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Aerial section of the CP2 package by Joint Venture Sumitomo – Cienco 6 as general contractor – Photo: DUC PHU
On the night of November 10, a leader of the Urban Railways Management Board of Ho Chi Minh City (investor) said that during the inspection of the CP2 package (aerial section and depots) of subway line 1 (Ben Thanh – Suoi Tien) found that the rubber pillow used for the viaduct beam on the P14-10 pillar of the VD14 viaduct segment was unstable and fell off the pillow bed for unknown reasons.
This viaduct is known to have been installed in 2016.
The above problem damaged the previously installed rail. At the same time, the bolt rails associated with the underlying support are removed and the concrete of the rail pad at location VD14 is damaged and cracked. The CP2 package is the general contractor Sumitomo – Cienco 6.
After detecting the incident, the City Railroad Management Board sent an urgent document to NJPT Joint Venture (supervisory consultant) and the general contractor to request a plan to repair and repair the damage.
According to the investor, the incident is more likely to degrade the quality of the construction, that is, it may cause local cracks in the support position of the beam due to the concentrated stress during the impact between the beam and the millstone. pillow. The finished beam installation is subject to torsion due to uneven force distribution due to the rubber bearing falling off the bedrock.
Therefore, there is a great possibility that the bottom plate, the U-beam wall will crack, reducing the bearing capacity and affecting the life of the project, the risk of losing the safety of the train operation when the project put into operation and use. .
Various fares for metro line 1
