infrastructure:Layout 1         18/11/10        10:24      Page 1  70    INFRASTRUCTURE        Paulo Jorge Ribeiro Corte R...
infrastructure:Layout 1          18/11/10        10:25      Page 2                                                        ...
infrastructure:Layout 1         18/11/10        10:25        Page 3  72    INFRASTRUCTURE                                 ...
infrastructure:Layout 1        18/11/10        10:26      Page 4                                                          ...
Upcoming SlideShare
Loading in …5
×

European Railway Review Issue 6 2010

990 views
895 views

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
990
On SlideShare
0
From Embeds
0
Number of Embeds
6
Actions
Shares
0
Downloads
10
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

European Railway Review Issue 6 2010

  1. 1. infrastructure:Layout 1 18/11/10 10:24 Page 1 70 INFRASTRUCTURE Paulo Jorge Ribeiro Corte Real de Oliveira Project Manager, Neopul Deploying Neopul’s know-how in Dublin This report describes Neopul’s work on the Luas b1-400 extension of the Green Line from the Sandyford depot to Cherrywood industrial estate, which was opened to the public on 16 October 2010. The green line was the existing connection embedded slab track system with the different track types were used together with from Dublin city centre (St. Stephen’s Green exception of the referred Sandyford Stop, the necessary solutions to cater for the Station) and the recent developed Sandyford which was extended with a pre-casted system respective transitions, which were: area with an extension of 9km. The scope of the put on top of the existing ballasted track Approximately 3,500 linear metres of single B1-400 extension developed by Neopul, (Bodan System). Upon casting the panels which ballast track – built with the supply of included the expansion of the existing line with formed the system, special care was taken in 10,100 tonnes of calibrated ballast, 4,000 more 7.5km towards the south from the consideration once there was a signalling loop monobloc sleepers with 8,000 Vossloh existing Sandyford Stop to Brides Glen. This located on the extended area. On this location, fastening system type Skl 14, 343 tonnes of contract also included the expansion of the the respective panels not only had to have a vignole S49E1 rails, 12 turnouts with point Sandyford Depot (2km of single track) in order recess to cater for the loop, but also the rebar heating system and special track to cater for the new vehicles. had to be replaced by glass fibre cables to equipment including twist rails, normal Neopul’s work scope included the design, ensure the same strength and durability and isolated rail joints and transition rails construction, testing and commissioning of without compromising or interfering with the to allow a perfect transition between the approximately 17km of single track of light rail loop operation. vignole and grooved sections. line system with 1,435mm gauge. The Stops built were Sandyford (existing); Approximately 8,400 linear metres of single Central Park; Glencairn; The Gallops; embedded track – built with the supply of Stops Leopardstown; Racecourse; Carrickmines; 11,000 cubic metres of C40/50 concrete, The Luas B1-400 contract included the execution Brennanstown; Laughanstown; Cherrywood 1,175 tonnes of rebar, 118 tonnes of rubber of 11 stops and the extension of the existing and Brides Glen. encapsulated grooved Ri54 rails and 865 Sandyford Stop from 40m to 53m as well as the tonnes of encapsulated grooved Ri59 rails, increase of its platforms from two to three. Track types one encapsulated Ri54 grooved rail All stops were executed in a concrete On the materialisation of the track, three diamond crossover with point heating EUROPEAN RAILWAY REVIEW ISSUE 6 2010
  2. 2. infrastructure:Layout 1 18/11/10 10:25 Page 2 INFRASTRUCTURE 71 Detail of the extension of Sandyford Stop with the Bodan system system, special track equipment, complete special track equipment including twist Approximately 2,500 aluminothermic rubber encapsulation of all the system, rails, expansion joints and normal and weldings including ultrasonic testing of 12 pairs of encapsulated grooved Ri54 isolated rail joints every single one. expansion joints, embedded transversal and longitudinal drainage and a system for derailment prevention on the structures (bridges and tunnels) – tram arresting devices. Approximately 3,200 linear metres of single plinth track – built with the supply of 1,200 cubic metres of concrete, 91 tonnes of rebar, 314 tonnes of vignole S49E1 rails, 12 pairs of vignole rail bridge expansion joints, 10,000 Vossloh fastening systems type 336 and special track equipment including twist rails, normal and isolated rail joints and transition rails to allow a perfect transition between the vignole and grooved sections Approximately 1,800 linear metres of single ballast track inside the Sandyford Depot to increase the number of stabling lines – built with the supply of 7,000 tonnes of calibrated ballast, 2,000 monobloc sleepers with 4,000 Vossloh fastening system type Skl 14, 177 tonnes of vignole S49E1 rails, 10 Preventive grinding on the plinth track turnouts with point heating system and www.europeanrailwayreview.com EUROPEAN RAILWAY REVIEW ISSUE 6 2010
  3. 3. infrastructure:Layout 1 18/11/10 10:25 Page 3 72 INFRASTRUCTURE rubber encapsulation to the rails on a controlled environment, before forming the 18m track panels put together with the Rheinfeder system. Besides the track, there was also the following installed: In the vicinity of the Sandyford Stop, one trailing non-motorised switch, three set of motorised facing switches and four sets of non-motorised points set for spring operation to facilitate normal reversing operations at the stop On the Sandyford Depot, one trailing non- motorised switch and nine sets of motorised facing switches operated by the tram drivers Two trailing non-motorised switches and a track crossover located between the running lines in the vicinity of The Gallops and The Carrickmines tram stops (two in each) for emergency and occasional operational use Cherrywood viaduct. Bride Glen’s Stop, at the end Track work description The ballasted track was built essentially in areas separated from the urban regions, whilst the embedded track was built in areas shared with the traffic (road crossings) and in urbanised areas or where urbanisation is planned. The plinth track was installed over concrete structures (viaducts and bridges) constructed in previous contracts. The ballasted track was positioned and levelled thanks to rail road excavators equipped with two independent tamping heads with variable depth and positioning control, able to tamp track and turnout sleepers, together with mechanic rail jigs. The plinth track was positioned thanks to the use of levelling jigs and alignment push pull props, whilst on the embedded track a pre mounted sacrificial system formed from metallic sleepers and levelling bolts (Rheinfeder System) was used. This system was entirely assembled on a compound built for this purpose, were a covered marquee with an Leopardstown viaduct area of 2,500m2 was created to allow gluing the EUROPEAN RAILWAY REVIEW ISSUE 6 2010
  4. 4. infrastructure:Layout 1 18/11/10 10:26 Page 4 INFRASTRUCTURE 73 In order to overcome the longitudinal movements imposed by the joints between the land and the structures, 24 expansion joints were supplied and applied. All rail profiles were joined with aluminothermic weldings and every single one was tested ultrasonically. Tension releasing was performed to all non embedded track. At the end of the construction but before gauge run, preventive grinding was applied to the entire line. OCS Regarding the OCS system and under this contract, Neopul constructed the complete Overhead Conductor System to be operated at a nominal tension of 750 Vcc on the complete 17km of single track including OCS poles (lateral & axis), bracket arms, cross span and stitches, pole tensioning equipment/mechanism, wall fixings and building anchors, overhead line equipment including conductor and feeder system including the connection to the OCS. On the Sandyford Depot, Neopul also constructed the Overhead Conductor System sectioning, including splitting the OCS power feeding the PIT and SLAB lanes into two separate sections per lane and all necessary changes to integrate the new system to the old one including Poles, suspensions (GRP bracketarms), anchoring, section insulators and contact wire. Besides the overhead, Neopul’s scope also included the materialisation of the feeder cables and return traction along all the track extension, including Trackside Distribution Cabinets and Track Disconnector Switches OCS construction on Leopardstown viaduct ensuring a perfect interface with the existing Luas system. A set of scissor points in advance of the Leopardstown Viaduct – over the M50 All work was done ensuring the Brides Glen terminus comprising one set of Highway compatibility, interoperability of the tram motorised facing switches and three sets of Carrickmines Viaduct – over the M50 services with existing Luas infrastructure and non-motorised points set for spring Highway according with the maintenance requirements. operation to facilitate normal reversing Glenamuck Underpass – under operations at the stop. Glenamuck Road Spine Road Tunel – under a future Paulo Jorge Ribeiro Corte On the Cherrywood viaduct on the track development area Real de Oliveira terminus, besides the construction and Cherrywood Viaduct – over the R118 Road. Paulo Jorge Ribeiro Corte Real de Oliveira has a Degree in Civil concrete sealing of the track, Neopul also Engineering which he achieved from applied imprinted black concrete on the Due to the low temperatures during the Irish the Faculdade de Engenharia da Universidade do Porto. Since May surface, white on the walkways. winter, point heating systems were installed in 2007 until August 2010, he was Neopul’s Project Manager of The track crossed the following structures: all turnouts except on the emergency the design and build of track and overhead conductor system Brewery Road Viaduct – over the Brewery diagonals, in order to defrost the points of the recently opened Luas Green Line extension from Sandyford to Cherrywood. Road roundabout whenever necessary. www.europeanrailwayreview.com EUROPEAN RAILWAY REVIEW ISSUE 6 2010

×