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首页> 外文会议>World conference on earthquake engineering;WCEE >DEVELOPMENT OF DESIGN RESPONSE SPECTRAL FOR CENTRALKHARTOUM, SUDAN
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DEVELOPMENT OF DESIGN RESPONSE SPECTRAL FOR CENTRALKHARTOUM, SUDAN

机译：苏丹中央医院设计响应谱的开发

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摘要

Geological and geotechnical data indicated that the subsoil conditions at Central Khartoum arecharacterized by alluvial deposits underlain by Nubian Sandstone at a depth of 25 m. The alluvial depositslocally known as Gezira formations consist of clays grading into silt and sand with depth. Macro seismiczonation of Sudan and its vicinities, developed by the authors, gave the ground acceleration at the bedrock surface. The effect of alluvial deposits at Central Khartoum on propagation of seismic motionparameters to the ground surface is investigated in this study. Correlations are proposed for pertinentcyclic soil properties such as shear modulus, damping, and shear wave velocity. The Equivalent-LinearEarthquake Response Analyses (EERA) Model developed by Bardet et al (2000) was used to study theeffect of local soil conditions on ground motion parameters. In absence of strong motion records inKhartoum, available strong motion records worldwide are used. Plots showing the time histories of groundmotion parameters at the ground surface are obtained. The results indicated amplification of groundmotion of up to 4.93. The predicted fundamental period of soils is about 0.5 seconds which is typical forthese types of soils. The maximum spectral acceleration varied form 0.76 to 0.95 g. For design purposes aresponse spectra curve is proposed.
机译：地质和岩土数据表明，喀土穆中部的地下土壤特征是由努比亚砂岩在25 m的深度下的冲积层形成的。冲积沉积物在当地被称为Gezira地层，由高深的泥质和粉砂组成。作者开发的苏丹及其周边地区的宏观地震带给了基岩表面地面加速度。本研究研究了喀土穆中部冲积物对地震运动参数向地面传播的影响。提出了相关的循环土壤特性的相关性，例如剪切模量，阻尼和剪切波速度。 Bardet等人（2000年）开发的等效线性地震响应分析（EERA）模型用于研究当地土壤条件对地震动参数的影响。在喀土穆没有强力运动记录的情况下，使用了全球可用的强力运动记录。获得了显示地面上地面运动参数的时间历程的图。结果表明，地面运动的放大率高达4.93。预测的土壤基本周期约为​​0.5秒，这是典型的土壤类型。最大光谱加速度在0.76至0.95 g之间变化。为了设计目的，提出了响应光谱曲线。

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  • 会议地点 Vancouver(CA);Vancouver(CA)
  • 作者

    Yahia E-A. MOHAMEDZEIN; Jamal A. ABDALLA; Abu Bakr ABDELWAHAB;

  • 作者单位

    Department of Civil Engineering Sultan Qaboos P. O. Box 33 Al-Khod 123 Sultanate of Oman.Email: yahiaz@squ.edu.om;

    Department of Civil Engineering American University at Sharjah Sharjah UAE.Email: jabdalla@aus.ac.ae;

    Department of Civil Engineering University of Khartoum Khartoum Sudan;

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