BACH DANG BRIDGE AND NEW TECHNOLOGY RECORDS

After more than 3 years of active construction, Ha Long - Hai Phong Expressway and Bach Dang bridge project connecting Quang Ninh - Hai Phong - Hanoi will be officially opened on September 1st.

Bach Dang Bridge and approaching road Project was built on Quang Ninh Province and Hai Phong City, with a length of nearly 5km, 25m wide bridge deck, four-lane design, and a maximum speed up to 100 km/h

Bach Dang bridge is one of the largest bridges in the country and the third of the seven cable bridges that has the most spans the world. The complex construction will be officially put into operation.

The Bach Dang Bridge is nearly 3km long, with reinforced concrete and prestressed concrete is 250m width, 48.4m height, withstand an earthquake at level 8. The bridge has three pillars, pillars the tower is 99.74m high, the tower is 94.5m high with four cable-stayed spans.

It is one of the largest bridges in the country and ranks third among the seven bridges that have the world's highest span, with a total capital of 7.662 billion dongs.

The Bach Dang Bridge is nearly 3km long, with reinforced concrete and prestressed concrete is 250m width, 48.4m height, withstand an earthquake at level 8. The bridge has three pillars, pillars the tower is 99.74m high, the tower is 94.5m high with four cable-stayed spans.

It is one of the largest bridges in the country and ranks third among the seven bridges that have the world's highest span, with a total capital of 7.662 billion dongs.

Bach Dang bridge is also one of the most complicated cable-stayed bridges with 4 continuous spans, but it limits the height of the tower so the angle of stay is very small, requiring more complicated construction techniques than other cable bridges.

VSL engineers and specialists are installing and processing technical equipment at the ends of Bach Dang cable-stayed cable ties

During this period, VSL (Switzerland) is installing the slots Spacing of girders, installation of a monitoring system for monitoring the cable-stayed bridge during construction and operation.

According to Mr. Thai Van Dung - VSL Vietnam Company - Director of Bach Dang Bridge Project, the unit has completed the installation of the most advanced cable system SSI2000 (parallel system SI2000). The final stages such as cutting cables, glue pumps to protect the anchor head, dismantle the floor manipulation system on the pillar tower ... are being rushed to complete the plan.

The installation of SSI2000 cable-stayed cable system (parallel system SI2000) is the most advanced VSL applied at Bach Dang Bridge

"With the cable laying capacity of Bach Dang bridge over 800 tons, with over 144 cable sizes ranging from 31 to 85 cables, this is a massive workload. The construction is difficult when VSL contractors had to face hard situations such as storms, severe weather. However, overcoming all difficulties, all workers and engineers of VSL focused on fulfilling the targets set by the People's Committee of Quang Ninh province and BOT Bach Dang bridge owner. " Said Mr. Thai.

In this project, the first technology of subjacent girder casting machine was particularly applied, with the advantage of up to 9.6m of cast length, up to 465t of castings, designed by VSL. public and technology transfer.

In addition, VSL also provides installation of bridge bearings, expansion joints of the main bridge, installation of monitoring system monitoring the cable-stayed in the process of construction and exploitation.

Treatment of expansion joints on Bach Dang Bridge According to experts, Bach Dang Bridge is the largest cable-stayed bridge in Vietnam with a length of 3.5 km, especially the main part of Bach Dang bridge was basically completed to wait for the day opening for traffic. Mr. Huynh Nhu Vu - Commander of Trung Nam E&C Contractor at Bach Dang Bridge Project said that the contractors are completing the auxiliary processes such as lighting, traffic safety signs. At the same time, speeding up the dossiers and procedures on fire prevention and fighting, traffic plans to ensure the goal of clearing Ha Long - Hai Phong expressway before the National Day of September 2.

Bach Dang bridge has three tower piers, the center one is 99.74m high, the others on both sides are 94.5m high with four cable spans.

"Now the bridge is basically finished and will be inaugurated about in a week, the remaining work now is only finishing the last item. Road painting, manhole installation, lighting are being functioned to finish to complete the project on time as the general contractor and construction units committed" affirmed Mr. Huynh.

On August 24, the Country Council for Pre-acceptance Test of Construction Projects approved the Ha Long-Haiphong Expressway, including the project of connecting Ha Long City with Bach Dang Bridge and Bach Dang bridge project.

According to Deputy Minister of Construction Le Quang Hung - Vice Chairman of the Council for Pre-acceptance Test of Construction Works agreed with members of the Council on the quality and design of the works, that it has the qualified conditions to open Ha Long - Haiphong Expressway on 9/1/2018.

The Country’s Council for Pre-Acceptance Test of Construction Works requires the investors and contractors of the two projects to quickly complete the relevant legal procedures and soon complete auxiliary items such as lighting, traffic safety signs, fences to ensure the progress.

Completion of this highway, the distance between Halong and Hai Phong was shortened to 25 km, instead of about 70 km as before.

When the project is put into operation, it will contribute to the completion of the connection linking the northern dynamic economic region (Ha Noi - Hai Phong - Quang Ninh) and shortening the distance from Ha Long to Hanoi from 180km compared to the previous distance of 130km, the car travel time reduced from 3.5 hours to 1.5 hours.

In addition, Haiphong - Ha Long expressway also contributes to reducing the vehicle traffic on the National Highway 10 and National Highway 18A.

According to Phi Long

VOV