| 近场地震动下偏心结构的减震控制研究 |
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| 引用本文： | 殷伟希,谭平,周福霖,吴曼林,王昊.近场地震动下偏心结构的减震控制研究[J].震灾防御技术,2010,5(2):199-207. |
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| 作者姓名： | 殷伟希 谭平 周福霖 吴曼林 王昊 |
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| 作者单位： | 广州大学减震控制与结构安全国家重点实验室,广州,510405 |
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| 基金项目： | 国家自然科学基金重点项目，国家教育部留学回国人员科研启动基金号 |
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| 摘 要： | 本文选用远场宽频地震Kanai-Tajimi模型与近场地震He-Agrawal速度脉冲模型,对现有的典型近场地震记录进行了非线性数值拟合。通过调整脉冲分量与宽频分量的比值,得到了不同脉冲分量的地震波,分析了在合成近场地震波作用下,设置粘滞阻尼器时偏心结构的动力反应,并与未设置阻尼器时结构的地震响应进行了对比,同时也对能反映结构偏心特性的参数进行了分析研究。通过数值模拟与仿真分析,得到了一些对实际工程设计有意义的结论。
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| 关 键 词： | 偏心结构 近场地震波 速度脉冲模型 粘滞阻尼器 偏心特性 |
| 收稿时间： | 2009/11/22 0:00:00 |
Seismic Response Control of Eccentric Structure Subjected to Near-Field Ground Motions |
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| Yin Weixi,Tan Ping,Zhou Fulin,Wu Manlin,Wang Hao.Seismic Response Control of Eccentric Structure Subjected to Near-Field Ground Motions[J].Technology for Earthquake Disaster Prevention,2010,5(2):199-207. |
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| Authors: | Yin Weixi Tan Ping Zhou Fulin Wu Manlin Wang Hao |
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| Institution: | Earthquake Engineering & Research Center, Guangzhou University, Guangzhou 510405, China;Earthquake Engineering & Research Center, Guangzhou University, Guangzhou 510405, China;Earthquake Engineering & Research Center, Guangzhou University, Guangzhou 510405, China;Earthquake Engineering & Research Center, Guangzhou University, Guangzhou 510405, China;Earthquake Engineering & Research Center, Guangzhou University, Guangzhou 510405, China |
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| Abstract: | In this paper, Kanai-Tajimi far-field broad-band model and He-Agrawal near-filed velocity pulse model are selected to conduct nonlinear numerical simulation of typical near-filed records, in which near-filed ground motions are obtained by adjusting the ratio of random broadband component and pulse component. Viscous dampers are considered to reduce the near-field effects, and the dynamic responses of eccentric structures with and without viscous dampers effects of near-filed ground motions are investigated systematically. The factors reflecting the characteristics of structural eccentricity are calculated too. Some significant conclusions can be obtained, which are helpful for designing eccentric building structures. |
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| Keywords: | Eccentric structure Near-field ground motion Velocity pulse model Viscous damper Characteristics of eccentricity |
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