输电塔体内拉索-杠杆惯容阻尼系统风振控制及参数优化

曹枚根; 张若愚

doi:10.11899/zzfy20240118

输电塔体内拉索-杠杆惯容阻尼系统风振控制及参数优化

doi: 10.11899/zzfy20240118

曹枚根^1,,
张若愚²

1.
北方工业大学, 土木工程学院, 北京 100144
2.
上海大学, 力学与工程科学学院, 上海 200444

基金项目: 国家电网有限公司总部指南科技项目（5200-201919121A-0-0-00）；浙江省电力实业总公司科技项目（CF058807002021006）

详细信息

作者简介:
曹枚根，男，生于1975年。博士，研究员。主要从事输变电工程防灾减灾技术研究与应用工作。E-mail：314613692@qq.com

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- 文章访问数: 66
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出版历程
- 收稿日期: 2023-06-17
- 刊出日期: 2024-03-31

Wind-induced Vibration Control and Parameter Optimization of the Cable-lever Rotation Inerter System in the Transmission Tower

Cao Meigen^1
,,
Zhang Ruoyu²

1.
School of Civil Engineering, North China University of Technology, Beijing 100144, China
2.
School of Mechanics Engineering Science of Shanghai University, Shanghai 200444, China

摘要

摘要: 输电塔作为受风控制的高耸空间钢结构，风振控制技术是解决铁塔风灾受损、倒塔的重要技术手段之一。针对现有输电塔风振控制技术适应性不足的问题，提出了可在自立式输电塔体内布置的拉索-杠杆式旋转惯容阻尼器（CLRID）和优化设计方法。首先推导了CLRID典型平面刚架运动方程，然后开展了基于脉动风荷载特性的CLRID减振性能参数分析，最后考虑塔架性能需求对CLRID进行参数优化，得到固定布置夹角下的CLRID最优设计参数。研究结果表明，除惯容对阻尼单元变形的放大效应外，杠杆可实现对阻尼单元的二次放大作用，继续增大阻尼器行程，可弥补传统体内拉索体系斜向布置的缺陷，使具有不同拉索布置角度的CLRID对塔架具有相同的位移响应控制效果。同时，通过参数优化分析，CLRID拉索布置角度可控制在30°～50°，杠杆放大系数可控制在1～2。当确定目标减振比后，基于输电塔塔架性能的优化设计方法可使CLRID实现精准的风振控制。
- 输电塔 /
- 阻尼器 /
- 拉索-杠杆系统 /
- 惯容 /
- 随机响应 /
- H₂优化设计 /
- 风振控制
Abstract: As a high-rise space steel structure controlled by wind, the wind vibration control technology is one of the important technical means to reduce the risk of wind damage and tower collapse of the transmission tower. Aiming at the problem of inadequate adaptability of existing wind vibration control technology for transmission towers, a cable-lever rotation inerter system and its optimization design method that can be installed in the body of self-supporting transmission towers are proposed. Firstly, the motion control equations of a typical transmission tower sections with a cable-lever rotation inerter damper (CLRID) are established, and then the parameters of CLRID are analyzed based on the fluctuating wind load characteristics for vibration control. Finally, the parameters of CLRID are optimized in considering the performance demand of the tower, and the optimal designed parameters of CLRID are obtained under a fixed installed angle. Our results show that, in addition to the amplification effect of inerter on the deformation of damping element, the secondary amplification effect of damping element in RID can be realized by lever mechanism, and continue to increase the deformation of damper, which can make up for the shortcomings of oblique installation of traditional internal cable system, so that CLRID with different cable angles has the same control effect of displacement responses of tower. At the same time, through parameter optimization analysis, it is recommended that the installed angle of cable of CLRID can be controlled between 30°～ 50°, and the lever amplification factor can be controlled between 1～2. When the target vibration mitigation ratio is determined, wind-induced vibration control of the transmission tower can be achieved precisely by the optimal design method of CLRID based on the performance demand.
- Transmission tower /
- Damper /
- Cable-lever system /
- Inerter /
- Stochastic response /
- H₂optimization /
- Wind-induced vibration control

HTML全文

图 1 惯容单元力学模型

Figure 1. Mechanical model of an inerter element

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图 2 旋转惯容阻尼器（RID）及力学模型

Figure 2. Conceptual and mechanical model of a RID

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图 3 拉索旋转惯容阻尼器（CRID）及力学模型

Figure 3. Conceptual and mechanical model of a CRID

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图 4 输电塔CLRID系统布置及简化模型

Figure 4. Layout conceptual model and mechanical model of tower section with CLRID

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图 5 不同刚度比下位移减振比J等值线图

Figure 5. Contour plots of J with different stiffness ratio

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图 6 不同惯质比下位移减振比J等值线图

Figure 6. Contour plots of J with different inerter-mass ratio

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图 7 不同阻尼比下位移减振比J等值线图

Figure 7. Contour plots of J with different damping ratio

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图 8 布置CLRID的塔架位移传递函数曲线

Figure 8. Frequency‐domain transfer function curves of tower section with CLRID

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图 9 脉动风功率谱曲线

Figure 9. Power spectrum curve of fluctuating wind

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图 10 塔架位移及相位

Figure 10. Displacement responses and phase portraits of tower section

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图 11 塔架位移归一化功率谱密度及阻尼器滞回曲线

Figure 11. PSD of displacement responses of tower section and hysteresis loops of CLRID and VD

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表 1 不同布置夹角下CLRID最优设计参数

Table 1. Optimal designed parameters of CLRID with different angle

θ μ ζ κ α

0°（TVMD） 0.036 3 0.014 1 0.062 0 1.000 0
30° 0.056 5 0.014 9 0.115 9 1.286 5
45° 0.090 4 0.016 8 0.205 1 1.877 5
60° 0.125 6 0.018 5 0.369 0 3.121 4

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表 2 不同目标减振比下CLRID最优设计参数

Table 2. Optimal designed parameters of CLRID with different J_t

J_t μ ζ κ α

0.7 0.056 1 0.007 7 0.161 3 1.727 5
0.6 0.091 8 0.017 1 0.223 4 1.759 9
0.5 0.144 0 0.032 9 0.380 1 1.835 4

下载: 导出CSV

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