As instructed by Ordos government, Margot Krasojević has created a design proposal for a pedestrian bridge to cross Wulanmulun River, Ordos city, Kangbashi district Mongolia. The bridge features a main floating section that offers buoyant support for up to three expanding walkways, there’s a carbon fiber triple sail that is raised and lowered using buoyancy rotator. The design makes this bridge has a flexible structure and it can be re-located by sailing along the river to the new location. It folds into multiple sections that stack into each other.
You can read more about this project as explained by Margot Krasojevic:
“A hydraulic telescopic secondary structure supports the pedestrian walkway, expanding and contracting into the main body of the primary structure this movement depends on where the sailboat bridge is berthed or sailing to; the bridge can be moored along the quayside, sailed into any location along the river or permanently positioned using Caisson foundations which are floated and sunk into position stabilizing the bridge, screw-in moorings provide further stabilizing along with nine ton anchors to prevent drift. The bridge’s flexible walkways adapt to different quays and spans across the river, expanding and folding accordingly; The hydraulic walkway is supported by the river banks landing docks whilst the main body of the bridge is kept afloat by the sail and it’s rotator, the walkway and ring frame’s weight distribution prevents capsize, the primary ring frame has eight marine flotation airbags to further stabilize the sail rotation.
The sails are made from a lightweight aluminum frame clad in a carbon fiber reinforced polymer, they are suspended from a rotating Mobius ballast chamber hydraulically operated by a thruster to rotate and fill with water in order to revolve the sail and relocate the bridge, the rotating Mobius element is made from lightweight aluminum enveloped in stabilizer fins and photovoltaic cells which power the thruster, it consists of five ballast tanks which fill with water which rotate the sail from horizontal to vertical, the other four tanks are left filled with air so that the sail remains buoyant when used either as a bridge or sailed to a new position.”
“An array of cylindrical crossflow turbines skim the water’s surface, acting as a raft their buoyancy helps support and stabilize the bridge’s primary structure. When the bridge is in use the sail is lowered and acts as a canopy over a seated area for people to enjoy the views and the platform gardens, it unhinges from the hydraulic triangular section ring frame and rotates into vertical position in order to sail down the river.
Solar panels line the walkway providing energy for the three electric motor generators, the bridge can be towed, sailed or motored into different locations along the Wulanmulun River.”
More images of Revolving Sail Bridge:
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