周期性隔震基础的优化设计与试验验证

孙飞飞1,2,杨嘉琦1,肖蕾1

振动与冲击 ›› 2020, Vol. 39 ›› Issue (12) : 1-8.

PDF(1793 KB)
PDF(1793 KB)
振动与冲击 ›› 2020, Vol. 39 ›› Issue (12) : 1-8.
论文

周期性隔震基础的优化设计与试验验证

  • 孙飞飞1,2,杨嘉琦1,肖蕾1
作者信息 +

Optimal design and test of periodic foundation

  • SUN Feifei1,2,YANG Jiaqi1,XIAO Lei1
Author information +
文章历史 +

摘要

周期性隔震基础是利用周期性结构的衰减域特性,将地震动与上部结构自振频率接近的频率范围内的能量衰减,从而控制上部结构响应的新型隔震装置。周期性基础的隔震性能受到多方面因素的影响,包括局域共振子的调谐频率比、质量比、阻尼比、基体的刚度、上部结构与基础的相互作用以及地震动的频谱特性等。目前尚未有研究综合考虑上述因素的影响并提出周期性基础的设计方法。本文提出以一组地震动作用下上部结构峰值响应衰减率的平均值为目标函数,对周期性基础进行优化的设计方法。计算结果表明,按照该优化方法得到的周期性基础对上部结构在选取的44条地震动作用下,峰值响应的平均衰减率达30%。参数敏感性分析表明,优化设计得到的周期性基础对于自身参数的变化具有良好的鲁棒性。最后利用缩尺振动台试验验证了优化设计得到的周期性基础的隔震性能,证明了优化方法的有效性和优化结果的正确性。

Abstract

The idea of employing periodic foundations (PFs) to mitigate seismic damage to superstructure relies on attenuating seismic waves’ energy around the superstructure’s Eigenfrequency. The seismic mitigation performance of PFs depends on several aspects, including the tuning frequency ratio of inner resonators and their mass ratios and damping ratios. The stiffness of host material, the reaction of superstructures and frequency components of seismic waves also influence the performance of PFs. An optimization design method based on the average reduction of peak responses of a superstructure under excitations of several selected seismic waves is proposed. The result indicates that the peak responses of the superstructure under 44 selected seismic waves are averagely reduced by 30% by the optimal PF. Parametric studies indicate that the performance of the optimal PF is robust concerning to parameter deviations. The effectiveness of the design method was proved by a small scaled shaking table test.

关键词

周期性基础 / 衰减域 / 隔震 / 优化

Key words

Periodic foundation / Attenuation zone / Seismic isolation / Optimization

引用本文

导出引用
孙飞飞1,2,杨嘉琦1,肖蕾1. 周期性隔震基础的优化设计与试验验证[J]. 振动与冲击, 2020, 39(12): 1-8
SUN Feifei1,2,YANG Jiaqi1,XIAO Lei1. Optimal design and test of periodic foundation[J]. Journal of Vibration and Shock, 2020, 39(12): 1-8

参考文献

[1] BASONE F, WENZEL M, BURSI O S, et al. Finite locally resonant Metafoundations for the seismic protection of fuel storage tanks [J]. Earthq Eng Struct Dyn,
[2] LA SALANDRA V, WENZEL M, BURSI O S, et al. Conception of a 3D Metamaterial-Based Foundation for Static and Seismic Protection of Fuel Storage Tanks [J]. Frontiers in Materials, 2017, 4(
[3] CHENG Z B, SHI Z F. Composite periodic foundation and its application for seismic isolation [J]. Earthq Eng Struct Dyn, 2018, 47(4): 925-44.
[4] SHI Z, CHENG Z, XIANG H. Seismic isolation foundations with effective attenuation zones [J]. Soil Dyn Earthq Eng, 2014, 57(143-51.
[5] KIM S H, DAS M P. SEISMIC WAVEGUIDE OF METAMATERIALS [J]. Mod Phys Lett B, 2012, 26(17): 8.
[6] DERTIMANIS V K, ANTONIADIS I A, CHATZI E N. Feasibility analysis on the attenuation of strong ground motions using finite periodic lattices of mass-in-mass barriers [J]. Journal of Engineering Mechanics, 2016, 04016060.
[7] PERSSON P, PERSSON K, SANDBERG G. Numerical study of reduction in ground vibrations by using barriers [J]. Eng Struct, 2016, 115(18-27.
[8] CHENG Z B, SHI Z F. Novel composite periodic structures with attenuation zones [J]. Eng Struct, 2013, 56(1271-82.
[9] ANAJAFI H, MEDINA R A. Comparison of the seismic performance of a partial mass isolation technique with conventional TMD and base-isolation systems under broad-band and narrow-band excitations [J]. Eng Struct, 2018, 158(110-23.
[10] SHI Z F, HUANG J K. Feasibility of reducing three-dimensional wave energy by introducing periodic foundations [J]. Soil Dyn Earthq Eng, 2013, 50(204-12.
[11] FINOCCHIO G, CASABLANCA O, RICCIARDI G, et al. Seismic metamaterials based on isochronous mechanical oscillators [J]. Applied Physics Letters, 2014, 104(19):
[12] HUANG J, SHI Z, HUANG W, et al. A periodic foundation with rotational oscillators for extremely low-frequency seismic isolation: analysis and experimental verification [J]. Smart Mater Struct, 2017, 26(3):
[13] YAN Y, CHENG Z, MENQ F, et al. Three dimensional periodic foundations for base seismic isolation [J]. Smart Mater Struct, 2015, 24(7): 11.
[14] YAN Y, LASKAR A, CHENG Z, et al. Seismic isolation of two dimensional periodic foundations [J]. J Appl Phys, 2014, 116(4): 12.
[15] XIANG H J, SHI Z F, WANG S J, et al. Periodic materials-based vibration attenuation in layered foundations: experimental validation [J]. Smart Materials & Structures, 2012, 21(11): 481-4.
[16] 石志飞, 程志宝, Y.L.MO. 周期性隔震基础的理论与实验研究进展 [J]. 地震工程与工程振动, 2014, S1: 763-8.
SHI Zhifei, CHENG Zhibao,MO Yilung. Theoretical and experimental studies of periodic foundations [J]. Earthquake Engineering and Engineering Dynamics, 2014, S1: 763-8.
[17] KALOGERAKOU M E, MANIATAKIS C A, SPYRAKOS C C, et al. Seismic response of liquid-containing tanks with emphasis on the hydrodynamic response and near-fault phenomena [J]. Eng Struct, 2017, 153(383-403.
[18] BURSI O S E A. Component fragility evaluation, seismic safety assessment and design of petrochemical plants under design-basis and beyond- design-basis accident conditions. mid-term report, INDUSE-2-SAFETY project, contr. no. RFS-PR-13056. research fund for coal and steel. [M]. 2016.
[19] MALHOTRA P K, WENK T, WIELAND M. Simple procedure for seismic analysis of liquid-storage tanks [J]. Structural Engineering International 2000, 10(3): 197-201.
[20] SHRIMALI M K, JANGID R S. Seismic analysis of base-isolated liquid storage tanks [J]. Journal of Sound & Vibration, 2004, 275(1–2): 59-75.
[21] FEMA: Applied Technology Council, Redwood City ,California 2008.

PDF(1793 KB)

541

Accesses

0

Citation

Detail

段落导航
相关文章

/