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HCMCThe cushion of the Metro N ° 1 viaduct beam that fell from its installation position has been corrected by fitting a new rubber cushion; the entire project will be reviewed.
The information was reported by the HCM City Urban Rail Administration Board (MAUR – investor) on the morning of November 11, after inspecting and evaluating the case with the general contractor and the consultant. The incident occurred on the P14-10 pillar, part of the VD14 viaduct, located near the Coca-Cola slope on the Hanoi highway, Thu Duc district, of the CP2 package (air and depot) Line 1 of the subway (Ben Thanh – Suoi Tien), run by the Sumitomo – Cienco6 (SCC) joint venture.
Metro Line 1 in the section near the Coca-Cola slope after the installation in June. Gia minh.
MAUR said the problem is currently solved by fitting a new rubber pad to keep the bridge girder stable during inspection and determination of the cause. Yesterday, the investor asked the NJPT consortium (the project’s consultant and supervisor) to provide all the case files to verify and review the quality in the tender package.
SCC’s general contractor reported the incident to the investor as “unique, only happened in one position.” However, MAUR requires continuous inspection and strict treatment, so the project must follow the progress and absolutely guarantee the quality of the project. “The project has not been handed over to the investor, so the SCC general contractor will be responsible for the quality as well as the inspection and repair,” said the MAUR representative.
Earlier, in the late October inspection, MAUR found that the rubber bearing (left pillow in the direction of Ben Thanh to Suoi Tien) of the viaduct beam installed 4 years ago fell off. This causes the top rail to fail and disconnect from the bottom bracket system; The concrete of the track cushion in this position is also cracked.
The rubber pillow falls off, causing the bridge beam on the P14-10 to drift. Image: MAUR.
The incident is assessed to have the risk of partial beam bearing fracture when subjected to a strong impact, affecting many other elements. This problem also affects the longevity of the construction and the risk of loss of security when running Line 1 of the Metro.
The bridge support is a piece that connects the span of the bridge to the abutment, acting as a loading platform and reducing the force of the span structure transmitted to the abutment. Depending on the project, the bearing has many different types and designs, it can be made of steel or elastic like rubber, steel …
Metro No. 1 has a total investment of 43,700 billion VND, almost 20 km long, including 2.6 km underground and more than 17 km above. The viaduct section of the route is 14.5 km long. The entire project is now over 78%, of which the CP2 package is 88% by volume. Ho Chi Minh City aims to exploit the project by the end of 2021.
Gia minh
