WAVE EQUATION PARAMETERS FROM NUMERICAL SIMULATION TECHNIQUES

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概要

• 論文の詳細を見る

• Wave equation analysis and dynamic pile testing have been generally accepted by the engineering profession as effective techniques for construction control of driven piles. The accuracy of wave equation analysis, however, is dependent upon the assumed hammer performance and the correct input of dynamic soil-pile interaction model parameters. A host of proprietary numerical simulation programs have been developed to facilitate the calculation of pile capacity and pertinent soil-pile interaction model parameters based on the measured dynamic signals (force and velocity wave forms measured at a point near the pile top) during each hammer blow (usually at the end of initial driving or the beginning of re-strike). The numerical simulation techniques involve the adjustment of the model parameters based on the matching of the calculated signal with a reference signal. Either dynamic force or kinetic velocity is imposed at the top as a stimulus, while the other signal is used as a reference for matching purpose. In this paper, a new numerical simulation algorithm, utilizing both force and velocity as the given boundary stimuli, has been developed. The proposed algorithm differs from the existing numerical programs mainly in that it is cast in a system in which the signal matching process is performed at several points along the pile shaft. In this way, the soil-pile interaction model parameters can be more accurately determined. Furthermore, the proposed algorithm can determine the shaft resistance and toe resistance separately, thus helping the determination of the uplift capacity of driven piles.

• 1994-06-15

著者

• Liang Robert

  Department Of Civil Engineering The University Of Akron

• SHENG YUANJING

  Erika James Company, Inc.

• Sheng Yuanjing

  Erika James Company Inc.

関連論文

• WAVE EQUATION PARAMETERS FROM NUMERICAL SIMULATION TECHNIQUES
• THREE CASE STUDIES FOR SHORT TERM STABILITY OF SOFT CLAY DEPOSITS

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