## 4 Results and Discussion
### Linear Static Finite Element Analysis Results
\begin{table}
\begin{tabular}{c c c c c} \hline \hline  & \multicolumn{3}{c}{**Primary Girder (Main Girder) Truss**} \\ \hline  & \multicolumn{2}{c}{**Chord**} & \multicolumn{2}{c}{**Web**} \\  & **Top** & **Bottom** & **Bracing** & **Vertical** \\ \hline Size & 900 WB282 & 250 UB37.3 & 310 UC158 & 100 UC14.8 \\ Length (mm) & 5500 & 2750 & 6800 & 4000 \\
1.35G & 6123, \(-\)448 & 634, \(-\)633 & 2280, \(-\)1803 & 191, \(-\)151 \\ \(1.2G+1.5\)Q & 7020, \(-\)2854 & 1174, \(-\)1317 & 5125, \(-\)3664 & 427, \(-\)131 \\ \(1.2G+Q+W_{orth}\) & 6246, \(-\)2027 & 965, \(-\)1099 & 4058, \(-\)3029 & 351, \(-\)164 \\ \(1.2G+Q+W_{up}\) & 6167, \(-\)2101 & 966, \(-\)1052 & 4041, \(-\)3017 & 338, \(-\)155 \\ \(1.2G+Q+W_{down}\) & 6196, \(-\)1952 & 981, \(-\)1136 & 4110, \(-\)3082 & 367, \(-\)162 \\ \hline
**Maximum** & **7020, \(-\)2854** & **1174, \(-\)1317** & **5125, \(-\)3664** & **427, \(-\)164** \\
**Axial Capacity** & **10,085, \(-\)9654** & **1334, \(-\)1539** & **5646, 6151** & **531, 612** \\
**Utilisation** & **0.70, 0.30** & **0.88, 0.86** & **0.91, 0.60** & **0.80, 0.27** \\ \hline \hline \end{tabular} Note: Compressive forces are shown as negative and tensile forces as positive.  
\end{table} 
Table 16: Analysis results of axial forces and member selection for primary girder (main girder) truss component (kN). \begin{table}
\begin{tabular}{c c c c} \hline \hline  & \multicolumn{2}{c}{**Secondary Arch (Sub-Arch) Transverse Bracing**} \\ \hline  & **Chord** & **Web** \\ \hline Size & 150 UC30.0 & 200 UC59.3 \\ Length (mm) & 8000 & 8000 \\ Axis & X & Y & X & Y \\
1.35G & 3 & 0 & 10 & 2 \\
1.2G + 1.5Q & 4 & 0 & 12 & 2 \\
1.2G + \(Q+W_{orth}\) & 3 & 0 & 11 & 1 \\
1.2G + \(Q+W_{up}\) & 4 & 9 & 15 & 45 \\
1.2G + \(Q+W_{down}\) & 4 & 9 & 15 & 46 \\ \hline
**Maximum** & **4** & **9** & **15** & **46** \\
**Flexural Capacity** & **29** & **22** & **102** & **67** \\
**Utilisation** & **0.14** & **0.42** & **0.15** & **0.68** \\ \hline \hline \end{tabular} Note: Bending moments are presented as absolute values.  
\end{table} 
Table 15: Analysis results of bending moments and member selection for secondary arch (sub-arch) component (kNm). \begin{table}
\begin{tabular}{c c c c} \hline \hline  & **Top** & **Web** & **Bottom** \\ \hline Size & 460 UB82.1 & 180 UB18.1 & 200 UB29.8 \\ Length (mm) & 8000 & 7890 & 8000 \\
1.35G & 870, \(-\)710 & 12, 0 & 308, \(-\)553 \\ \(1.2G+1.5Q\) & 2135, \(-\)608 & 14, 0 & 449, \(-\)683 \\ \(1.2G+Q+W_{orth}\) & 1689, \(-\)608 & 112, \(-\)101 & 525, \(-\)734 \\ \(1.2G+Q+W_{up}\) & 1707, \(-\)591 & 109, \(-\)98 & 513, \(-\)700 \\ \(1.2G+Q+W_{down}\) & 1702, \(-\)620 & 132, \(-\)121 & 531, \(-\)724 \\ \hline
**Maximum** & **2135, \(-\)710** & **132, \(-\)121** & **531, \(-\)734** \\
**Axial Capacity** & **2950, \(-\)2459** & **646, 668** & **1073, \(-\)1238** \\
**Utilisation** & **0.72, 0.29** & **0.20, 0.18** & **0.49, 0.59** \\ \hline \hline \end{tabular} Note: Compressive forces are shown as negative and tensile forces as positive.  
\end{table} 
Table 17: Analysis results of axial forces and member selection for primary girder (main girder) transverse bracing component (kN).