港珠澳大桥 世界最长跨海 大桥35公里 (其中6公里 海底隧道)
港珠澳大桥 世界最长跨海 大桥35公里 （其中6公里 海底隧道）
Innovative thinking in engineering 5km Classical Suspension 1km 3km 1km 2:Hybrid Double Cantilever Suspension 3:Hybrid Cable-Stayed Suspension
Innovative thinking in engineering • The alternative of 14km route crossing the gulf was adopted, three piers were built with 450m pile foundation • The mixed type Gibraltar bridge uses suspension bridge spanned 3000m in the middle and a cantilever for both 1000m to support the cable in the middle by inclined struts at the both sides
Innovative thinking in engineering Ling-tie was designed for the crossing of Yong river in Nanning,Guangxi China. A pair of inclined steel arch formed a saddle support the curved 300m steel box girder with 6-lanes traffic. The approaches are the post-tensioned RC box girders on RC piers. ● Both sound structural features as well as the aesthetics uniqueness made the bridge a landmark of the city
Innovative thinking in engineering • Ling-tie was designed for the crossing of Yong river in Nanning, Guangxi China. • A pair of inclined steel arch formed a saddle support the curved 300m steel box girder with 6-lanes traffic. • The approaches are the post-tensioned RC box girders on RC piers. • Both sound structural features as well as the aesthetics uniqueness made the bridge a landmark of the city
11.3.Shell Systems The characteristic of shell structure is evident in its 3D effect and behaves mainly in membrane stresses It is formed by combining revolution with rotation or translation of the arches
11.3. Shell Systems The characteristic of shell structure is evident in its 3D effect and behaves mainly in membrane stresses . It is formed by combining revolution with rotation or translation of the arches
Fig.11-18 Domes created by rotation or translation S\SYMMETRY·REQUIRES THAT A CIRCLE BE DESCRIBED ON A HORIZONTAL PLANE PERSPECTIVE (ARCH IS ROTATED) PLAN IS OF RADIATING ARCHES p) SURFACES OF TRANSLATION S HORIZONTAL PLANE THRU SURFACE CUTS A CIRCLE IF CURVE OF ARCH TRANSLATION PATH ARE EQUIVALENT TRANSLATION
Fig.11-18 Domes created by rotation or translation