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Location of the rubber pillows – Photo: LE PHAN
The Ho Chi Minh City Urban Railway Board of Directors (Investor of Subway Project No. 1 Ben Thanh – Suoi Tien) just sent a letter to the Sumitomo – Cienco 6 joint venture regarding the case of rubber bearings on the unstable viaduct. fell off the bearing stone on pillar P14-10 of the CP2 package because this association was the general contractor on October 30.
According to the investor, the previous incident not only affects the progress of the construction of the CP2 package, but also affects other tender packages of metro line 1 when it is in the sprint stage to the destination.
The investor also said the general cause of the general contractor’s report gave an incomplete and unconvincing explanation.
Regarding this incident, on December 10, NJPT Supervision Consultant (investor representative) also sent a warning letter to Sumitomo Corporation regarding the bridge failure, as well as negligence or irresponsibility in the role. is the main company of the CP2 package.
Through inspection records in 2015, it was shown that the approved bridge bearing weight is 126.1kg, but actually installed in the project is only 117kg. Therefore, the investor doubts the actual quality of all bridge bearings installed on site, and at the same time requests the general contractor to provide all the test results to prove that the installed bearing meets the quality. technical requirements.
Therefore, the Urban Railways Management Board requested the joint venture to provide the related documents to present to the City Bridge Support Verification Working Group for consideration.
As Online youth reported, on October 30, through periodic field inspection, the investor discovered that a rubber cushion used for the viaduct girder at the VD14 viaduct segment pillar position was unstable when falling from the pillow millet. The viaduct was built in 2016. This is the location of the CP2 package (aerial section and tanks) by the Sumitomo – Cienco 6 Joint Venture as general contractor.
The bridge support is a part that connects from the bridge girder to the abutment, which acts as a load bearing and reduces the force of the span structure transmitted to the abutment. Bridge bearings help connect less elastic beams and stirrups, creating elasticity …
Regarding the above incident, the State Council for the Acceptance of Construction Works requested the HCM City Urban Railways Administration Board to urgently review the condition of all bridge support in the same structural locations above. complete line.
The city has also created a task force to ascertain the cause of the above incident.
