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Download Application of Stress-Wave Theory to Piles: Quality by J. Beim, S. Niyama PDF

By J. Beim, S. Niyama

This paintings collates the subjects mentioned within the 6th foreign convention on land and offshore piling. It covers subject matters equivalent to: wave mechanics and its software to pile mechanics; riding gear and advancements; and pile integrity and occasional pressure dynamic trying out.

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

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Svinkin VibraCoizsult, Cleveland, Ohio, USA ABSTRACT: Knowledge of pile capacity as a function of time is important for proper performance of pile foundations. This paper shows the advantages of the dynamic methods in determining pile capacity and points out the necessity of considering the time effect for correct assessment of the accuracy of dynamic methods. The prediction of pile capacity in pre-driving wave equation analysis can be made by the use of variable damping as a function of time. Pile capacity obtained from a static loading test cannot be accepted as a unique standard because the static loading test yields the pile capacity at the time of test only, due to the consolidation phenomenon.

Accurate and reliable determination of pile capacity is very important for design, construction and reliability of pile foundations. Static analysis and the static loading test are traditionally used for calculation and verification of pile capacity. Contemporary dynamic methods have advances in evaluation of the hammer-pile-soil system and in data acquisition during pile driving and restrikes. Therefore during the two last decades, dynamic methods have become an integral part of pile capacity prediction and measurement for numerous projects.

Almost no soil resistance was mobilized over the bottom quarter of the pile. , the soil resistance mobilized on a particular pile segment is assumed to be the larger of the actual resistance mobilized or the resistance mobilized during continuous driving. 6 MN), as shown in Fig. 8. 7 MN). 3. CASE HISTORY NO. 2 Our second case history is for a series of redrive tests performed with a hammer that was not quite large enough to mobilize the full soil resistance. -diameter open-ended pipe piles were driven to 383-R (117-m) penetration with a Menck MRBS 8000 hammer.

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