the unfluidized response nor evident mechanism of resonance in the initial fluidized responses. But similarly increasing sediment suspensions were again clearly observed over the fluidized sandy seabed
Year: 2001