An urban construction project is currently being executed in Moscow: an ultra-modern bus terminal with a capacity of 15,000 passengers per day on the Sholkovskoye Chaussee. The project includes 11 stories of modern glass design, with a selection of shopping and entertainment facilities combined with the bus terminal in an architectural complex. Approximately 1,600 bus services are expected daily, 15,000 passengers per day, and at peak times, 1,000 passengers are expected per hour. This underlines the importance of a good public transport infrastructure in the Russian metropolis. Designed by the architect, Werner Sobek, the contractor, Fensma, is executing the project with Liebherr equipment.
Deep foundation work for the new building is being carried out by a fleet of eight Liebherr machines including seven duty-cycle crawler cranes with lifting capacities between 70 and 120 tons, and one LRB 255 piling and drilling rig. Cast-in-place slurry walls with a total of 310,000-square-meters and 3,500 tons of reinforcement cages are being installed as a lining wall for the foundation pit. For this purpose, two carrier machines are fitted with hydraulic grabs and four with mechanical grabs. These are applied as necessary and interchanged between the duty cycle crawler cranes. The slurry wall has a maximum depth of 52 meters and is 800 millimeters thick. Eighteen hours are required for the excavation of one bite with a length of 2,800 millimeters. A delivery pipe is used for filling the concrete.
In addition to the slurry wall, the deep foundation fleet from Liebherr is inserting 154 individual barrette piles for foundations. One barrette has a depth of 52 meters and a volume of 110 m³ concrete. A total of 800 tons of steel is being installed.
After a construction period of only two years, the new complex will be completed in 2019. The contractor was not only confronted with a time constraint, but also difficult soil conditions: loam, sand, clay and groundwater. Under these conditions, it is a particular challenge to achieve the necessary verticality of the slurry wall. However, Fensma specializes in the realization of urban building projects, and is relying on the quality and service of Liebherr construction machinery and customer service during the execution in two aspects.
“We build quickly and in high quality. And Liebherr is helping us!” says Sergey S. Dyachkov, CEO of Fensma.
Efficiency and economy both play an important role in this project. A diesel consumption of only 23 liters per hour for the HS 8100 HD, the newest machine in the fleet used by Fensma, is a clear testament to this. The costs for the modern glass complex amount to USD$89 million, and one-fifth of these costs are attributed to the deep foundation work.
This short film shows the eight Liebherr machines operating in Moscow: https://www.youtube.com/watch?v=Zwk6ljTQo2Y&feature=youtu.be.