To build the country's first sea interchange
The bay bridge in addition to section 26.75 km of the sea, there are two beautiful sea interchange overpass, respectively is red island interchange overpass and Li Cunhe interchange overpass. Two bridge, only red island interchange overpass completely located on the sea, it is the first offshore intersection. Li Cunhe interchange overpass is only half is located in the sea, and the other half of land in the highway.
Overpass the subject has been completed, now red island overlooking from the sea, lies the magnificent scene of the jiaozhou bay bridge have been rendered. Red island interchange overpass using hundreds of bridge pier, the span of each bridge pier is 50 meters, covers an area of more than is currently using the connection of the qingdao-yinchuan highway, heilongjiang road, 204 national highway, chongqing north road, shenyang liuting interchange in highway viaduct, etc.
Red sea island of interchange overpass used in the process of building the largest span sliding formwork casting box girder, minimum radius of curve, worked 15 hours pouring, pouring concrete of 520.54 cubic meters. Pouring across the lines 60 meters sliding formwork box girder in B ramp, with small radius of 350 meters, 60 meters of long-span curved sliding formwork construction design technology in China.
Install the strongest coefficient of anti-collision guardrail
Qingdao bay bridge and approach of the overall scale and connecting cables for the domestic first. Because the sea wind is stronger, bridge safety fence is 1.45 meters high, collision coefficient is up to the national highest level. Construction personnel said: "the bay bridge guardrail barrier will be the strongest." Bay bridge to traffic safety performance is the key of the design of bridge, the bridge guardrail set up a special team for planning and design considering there will be many large container car traffic, Qingdao bay bridge guardrail height is higher than general bridge, at the same time base and internal steel frame Are required to strengthen the design, can say 50 tons of truck hit the fence, guardrail will not broken off, before installation is collision experiment was carried out within the relevant scientific research institutions.
In addition, the guardrail on the appearance design, also the function of preventing vertigo. Bridge guardrail light resistant design, also in the middle of the night driving, two-way traffic even if the bright lights are also won't interfere with each other.
Qingdao to huangdao save 20 minutes
The reporter understands, Qingdao bay bridge will open to traffic in June 2011, will open the Qingdao bay bridge along with all the observation deck, for tourists stop to take pictures. Viewing platform located between Qingdao and huangdao red island, can accommodate hundreds of thousands of tourists visited.
Will be after the completion of the bridge of Qingdao bay bay "ring protection, hold development" strategy of the important transport hub, nearly 30 km from Qingdao to huangdao will shorten the distance, to save time for 20 minutes, greatly alleviate the traffic pressure of Qingdao jiaozhou bay highway, further improve Qingdao cross-sea traffic contact, expanding of Qingdao city skeleton, narrowing of space and time distance between Qingdao, red island, huangdao, strengthen the contact vice city downtown area with two wings, shape the embrace of jiaozhou bay of Qingdao city framework, for the deep development of Qingdao city expand a new space.
S for background information
"The world's first bridge" (41.58 km)
Shandong expressway group invest in the construction of Qingdao bay bridge is a single state-owned enterprise in our country at present the largest investment in the construction of transport infrastructure project, is the freezing waters of the north China's first super-large bridge cluster project, plus approach span and cables, the overall size of bridge is one of the largest in the world. Engineering more than 41.58 km, 28.880 km in the first stage construction, the second phase is 12.7 kilometers. This bridge is a two-way six-lane highway and urban expressway eight-lane, design speed of 80 km/h, bridge width of 35 m, design reference period of 100 years.
Qingdao bay bridge project, is by the Qingdao franchise mode of government, facing the world of public bidding. Shandong expressway group with good reputation, strong capital and technical strength and rich experience in construction management at the bidding, become the project entity, for Qingdao bay bridge franchise in 25 years. The franchising period, Qingdao bay bridge and the jiaozhou bay expressway has been built to bind operation. The engineering budgetary estimate of 9.53 billion yuan.
Bridge began planning study from April 1993, has experienced early planning, can, can, set, shop drawing design and tendering stage, to start over 13 years and eight months, including both academicians, changjiang scholars, hundreds of Chinese and foreign experts and scholars pay the wisdom and sweat for the bridge.
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