STUDI PARAMETER DESAIN DIMENSI ELEMEN STRUKTUR JEMBATAN GANTUNG PEJALAN KAKI DENGAN BENTANG 120 M

Isyana Anggraeni, Bernardinus Herbudiman


Abstract


Suspension bridge is an effective and efficient fixed-link to cross rivers or gorges. The advantages of suspension bridge compared with other bridges are: aesthethic performance and longer span where continuous short support along rivers or gorges is not possible. In designing a safe but fairly economical bridge, suitable structure dimensional must be considered. The suspension bridge has several dominan structural elements, such as main cable, hanger rod, main girder, and pylon. This research has been done by manual calculation and program analysis. The suspension footbridge model has 120-meters span. Several structure element dimension variation is applied such as diameter of hanger rod, main cable, main girder profile inertia and pylon profile area. Service limit parameters such as: deflection, main girder maximum moment, backstay tensile load, main cable tensile load and pylon compression load have been considered. The influences of incremental dimensions on several service limit parameters have been summarized. An effort of enlarging structural element which provide significant influences on the service parameter is increase the dimension of main cable.


Keywords


Deflection, main cable dimension, suspension footbridge.

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