设置侧向限位阻尼器的层间隔震结构减震性能研究

赵立菊; 王善库; 王晓琳; 葛新广

doi:10.21656/1000-0887.440194

设置侧向限位阻尼器的层间隔震结构减震性能研究

doi: 10.21656/1000-0887.440194

1.
信阳职业技术学院建筑工程学院，河南信阳 464000
2.
柳州工学院土木建筑学院, 广西柳州 545004

基金项目:

国家自然科学基金 51468005

详细信息

作者简介:
赵立菊(1987—)，女，副教授，硕士(E-mail: 363700578@qq.com)

通讯作者:
葛新广(1977—)，男，副教授，博士，硕士生导师(通讯作者. E-mail: gxgzlr.2008@163.com)

中图分类号: O324
计量
- 文章访问数: 137
- HTML全文浏览量: 54
- PDF下载量: 23
- 被引次数: 0
出版历程
- 收稿日期: 2023-06-27
- 修回日期: 2024-02-26
- 刊出日期: 2024-05-01

Research on Anti-Seismic Performances of Interlayer Isolation Structures With Lateral Stopping Viscoelastic Dampers

1.
College of Architectural Engineering, Xinyang Vocational and Technical College, Xinyang, Henan 464000, P.R.China
2.
School of Civil Engineering and Architecture, Liuzhou Institute of Technology, Liuzhou, Guangxi 545004, P.R.China

摘要

摘要: 对在隔震层设置侧向限位黏弹性阻尼器组成混合耗能结构随机激励下的减震性能进行了系统研究. 首先, 建立混合耗能结构的地震动方程，利用双过滤白噪声激励地震动的滤波方程，将该类激励下混合耗能结构的动力学问题精确转化为基于易于获得简明封闭解的白噪声激励问题. 其次，基于复模态法和白噪声激励的Dirac函数性质推导了混合耗能结构系列响应(结构位移、层间位移和阻尼器阻尼力)的方差和0~2阶谱矩的简明封闭解. 最后，通过算例在验证所提封闭解正确的基础上研究了混合耗能结构减震性能的影响因素. 研究表明：层间隔震层以上楼层的结构响应量随着隔震层刚度的增大而增大；黏弹性阻尼器阻尼参数对隔震层以上楼层的影响特征为，结构位移在一定阻尼参数下可达到最小，而层间位移则随着阻尼参数的增大而增大. 该研究可为层间隔震混合耗能结构的设计提供参考.
- 层间隔震 /
- 侧向限位阻尼器 /
- 滤波方程 /
- 简明封闭解 /
- 减震性能
Abstract: Anti-seismic performances of the hybrid energy dissipation structure (HEDS) composed of an isolation interlayer with lateral stopping viscoelastic dampers (VEDs) under random excitation were systematically investigated. Firstly, the seismic motion equations for the HEDS subjected to the double-filtered white noise excitation (DFWNE) were established, and the filtering equation of the DFWNE was used to accurately transform the dynamic calculation of the HEDS based on the DFWNE into white noise excitation problems to be easily tackled with concise closed-form solutions. Secondly, based on the complex mode method and the properties of the Dirac function for white noise excitation, a concise closed-form solution of the variance and 0th-to 2nd-order spectral moments of the series of responses (structural displacements, interlayer displacements, and damper damping forces) of the HEDS, was derived. Finally, based on the verification of the correctness of the proposed closed solution through numerical examples, the influencing factors on the seismic performances of the HEDS were studied. The results show that, the structural responses of floors above the isolation layer increase with the stiffness of the isolation layer; while the damping parameter of the VED have different effects on the interlayer displacement and structural displacements of floors above the isolation layer, i.e., the structural displacement can reach the minimum under certain damping parameter of the VED, but the interlayer displacement increases with the damping parameter of the VED. This study can provide reference for the design of HEDSs.
- interlayer isolation /
- lateral stopping viscoelastic damper /
- filtering equation /
- concise closed-form solution /
- anti-seismic performance

HTML全文

图 1 层间隔震结构计算简图

Figure 1. The calculation model for the interlayer isolated structure

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图 2 结构第2层位移功率谱

Figure 2. The displacement power spectrum of the 2nd floor

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图 3 阻尼器出力功率谱

Figure 3. Damper's force power spectrum

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图 4 结构位移0阶谱矩

Figure 4. The 0th-order spectral moments of the structure displacement

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图 5 结构位移1阶谱矩

Figure 5. The 1st-order spectral moments of the structure displacement

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图 6 结构位移2阶谱矩

注为了解释图中的颜色，读者可以参考本文的电子网页版本，后同.

Figure 6. The 2nd-order spectral moments of structure displacement

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图 7 结构位移方差与隔震层位置的关系图8 结构层间位移方差与隔震层位置的关系

Figure 7. Relationships between structural displacement variances and isolation layer positions Fig. 8 Relationships between structural interlayer displacement variances and isolation layer positions

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图 9 结构位移方差与k_b的关系

Figure 9. Relationships between structural displacement variances and k_b values

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图 10 结构层间位移方差与k_b的关系

Figure 10. Relationships between structural interlayer displacement variances and k_b values

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图 11 结构位移方差与C_V的关系

Figure 11. Relationships between structural displacement variances and C_V values

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图 12 结构层间位移方差与C_V的关系

Figure 12. Relationships between structural interlayer displacement variances and C_V values

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表 1 阻尼器出力0阶、1阶谱矩计算

Table 1. The 0th-and 1st-order spectral moments of damper's force

method	Δω/(rad/s)	0th-order/N²	1st-order/(N²·s^-1)
the pseudo excitation method (PEM)	1	32.856 6	87.709
	0.1	98.929 3	186.916
	0.01	99.906 5	188.356
the proposed method		99.903 7	188.356

下载: 导出CSV

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