FOOTBRIDGE ACROSS LITAVKA RIVER, BEROUN. DESIGN BASED ON VIBRATION EIGENFREQUENCIES AND EIGENMODES

Abstract eng:
The proposed structure is supposed to bridge Litavka river near Beroun city center, allowing the city to expand its parks and leisure time areas to the river’s so far inaccessible right bank. A 37 m single-span structure from architectural bureau HABE was chosen. It combines two usual building materials – glulam timber and steel into unique structure. This design respects existence of another nearby footbridge, massive glulam arch structure, being more subtle while crossing longer span. This subtlety brought lack of stiffness indeed, resulting in very low first eigenfrequencies and critical load. The structure required to be redesigned, in terms of structural engineering, but also keep its original visual appearance.

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