Evaluation of the Virtual Fixed-Point Method for Seismic Design of Pile-Supported Structures

被引:5
|
作者
Yun, Jung Won [1 ]
Han, Jin Tae [2 ]
Kwan, Jong [2 ]
机构
[1] Korea Army Acad Yeong Cheon, Dept Civil Engn, Yeongcheon 38900, South Korea
[2] Korea Inst Civil Engn & Bldg Technol, Dept Geotech Engn Res, Goyang 10223, South Korea
关键词
Pile-supported structure; Virtual fixed-point; Pseudo-static analysis; Response spectrum analysis; Soil spring; Dynamic centrifuge model test; RESPONSE SPECTRUM METHOD; GEOTECHNICAL CENTRIFUGE; PERFORMANCE;
D O I
10.1007/s12205-021-0422-1
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Traditionally, in the codes for seismic performance evaluation of pile-supported structures (PSS), the piles are modeled using either a virtual fixed-point (VFP) method or a soil spring method, which can additionally simulate soil-pile interactions. The applicability and accuracy of the VFP method, which is originated from statically loaded piles, to evaluate piles under seismic loads has not been sufficiently explored, despite the popularity of the technique. Thus, this study evaluates the applicability of the VFP in the seismic design of PSS through pseudostatic and response spectrum analyses (RSA). Our results indicated that there was a significant difference in between the experimentally derived and VFP model-derived values for the natural period, acceleration, and moment response of the structure. This difference occurs because the soil-pile interaction is simulated through the fixed end in the VFP model.
引用
收藏
页码:596 / 605
页数:10
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