Diagnostic Test Result

Adjustment factor resulting from the comparison of measured test behavior with the analytical model can be considered to calculate the load-rating factor based on the test result.

From the Main Menu select Rating > Steel Bridge > Diagnostic Test Results

Option

Add/Replace: Add/Replace the rating option to the selected element for design

Delete: Delete the rating option defined previously for the selected element

Define Rating

Position

I: Enter the diagnostic test results only at i-end.

J:Enter the diagnostic test results only at j-end.

I & J: Enter the diagnostic test results at both ends.

Load Test Measurement

Auto-Calculation

Strain / Displ.(I): Maximum strain or displacement measured during load test at i-end

Strain / Displ.(J): Maximum strain or displacement measured during load test at j-end

Note.

Measured value can be entered as Strain or Displacement. It can be specified in Rating Parameter.

Kb: Factor for the understanding of the load test results when compared with those predicted by theory. Refer to the figure below from Table 8.8.2.3.1-1 of The Manual for Bridge Evaluation, 2011.

Values for Kb

Note.

When Auto-Calculation is selected, the Adjustment Factor is calculated as below.

K=1 + Ka Kb

where, Ka=εC/εT-1

εC = Maximum strain or displacement measured during load test

εT = Corresponding calculated strain or displacement by the program

User Input

Adjustment Factor, K : Enter the adjustment factor directly from the manual calculation.