Geotechnical works for an underground electric power station, in Bucharest
Geotechnical works for an underground electric power station, in Bucharest
This article presents design phases, special foundation works, and technology used for construction of an electrical power station, with two basements, in a crowded area of the city. The surface of the underground structure is 700 sqm. Both effective design solution and technology standards cope with challenging demands such as neighbour buildings, high traffic area and restrained site area. As for environmental concerns, this project used low carbon concrete, which significantly reduced carbon footprint of the entire construction. Pit enclosure consisted of CFA piles and one row of horizontal steel struts. Further challenges such as limited water in-flow, due to electrical equipment installed inside the basements were coped by infrastructure design and execution, as well. To assure safe excavation works at the depths of -10 meters and -11.50 locally and then to build the reinforced concrete raft and infrastructure, retaining wall piles was required. Based on site characteristics, soil conditions (silty clay and ground water level at approx. -7,50 m, distanced CFA piles of 60 cm and 40 cm diameter were built. Considering the architectural and structural configuration proposed, the building's foundation system consists of a general raft. Infrastructure consists of columns, beams, walls made of reinforced concrete and slabs. The perimeter structural walls of basements are 25-30cm thick with additional waterproofing requirements applied. Optimised solution proved to be effective for both civil and geotechnical works, delivering the project on time.
D. Ciumeica; A. Popa; Lorand Sata; S. Manea
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
D - Current and new construction methods
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