Download e-book for kindle: Application of Stress-Wave Theory to Piles: Quality by J. Beim, S. Niyama

By J. Beim, S. Niyama

ISBN-10: 0585470006

ISBN-13: 9780585470009

ISBN-10: 9058091503

ISBN-13: 9789058091505

This paintings collates the subjects mentioned within the 6th foreign convention on land and offshore piling. It covers issues reminiscent of: wave mechanics and its program to pile mechanics; using gear and advancements; and pile integrity and occasional pressure dynamic trying out.

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Additional resources for Application of Stress-Wave Theory to Piles: Quality Assurance on Land and Offshore Piling

Example text

However, in most other cases, computed pile capacity differs substantially from results of static or dynamic tests. Existing dynamic models of the pile-soil system mainly use a velocity-dependent approach for calculation of the dynamic resistance as a damping component of the total resistance during pile driving. There are various linear and nonlinear relationships between the damping component and the velocity. For certain pile capacity, the dynamic resistance depends only on pile velocity and the damping coefficient.

It is necessary to point out that a ratio of DT/SLT or vice versa, taken for arbitrary time between compared tests, is not a verification of dynamic testing results. It is well-known that dynamic testing methods yield the real static capacity of piles at the time of testing, Rausche et al. (1985). This is not a predicted value. Moreover, the static capacity from SLT is considered as a unique standard for assessment of dynamic testing results. Unfortunately, that is a major error. As a matter of fact, pile capacity from Static Loading Tests is a function of time and the so-called actual static capacity from SLT is not a constant value.

From the analyzed results of twelve dynamic loading tests on rock-socketed piles, the behaviors of shaft resistance of the socket and toe resistance are discussed, a relationship of shaft resistance of socket to the length of socket and the rock strength and the construction of piles is presented. And the parameters of dynamic loading tests are estimated. Some suggestions for dynamic loading tests of rock-socketed are made to analyze the bearing capacity. 1 INTRODUCTION vanced in this paper. Through analyzed the results of CAPWAP, the bearing behaviors of rocksocketed pile are discussed and a method is given to determine the bearing capacity.

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Application of Stress-Wave Theory to Piles: Quality Assurance on Land and Offshore Piling by J. Beim, S. Niyama

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