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Old May 27th, 2016, 10:19 PM   #41
Salvatierra
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Some technical information of the RER network proyect that i broughted for the argentinian forum some days ago during the last public consultation in which I was present...

a) max. Frequency target: 3 min.

b) All infrastructure should be thinked so it can be uses by the Chinese trains of the Roca line.

c) The contracting system is elevation adjustment (items of work are paid according to% complete)

d) Ventilation and signage were removed from the main contract, ventilation because the governvemt did not want a company to impose the facilities with which they had to equip the rest of the work (as a homogeneous system is sought) and railway signaling by the fact that if or whether to subcontract with a company whose name I forget and design signal systems and traffic lights retirement and constitution AKA 'pupitres' in railway jargon because apparently they are the only you can modify it without F...ck up the system, I found a curious case of technological dependence that could not help but compare with what happens on line B with CAF 5000.

e) No funds to international banks asked for the work because the negotiations had been delayed 2 or 3 more years, all the work is financed with funds from the treasury.

f) The term seem quite optimistic, 30 months + 3 months of testing

g) The level of interference should be minimal, practically you can not stop the traffic on Av. Brazil and much less in the surrounding streets.

h) That thing we ever joke obout, that the planes of underground infrastructure in the city were lost during the privatization of 90 is completely true, conducting surveys found a sewage pipe of 1.10 meters diameter, in the area of ​​the future station Constitution that no one had idea that it existed.

i) option came to be adopted by 3 sets of tunneling, Austrian, Belgian and German, here I found it curious the reaction of a businessman who said he worked on the extension of the line B, because it suggested that they were '' forcing '' using the Austrian method ( I guess because the other one may be more expensive) and said he did not agree because he believed that this method had caused many accidents in Buenos Aires, Bussi replied that the company is the one who had responsibility for the safety of the workers ...

j) The state anticipates an extra contract to remove contaminated soil if found during soil studies.

k) is not considered to be problems with the future route of the line F (yes, I was talking about the F as real and concrete) because F has more room to pass, however the trace of the RER was more 'rigid '' and their options were more limited

l) Although the government havent set a place to put al the dirt withdraw from the work ...

m) There are several attack wells aimed at making the tunnel (1 every 300m + o-) for security matters

n) The extraction capacity of the wells must be at least 40m3 / hc / u interference as I said before, should be minimal, it was said that at one point thought to have done and London brought a gantry crane to remove land and not occupy much space in the option area but I remain dismissed as too expensive (as always).

o) Apparently the earth pressure in that area is quite lower than the regulatory so it would have a kind of '' permission '' by the state to use the actual data despite indicating the regulations.

p) the maximum slope of the track is 18/1000 and the curvature radius is quite closed (300m) this also goes against other legislation that refers to surface railroads in plains that date from the 70's so there is also a '' permission '' to bypass this rule to be impracticable underground.

q) The first stage is the Constitution because the South Conurbano is the largest issuer of passengers, besides that already has part of modernized services (electrification of the Roca) and because it aims to improve the quality of travel of people of low resources coming from that area.

Well that's all relevant Part of Constitution itself, you see the long-term idea is to extend the viaducts of San Martin, North Belgrano and South Belgrano and also mentioned that when the RER reach Retiro several ways to pass to be used exclusively by the RER because the frequency does not allow for mixed use and therefore later was going to have to do a viaduct for a way more (I found little) from Retiro to Palermo to compensate

And this did not understand it at all because it explained everything well in the air and a lot with the RER you have nothing to do but it seems that in the future they think reform the station Belgrano, making two platforms more and bitrochando half some ways to get traffic the FF.CC. Urquiza.

These are some of the images to slides that are now public access but until two days ago we had only those who had attended the meeting.


For those who want tho know more, you can find more ''extra'' non technical info of this proyect at my original post (yes, it's in spanish..., but surprisingly it's traslated pretty decently by some online translators)...
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Old June 14th, 2016, 03:39 PM   #42
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From Railway Gazette:

Quote:
http://www.railwaygazette.com/news/i...milestone.html

Berazategui is latest Roca milestone
14 Jun 2016



ARGENTINA: Electric services began carrying passengers between Quilmes and Berazategui on June 13, completing the latest phase of the programme to electrify the Roca commuter route between Buenos Aires and La Plata at 25 kV 50 Hz.

Passengers from Berazategui can now reach Buenos Aires in 34 min. Completion of electrification between the federal capital and La Plata, expected by the end of 2016, will cut the end-to-end journey time from 80 min to 55 min

...
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Old July 6th, 2016, 10:08 PM   #43
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Commuter rail projects for years to come

Soon the government is going to announce an investment of US$ 14 billions mainly on the urban rail network of Buenos Aires metropolitan area (Link to the source in Spanish). We are discussing the project details on this thread and this other...



This is an old video, recently we learned that the technical group at the Ministry of Transport is making many changes to the project!
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Old July 6th, 2016, 11:45 PM   #44
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First anniversary of the CSR EMUs for 25 kV AC overhead line

A recent pic of a CSR trainset on the Roca Line:
Quote:
Originally Posted by Maxem View Post
These chinese railcars started to run today exactly one year ago and they are behaving very well until now!
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Old July 10th, 2016, 01:36 AM   #45
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Linea Belgrano Sur:




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Old July 10th, 2016, 02:11 AM   #46
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Quote:
Originally Posted by DanielFA View Post
A recent pic of a CSR trainset on the Roca Line:

These chinese railcars started to run today exactly one year ago and they are behaving very well until now!
What are some of the recent problems with them?
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Old July 10th, 2016, 03:54 AM   #47
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Quote:
Originally Posted by DanielFA View Post
A recent pic of a CSR trainset on the Roca Line:

These chinese railcars started to run today exactly one year ago and they are behaving very well until now!
Nowadays, Chinese products have good quality.
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Old July 10th, 2016, 08:46 PM   #48
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Yes, but unfortunately we're experiencing many problems with Chinese rolling stock in other railways. However is our fault because the infraestructure isn't good and there are some operational errors that impair the performances of the vehicles...
Quote:
Originally Posted by Nexis View Post
What are some of the recent problems with them?
These cars specifically haven't any problem. They are running well only on two of the four branches of Roca Line (to Claypole and Berazategui) because they aren't equipped from factory with the Japanese ATS installed in the other two branches electrified in the 80s (the ones to Ezeiza and Alejandro Korn). But recently Japanese technicians came to Argentina and started to install the required on board devices and test these trainsets on the ATS secured tracks:
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Originally Posted by tortoncho View Post
Quote:
Originally Posted by viaducto15 View Post
Quote:
Originally Posted by viaducto15 View Post
Here is a map showing the branches:



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Old September 30th, 2016, 04:43 AM   #49
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Argentina plans USD 14bn investments in metropolitan rail transport

Argentine Ministry of Transport plans to invest USD 14bn in developing the rail infrastructure of Buenos Aires Metropolitan Area (AMBA). Until 2023, AMBA’ s 851 km long rail network will undergo major modernisation works[...]

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Old October 13th, 2016, 06:46 PM   #50
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The Sarmiento railway conversion to underground line began yesterday

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Originally Posted by Nsch View Post
BUENOS AIRES

SOTERRAMIENTO LINEA SARMIENTO



- El día de hoy comenzaron las obras que transformaran 33km de vías a nivel en subterraneas, entre Estación Once y Haedo.








Video








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Old October 13th, 2016, 06:52 PM   #51
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From the Argentine Forum

Quote:
Originally Posted by DanielFA View Post
Algunas capturas del video:



MM apretando el pulsador de arranque de la máquina:



Vistas desde un drone:









Arrancando:





Comenzando a extraer material:





Humareda:





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Old October 13th, 2016, 10:29 PM   #52
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Just a correction...

Quote:
Originally Posted by Tågälskaren View Post
Quote:
Originally Posted by Nsch View Post
That map is just plain wrong! The tunnel will be build between Caballito and Castelar:



The TBM will dig between Haedo and Caballito (red) and the section between Haedo and Castelar (fuchsia) will be built with C&C and NATM. The tunnel will have only two tracks and be electrified firstly with third rail (the actual power supply system of the Sarmiento Line) but is designed to install an overhead line (the japanese 25 kV AC system of the Roca Line planned as the standard for the future) on a second stage...

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Old October 13th, 2016, 11:48 PM   #53
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Railway segregating major projects


The Sarmiento Line Tunneling is one of the four next mayor projects in order to have all the railway routes segregated on the dense urban area of Buenos Aires city, while the other three are going to start next year. Those projects are about three big viaducts or elevated sections for the Mitre, San Martín and Belgrano lines. The first will be the one for the Belgrano Line and will be built between Plaza Constitución and Sáenz (at Pompeya quarter):



The second will be built for the San Martín Line between Palermo and Paternal as an extension of the existing elevated section between Recoleta and Palermo:



The last one will be built for the Mitre Line between the Palermo Racecourse and Belgrano as an extension of the existing elevated section between Recoleta and the racecourse:



The four projects seen altogether (the tunneling is bigger because it's meant to solve the problems of the urban barrier generated by the tracks on the highly populated West Corridor):



This is being complemented since some years by the construction of hundreds of under and overpasses and are expected a hundred more of them in the densest areas of the suburban ring around the city...

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Old October 14th, 2016, 08:29 PM   #54
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Today the Government launched officially the San Martín Line Elevation project:



Only for reference, when it says Humboldt y Aguirre points to this street intersection (and the same for Concepción Arenal y Girardot)...
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Old October 14th, 2016, 11:28 PM   #55
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Future elevated Chacarita station




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Old October 20th, 2016, 07:38 AM   #56
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Buenos Aires has the same rail gauge with Kolkata - i,e, broad gauge, but the main difference is Buenos Aires uses 3rd rail current collection on suburban railway, which is even not imaginable to us. How much safe it it there? It means 3rd rail on surface train line!!!!!
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Old October 20th, 2016, 11:49 PM   #57
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Four of the seven suburban lines have the same gauge as in Kolkata because Argentina (and Chile too) uses the Indian Broad Gauge (5 ft 6 in or 1676 mm). Only two of the broad gauge railways, the Mitre and Sarmiento lines have third rail because they were electrified respectively by the former Central Argentine Railway and Buenos Aires Western Railway British companies between 1916 and 1923. Overhead lines were very rare in railway electrification on those years... The Roca line was later electrified in the 80s by a Japanese holding using shinkansenesque 25 kV AC overhead line and they stated that it should be the standard for the entire rail network.

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Old October 20th, 2016, 11:53 PM   #58
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Quote:
Originally Posted by DanielFA View Post


Four of the seven suburban lines have the same gauge as in Kolkata because Argentina (and Chile too) uses the Indian Broad Gauge (5 ft 6 in or 1676 mm). Only two of the broad gauge railways, the Mitre and Sarmiento lines have third rail because they were electrified respectively by the former Central Argentine Railway and Buenos Aires Western Railway British companies between 1916 and 1923. Overhead lines were very rare in railway electrification on those years... The Roca line was electrified by a Japanese holding using shinkansenesque 25 kV AC overhead line and they stated that it should be the standard for the entire rail network.

I just wanna add that the Urquiza Line use 3rd rail too.
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Old October 20th, 2016, 11:54 PM   #59
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Third rail is also used on some commuter-train lines in the suburbs of New York City, some of which have surface crossings. Not an ideal situation from a safety perspective, as the 2015 Valhalla accident demonstrates.
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Old October 20th, 2016, 11:55 PM   #60
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The LIRR Main Line was electrified from 1910 to 1926 with 750 V DC third rail, so it's the same as here!
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How much safe it it there? It means 3rd rail on surface train line!!!!!
Sorry, I forgot to answer your question! It's very unsafe but for a change to catenary we must wait until the diesel operated lines are electrified...
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