变电站支柱类设备减隔震设计方法

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (24) : 109-116.

论文

变电站支柱类设备减隔震设计方法

石高扬谢强刘匀赖炜煌

作者信息 +

A design method on seismic isolation and reduction of post equipment in substation

SHI Gaoyang，XIE Qiang，LIU Yun，LAI Weihuang

Author information +

文章历史 +

摘要

减隔震设计是降低支柱类设备地震易损性的有效手段。本文建立了带有减隔震支座的支柱类设备分布参数体系理论模型，通过地震模拟振动台试验验证其有效性，对不同电压等级的支柱类设备进行减隔震参数分析，归纳减隔震的通用设计方法。结果表明：不同隔震支座的转动刚度下，特高压支柱类设备的应力响应先随着阻尼系数的增加而降低，最终趋于平稳；不同隔震支座的阻尼系数下，超高压及以下电压等级支柱类设备的应力响应随着转动刚度的增加而近似呈现出近似线性增加的趋势，且曲线斜率随着阻尼的增加而降低；增加阻尼会小幅度的降低隔震支座滞回曲线的等效刚度。支柱类设备减隔震设计方法应根据不同的电压等级采用不同的设计流程，超高压及以下电压等级的支柱类设备应先调整隔震支座的转动刚度，特高压设备则需要首先选择合适的阻尼参数。基于分布参数体系理论模型可以对支柱类设备的地震响应进行快速分析和减隔震设计提出指导。

Abstract

Isolation design is an effective means to reduce the seismic vulnerability of post equipment. In this paper, a simplified theoretical model for seismic isolation of post equipment based on distributed parameter system is established, and the effectiveness is verified by shaking table test of seismic simulation. The seismic isolation design parameters of post equipment with different voltage grades are analyzed and the general design methods are concluded. The following results are summarized: under different rotational stiffness of isolation, the stress response of ultra-high voltage (UHV) post equipment decreases with the increase of damping coefficient, and eventually tends to be stable; under the different damping coefficients of the isolation, the stress response of the extra-high voltage (EHV) and its below voltage grade post equipment approximately shows an approximate linear increase trend with the increase of the rotational stiffness, and the slope of the curve decreases with the increase of the damping. In addition, the equivalent stiffness of the hysteretic curve of isolation will be reduced by increasing damping coefficient. The seismic isolation design method of post equipment should adopt different design processes according to voltage grades; the rotational stiffness of the isolation should be changed first for the extra-high voltage (EHV) and its below voltage grade post equipment, however, the design idea of UHV equipment is the suitable damping parameter should be arranged firstly. The simplified model based on distributed parameter system can provide guidance for rapid analysis of seismic response and isolation design of post equipment.

导出引用

石高扬谢强刘匀赖炜煌. 变电站支柱类设备减隔震设计方法[J]. 振动与冲击, 2023, 42(24): 109-116

SHI Gaoyang，XIE Qiang，LIU Yun，LAI Weihuang. A design method on seismic isolation and reduction of post equipment in substation[J]. Journal of Vibration and Shock, 2023, 42(24): 109-116

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