The results of the Proctorsville project showed that our understanding of the mechanics of pile driving—and of the load transfer mechanism between pile and soil during and after installation—left a great deal to be desired. The solution to the problem was to instrument the pile driving process. Such an effort was documented in the 1908 … Continue reading Goodrich (1908): The First Instrumented Pile?
Most people in our industry have seen the drawings shown above. They were featured (in much better quality, I must admit) in Chellis' Pile Foundations (1961), which was the book on the subject at the time and for many years afterward. Their source, however, has been something of a mystery, but now that mystery can … Continue reading The Source of Those “Primitive Pile Driving” Drawings
It's my custom to review papers which cite my own work. This pair of papers, whose lead author is Tu Yuan from Zhejiang Sci-Tech University in Hangzhou, China, is interesting because it take an approach whose basic concept goes back a long way in pile dynamics and which needed some basic advancement. The two papers … Continue reading Comments on “Nonlinear fictitious-soil pile model for pile high-strain dynamic analysis” and “Fictitious soil pile model for dynamic analysis of pipe piles under high strain conditions”
As we saw in the previous post, Sanders' Formula wasn't the last word in dynamic formulae, and neither were Weisbach's. Faced with this proliferation, the U.S. Army Corps of Engineers put together the document Pile Foundations and Pile-Driving Formulae, Circular No. 17, Office of the Chief of Engineers, U.S. Army. It was dated 28 November … Continue reading Putting Dynamic Formulae to the Test: the Proctorsville Fort Project
This is yet another paper which cited my work, in this case the ZWAVE paper. Once again I'm not sure why they picked this one; it's probably because I explored a soil model based on that of Randolph and Simons (1986), which they also cited and discussed. I came back to models like this in … Continue reading Comments on “A novel soil reaction model for continuous impact pile driving”
He's gone home: Dr. Lee Leon Lowery, Jr., known as “L3” to his students, passed away on February 28, 2024. He spent his lifetime learning from the world around him and in return teaching the world around him.... Dr. Lowery was a man of great intellect, generosity, and wit. He gave of himself wholly and … Continue reading RIP Lee L. Lowery, Jr.
More Resources Foundation Design and Analysis: Deep Foundations, Driven Pile Bearing Capacity (for ASD Methods) Foundation Design and Analysis: AASHTO LRFD Method Design and Construction of Driven Pile Foundations, 2016 Edition. This topic is spread out between the two volumes. Overview Engineers have always designed structures with uncertainty in mind, thus it is not permissible … Continue reading Driven Pile Design: ASD and LRFD Methods
MORE RESOURCES Foundation Design and Analysis: Deep Foundations, Pile Dynamics Design and Construction of Driven Pile Foundations, 2016 Edition. The second volume covers this topic. It should be obvious that the state of our predictive methods should make verification necessary for deep foundations, and that is certainly the case. One type of verification already discussed … Continue reading Driven Pile Design: Inverse and Verification Methods
More Resources Foundation Design and Analysis: Deep Foundations, Pile Dynamics Design and Construction of Driven Pile Foundations, 2016 Edition. The second volume covers this topic. Overview Now we come to the topic that was the genesis of this and the related sites: pile dynamics. There's quite a lot on the subject, so an extensive review … Continue reading Driven Pile Design: Wave Equation Analysis
More Resources Foundation Design and Analysis: Deep Foundations, Lateral Loading of Piles Design and Construction of Driven Pile Foundations, 2016 Edition. Having looked at axial loads on driven piles, we come to the subject of lateral loads on driven piles. Deep foundations in general are more suitable for lateral loads than shallow ones, so this … Continue reading Driven Pile Design: Lateral Loads on Piles
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