tag:blogger.com,1999:blog-4546920008494360431.post7275418414517172955..comments2023-10-19T09:56:27.626-07:00Comments on Will It Stand?: Will a catenary span 600 ft?Unknownnoreply@blogger.comBlogger3125tag:blogger.com,1999:blog-4546920008494360431.post-36408816304158295332010-08-06T11:29:41.349-07:002010-08-06T11:29:41.349-07:00This bridge was designed as a 3D Space Frame that ...This bridge was designed as a 3D Space Frame that sustains itself due to the two major arcs cantilevering from each side and joining at midspan. The interior decks are suspended with cables and stablized with telescopic rods from the sides. In all my research I did not come across another similar example, but would love to learn of any if anyone knows. A year after completing it I saw pictures of the Zaragoza bridge, which is the only structure that comes close conceptually to what I was envisioning, though structurally seems still very different. <br /><br />Thanks for your comments and thanks again Ken for the very interesting analysis! More drawings and images of The Chameleon structure are on my website www.adinabalasu.com<br />AdinaAdina Balasuhttp://adinabalasu.com/artwork/836454_Site_Perspective.htmlnoreply@blogger.comtag:blogger.com,1999:blog-4546920008494360431.post-50787862178690776862010-03-30T19:47:12.935-07:002010-03-30T19:47:12.935-07:00Great insight and suggestions! Thanks. I will ch...Great insight and suggestions! Thanks. I will check out Ziesel's work.Will it stand?https://www.blogger.com/profile/13139101810203139708noreply@blogger.comtag:blogger.com,1999:blog-4546920008494360431.post-75841619524369611302010-03-08T02:00:24.212-08:002010-03-08T02:00:24.212-08:00The difficulty with any catenary or suspension bri...The difficulty with any catenary or suspension bridge is the cost of anchoring the enormous tensile loads that can result back into the ground. Depending on the ground conditions, the cost can be considerable, and the foundations would always be more extensive than a beam of the same span and weight.<br /><br />You should investigate the concept of a stressed-ribbon bridge, which is essentially a catenary structure prestressed to establish stiffness and eliminate swim. The concept has been used in building roofs as well as bridges, and is well-proven.<br /><br />Regarding your structural diagram (blue and red), you could also look to alternative examples like the Simone de Beauvoir footbridge, or similar designs by Wolfdietrich Ziesel.The Happy Pontisthttps://www.blogger.com/profile/15252272118786667592noreply@blogger.com