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8/10/2019 RFQ Buildings
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METRO BUCAREST: MAGISTRALA 5,TRONSONUL 1: RAUL DOAMNEI – UNIVERSITATE
SECTIUNEA RAUL DOMENEI-HASDEU
FECHA: 04 / 11 / 2011
RFQ TECHNICAL-COMERCIALUNDERGROUND
WORKSDEPARTMENT
WAREHOUSE AND WORKSHOPS TECHNICAL REQUIREMENT Rev.0- Dec 2011 1 de 5
METRO BUCAREST: MAGISTRALA 5,
TRONSONUL 1: RAUL DOAMNEI –
UNIVERSITATE
SECTIUNEA RAUL DOMENEI-HASDEU
TECHNICAL REQUIREMENTSEXTRUCTURAL MODIFICATION
WAREHOUSE AND WORKSHOPS
Rev. 0 . - Dic 2011
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METRO BUCAREST: MAGISTRALA 5,TRONSONUL 1: RAUL DOAMNEI – UNIVERSITATE
SECTIUNEA RAUL DOMENEI-HASDEU
FECHA: 04 / 11 / 2011
RFQ TECHNICAL-COMERCIALUNDERGROUND
WORKSDEPARTMENT
WAREHOUSE AND WORKSHOPS TECHNICAL REQUIREMENT Rev.0- Dec 2011 2 de 5
Project consists of the first part of L5 Bucharest Subway. Consists of two circular
section tunnels 6.075 m length each, and the implementation of all the stations. This
project has been awarded by a joint venture between ASTALDI, FCC CO, DELTA and
BD GROUP.
1.- PROJECT CHARACTERISTICS
1.1.- Geometry
The tunnel is defined due to the next characteristics:
- tunnel length………….…………………………..……… 6.100 m
- Bored length…………..…………………………………..3.782 m
- Ring segment inner diameter……………………….……….5,7 m
- Maximum slope ………………………………………..… 2,10 %
- Mínimum horizontal radius …………………………..….. 200 m
2.- TUNNEL EXCAVATION PROCEDURE
2.1.- Excavation
The excavation of two tunnels will be carried out by EPB shield tunneling
machine suitable for working in soft ground soils due to the bulkhead pressure control
of the tunnel face. When tunnelling in unstable ground, it may be necessary to balance
the pressure inside the cutting head chamber with that of the surrounding soil to provide
a safe environment within the TBM and to minimize surface settlement above the tunnel
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METRO BUCAREST: MAGISTRALA 5,TRONSONUL 1: RAUL DOAMNEI – UNIVERSITATE
SECTIUNEA RAUL DOMENEI-HASDEU
FECHA: 04 / 11 / 2011
RFQ TECHNICAL-COMERCIALUNDERGROUND
WORKSDEPARTMENT
WAREHOUSE AND WORKSHOPS TECHNICAL REQUIREMENT Rev.0- Dec 2011 3 de 5
2.2.- SEGMENT RING DESIGNE
The tunnel line support it is made of concrete precast segment ring, assembled in
TBM due to a segment erector. Concrete ring characteristic are: