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Underground Metro Structures

CENTRAL SECRETARIAT- BADARPUR  CORRIDOR, NEW DELHI
CENTRAL SECRETARIAT- BADARPUR  CORRIDOR, NEW DELHI
The 5.42 km section comprising Contract BC-24 of Delhi Metro is constituted 3 nos. underground stations (Khan Market length 239m width 20m, JLN Stadium length 300m width 20m and Jangpura length 285m width 20m ) and cut and cover as well as bored tunnels were constructed in extremely difficult and sensitive areas. The stations were constructed generally by “top-down” construction. The Jangpura station is located below the flowing waters of the Nallah Drain. The launching and retrieval shafts formed a part of the station structure except near Udyog Bhawan where a full-fledged 60m long launching shaft was installed in the geologically difficult rocky strata which is sloping both transverse to as well as along the alignment.

Credit:
Client: Delhi Metro Rail Corporation
Contrator: ITD-ITD CEM JV
Structural Consultants: Tandon Consultants Pvt Ltd
CENTRAL SECRETARIAT-BADARPUR CORRIDOR, NEW DELHI
CENTRAL SECRETARIAT-GURGAON  CORRIDOR, NEW DELHI
CENTRAL SECRETARIAT-GURGAON  CORRIDOR, NEW DELHI
The 3.45 km section comprising Contract BC-16 of Delhi Metro is constituted of 4 nos. underground stations (Race Course, Jorbagh, INA and AIIMS) and tunnels. All the stations were constructed by cut and cover method using “top-down” method. The length of each station is 318m & width is 21m including 20m workshaft areas of both ends for launching & retrieval of tunnel boring machines. The stations consist of island platform with trains on both sides.

Credits:
Client: Delhi Metro Rail Corporation
Contrator: CEC-SOMA JV
Structural Consultants: Tandon Consultants Pvt Ltd
CENTRAL SECRETARIAT-GURGAON CORRIDOR, NEW DELHI
CHENNAI METRO UNDERGROUND PACKAGE UAA-01
CHENNAI METRO UNDERGROUND PACKAGE UAA-01
Package -1 of Chennai metro consisting of 5 UG stations and cut and cover ramp besides Chennai Central which is an interchange station, tunnel for The North South and East West Lines. The stations involve “Top down construction techniques” of construction. TBM launching and retrieval shafts are part of stations.

5 UG Stations
1. Chennai Central
2. High Court
3. Mannadi
4. Washermanpet
5. Egmore
CHENNAI METRO UNDERGROUND PACKAGE UAA-01
CHENNAI METRO UNDERGROUND PACKAGE UAA-05
CHENNAI METRO UNDERGROUND PACKAGE UAA-05
Package -5 of Chennai metro consisting of 4 UG stations and cut and cover ramp. The stations involve “Top down construction techniques” of construction. TBM launching and retrieval shafts are part of stations. 2 of the stations are below roads and involve temporary steel decking at road level for traffic movements.

4 UG Stations
1. Thirumangalam Station
2. Anna Nagar East
3. Anna Nagar Tower
4. Shenoy Nagar
CHENNAI METRO UNDERGROUND PACKAGE UAA-05
DELHI METRO RAIL CORPORATION - CC18 : EARTH EXCAVATION BELOW STRUT LEVEL
DELHI METRO RAIL CORPORATION - CC18
4 UG stations including Launching and retrieval shaft at

a. Bhikaji Kama Place (to be designed for loads of 5 floor of PD in future),
b. INA (with station above the running tunnels of BC-16),
c. Sarojini Nagar (on road station) and
d. South Extension (on road station)
Ramps and cut and cover
2 cut and cover ramps at INA station crossing, where TBM is not possible
1 cut and cover ramp at Bhikajikama place
Intervention shaft between South extension and Lajpat Nagar


DELHI METRO RAIL CORPORATION - CC18 : EARTH EXCAVATION BELOW STRUT LEVEL
DELHI METRO RAIL CORPORATION - CC-24: VINOBAPURI STATION
DELHI METRO RAIL CORPORATION - CC-24
Special Features of the Project

a. Flyover in the vicinity (9m away from D-wall)
b. Rock level available at varying depth 6m to 14m
c. 1m thick Diaphragm wall to be installed
d. Special Provisions for supporting utilities during construction

DELHI METRO RAIL CORPORATION - CC-24 : VINOBAPURI STATION
DELHI METRO RAIL CORPORATION - CC: 27 - DESIGN OF (5 STATIONS)
DELHI METRO RAIL CORPORATION - CC: 27
Construction of 5 UG Station & Ramps (Phase-III)

Stations
a. Vasant Viihar Station with bottom of construction on rocky strata
b. Munirka, R K Puram, IIT stations are all off road stations
c. Hauz Khas station is very deep (36m) as this is an interchange station with earlier existing station of phase II 1m thick D-wall used


Ramps and Cut & Cover
a. Ramp of length 265m near Shankar Vihar Metro station

DELHI METRO RAIL CORPORATION - CC-27 - TOP DOWN CONSTRUCTION
DETAILED DESIGN CONSULTANCY SERVICES FOR VIADUCT CORRIDOR – EAST-WEST
DETAILED DESIGN CONSULTANCY SERVICES FOR VIADUCT CORRIDOR – EAST-WEST
About MEGA
Detailed Design Consultancy Services for Viaduct Corridor – East-West ( Thaltej Gam Ch -405.000 to Ramp start (West) of UG Ch 7510.000 and after Ramp End (East) Ch 14080.000 to Vastral Gam Ch 20126.453 all elevated Via-Duct portions including River Crossing) for Metro–Link Express for Gandhinagar & Ahmedabad (MEGA) Company Ltd
DETAILED DESIGN CONSULTANCY SERVICES FOR VIADUCT CORRIDOR – EAST-WEST