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首页> 外文会议>Sixth International Conference on the Application of Stress-Wave Theory to Piles, Sep 11-13, 2000, Sao Paulo, Brazil >Correlative study of Smith damping coefficient and SPT blow count
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Correlative study of Smith damping coefficient and SPT blow count

机译：Smith阻尼系数与SPT打击数的相关性研究

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摘要

The accuracy and consequently the usefulness of wave equation analysis in pile driving problem are largely hinged upon accurate input of wave equation soil parameters that are representative of the soil conditions at the site. Since Smith model parameters have been used in most wave equation analysis techniques, emphasis is given to the development of algorithms to determine Smith model parameters from static ultimate soil resistance R_s (including shaft resistance f_u and toe resistance R_u), quake Q and damping J. In this paper, a methodology for using SPT values to determine Smith model parameters is developed. The approach used herein to develop useful correlations consists of a number of consecutive steps, where the static soil resistance is first determined, soil quake Q evaluated for a variety of soil types, and finally, the damping coefficient J is determined by computer simulation of the standard penetration test with the help of GRLWEAP program. The results obtained indicate the usefulness of the adopted method when compared to existing cases analyzed by the CAPWAP.
机译：波动方程分析在打桩问题中的准确性以及因此的实用性在很大程度上取决于波动方程土壤参数的准确输入，这些参数代表了现场的土壤状况。由于史密斯模型参数已在大多数波动方程分析技术中使用，因此着重开发了从静态极限土壤阻力R_s（包括竖井阻力f_u和趾趾阻力R_u），地震Q和阻尼J确定史密斯模型参数的算法。在本文中，开发了一种使用SPT值确定Smith模型参数的方法。本文用于建立有用相关性的方法包括多个连续步骤，首先确定静态土壤阻力，评估各种土壤类型的土壤地震Q，最后通过计算机模拟确定阻尼系数J。在GRLWEAP程序的帮助下进行标准渗透测试。与CAPWAP分析的现有案例相比，所获得的结果表明了所采用方法的有效性。

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