2020年1月1日0时， 注定将写入新洪塘大桥建设的历史！ Taiwan Straits Network, December 31st. The comprehensive Southeast Network, Strait Metropolis Daily, and Straits Network reported at 00:00 on January 1, 2020, destined to be written into the history of the construction of the new Hongtang Bridge!
The reporter learned yesterday from the Fuzhou Jiaotong Construction Group that one third of the bridge downstream of the New Hongtang Bridge was opened to traffic on New Year's Day. Existing vehicles and pedestrians crossing the river will be changed from the old bridge to the new bridge. The 28-year-old Lao Hongtang Bridge will be demolished after completing its historical mission.
The new Hongtang Bridge is part of the widening and reconstruction project of the Hongshan Bridge to the Hongtang Bridge (ie, the "Two Hongqiao Bridges" project). Construction plan, this is the first case in China. The "Two Hongqiao" project is planned to be completed and opened to traffic in 2021. By that time, there will be no traffic lights on the entire line from the north gate of Laofu Road on Yangqiao Road to Shangjie Street.
Three months ahead of schedule, the new bridge will "take over" the old bridge
Yesterday, the reporter came to the construction site of the Hongtang Bridge and saw a new bridge on the left and right sides of the old Hongtang Bridge, that is, the upper and lower reaches of the Wulong River, and three bridges across the Wulong River. On-site workers are making final preparations for marking lines and setting up guardrails.
"The upper and lower bridges belong to the newly-built Hongtang Bridge, one third each. At 0am on January 1, traffic on the old bridge will be switched to the new bridge on the downstream side, three months ahead of schedule." According to the relevant person in charge of Jianjian Group, the new bridge on the upstream side will be used as a construction site and a road to demolish the old bridge and will not be opened for the time being.
The new bridge opened this time has a two-way, two-lane (2 × 4.5 meters) speed limit of 30 km / h. According to the design requirements, the new bridge still maintains the original non-mixed and high-limit load-limit traffic mode.
Provincial and municipal leaders attach great importance to the construction of the "Two Floods Bridge" project. During the "May 1st" this year, provincial and municipal leaders went deep into the construction site of the New Hongtang Bridge and visited frontline builders. The Shanghai Jiaotong Construction Group and all participating units took this as an opportunity to set off a labor competition. More than 300 builders worked overtime, worked day and night, and completed the phased goal three months in advance.
Construction and opening to traffic, bridge deck “chain hoist” first in China
The Hongtang Bridge is divided into three sections, which are constructed and opened to traffic
The "Two Hongqiao" project starts at the intersection of Hongshan Bridge, Yangqiao West Road, and Honggan Road in Gulou District, passes Hongshan Bridge, Miaofeng Mountain Tunnel, and Hongtang Bridge, and ends at the Hongtang Bridge West Bridge Head and Guobin Avenue. It is connected with eight lanes in both directions, the design speed is 60 km / h, the road width is 47.5 meters, and the total length of the route is 4.1938 kilometers.
According to the original design, the Hongshan Bridge, Miaofengshan Tunnel and Hongtang Bridge need to be demolished before the old bridge tunnel and then the new bridge tunnel. During the construction, the traffic on the Minjiang River, Wulong River and Miaofeng Road shall be interrupted. The Yuanzhou Bridge and Huai'an Bridge detoured, making it difficult for citizens to travel. To this end, the Municipal Party Committee and the Municipal Government require that “the Lianghong Bridge Project must be constructed and opened to traffic while preventing traffic jams”.
In accordance with the requirements of the Municipal Party Committee and the Municipal Government, the Shanghai Jiaotong Construction Group led the design unit and the construction unit, and organized expert studies and demonstrations for several times. Finally, the “Baotong” construction plan for construction and opening to traffic was finalized. The "Tongtong" construction scheme is the most novel. The bridge is divided into three parts: upper, middle and lower reaches. In 2017, one third of the upper and lower reaches will be constructed simultaneously. After the downstream bridge is opened, the old bridge will be demolished and the middle One-third bridge construction and other work, and finally the three bridges are connected in series with prestressed steel strands to form a whole. According to the person in charge, it is "much like 'chain hoist', three new bridges' String up 'to form the new Hongtang Bridge. "
"Serving" for 28 years, the old Hongtang Bridge will end
On January 17, 1991, the Laohongtang Bridge was completed and opened to traffic, and then the President of the Fuzhou Municipal Party Committee, Xi Jinping, came to cut the ribbon. Since then, the westward channel connecting Fuzhou to Minhou, Minqing, Yongtai and even Sanming and Nanping was opened, ending the history of cross-strait ferry traffic, and connecting the national highway 316 and 324 within Minhou, which has cross-epoch significance .
Laohongtang Bridge has a total length of 1.8436 kilometers, and its main hole is 60 + 120 + 60 meters of under-stressed concrete cable-stayed truss T structure. It combines the advantages of cable-stayed, truss, and T-type rigid-frame bridges. Light weight, large spanning ability, beautiful appearance, advanced technology, etc .; 31 side holes are 40-meter prestressed concrete continuous beams, and the hole-by-hole segment unbonded assembly is the new technology first adopted in the history of Chinese bridges at that time.
Before the Tangyuanzhou Bridge and Pushang Bridge, Hongtang Bridge had always undertaken the heavy task of connecting the two sides of Fuzhou's west to the Wulong River. Until now, the old Hongtang Bridge is still the Shangjie Town of Minhou County and the university town of Fuzhou. Traffic arteries in urban areas.
"After that, the old Hongtang Bridge will be demolished and completed, and the new Hongtang Bridge will continue to transform and sublimate in the space conceded by the old bridge, to accumulate strength for the construction of the most beautiful Fuzhou." The official told reporters that the new Hongtang Bridge is expected to It will be fully opened in 2021, and its two-way eight-lane traffic space will greatly ease the traffic congestion in the university town from Fuzhou.