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Title |
Erection Sequence Analysis of Suspension Bridge Considering to Sliding of Main Cable
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Keywords |
케이블 ; 시공단계 ; 마찰 ; 슬라이딩 ; 새들 ; 현수교 ; Cable ; Erection sequence ; Friction ; Sliding ; Saddle ; Suspension bridge |
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Abstract |
Anchors and saddles are used to have sufficient geometrical rigidity and make target configuration of main cable of suspension bridge. Neglecting the sliding effect at saddles, points at them have been idealized as fixed nodes in lots of former studies. In general, sliding effects are reported to show significant structural behaviors of main cable and cause to the different responses of bridges. During early erection steps of the suspension bridge, especially, the sliding effect occurs easily because there is large difference of cable tension between main and side span in removing set-back ropes or not applying set-back. This study presents the finite element analysis considering to cable sliding effect and shows the comparison of differences between sliding and non-sliding at election sequence. The analysis of sliding between main cables and saddles needs to obtain more realistic responses because the analysis result can represent unfavorably different responses of bridges. Moreover, the sliding analysis method and results in this study can be used to basic criteria in engineering design and construction steps.
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