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InTrans / Aug 14, 2018

Timber Tied Arch Bridge on City Roadway

Detailed descriptions and results of field tests of Yunomata bridge which was tentatively constructed with glulam timber are presented herein. The bridge consists of timber arch ribs without lateral bracing, glulam longitudinal deck panels, steel hangers and steel ties. The type of bridge was selected, considering the limitation of girder height and surrounding circumstances of the bridge. The full scale model test of bolted timber joints at nodes of arch rib were done to ascertain the load-slip behavior between steel ties. The type of bridge was selected, considering the limitation of girder height and surrounding circumstances of the bridge. The full scale model tests of bolted timber joints at nodes of arch rib were done to ascertain the load-slip behavior between steel box and arch rib at the joints and the load-slip spring constant were obtained. Using the spring constant obtained, the numerical values based on a framed structural analysis were obtained and compared with the results of field test.

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