Section of Solntsevskaya metro line Pykhtino station - Vnukovo station | Mosinzhproekt Institute LLC
The section of the Solntsevskaya metro line was extended from Rasskazovka station by Pykhtino and Vnukovo stations to the airport of the same name.
Pykhtino station is located on a difficult terrain: the platform is simultaneously embedded in the slope of the Borovsky Highway embankment from different sides, and passes into the metro bridge across the Likova River, and has panoramic glazing overlooking the shore. Above the platform itself, there is a square with a spectacular curved lobby and a model of the Tu-144 supersonic airliner above the escalator area.
Vnukovo station is completely underground. It is connected by a passage to the airport building and exits to Aeroexpress trains. This is the first in There is a metro station in Russia as part of an existing airport, from which you can get to Moscow from an airplane without going outside.
The construction of the site was completed in an extremely short time. To prevent errors on the construction site, it was decided to implement station models and link design solutions in BIM.
Due to the tight deadlines and the construction that has already begun, 3D coordination was chosen as the main application scenario for CIM.
Special attention was paid to:
- Checking the attributes that identify belonging to the system and the room
- The position of the final equipment and finishing of the station complexes
- Communication tracing tolerances (margins, bending radii, slopes)
- Intersection of service and access areas with structures and communications
- Modeling of large-section cable products to check their quantity and perform penetrations
The collision matrix
3D coordination was performed by regularly performing 252 collision checks, of which:
- On collision: 231
- For duplication: 21
The inspections were grouped by discipline and further broken down according to the functional characteristics of construction and engineering systems. The inspection tolerances ranged from 1 to 20mm. All detected collisions were analyzed by the developers of the documentation.
In accordance with the selected scenario, the Customer developed the requirements for the information model (ITM), which included:
- Collision matrix with tolerances
- LOD and LOI detail matrices
- CIM transmission formats and deadlines
The project also used laser scanning to track deviations from the design data to obtain an executive CIM.
Based on the information requirements of the Customer, an Information Modeling Plan (IMP) was developed.
A special feature of the metro facilities is the large length of cables (about 800 km at each station), many of which have a large cross—section. In order to accurately calculate the expensive large-section cable, the task was set to simulate them. The high degree of detail of the model made it possible to work out particularly complex nodes of low and medium voltage cable passages. Our own automation tools were used to model cable products.
The elimination of collisions during the installation of engineering systems of metro facilities is achieved by detailed study of routes and their fasteners, as well as modeling of service areas.
