| 埋置基础扭转振动的实用化计算与试验的对比 |
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| 引用本文： | 刘志久,尚守平,徐建.埋置基础扭转振动的实用化计算与试验的对比[J].岩土力学,2011,32(12):3618-3622. |
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| 作者姓名： | 刘志久 尚守平 徐建 |
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| 作者单位： | 1.湖南大学 土木工程学院，长沙 410082；2.中南大学 土木工程学院，长沙 410083；3.中国机械工业集团公司，北京 100080 |
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| 基金项目： | 中国工程建设标准化协会课题 |
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| 摘 要： | 根据弹性半空间理论及基础振动试验和数值计算的最新成果，采用方程对等法推演出埋置块体基础扭转振动的实用化计算公式。在20 m×10 m×4 m土坑内采用摆锤分别对底面尺寸为0.5 m×0.5 m和1.0 m×0.5 m的埋置块体基础施加冲击荷载，使其发生扭转自由振动，并对其振动响应进行采集，将试验结果与采用实用化计算公式的计算结果进行了比较。该公式具有概念明确，计算简单的优点，对于任意形状，任意埋置状况的动力设备块体基础都适用，其结果对于结构工程的地震响应计算具有参考意义。
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| 关 键 词： | 块体基础 扭转振动 弹性半空间理论 方程对等法 动力响应 |
| 收稿时间： | 2011-06-23 |
Comparison of practical calculation for torsional vibration of embedded foundations and experiments |
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| LIU Zhi-jiu,SHANG Shou-ping,XU Jian.Comparison of practical calculation for torsional vibration of embedded foundations and experiments[J].Rock and Soil Mechanics,2011,32(12):3618-3622. |
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| Authors: | LIU Zhi-jiu SHANG Shou-ping XU Jian |
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| Institution: | 1. College of Civil Engineering, Hunan University, Changsha 410082, China; 2. College of Civil Engineering, Central South University, Changsha 410083, China; 3.Machine Building Group Corporation of China, Beijing 100080, China |
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| Abstract: | The practical calculation formulas for torsional vibration of embedded lump foundations were established based on the elastic half-space theory and state-of-the-art results of comprehensive experimental and numerical calculation by using equation equivalence method. Exerting impulsive load to embedded lump foundation of 0.5 m×0.5 m and 1.0 m×0.5 m with pendulum hammer to make foundations happen free torsional vibration in pit of 20 m×10 m×4 m respectively, collecting its vibration response, the results of experiment are compared to the results of calculation performed with practical calculation formulas. The advantages of the formulas are clear concept and simple calculation. It is practical for power equipment lumped foundation of arbitrarily shaped and arbitrarily embedded lumped foundations. It has referential significance to the calculation of seismic response of structural engineering. |
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| Keywords: | lump foundation torsional vibration elastic half-space theory equation equivalence method dynamic response |
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