Seismic retrofit of spherical liquid storage tanks with energy dissipative devices

被引：18
作者：
Drosos, J. C. [1 ]
Tsinopoulos, S., V [2 ]
Karabalis, D. L. [3 ]
机构：
[1] SigmaF Civil Engn Consultants, Alexandroupoleos 7, GR-11527 Athens, Greece
[2] Technol Educ Inst Western Greece, Dept Mech Engn, GR-26334 Patras, Greece
[3] Univ Patras, Dept Civil Engn, GR-26504 Rion, Greece
来源：
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2019年 / 119卷
关键词：
Spherical tank; Tension brace; Non-linear viscous damper; Buckling-restrained brace; Friction brace; Finite element model; Sloshing; Modal analysis; Seismic response; Time domain analysis;
D O I：
10.1016/j.soildyn.2019.01.003
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Numerical studies on the seismic behavior of a typical spherical liquid storage tank, equipped with conventional braces or retrofitted with passive energy dissipation devices, are presented. Three energy dissipation systems, in the form of diagonal braces, are investigated: non-linear viscous dampers and buckling-restrained and friction struts. All numerical analyses are performed by means of a detailed finite element model, considering the exact geometry of the elevated steel tank structure, the fluid-structure interaction effects for an arbitrary level of fluid filling, as well as the non-linearities introduced by the various bracing systems. Representative results for base shear forces, vertical displacements of the fluid content due to sloshing and displacements at characteristic locations of the retrofitted spherical tank are presented. The benefits introduced by each of the dissipative bracing systems used in this study are identified and discussed in comparison to the dynamic characteristics and the seismic response of the original spherical tank, fitted with a conventional bracing system.
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页码：158 / 169
页数：12
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