Junttan PMx28 on a motorway bridge work site in Larvik09.07.2015
In 2005, the Norwegian Public Roads Administration began working on plans to replace a 6.4km long section of the E18 motorway between Bommestad and Sky in Norway. The motorway was constructed in 1970 and was no longer able to meet the requirements of the ever increasing road traffic. The plans involved constructing a four-lane motorway along the E18 past Larvik. The project involves the construction of a four lane motorway between Bommestad and Sky, as well as a motorway bridge stretching alongside the Farris drinking water reservoir, and a number of long tunnel projects. Prestigious engineering and construction project for Ramboll and Bilfinger Ramboll was awarded the bridge construction, which the company won in collaboration with L2 Architects. The bridge is one of the largest bridge engineering projects for Ramboll in Norway and it will be designed entirely in 3D. "The goal of this new road project is to provide better access, reduce accidents and improve the environment. The chosen road solution is an excellent solution for the environment, the local community, and motorists." says Sverre Sundfær, Service Area Coordinator for Transport in Norway The traffic on the stretch of the E18 motorway can reach up to 17,000 vehicles a day. Bilfinger Construction was signed as the contractor for the bridge and express road construction in Farris. Total contract value for the company is PLN 360 million. The contract assumes the construction of a cable-stayed bridge of a total length of 571.48 meters. The superstructure consists in the main span of a total length of 120 m constructed of two parallel steel boxes assembler to a reinforced-concrete plate, 75 m high pylons and two access viaducts of the lengths of 280 and 170 m, respectively, constructed of two parallel steel boxes. The construction began in 2014 and the bridge will be opened in 2017. PMx28 on the job The piling work for the Farris bridge foundations is done by Kynningsrud AS. The company uses its newly ordered 95 ton Junttan PMx28 to finish the job. The rig was delivered with two hammers to be able to finish both concrete and steel pipe piles. The bridge project included driving ø914mm/22.5mm steel tube piles and 300x300 concrete piles. The steel tube piles were 17m long and had a total mass of 6,7 tons. They were driven with Junttan HHK 10/12 ton hammer (max impact energy 176 kNm) to a 5:1 inclination. The concrete piles were spliced 13-18m piles and were driven with Junttan SHK 5/7 ton hammer. Kynningsrud has been very satisfied with the PMx28 and its driving capacity. The rig was delivered with Junttan’s remote diagnostics system which has proven to very be useful in for instance hydraulics adjustment operations. Sources: Ramboll, Bilfinger and Norwegian Public Roads Administration |