大型渡槽隔震体系结构动力特性的试验研究 |
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作者姓名: | 夏富洲 宋一乐 李静 姚雄 |
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作者单位: | 1. 武汉大学水资源与水电工程科学国家重点实验室,武汉,430072 2. 武汉大学土木建筑工程学院,武汉,430072 3. 南水北调中线干线工程建设管理局,北京,100038 |
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基金项目: | "十一五"国家科技支撑计划项目"南水北调工程若干关键技术研究与应用"资助 |
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摘 要: | 为解决南水北调大型渡槽工程中的抗震问题,进行了模拟地震振动台试验研究,分析了减震支座水平刚度、槽内水体及场地对渡槽结构动力特性的影响。研究结果表明,减震支座的水平刚度越小、槽内水体质量越大,渡槽结构自振周期越长,从而达到减震效果,提高渡槽的抗震能力。此外,场地对减震效果影响显著。
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关 键 词: | 大型渡槽 减震支座 自振周期 |
Test Research on Dynamic Characteristics of Vibration Isolation System for Large-scale Aqueduct |
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Authors: | XIA Fu-zhou SONG Yi-le LI Jing YAO Xiong |
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Abstract: | In order to resolve the vibration problems of large-scale aqueduct in South-to-North Water Transfer Project, shaking table model tests of simulating earthquake action have been done, and the effects of horizon rigidity of vibration absorption bearing; waters in the flumes and field on aqueduct dynamic characteristics have been analyzed. The results indicate that the smaller horizon rigidity of vibration absorption bearing is; the bigger mass of waters in the flumes is, the longer natural period of vibration of aqueduct is. And so the effect of vibration absorption is got, and the vibration-resistant performance of aqueduct can be improved. In addition, the field has remarkable influence on the effect of vibration ab-sorption. |
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Keywords: | large-scale aqueduct vibration absorption bearing natural period of vibration |
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