ISSN: 1945-7545
CODEN: GTJODJ
Published Online: 23 March 2010
Page Count: 13

In Situ Dynamic Model Test for Pile-Supported Wharf in Liquefied Sand

Chang, Wen-Jong
Assistant Professor, Dept. of Civil Engineering, National Cheng Kung Univ., Tainan,

Chen, Jyh-Fang
Associate Researcher, Harbor and Marine Technology Center, Institute of Transportation, Taichung,

Ho, Hsing-Chuan
Research Engineer, Geotechnical Engineering Research Center, Sinotech Engineering Consultants, Inc., Taipei,

Chiu, Yung-Fang
Director, Harbor and Marine Technology Center, Institute of Transportation, Taichung,

(Received 19 March 2009; accepted 11 February 2010)

Abstract

Pile-supported wharf is a general option in port design to provide lateral resistance and bearing capacity under both static and dynamic loadings. In situ large-scale physical modeling using surface wave generator was performed to study the dynamic soil-structure interactions in pile-supported wharves and to verify configuration of an in situ monitoring station. A wharf model consisting of two steel pipe piles welded on a steel slab was installed on a reconstituted underwater embankment. Due to screening of stress waves, the two piles are subjected to different loading conditions. Data reduction procedures were developed to analyze coupled shear strain-pore pressure generation behavior, pile responses, and soil-pile interaction characteristics. The results proved that the physical modeling can capture the interactions among the induced shear strain, generated excess pore pressure, and dynamic p-y behavior around piles. Preliminary results also show that evolutions of dynamic p-y curve with excess pore pressure variations should be included in soil-pile interaction modeling.

Keywords:
dynamic soil-structure interaction, pile-supported wharf, large-scale pile-liquefied soil modeling, soil liquefaction

Paper ID: GTJ102425
DOI: 10.1520/GTJ102425
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