| 水平激振下波阻板主动隔振试验与数值计算 |
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| 引用本文： | 李宁,高广运,郑建国. 水平激振下波阻板主动隔振试验与数值计算[J]. 地下空间与工程学报, 2010, 6(1) |
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| 作者姓名： | 李宁 高广运 郑建国 |
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| 作者单位： | 1. 同济大学岩土及地下工程教育部重点实验室,上海,200092
2. 机械工业勘察设计研究院,西安,710043 |
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| 基金项目： | 国家自然科学基金资助项目(50878155,50678128,50538010);;上海市重点学科建设资助项目(B308) |
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| 摘 要： | 通过现场试验对水平激振下层状地基中混凝土波阻板的实际隔振效果及波阻板埋深对隔振效果的影响进行了研究,并将实测位移振幅随距离变化曲线与以薄层法格林函数作为基本解的半解析边界元计算结果进行了比较。研究结果表明,水平激振情况下,具有合理埋深的混凝土波阻板可以有效减少振动输出,获得理想的隔振效果;减小波阻板埋深是提高隔振效果的一项有效措施;半解析边界元法的计算结果与实测结果较为一致,证明了该数值方法的可靠性。
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| 关 键 词： | 波阻板 埋深 隔振 现场试验 半解析边界元法 |
Field Experimental and Numerical Study on Active Vibration Isolation by WIB under Horizontal Loading |
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| Li Ning,Gao Guangyun,Zheng Jianguo. Field Experimental and Numerical Study on Active Vibration Isolation by WIB under Horizontal Loading[J]. Chinese Journal of Underground Space and Engineering, 2010, 6(1) |
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| Authors: | Li Ning Gao Guangyun Zheng Jianguo |
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| Affiliation: | 1.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education;Tongji University;Shanghai 200092;China;2.China Jikan Geotechnical Institute;Xi'an 710043;China |
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| Abstract: | In this paper,an investigation was addressed to evaluate the actual vibration isolation effect of concrete wave impeding block(WIB) and the influence of WIB embedded depth on the vibration screening effect in different directions under the continuous horizontal loading.Furthermore,the displacement of measuring points were predicted with a semi-analytical boundary element method(BEM) and validated by the measured records.It was revealed that a concrete WIB with a reasonable embedded depth was able to decreas... |
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| Keywords: | wave impeding block embedded depth vibration isolation field experiment semi-analytical boundary element method |
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