Data Collection and Performance Monitoring of an Instrumented ...
Data Collection and Performance Monitoring of an Instrumented ...
Data Collection and Performance Monitoring of an Instrumented ...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
P3 2009 Pavement <strong>Perform<strong>an</strong>ce</strong> Prediction Symposium: July 15-17, 2009, Laramie, Wyoming<br />
Pavement Instrumentation Response<br />
• FWD conducted on top <strong>of</strong> each earth pressure<br />
cell after construction<br />
– Structural <strong>an</strong>alyses performed using KENPAVE (calculated)<br />
– Pressure cell nearest to the loading surface shows the best<br />
agreement with the calculated values<br />
– Difference between measured <strong><strong>an</strong>d</strong> calculated values could be<br />
attributed to the major assumptions <strong>of</strong> elastic theory used by<br />
KENPAVE (e.g., all layers are assumed to be infinite, static load,<br />
etc.)<br />
Stress (psi)<br />
Pressure Cell<br />
Location<br />
Natural<br />
Subgrade<br />
Stabilized<br />
Subgrade<br />
Aggregate<br />
Base<br />
Load (lbs.)<br />
Measured<br />
Calculated<br />
Percent<br />
Difference<br />
6,000 1.1 2.6 131<br />
9,000 1.5 3.8 162<br />
12,000 2.2 5.1 133<br />
15,000 3.1 6.4 104<br />
6,000 3.7 4.9 34<br />
9,000 4.5 7.4 63<br />
12,000 6.4 9.8 54<br />
15,000 8.5 12.3 45<br />
6,000 9.1 9.5 4<br />
9,000 11.6 14.2 22<br />
12,000 17.3 18.9 9<br />
15,000 22.6 23.6 5
Change language