The Bangalore Metro Rail Company Restricted (BMRCL) Friday knowledgeable that it has efficiently accomplished the erection of 4 composite metal girders over the railway observe close to Rainbow Hospital, between the ISRO and Doddanekkundi metro stations. The operation, which was carried out between January 27 and 30, was a vital milestone within the ongoing Section 2A and 2B metro development.
The newly erected 65-metre-long girders are designed to accommodate the prevailing railway line and future railway tasks below Okay-RIDE. The Commissioner of Metro Rail Security (CMRS), Southern Circle, had accredited the launching scheme and non permanent staging earlier than the work commenced.
“The challenge posed important challenges because of the lack of a service street and restricted entry by way of the railway underpass. Moreover, the street at this location crosses the railway observe at an angle, additional limiting crane operations. Below regular circumstances, two 400-500 MT cranes could be deployed on both facet, necessitating a full street closure. Nevertheless, to minimise visitors disruption, BMRCL used a single 700 MT crane and divided the 65-metre span into three sections – two 14.5-metre segments on both facet and a central 36-metre portion over the railway observe,” stated a press launch issued by the BMRCL.
BMRCL in its press assertion additional stated that the newly erected railway span measures 65 metres in size, with a complete weight of 575 MT, comprising 4 girders, every with a depth of three.4 metres.
• Depth of every girder: 3.4 metres
To make sure the secure erection of the girders, each street and railway visitors had been briefly blocked. The Bengaluru visitors police permitted night-time street closures from 9.00 pm to six.00 am, diverting visitors onto the other carriageway with non permanent barricades. The South Western Railway granted a rail visitors block from 11.30 pm to three.30 am, with railway engineers overseeing security measures.
The primary 36-metre girder was put in on January 27, adopted by two girders on the evening of January 28, and the ultimate girder on January 29. “The operation required exact alignment at a peak of 14-15 metres with zero tolerance for deviation. A backup crane was saved on standby for emergencies,” stated a BMRCL supply.
BMRCL acknowledged that the remaining work – together with the erection of the ultimate 14.5-metre girder portion, deck slab, and parapet – can be accomplished within the subsequent two months, after which all street obstructions within the space can be eliminated.
