|Turin-Ceres - Connection of the line with the RFI network - Equipment - SUBWAYS||References_6038|
The connection of the Turin-Ceres railway (Gruppo Torinese Trasporti) with the Turin railway network (Rete Ferroviaria Italiana) represents important underground works of approximately 4.2 km including the realization of a new twin-track tunnel along Largo Grosseto, the completion of Rebaudengo Underground Station and the adaption of an existing twin-track tunnel section.
In addition to the structural design, Lombardi has developed the detailed design of the necessary electromechanical equipment to ensure the safety of users and the functionality of the railway’s operation and the underground stations.
The design of Grosseto Station has been developed using Building Information Modelling (BIM) which allowed an efficient interaction between the different design disciplines, obtaining a high-quality result.
The electromechanical system, designed with respect to the safety requirements of the Ministerial Decree 28.10.2005 “Safety of railway tunnels”, includes the medium and low voltage power supply, the normal and emergency lighting system, a complex ventilation and fumes control system for the underground stations, the pressurization system of the emergency exits, the fire detection system, the water distribution networks for the hydrants and the automatic high pressure sprinkler extinguishing system, the ventilation and air-conditioning of the technical rooms, the video surveillance as well as the intrusion protection and monitoring systems.
|Grand Paris - Line 15 - Execution studies||References_6907|
|Analysis of excavations in complex urban areas||References_8758|
The design of underground structures in urban areas, typically with low overburden, the interference between excavations and existing structures must be determined with respect to stresses and induced settlements. Given the considerable density of underground structures already built in large metropolitan centers, new structures often fit into a complex infrastructures framework.
The analysis of interferences between excavations and existing structures under complex design conditions requires advanced numerical studies. Lombardi Ltd. provides services in this field using commercial 2D and 2D software. Lombardi’s experience has been gained by working on very complex design cases that required the implementation of advanced constitutive links and the development of specific calculation methods to manage design solutions in detail within large three-dimensional numerical models.
An important study concerned the design of a vertical access shaft built in an urban environment with nearby historic buildings on the surface and close to a subway line with masonry lining. The three-dimensional modeling of the shaft allowed to optimize the excavation method and the dimensioning of the supports, so that the subsidence induced on the surface and on the existing line respected the contractual limits.
In this context of underground stations, particularly noteworthy is the project of an underground interconnection station in the 8th arrondissement of Paris. The cavern is located at the intersection of existing underground structures, which cross at three different levels, requiring three-dimensional numerical modeling. The evaluation of the interference between excavations and existing structures was possible – in a large-scale model – by applying a calculation method allowing to relate the design details of excavation and support to the settlement containment strategy.
|Alliance - HSL Interconnection Station||References_5377|
The EOLE (Est-Ouest Liaison Express) project consist in the extension of the RER (Réseau Express Régionale) Line E from the current terminus station of Haussmann Saint-Lazare in Paris to Mantes-la-Jolie in the west of Ile-de-France.
The project involves the construction of a series of underground structures in a particularly densely built area with underground buildings and infrastructures in the 8th arrondissement of Paris. The underground works include the interconnection to the west of the Haussmann Saint-Lazare station, a tunnel excavated by TBM, and other tunnels to the east and west of the Gare de la Défense, located under the CNIT (Centre des Nouvelles industries et technologies).
Lombardi has been entrusted with the final design of the interconnection of the HSL Station with the new line on behalf of the Engineering Joint Venture Alliance, consisting of the construction companies NGE Génie Civil, Guintoli, Demathieu Bard, Pizzarotti, Franki Foundations Belgium and Atlas Fondations.
The construction of the interconnection consists of three main elements. The interconnection itself consists of a series of caverns about 10 m high and between 13 and 20 m wide, extending over 170 m from west to east. A vertical shaft is provided for access to the interconnection area during construction and for rescue operations during operation. The connection between the shaft and the caverns is constructed by access tunnels in a Y-shape.
The complex of these new underground structures is located close to several existing metro lines (L3, L13 and L14). Moreover, the surface above the excavation area is built on, with the presence of historic buildings. Limiting the excavation-induced settlement on the surrounding structures was the most stringent design requirement to be met. The calculation of the interference between the excavations and the existing structures was carried out using three-dimensional numerical modeling.
|Grand Paris - Line 15 South - Segment 2 - Lot T2C||References_6376|
The lot T2C of the Line 15 is situated near Villiers Sur Marne in the south-eastern outskirts of the city. It includes:
- two mechanized tunnels, principal and SMR lines, respectively 4.7 km and
2.2 km long; the main tunnel connects the Noisy Champs and Bry-Villiers-
Champigny stations, while the SMR tunnel allows the connection between the
main tunnel and the maintenance site;
- an interconnection shaft of approximately 180 m (O807), 92 m of which are
characterized by a traditional tunnel;
- two TBMs launch shafts (O802P and O813P);
- seven circular shafts used for evacuation and / or ventilation.
- Geotechnical design
- Detailed and construction design of the underground cavern and of the shafts
tunnel connections (by-pass).
- Analysis of the effects induced by tunnels and station / shafts excavation on
- Design of driving parameters of TBM-EPB (Earth Pressure Balance)
|Extension of Marseille’s metro line n°2||References_6532|
As part of the objective of developing the network of the track-reserved public transport network, the Aix-Marseille-Provence Metropole (MAMP), the Mobility Organizing Authority (AOM) in its territory, wishes to extend the Marseille’s metro network to the South-East.
The extension stretches 4,8km from the station Sainte-Marguerite-Dromel to Saint Loup in the 9th and 10th districts of Marseille with 6 new stations. This extension is accompanied by the creation of a transportation hub at the line’s terminus as well as drawdown measures around each metro station.
The consulting and project management mission covers:
- The setup of the project program;
- The elaboration of consultation with stakeholders supports;
- The assistance in drafting tender documents for the project management of
the operation and legal assistance to the contracting authority.
The mission is realized in joint venture with the following companies:
- Lombardi Ingénierie (leader of the consortium) – Project coordination and
- Geste Engineering – Transport systems and infrastructure equipment
- Vera Broëz – Architecture and urban planning;
- Cabinet Lanzarone – Legal assistance.
|Grand Paris - Line 14 - Execution studies Lot GC02||References_6908|
|Metro Copenhagen Cityringen - Risk Assessment||References_560|
The Copenhagen Metro City Ring is expected to be running in 2018 and will consist of two single tracks in a twin tunnel each approximately 16 km in length. The City Ring includes 17 underground stations (many of them located in the historical centre of the city) with island platforms, 4 cross-over facilities and 3 construction and ventilation shafts for transporting up to 234,000 passengers on an average work day.
In the framework of Damage Risk Assessment for buildings neighboring the excavation sites, the effects of subsidence induced by the construction of deep underground stations were evaluated for the following sites:
- Københavns Hovedbanegård
- Skjolds Plads
- Poul Henningsen Plads
- Gammel Strand
The effect of tunnel-induced settlements was analyzed at Frederisksberg, Rådhuspladsen and Kongens Nytorv for selected important constructions. Most of the structures to be assessed were in fact masonry buildings positioned at short distance from retaining walls and/or located directly above the tunnel alignment.
The excavation processes were modeled by means of finite elements analyses. In general, the soil-structure interaction was taken into account when calculating expected damage to the structures. In order to properly model the soil behavior, advanced constitutive laws were adopted. In some cases, in order to comply with the very strict limitations imposed by the Copenhagen municipality on the tolerated damage, mitigation measures were advised.