Utilizing Strain Gages to Estimate Lateral Load Test Displacement Vs. Depth-PPT Presentation

PPT Presentation

Pdf Summary

The presentation describes methods for estimating pile deflection during lateral load testing using strain-gage measurements. It outlines the relationship between measured tension and compression strains in the reinforcing cage and pile curvature, then compares an analytical approach based on Euler–Bernoulli beam theory with numerical derivation and integration methods for calculating deflection.<br /><br />A modified numerical integration approach is also presented. The methods are followed by validation examples and a discussion of estimating pile rotation from displacement measurements taken at vertically offset locations. The presentation was delivered by Jon Sinnreich of GRL Engineers at DFI SuperPile ’23.

Keywords

pile deflection

lateral load testing

strain-gage measurements

pile curvature

reinforcing cage

Euler–Bernoulli beam theory

numerical integration

pile rotation

displacement measurements

DFI SuperPile 23