The Freyssinet Prestressed Concrete Co. Ltd., 6B, 6th floor, Sterling Center, Dr. Annie Besant Road, Worli, Mumbai-400018. Tel. +91-22-43229500 Fax. +91-22-24938461, e-mail-freyssinet@fpccindia.com,http://www.freyssinet-india.com/

The Freyssinet Prestressed Concrete Co. Ltd.

PROJECT REPORT FOR

REPAIRS OF BEARINGS AT DELHI AIRPORT METRO

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INTRODUCTION Delhi airport Metro Express lane a part of the DMRC project was constructed by M/s. IJM

Infraprojects Ltd. This section of the metro lane was commissioned in year October 2010.

At around June 2012, vibrations at curvature locations were noticed by train-motormen and this had

been brought to the knowledge of DMRC higher authorities. Metro lane of this section was

immediately discontinued for traffic and inspection of same was carried out to find the cause. Due to

discontinuation of this section, the transportation system in this zone was affected creating problems

for commuters. Hence DMRC appointed FPCC to complete this challenging job to be completed

within least possible time with quality work.

Action for Remedial Measures:

After inspection, some problems were found with existing bearings. DMRC has decided immediately

to carry out thorough inspection & repairing/replacement of these bearings.

DELHI Airport Metro awarded this job to specialized contractors to execute the repair work of

bearings of the above section. Approx. 86 spans for AMEN03 section-Pier 186 to pier 271 were

lifted and bearings were repaired/replaced by new ones after necessary repair and providing a

suitable solution for same. The challenging feature of this project was to complete the job within the

allotted time with quality work.

Following key-personnel were involved in this project.

Client : M/s. Delhi Metro rail Corporation (DMRC)

Mr. A.S. Bisht

Design Consultant : M/s. Systra International

Mr. Mathews

PMC : M/s. TUV

Mr. Tyagi

Contractor : M/s. The Freyssinet Prestressed Concrete Co. Ltd.

Mr. Sunil Dayal ( General Manager)

Mr. Raja Jawale (AGM-Project In charge)

Mr. N.K.Mehta (Sr. Project Manger)

REFERENCES Following codes & standard were referred for the above procedure of repair work of bearings.

Morth Specification

Relevant Drawings of Bearings & girder sections

Specification of Bearings

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TYPICAL PIER CAP

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PART OF AIRPORT METRO SECTION

REPAIR WORK FPCC inspected one by one girder and observation

details were noted down. Available tolerance

allowed to be maximum 1mm. So we have to

adopt suitable method to replace the bearing with

proper pedestal within allowable tolerance.

Heights and other necessary dimensions were taken

to fix the jacks for lifting.

BEFORE LIFTING & REPAIR

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AFTER LIFTING & REPAIR ACHIEVEMENT

The core achievement of FPCC was the completion of the project with set targeted time, with

due quality work, as per requirement of the DMRC, despite of many challenging and increased

quantum of repair work. There was a space constraint at many locations where special

precautions were taken as per requirement.