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Abstract

The control of offshore piling has increased in importance with the increased cost and size of such operations. The Piling Research Group has been involved in the monitoring and analysis of dynamic and static piling situations for over a decade.

The performance of a piling hammer can be assessed with knowledge of its impact velocity, the cushion stiffness and coefficient of restitution. Previous work has identified these parameters from the hammer signature of measured strain and acceleration signals.

A monitoring system has been developed that obtains measured signals and analyses the hammer signature to derive the hammer parameters. The system is portable and works in real time. The method of analysis is a non-linear optimisation process that compares the measured signals with wave equation signals using a sum of least square's criterion.

Work is continuing to develop a similar optimisation process for identifying the soil resistance at time of driving from measured signals.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 2/3 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON CIVIL AND STRUCTURAL ENGINEERING COMPUTING Edited by: B.H.V. Topping Paper XXVIII.7 Monitoring Pile Hammer Performance T.J. Poskitt, I.J. Solomon and G. Ward Piling Research Group, Queen May College, University of London doi:10.4203/ccp.2.28.7 purchase the full-text of this paper Full Bibliographic Reference for this paper T.J. Poskitt, I.J. Solomon, G. Ward, "Monitoring Pile Hammer Performance", in B.H.V. Topping, (Editor), "Proceedings of the Second International Conference on Civil and Structural Engineering Computing", Civil-Comp Press, Edinburgh, UK, pp 381-385, 1985. doi:10.4203/ccp.2.28.7 Abstract The control of offshore piling has increased in importance with the increased cost and size of such operations. The Piling Research Group has been involved in the monitoring and analysis of dynamic and static piling situations for over a decade. The performance of a piling hammer can be assessed with knowledge of its impact velocity, the cushion stiffness and coefficient of restitution. Previous work has identified these parameters from the hammer signature of measured strain and acceleration signals. A monitoring system has been developed that obtains measured signals and analyses the hammer signature to derive the hammer parameters. The system is portable and works in real time. The method of analysis is a non-linear optimisation process that compares the measured signals with wave equation signals using a sum of least square's criterion. Work is continuing to develop a similar optimisation process for identifying the soil resistance at time of driving from measured signals. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £90 +P&P)
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