# Load Testing and Analysis of a Large Span Through Simply-Supported Steel Box Arch Bridge
## 4 Static Load Test
### Static Load Test Results Data Analysis
#### 4.4.2 Suspension Rod Tension Test  
Under the load of Condition 1, the largest increase in tension was measured at the mid-span of the D6 suspension rod. The verification factors for the tension increase of the  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Measurement Point Location** & **Measurement Point ID** & **Strain Test Result (\(\upmu\epsilon\))** & **Calculated Value (\(\upmu\epsilon\))** & **Residual Strain (\(\upmu\epsilon\))** & **Residual Strain Rate (\%)** & **Verification Factor** \\ \hline \multirow{4}{*}{East Side Tie Beam (L/2)} & Top Plate & E1 & \(-5\) & 2 & 0 & 0.0 & / \\  & E2 & \(-12\) & \(-1\) & 0 & 0.0 & / \\  & E3 & 51 & 72 & \(-1\) & \(-2.0\) & 0.71 \\  & E4 & 49 & 70 & 0 & 0.0 & 0.70 \\  & E5 & \(-11\) & \(-1\) & 1 & \(-9.1\) & / \\  & E6 & \(-8\) & 2 & 0 & 0.0 & / \\  & E7 & 46 & 70 & \(-1\) & \(-2.2\) & 0.66 \\  & E8 & 51 & 72 & \(-1\) & \(-2.0\) & 0.71 \\ \hline \hline \end{tabular}
\end{table}
Table 4: Measured data of tie beams under working condition 1.  
\begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline
**Measurement Point Location** & **Measurement Point ID** & **Strain Test Result (\(\upmu\epsilon\))** & **Calculated Value (\(\upmu\epsilon\))** & **Residual Strain (\(\upmu\epsilon\))** & **Residual Strain Rate (\%)** & **Verification Factor** \\ \hline \multirow{4}{*}{East Side Tie Beam (L/4)} & Top Plate & A01 & \(-52\) & \(-59\) & 0 & 0.0 & 0.88 \\  & A02 & \(-30\) & \(-32\) & \(-2\) & 6.6 & 0.94 \\  & A03 & \(-30\) & \(-47\) & 0 & 0.0 & 0.64 \\ Ring (Arch Foot) & Web Plate & A04 & \(-17\) & \(-27\) & 0 & 0.0 & 0.63 \\  & Bottom Plate & A05 & \(-22\) & \(-35\) & \(-2\) & 9.0 & 0.63 \\  & Bottom Plate & A06 & \(-13\) & \(-22\) & 0 & 0.0 & 0.59 \\  & Top Plate & A07 & \(-30\) & \(-32\) & \(-1\) & 3.3 & 0.94 \\  & A08 & \(-51\) & \(-59\) & \(-2\) & 3.9 & 0.86 \\ West Side Arch & Web Plate & A09 & \(-19\) & \(-27\) & \(-1\) & 5.2 & 0.70 \\ Ring (Arch Foot) & Web Plate & A10 & \(-33\) & \(-47\) & \(-1\) & 3.0 & 0.70 \\  & A11 & \(-15\) & \(-22\) & 0 & 0.0 & 0.68 \\  & Bottom Plate & A12 & \(-21\) & \(-35\) & 0 & 0.0 & 0.60 \\ \hline \hline \end{tabular}
\end{table}
Table 3: Measured data of arch footings under working condition 3.  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Measurement Point Location** & **Measurement Point ID** & **Strain Test Result (\(\upmu\epsilon\))** & **Calculated Value (\(\upmu\epsilon\))** & **Residual Strain (\(\upmu\epsilon\))** & **Residual Strain Rate (\%)** & **Verification Factor** \\ \hline \multirow{4}{*}{East Side Tie Beam (L/4)} & Top Plate & D01 & \(-20\) & \(-24\) & 0 & 0.0 & 0.83 \\  & D02 & \(-21\) & \(-29\) & 0 & 0.0 & 0.72 \\  & D03 & 67 & 94 & 0 & 0.0 & 0.71 \\  & D04 & 66 & 91 & 1 & 1.5 & 0.73 \\  & Top Plate & D05 & \(-21\) & \(-29\) & 1 & / & 0.72 \\ West Side Tie Beam (L/4) & D06 & \(-16\) & \(-24\) & 1 & / & 0.67 \\  & D07 & 62 & 91 & 0 & 0.0 & 0.68 \\  & Bottom Plate & D08 & 64 & 94 & 0 & 0.0 & 0.68 \\ \hline \hline \end{tabular}
\end{table}
Table 5: Measured data of tie beams under working conditions 3.  
D6 suspension rods at the left and right arch ribs were 0.98 and 0.96, respectively, both of which are less than 1. The measured tension increase verification factors satisfied the code requirements [33], indicating that the structural strength meets the design specifications.