61_HWKTTE 4004c - A line with slope equal 45 degrees has been drawn to facilitate the comparison between the two methods of determining pile

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51 CHAPTER 6 LRFD DATA PRESENTATION AND ANALYSIS Data Reduction Prior to determine the LRFD for each dynamic method, a simple statistical analysis was performed. For all the dynamic methods, graphs of measured capacity (Davisson Capacity) related to the estimated capacity at End of Drive (EOD) and Beginning of Restrike (BOR) were constructed. The number of cases for each method was determined based on the availability of parameters needed to obtain the estimated capacity for the corresponding method. The statistic and some of the LRFD results Appendix A for all CAPWAP Procedure results, Appendix B for all PDA results, Appendix C for Paikowsky’s Energy Method results, etc…) Figures 6-1 and 6-2 present the plots for the PDA at BOR. Figure 6-1 presents a simple graph of PDA BOR capacity versus Davisson Capacity.
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Unformatted text preview: A line with slope equal 45 degrees has been drawn to facilitate the comparison between the two methods of determining pile capacity. A regression line with the corresponding equation and R 2 is shown in the plot. This latter graph is ideal to visually determine how scattered the predictions are for each method. The second graph (Figure 6-2, PDA at BOR) presents the ratio of measured to predicted capacity on the vertical axis and the measured 52 y = 0.9966x R 2 = 0.4851 1000 2000 3000 4000 5000 6000 7000 8000 2000 4000 6000 8000 Davisson Capacity (kN) Figure 6-1. Davisson Capacity vs. PDA BOR Capacity 0.0 0.5 1.0 1.5 2.0 2.5 1000 2000 3000 4000 5000 6000 7000 Davisson Capacity (kN) Cases=42 Mean=1.036 Standard Dev.=0.32 Figure 6-2. Measured Over Predicted Capacity for PDA at BOR...
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This note was uploaded on 10/19/2011 for the course TTE 4004c taught by Professor Hass during the Spring '11 term at University of Florida.

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61_HWKTTE 4004c - A line with slope equal 45 degrees has been drawn to facilitate the comparison between the two methods of determining pile

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