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Development of Wood Bridges: Scale Model Tests of a Wooden Arch Bridge; Research rept
| 题名： | Development of Wood Bridges: Scale Model Tests of a Wooden Arch Bridge; Research rept |
| 作者： | Rautakorpi, H.; Jutila, A.; Maekipuro, R.; Haakana, P.; Salokangas, L. |
| 关键词： | Model tests; Scale models; Design analysis; Bridge design; Structural analysis; Joints(Junctions); Displacement; Deflection; Dimensions; Beams(Structural); Test facilities; Structural design |
| 摘要： | The report is concentrating on a scale model of a wooden arch bridge. The span of the model, which is thought to represent a real bridge in scale one to ten, is 4.2 meters. Externally the model is supported as a simple beam, which means that no external redundant force for the arch is provided. The report includes overall sketches as well as detail drawings of the most important parts of the model. The loading cases considered are the dead load, the wind load on the arches, point loads on the bridge deck and a distributed load on one half of the span. In the last case mentioned the load was gradually increased almost until the rupture load. The loading arrangements are introduced by drawings and photographs. During loading deflections and horizontal displacements were measured at several points around the model. The most important test results are presented graphically. According to the tests the horizontal rigidity of the model seems to be less than assumed by the theory used. The reason is found by the loosened joints of the bracing members. On the other hand, the deck plate makes the model quite rigid for vertical loads. |
| 总页数： | 28p |
| 报告类型： | 科技报告 |
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