With a few preliminaries out of the way, we can proceed to discuss the new TAMWAVE routine, which can be found here.
TAMWAVE stands for Texas A&M Wave Equation. The TTI wave equation was developed at Texas A&M in the late 1960’s and early 1970’s, and was a successor to Smith’s original wave equation program. In reality this is more than a wave equation program; it is a driven pile analyser which, in addition to the wave equation program, analyses the static performance of a driven pile for both axial and lateral loads. It is not intended to be used on actual projects, but as an educational tool for students. Most of the software in current use is expensive, and predecessors such as SPILE, WEAP87 or COM624 are hard to use (they’re DOS programs) or methodological obsolescence issues. (With WEAP87, there are not as…
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It is routine in soil mechanics to attempt to use continuum mechanics/theory of elasticity methods to analyse the stresses and strains/deflections in soil. We always do this with the caveat that soils are really not linear in their response to stress, be that stress axial, shear or a combination of the two. In the course […] … Continue reading Relating Hyperbolic and Elasto-Plastic Soil Stress-Strain Models
With this post we begin to discuss our “other” project: the TAMWAVE project. It’s been around a long time but is now being revised. The concept is to afford students a method of getting acquainted with several aspects of computer-aided driven pile design, including the following: Estimating axial capacity of the pile; Estimating the axial […] … Continue reading TAMWAVE: Pile Toe Resistance, and Some More on Pile Shaft Resistance — vulcanhammer.net
After a summer of eclipses and hurricanes, we're pleased to announce that vulcanhammer.info has finally moved to its new platform as of yesterday. Click here and check out what we have to offer. Most of the content has gone with the site; we've added many photographs and used the transition to correct many of the … Continue reading We’ve Moved At Last, But Took the Online Pile Routines Somewhere Else
On our Engineering at Vulcan page, we posted this general arrangement of the Vulcan #2 dated 1887. Little did we suspect that we'd need that drawing, but then these photos from Crofton Diving of Portsmouth, VA, arrived: The hammer in question is Vulcan S/N 116, originally sold to the Florida East Coat Railroad (not far … Continue reading The Best Way to Celebrate Your 120th Birthday is With a New Slide Bar Part
This section of vulcanhammer.info is about the drivability and performance of pile driving equipment in general and Vulcan hammers in particular. It's divided into several sections: Dynamic formulae: the original method of relating hammer performance to pile capacity and resistance Before Wellington and ENR: Early Dynamic Formulae, and Sanders' Formula Putting Dynamic Formulae to the Test: the … Continue reading Drivability of Vulcan Hammers and Other Pile Driving Equipment
The papers and monographs below are of general interest. We also offer the following topical pages as well: Pile Driving in Practice Pile-Soil Interaction (including static methods of pile capacity analysis) Programs and spreadsheet for pile capacity analysis Detailed information on pile dynamics and the wave equation is here. Allowable Stresses for the Upside-Down Timber … Continue reading Papers and Documents on Pile Driving and Driven Piles
The Action of Soft Clay Along Friction Piles: Bay Mud Revisited Lymon C. Reese1983 Research at Berkeley more than three decades ago gave new insight into the behaviour of axially-loaded piles in clay. Numerous experiments and analytical studies performed since, many of which have been supported by the oil industry with respect to offshore platforms, … Continue reading Pile Soil Interaction (including Static Capacity Analysis of Piles, Axial and Lateral)
The ultimate objective of any driven pile is to carry some kind of load. These loads come from a variety of sources, as seen on the right. Once the loads are established, the pile's resistance to the loads must be established. The interaction of piles and the surrounding soils--axial and lateral--is complex. Computer software and … Continue reading Pile Capacity Programs and Spreadsheet: Axial and Lateral
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