Providing a pedestrian and cycle crossing over the Brisbane River in Brisbane, Australia, Kurilpa Bridge connects Brisbane’s Central Business District with the city’s South Bank and its major cultural precinct. As the world’s largest structure based upon a ground breaking system of balanced compressive and tensile forces named “tensegrity”, Kurilpa Bridge is a 470m long multi-mast, cable-stay bridge with a 120m main span. The tensegrity principle was required and successfully implemented in order to minimize the deck thickness and ramp length, while creating a strong but agile structure.
While the geometry of the bridge is informal, the cables (in tension) and tubes (in compression) have been arranged with a structural rhythm, in order to deliver the strength and resilience required to carry thousands of pedestrians and cyclists. Kurilpa Bridge not only provides a new connection across Brisbane’s river but also forms a new public space. Namely, it features two large viewing and relaxation platforms, two rest areas and a continuous all-weather canopy, which has become a symbol for art, science, technology, and healthy living. Its structural elements seem to be floating in the air delivering to the bridge a completely new identity and a unique appearance. Its innovative architectural style and advanced technology have deeply transformed Brisbane’s image to that of a city rich in walking and cycling opportunities.
Completed in 2009, Kurilpa bridge has recently had its lighting system upgraded with a new GRIVEN LED lighting system specified by Cameron Gunning of Vision & Sound Technology (VAST), working close to Griven’s exclusive distributor in Australia, the ULA Group. The project was initialized and managed by Adam Axten from electrical contractors Stowe Australia.
Cameron Gunning Comments: ”Griven manufacture an excellent product that is very robust and reliable. The LED sources are extremely high quality with consistent colour matching across luminaires. Both fixtures offer very accurate optics and powerful output in a really compact housing. The slim line design of the Emerald and small footprint of the Ruby fixtures provides an unobtrusive addition to the bridge structure.”
At night, the bridge is lit up by a sophisticated LED lighting system, which can be programmed to produce an array of different lighting effects. Depending on the different lighting configurations, 75%-100% of the power required is provided by solar energy. Solar panels are mounted directly on top of the bridge, generating a daily output of 100KWh.
32 units of JADE 16 in RGBW colour configuration with narrow optics have been installed in carefully selected points of the bridge in order to enlighten its structure, made of huge metal tubes, up to the top. Moreover, 10 EMERALD RGBW with narrow optics have been mounted on the external cornices of the bridge to deliver a splash of coloured light to the whole structure. In order to avoid any unpleasant glaring effect to pedestrian and cyclists and to better direct the light beams, these fixtures have also been equipped with specially developed anti-glare shields.
JADE 16 RGBW is a newly engineered rounded spotlight, which houses sixteen high power RGBW LEDs, as well as in-built electronics and power supply unit. Providing a vibrant and brilliant colour palette from such a compact chassis, JADE 16 RGBW features functional efficiency whereas spectacularly dynamic lighting performance is assured by digital control of all functions, either onboard for standalone operation, with Master-Slave selectable for multiple unit synchronization, or from external DMX512 controller. The wide choice of selectable optics groups, ranging from narrow aperture beams to elliptical wide distribution, and the aiming orientation adjustment further enhance JADE 16 RGBW maximum flexibility for any surface mount application purpose. JADE 16 RGBW Polar Edition features an integrated de-icing system with electrically heated glass, which assures a comfortable functioning even in the utmost severe cold weather conditions.
Benefiting from state of the art electronic colour mixing, EMERALD RGBW features 60 premium quality high RGBW power LEDs, coupled with a variety of high build and design optics groups for the utmost optical efficiency, balanced projection and photometric flexibility. The combination of RGBW LEDs offers an unprecedented astonishing white light output quality, as well as a wider variety of intermediate colour hues for an even broader range of application purposes. Such a remarkable performance is enhanced by the capacitive touchscreen display that allows for a direct access to all on-board functions.
32x Jade 16 RGBW with narrow optics
10 x EMERALD RGBW NARROW with anti-glare shield
Photo credit: Adam Axten