RALPH·GUNSON·PARKER
0
RALPH·GUNSON·PARKER
ARTIST. | WRITER. | ARCHITECT.
0
 



“Hyperbolic surfaces have long been used in building design due to their inherently efficient structural form, primarily in standalone towers and cooling towers dating back as far as the late 1880s. ”

- Rob Nilsson - Price & Myers

 
 




The geometry for the Minet Park Bridge is derived from slicing either side of a hyperbolic paraboloid surface with a planar cut to generate the curve for a pair of simple parabolic arches. The hyperbolic paraboloid is also a form of a ruled surface in that its curves can be defined by a series of straight, parallel lines. Fabrication and installation are therefore greatly facilitated, as all structural members are standard and straight, no bending or curving is necessary.

To adapt to the site conditions, two separate hyperbolic paraboloids will be intersected end-to-end to create a two span bridge structure with a central support. A straight intersection would result with a kink in plan, so the central portion of the bridge over the central support will be a blended surface between the two hyperbolics to generate a smooth, flowing curve.

 

Eel Net Bridge (2009)


Project Credits:

Architect: Hakes Associates
Structural Engineer: Price & Myers Geometrics
Bridge Designers:
Ralph Parker RIBA
Tim Lucas
Rob Nilsson

Photo: © Ralph Parker + Chris Taylor All rights Reserved