Linyi, Shandong: Tongda Road Luohe Bridge Project Beilijiao Crouching Hushan Tunnel runs through

The Luohe River under the blue sky and white clouds is drunk.

At 7 o'clock on June 24th, the Luanhe Bridge Project of Tongda Road, Linyi City, Shandong Province, to the North Jiao Huishan Tunnel (Passing down from the intersection of Tongda Road and Luohe Road) to realize it. Wo Hushan Road or Beijing Road can pass directly from the tunnel, which greatly alleviates the traffic pressure on Wohu Shan Road and the surrounding roads.

Tongda Road Luohe Bridge and cross -strait interchange transformation projects were built by the Linyi Municipal Group Seventh Company. The design speed of the two -way eight -lane urban road is 50 km/h. The main bridge across the Laohe River fully combines the terrain of the river, and adopts the "accessible Quartet" cable bridge shape. Interchange with Binhe Road and Luohe Road on both sides. Among them, the Wohu Mountain Tunnel passed through the road from the east to the west to connect the Luohe Road. The Cancer Hill Tunnel is 540 meters in length, two -way six -lane, and the design speed is 50 km/h.

As an important traffic road in the east and west directions of Beicheng New District, Luohe Road realizes the seamless connection between Changchun Road and the Sanhekou Tunnel. The traffic on Luohe Road is large. How to do a good job of traffic dredging during construction, minimize the impact of construction on traffic, ensure that citizens' travel is not affected, and it is also the top priority of construction.

In order to ensure the normal traffic of vehicles during the construction period, east and west, north and south, the project department specifically hired external security companies to coordinate and conduct traffic. Only northward diplomatic relations were equipped with 16 traffic coordinator to conduct traffic around the clock to ensure the safe and orderly roads.

"During the construction process, we adopted the method of section construction to divide the tunnel into five sections. First, the ends of the ends of the ends of the tunnel of the tunnel, the vehicle drove normally from the middle of the tunnel; after the construction of the two ends of the tunnel was completed, the vehicle was guided to the construction of the construction. Areas, finally the middle area of ​​the construction tunnel. "Zhu Wenjie, the technical responsible person of Tongda Road Luoheqiao Engineering Project, introduced," Although segmented construction will delay the construction period, it is worth the minimum reduction of the impact on citizens. We will try to shrink as much as possible The scope of construction, less road space, do a good job of space and time swap, and maximize the road to the people. "

Since entering the venue in October 2021, the seven companies of Linyi Municipal Group have carefully planned in accordance with the principles of high starting points, high standards, and high -quality construction, carefully controlled the whole process, reasonably arrange various processes, scientifically rushed to work, grab the sunny days, war, and fight On rainy days, increase the investment of manpower and material resources. On the premise of ensuring safety and quality, it has solidly promoted various nodes and continuously set off a climax of construction.

The geology of the Crown Tiger Mountain Tunnel is complicated, the water level is high, and the depth of excavation will encounter water when it is excavated. "In the entire construction process, I feel that I have been fighting with water. You need to discharge the water first. Only the speed of pumping water is much higher than the water storage speed can the foundation pit excavation require." Yu Qian, the person in charge of the traffic agency project, recalled.

Due to the limited construction of the Wohu Mountain Tunnel, there is no conditions for excavation of slope and excavation. It can only be constructed with a bite support pile instead of excavation. In other words, 1500 occlusal support piles need to be made outside the side wall of the tunnel to prevent earthwork from collapse and comprehensively ensure the safety of tunnel construction. The pile foundation is aged 20 cm to form a "protective wall", which not only prevent external water seepage, but also play a supporting role to ensure normal internal construction.

"When the piles are protected, there are many cracks and caves, and the situation of collapse and leakage is endless." Yu Qian said that the pile diameter of 800 cm and the average depth of about 15 meters was invested in 8 rotary excavations. Drilling, it was done in less than two months.

On the day of the Cancer Hill Tunnel, at the construction site of the main bridge of the Luohe Bridge Engineering of Tongda Road, the 500 -ton track was slowly sent to the T2 section of the main tower of about 120 tons to the designated location. The main tower of the Luohe Bridge of Tongda Road is 100 meters high. The main tower is composed of two horizontal elliptical steel towers. The overall space is separated by the limb separation spatial curve structure. The four towers are six -sided diameter. The main tower column is a steel structure within 85.7 meters below the vault, and the remaining 16.5 meters are concrete structures.

Due to the irregular shape of the tower columns and the large inclination angle, the steel bars are tied, the overall assembly of the template and the concrete pouring, and the main tower crane is the focus of the main bridge construction of Tongda Road Luohe Bridge Engineering. Before the hanging, the project department has accurately calculated the suspension rope, the length of the lifting, and the angle of the hanging to ensure that the lifting operation is carried out smoothly. In addition, in order to ensure the floods, the pouring box beams and the main bridge steel box beams are constructed by the main bridge. "At present, the lower part of the bridge in the main river channel has been completed, and the upper box beam construction is undergoing. At the same time, the coffin of the coffin and the material are evacuated in an orderly manner. Before the main flood season comes, the river channel is cleaned and ensured the safety of flooding." Sun Zengming, the head of the main bridge project of Tongda Road Luohe Bridge Engineering.

The road is the bones and blood of the city, which proves the clear footprint of the city's development.

Yuantongda Road Luohe Bridge was completed and opened to traffic in 1989. It is an earlier bridge on the Luohe River. It witnessed the rapid development of Lanshan District. The traffic volume is about 30,000 per day. It belongs to normal congestion.

In order to ensure the normal travel of citizens, before the removal of the old bridge, the project department re -built a temporary Bao Tong Bridge at 40 meters downstream of the old bridge, which is equivalent to disassembling one old bridge and two new bridges. At present, Baotong Bridge is playing an important function of traffic conversion and transporting the steady stream of vehicles to both sides of the Luohe River.

After the "Arc de Triomphe" of Wuhan Road, the Wuhan Road Bridge, in the near future, the new landmark will be produced on the Luohe River -a brand new Tongda Road Lahe Bridge. As a key livelihood project in our city, after the completion of the Tongda Road Luohe Bridge project, the bottleneck of the road will be used to ease urban traffic congestion and improve the quality of people's life. It is of great significance for pulling the city's framework and the realization of capacity expansion and improvement.

The more difficult the more difficult, the more difficult the more difficult. "We will continue to carry forward the spirit of the Iron Army, take the burden of bravery, and make every effort to complete the subsequent construction tasks in high -quality, and make a satisfactory answer to the people of the city as soon as possible." Wu Shifeng, manager of the seven companies of Linyi Municipal Group, said.

Lin Yao Mercy Reporter Sun Yuguang Tan Xiao Xiao Tengfei

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