Effect of structural inertia on liquefaction-induced settlements of shallow foundations

被引：8

作者：

Bazaios, Konstantinos N. ^{[1
]}

Papadimitriou, Achilleas G. ^{[1
]}

Bouckovalas, George D. ^{[1
]}

Tsiapas, Yannis Z. ^{[1
]}

机构：

[1] Natl Tech Univ Athens, Sch Civil Engn, Athens, Greece

来源：

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2023年 / 164卷

关键词：

SEISMIC BEARING CAPACITY; PLASTICITY MODEL; SOIL; BUILDINGS;

D O I：

10.1016/j.soildyn.2022.107546

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The majority of published research on the performance-based design of shallow foundations on liquefiable soil focuses on seismic settlement accumulation by neglecting soil-structure-interaction (SSI) effects. On the other hand, SSI effects prove dominant when the foundation soil is non-liquefiable. Thus, the aim of this paper is to investigate the dynamic response of structure-foundation-soil (SFS) systems by examining the role of structural inertia on the performance of shallow foundations on liquefied soil, through a series of 3D fully coupled nonlinear numerical analyses of SFS systems. As a first step, the nonlinear fundamental period of vibration of the SFS system is correlated to the key system and excitation parameters. Next, in order to isolate the effects of structural inertia, shear-induced seismic settlements of SFS systems in liquefied soil are compared with the respective settlements of conjugate foundation-soil (FS) systems that apply the same static contact pressure on the foundation soil. Finally, approximate relations are proposed for the effects of structural inertia on liquefaction-induced settlements of shallow foundations, based on a multivariable statistical analysis of the numerous parametric numerical estimates.

引用

页数：12

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