Comparison of dynamic CAPWAP and static BDSLT load test results at Signature Bridge-PPT Presentation

PPT Presentation

Pdf Summary

The presentation compares dynamic CAPWAP and static BDSLT load-test analyses for the FDOT I-395 Signature Bridge in Miami.<br /><br />CAPWAP (Case Pile Wave Analysis Program) analyzes drop-hammer test measurements, including strain and acceleration, using signal matching. It models the pile and surrounding soil, then iteratively adjusts resistance and soil parameters until calculated wave response matches the measured response. The analysis can estimate ultimate static pile capacity, separate shaft and toe resistance, show how shaft resistance is distributed, and determine soil parameters. Although pile properties are known, soil behavior must be inferred.<br /><br />BDSLT analysis is also presented, with figures indicating displacements of about ±1.4 inches and loads or resistance values including 6,550, 7,500, 2,160, and 11,890 kips. The extracted slides do not explain these values or provide a clear final comparison of the two methods.<br /><br />Overall, the presentation outlines the principles and outputs of CAPWAP and shows BDSLT results for comparison, but the available text does not state which method produced higher capacity or draw specific conclusions about agreement between the tests.

Keywords

CAPWAP

BDSLT

FDOT

I-395 Signature Bridge

dynamic pile testing

static load test

pile capacity

shaft resistance

toe resistance

soil parameters