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http://dx.doi.org/10.7843/kgs.2021.37.12.73

Evaluation of Seismic Performance of Pile-supported Wharves Installed in Saturated Sand through Response Spectrum Analysis and Dynamic Centrifuge Model Test  

Yun, Jung-Won (Dept. of Civil Engrg., Korea Army Academy at Yeongcheon)
Han, Jin-Tae (Dept. of Geotechnical Engrg. Research, Korea Institute of Civil Engrg. and Building Technology)
Lee, Seokhyung (Dept. of Geotechnical Engrg. Research, Korea Institute of Civil Engrg. and Building Technology)
Publication Information
Journal of the Korean Geotechnical Society / v.37, no.12, 2021 , pp. 73-87 More about this Journal
Abstract
Pile-supported wharf is a structure that can transmit and receive cargo, and it is mainly installed on saturated inclined ground. In the seismic design of these structures, the codes suggest using the response spectrum analysis method as a preliminary design method. However, guideline on modeling method for pile-supported wharf installed in saturated soil is lacking. Therefore, in this study, the dynamic centrifuge model test and response spectrum analysis were performed to evaluate the seismic performance of pile-supported wharf installed into the saturated soil. For the test, some sections (3×3 pile group) among the pile-supported wharf were selected, and they were classified into two model (dry and saturated sand model). Then the response spectrum analysis was performed by using the soil spring method to the test model. As a result of test and analysis, the m om ent difference occurred within a m axim um of 51% in the dry sand m odel and the saturated sand model where liquefaction does not occur, and it was found that the pile moment by depth was properly simulated. Therefore, in the case of these models, it is appropriate to perform the modeling using the Terzaghi (1955) constant of horizontal subgrade reaction (nh)
Keywords
Dynamic centrifuge model test; Elastic soil spring; Pile-supported wharf; Response spectrum analysis; Saturated sand;
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