[1]周宇航,黄襄云,张 颖,等.大跨度空间网架结构屋盖隔震参数化分析[J].华南地震,2026,46(01):94-102.[doi:10.13512/j.hndz.2026.01.11]
　ZHOU Yuhang,HUANG Xiangyun,ZHANG Ying,et al.Parametric Analysis of Earthquake Isolation for Long-Span Spatial Structure Roof Systems[J].,2026,46(01):94-102.[doi:10.13512/j.hndz.2026.01.11]
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大跨度空间网架结构屋盖隔震参数化分析()

华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
46
期数:
2026年01期
页码:
94-102
栏目:
土木工程防震减灾
出版日期:
2026-01-31

文章信息/Info

Title:
Parametric Analysis of Earthquake Isolation for Long-Span Spatial Structure Roof Systems
文章编号:
1001-8662（2026）01-0094-09
作者:
周宇航1; 黄襄云1; 2; 3; 张 颖1; 2; 3; 侯纪帆4
1.广州大学工程抗震研究中心，广州 510405;2.广东省地震工程与应用技术重点实验室，广州 510405;3.工程抗震减震与结构安全教育部重点实验室，广州 510405;4.重庆应用技术职业学院，重庆 401520
Author(s):
ZHOU Yuhang1; HUANG Xiangyun1; 2; 3; ZHANG Ying1; 2; 3; HOU Jifan4
1.Earthquake Engineering Research&Test Center ， Guangzhou University ， Guangzhou 510405， China ;2.Guangdong Provincial Key Laboratory of Earthquake Engineering and Applied Technology ， Guangzhou 510405， China;3.Key Laboratory of Earthquake Resistance ， Earthquake Mitigation and Structural Safety ， Ministry of Education， Guangzhou 510405， China;4.Chongqing Vocational College of Applied Technology ， Chongqing 401520， China
关键词:
屋盖隔震; 简化三质点模型; 频率范围; 屋盖结构质量
Keywords:
Roof isolation; Simplified three-mass-point model; Frequency ranges characteristics; Structural qu-ality of the roof
分类号:
TU352.12
DOI:
10.13512/j.hndz.2026.01.11
文献标志码:
A
摘要:
针对大跨度空间结构采用屋盖隔震设计时会引起下部框架结构响应增大的问题，利用简化三质点模型运动方程，采用拉普拉斯变换推导了结构的传递函数，对比了抗震结构、屋盖隔震结构和TMD结构在不同激励频率下的响应。通过调整上部屋盖结构的质量，对比分析了屋盖隔震结构在不同质量比下的地震动响应。当屋盖结构质量较小，如质量比μm3为3%、5%、6%时，屋盖结构自振频率不等于结构一阶自振频率时，达不到调谐减震，同时质量较小不能有效延长结构周期，会导致下部框架结构地震作用力增大。当屋盖结构质量较小，如质量比μm3为3%、5%、6%时，通过改变刚度使得屋盖结构频率接近结构一阶自振频率可以使得下部框架结构地震作用力减小，达到调谐减震的效果，类似于TMD，但同时屋盖结构地震作用力会增大，对网架结构不利，但通过增大屋盖结构质量，质量比μm3为30%时会出现下部框架结构响应减小，此时是通过延长结构周期实现。
Abstract:
Aiming at the problem that the large-span space structure with roof isolation design may lead to an in creased response of the lower frame structure to increase， this paper utilizes the simplified three-mass model and its equations of motion to derive the transfer function of the structure via Laplace transform，and compares the re sponses of the conventional seismic-resistant structure， the roof-isolated structure， and the Tuned Mass Damper （TMD）structure under different excitation frequencies. Furthermore，by adjusting the mass of the upper roof struc ture，the seismic response of the ground vibration roof isolation structure under different mass ratios was compared and analyzed. When the mass of the roof structure is relatively small，with mass ratio μm3 of 3%，5%，and 6%， optimal damping cannot be achieved if the natural frequency of the roof structure is deviates from the first-order nat ural frequency of the main structure. Moreover，the insufficient mass cannot effectively lengthen the structural pe riod， resulting in increased seismic demands on the lower frame structure. However， for these small mass ratio （μm3 for 3%，5%，6%)，adjusting the stiffness of the roof structure so that its frequency approaches the first-order natural frequency of the main structure can reduce the seismic demands on the lower frame stucture，achieving a tuned damping effect analogous to that of a TMD. Nevertheless， this approach simultaneously increases the seis mic demands on the roof structure itself， which is unfavorable for the grid structure. In contrast，by significantly increasing the mass of the roof structure to a mass ratio μm3 of 30%，the response of the lower frame structure can be reduced，primarily realized through period elongation.

参考文献/References:

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相似文献/References:

[1]贾霞霞,沈朝勇,黄襄云,等.大跨度空间网架结构屋盖隔震设计研究[J].华南地震,2021,41(01):123.[doi:10.13512/j.hndz.2021.01.17]
　JIA Xiaxia,SHEN Chaoyong,HUANG Xiangyun,et al.Study on Roof Isolation Design of Long Span Space Grid Structure[J].,2021,41(01):123.[doi:10.13512/j.hndz.2021.01.17]

备注/Memo

备注/Memo:
收稿日期：2025-02-17
基金项目：国家重点研发计划（2017YFC1500705）
作者简介：周宇航（2000-），男，硕士研究生，主要从事结构振动控制的研究。E-mail：1269696843@qq.com
通信作者：黄襄云（1966-），女，教授，主要从事结构振动控制的研究。E-mail：eertchxy@gzhu.edu.cn
更新日期/Last Update: 2026-02-03