Experimental and Analytical Approaches on the Safety of Earth Structures in occasion to Earthquakes

地震时地球结构安全性的实验和分析方法

基本信息

  • 批准号:
    15580210
  • 负责人:
  • 金额:
    $ 1.66万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2003
  • 资助国家:
    日本
  • 起止时间:
    2003 至 2005
  • 项目状态:
    已结题

项目摘要

Earthquake resistant design plays an important role in case of maintaining the earth structures. In this research, we conducted the in-situ micro tremor measurements and the elastic wave ones on the Kojima Bay Reclamation Dike and the embankments of the repaired earth dams at Awaji Island, in order to obtain the first predominant frequencies, i.e., the characteristic values of the earth structures. Converting the observed time series to the spectral regions by FFT techniques in micro tremor measurements, we obtained the peak frequencies of the earth structures from H/V spectra and compared those with the estimated values from S-wave velocities obtained from the elastic wave measurements. Moreover, we measured the ground sites at Tarui town in Gifu Prefecture where the buried irrigation pipelines passed through. The results are summarized as follows :(1)At Kojima Bay Reclamation Dike, it is shown that the peak frequencies obtained from micro tremor measurements are about 10% less than t … More hose estimated from PS downhole measurements; it means there exists the weak deposits deeper than those conducted by PS measurements.(2)At Idenoshiri Reservoir which stands on the shallow valley, repairing with the soil-cement method on the base, the predominant frequency is about the same both obtained from H/V spectra and estimated from S-wave velocities which are obtained from the refraction method employing 1/4 wave length theory.(3)At Origatani Reservoir which stands on the deep valley, the predominant frequency obtained from micro tremor measurements is about 15% less than that from the refraction methods employing the wedge theory; it means there exists the weak deposits below the embankments.(4)At ground sites where the buried irrigation pipelines passed through, it has the same tendency to the predominant value above (1)(3).In conclusion, the predominant frequencies obtained from H/V spectra represent the characteristic values in ground-structure system, and it clarifies that there is a need to execute the earthquake response analyses including the surface soil layer on the rigid base. Less
抗震设计在维护土结构方面发挥着重要作用。在本研究中,我们对儿岛湾填海堤和淡路岛修复土坝的堤坝进行了现场微震测量和弹性波测量。 ,为了获得第一主频,即地球结构的特征值,通过微震测量中的FFT技术将观测到的时间序列转换到频谱区域,我们得到此外,我们还测量了岐阜县垂井镇埋地灌溉设施的地面位置。结果总结如下:(1)在儿岛湾围垦堤,微震测量得到的峰值频率比PS井下测量估计的峰值频率低约10%;存在比PS测量更深的软弱沉积物。(2)在浅谷地的井登尻水库,采用水泥土法对基底进行修复,从H/V得到的主频大致相同。光谱并根据1/4波长理论的折射法获得的横波速度进行估计。(3)在位于深谷的Origatani水库,从微观获得的主频率震颤测量值比楔形理论折射法测量值小15%左右,说明路堤下方存在软弱沉积物。(4)在埋地灌溉管道穿过的地面部位,也有同样的趋势。上述(1)(3)的主频值。综上所述,从H/V谱获得的主频代表了地面结构系统的特征值,这说明需要进行地震响应分析,包括表土层于刚性底座较少。

项目成果

期刊论文数量(26)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
波の分散効果による伝播速度の変化について
关于波色散效应引起的传播速度的变化
  • DOI:
  • 发表时间:
    2005
  • 期刊:
  • 影响因子:
    0
  • 作者:
    田代 正一;Shoichi Tashiro;田代 正一;田代 正一;Shoichi Tashiro;清水 英良;Shimizu Hideyoshi;金 紅藍;Kim Honglanjin;清水 英良;清水 英良
  • 通讯作者:
    清水 英良
コスト最小理論に基づく液状化対策工の最適設計
基于成本最小化理论的液化对策优化设计
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    清水英良;西村伸一;西村眞一;西村 伸一
  • 通讯作者:
    西村 伸一
Estimation on the Dynamic Characteristics of Earth Structures by the In-Situ Vibration Experiments-Micro tremor Measurement and Refraction Method-
通过原位振动实验估计地球结构的动力特性-微震测量和折射法-
  • DOI:
  • 发表时间:
    2007
  • 期刊:
  • 影响因子:
    0
  • 作者:
    田代 正一;Shoichi Tashiro;田代 正一;田代 正一;Shoichi Tashiro;清水 英良;Shimizu Hideyoshi
  • 通讯作者:
    Shimizu Hideyoshi
児島湾干拓締切堤防の振動特性-常時微動観測による固有振動数の同定-
儿岛湾填海堤的振动特性 - 通过连续微震观测识别固有频率 -
  • DOI:
  • 发表时间:
    2005
  • 期刊:
  • 影响因子:
    0
  • 作者:
    田代 正一;Shoichi Tashiro;田代 正一;田代 正一;Shoichi Tashiro;清水 英良;Shimizu Hideyoshi;金 紅藍;Kim Honglanjin;清水 英良
  • 通讯作者:
    清水 英良
児島湾千拓締切堤防の振動特性-常時微動観測による固有振動数の同定-
小岛湾Sentaku围堰的振动特性 - 通过连续微震观测识别固有频率 -
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SHIMIZU Hideyoshi其他文献

SHIMIZU Hideyoshi的其他文献

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{{ truncateString('SHIMIZU Hideyoshi', 18)}}的其他基金

Estimation of dynamic properties on irrigation tank by using in-situ vibration test and evaluation of earthquake resistance.
利用现场振动试验估算灌溉水箱动力特性并评价抗震性能。
  • 批准号:
    25450357
  • 财政年份:
    2013
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Estimation of internal properties of irrigation pond and earthquake resistance by surface wave method
面波法估算灌溉池塘内部性质及抗震能力
  • 批准号:
    21580297
  • 财政年份:
    2009
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of the methods of safety evaluation in land improvement facilities
土地改良设施安全评价方法的开发
  • 批准号:
    11556042
  • 财政年份:
    1999
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Earthquake resistant reliable design on agricultural hydraulic structures.
农业水工建筑物抗震可靠设计
  • 批准号:
    06660299
  • 财政年份:
    1994
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

相似海外基金

Investigation of the strength and consolidation characteristics of Ariake clay grounds and stability evaluation of the reclamation dike in a raising embankment.
有明粘土地基的强度和固结特性研究以及抬高路堤围垦堤的稳定性评价。
  • 批准号:
    24580357
  • 财政年份:
    2012
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Study on the reclamation with double dike system on mudflat -comparison between Japan and Korea-
滩涂双堤围垦研究-日韩比较-
  • 批准号:
    23510047
  • 财政年份:
    2011
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Developing Process of Reclamation and Sustainability of Multiple Subsistence
复垦发展进程与多元生存的可持续性
  • 批准号:
    15520502
  • 财政年份:
    2003
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Investigations of the Residual Settlement of Reclamation Dikes and its Prediction Mmethods for the Introduction of Performance Based Design to the Maintenance of Reclamation Dikes
填海堤残余沉降的研究及其预测方法在填海堤维护中引入基于性能的设计
  • 批准号:
    15580215
  • 财政年份:
    2003
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Investigation of the Physical, Chemical and Mechanical Properties of Ariake Clay under the Reclamation Dick and Analysis of the Behavior of the Reclamation Dike by Finite Element Method
围垦堤下有明粘土的物理、化学和力学性能研究及围垦堤行为的有限元分析
  • 批准号:
    13660245
  • 财政年份:
    2001
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
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