Create a number of firsts!The three major urban construction projects in Ningbo are officially opened to traffic today

City Expressway is the skeleton and arteries of a city, carrying the operation and development of the city.

The reporter learned from the Ningbo Housing and Construction Bureau that the three major urban construction projects in our city-West Extension Project of Huancheng South Road, Xihong Bridge and Wiring Engineering (Huanzhen North Road-Beihuan Express Road) Qianhu section) The first phase of the Express Road is officially opened to traffic today.

The construction of urban expressway networks helps promote urban development and improve people's livelihood. The construction of urban fast transportation systems with internal and external intercourse is the basic support and important driver of the city's overall development spatial pattern of modern coastal metropolis. The completion of the three major urban construction projects has made our city closer to the construction goal of the modernization metropolitan city and the common prosperity of the common prosperity.

So, what are the characteristics of the construction of these three urban construction projects? What significance will it bring to the construction and development of our city? The reporter interviewed the engineering builder and the relevant person in charge of the Municipal Housing and Urban Construction Bureau.

West extension of the southern road of the city. Municipal Housing and Urban Construction Bureau Pictures

Video shooting producer Yang Hui

8.9 kilometers of traffic arteries throughout the line through the entire line

Engineering business card

West Extension Project of West Extension of Huancheng South Road

On June 29, with the official opening of the northern part of the Qiu Shi Road-Huanzhen North Road in the West Extension Project of Huancheng South Road.

The west extension project of Huancheng South Road is an important "one horizontal" in the overall layout structure of the "Four Heng, Five Vertical Nine Union" expressway network in the central urban area of ​​Ningbo City. The road, the west to the Yongjin high-speed connection line, and the Guangyuan Avenue Express Road is connected to the north, that is, the two important "vertical" express roads, the two important "vertical" express roads connecting the airport road and the Yongjin high-speed connection line-Guangyuan Road.

The project is about 8.9 kilometers in length, and the standard width of the road is 50 meters.

The main line express road is the construction plan of "elevated+short tunnel". From the airport road to Xiufeng Road, the elevated form is about 8240 meters long (including some ground main road roads). Line 1 of Rail is constrained in a short -term authentic form. The authentic buried section is about 660 meters long. The auxiliary roads are all ground roads.

The project has two interchange hubs across the board, including the over -construction airport crossing and new Qiu Shi Road interchange.

Engineering characteristics 1

Conquest with the problem of relocation of houses and pipeline migration

"During the construction of the west extension project of the South Road of the city, many challenges such as house levy and pipeline relocation and other challenges are also the most difficult infrastructure construction projects faced by the city for many years." The person in charge of the department, Jin Xuanxuan, told reporters.

In terms of house demolition, the project involves Xuejia Village, Gulin Town, Haishu District, and the state -owned non -residential and collective land farmers including Hongxin Village, Xinzhuang Village, Pujia Village, and Xinlian Village in Gaqiao Town The house demolition is about 119,000 square meters.

The participating units in accordance with the construction ideas of "disassembling one section, entering the market, and grab the construction", and go all out to promote the construction of engineering projects:

On March 30, 2017, the construction of the first phase of the project (Airport Road-Xuejianan Road) first started construction, and was opened to traffic on September 30, 2019. In June 2018, the second phase of the project was constructed. On the 9th, the Xuejia Road to Lianfeng Road was opened to traffic. On July 23, the preliminary acceptance of the Qiu Shi North Road to the Blue Sky Road was passed. On June 13, 2022, the preliminary acceptance was passed to the North Road section of the North Road to Huanzhen.

In terms of pipeline relocation and reform, the pipelines of the project are complicated, and the work of relocation and reform and reform is very difficult. Since the construction of construction, the various pipeline units have sent more than 1,000 construction operators to comprehensively ensure the relocation of the pipelines, and completed the 220 kV relocation reform of Ning Pan and Ningcheng, 110 kV relocation reform, 7 The circuit 10 kV relocation, and the change of nearly 1,000 core kilometers on the communication cable, the new and relocating reform of gas pipelines and tap water nearly 20 kilometers, laying a solid foundation for the comprehensive implementation of the project.

Engineering feature 2

Technical research to promote speed -up and efficiency

The west extension project of the south road of the city has a wide range of soft soils along the line and a thicker soil layer, which brings a lot of challenges to the construction technology. Each participating unit adopts a variety of new processes and technologies to promote engineering construction. In order to effectively solve the problem of easy settlement in the construction support in soft soil areas, the participating units have developed a temporary support system construction process for hidden cover beam steel structures, which has been fully promoted in the field of Ningbo municipal engineering construction;

Participating units also use the cantilever truss -type cover beam brackets to occupy a small area and convenient disassembly to solve the problems of the symptoms and tight construction periods of the soft land base for the basics of the Manchurian bracket;

In addition, the construction platform designed by the participating units has appeared on the stage of the National Quality Association as an innovative result and won the first prize in one fell swoop.

"The authentic section of the west extension of the southern road of the city intersects with the Xitang River, and wears a basket arch bridge on the No. 1 rail line 1. Safety and construction measures are extremely strict. "Jin Zianxuan said," Participating units adopt a prestressed automatic compensation system for important node steel support to ensure that the maximum deformed data of the fence on the wall after the implementation of the basic pit in the entire line meet the design control standards. "

Since the construction of the project, it has obtained 2 national invention patents, 8 practical new patents, 9 national and provincial excellent quality management groups, and provincial and municipal BIM technology applications have won 5 times.

Xihong Bridge

Video shooting production: Reporter Yang Hui

A new cross -river channel is added on Yaojiang

Engineering business card

Xihong Bridge and Wiring Engineering (Huanzhen North Road-Beihuan Express Road)

Xihong Bridge and Wiring Engineering (Huanzhen North Road-Beihuan Expressway) are located on Jiangbei District and Haishu District of Ningbo City, from Huan Town, Huanzhen Town, Gaqiao Town in the south. With the opening of the Xihong Bridge and the wiring project, a wide -ranging channel has been added on the wide Yuyao River.

On May 28, 2019, the construction of the Xihong Bridge and the wiring project was fully started, and the construction form of the "main line elevated ground auxiliary road" was adopted. The main bridge is the double -layer steel truffle beam cable bridge, with a total length of 336 meters and an span of 82 meters+138 meters+116 meters. The steel truss beam adopts a N -shaped truss, and the beam is 9.5 meters high (the lower bridge is 6.5 meters to 6.8 meters, which meets the truck through the truck).

The shape of the main tower is arc -shaped door, inspired by elements such as "Yaojiang", "Liang Zhu", "Butterfly". The bridge tower full of power is equipped with a soft curve of the butterfly wings. It has a modern atmosphere.

Engineering characteristics 1

Ningbo's first seat! Upper and lower dual -layer traffic motor vehicles

The main bridge of the Xihong Bridge is the first upper and lower double -layer motor vehicle bridge in the cross -river bridge of Ningbo City. The upper floor is the urban expressway, two -way 8 lanes, and the design vehicle is 80 kilometers/h. Two -way 6 -lane+human non -channel, designing speed of 60 kilometers/h, can pass the truck.

"The design of the double -layer opening traffic will distinguish the fast -road transit traffic and the demand for cross -river traffic, which means that in the future, the truck can only pass through the main roads on the lower layer. The traffic superposition causes congestion. "Said Lin Yinxin, the person in charge of the Xihong Bridge project.

It is worth noting that the expressway of the lower cities will not be available for the time being, and the next stage will be completed and opened to traffic with the ground roads.

Engineering feature 2

For the first time in Ningbo! Municipal engineering large -scale use of bridge prefabricated assembly construction

The bridge component prefabricated assembly construction technology adopted by the Xihong Bridge and Wiring Engineering in the Hailishu Duan Road Interchange area is the first large -scale use of this construction process in the construction of Ningbo municipal engineering construction.

The upper and upper parts of the entire Tongtu interchange are constructed by the prefabricated assembly process. Among them, the prefabricated assembly construction of the main line large span concrete cover beam is also used for the first time in the Ningbo municipal industry.

Through the application of the prefabricated assembly process, on the one hand, it can reflect the advantages of the factory centralized production and processing, which is more conducive to the control of construction quality, and reduce the impact of traffic on the road; on the other hand Continuous operations to reduce the impact of the people's disturbances on the surrounding residents. Engineering feature 3

The first case in Ningbo! The main tower of the bridge "Lie Fighting Vertical Rotation" process

The impact of the policies such as levy and demolition and land transfer, the construction node of the main bridge of the Xirong Bridge was lagging behind in the early stage.

In order to make up for the loss of construction period, the participating parties actively explored, and finally determined that the main tower "first beam and then tower, the vertical and vertical" process with higher safety risks and higher construction work effectiveness instead Section installation ".

"On the one hand, this process can avoid a large number of high -altitude operation risks and reduce cross -construction; on the one hand, it can better control the installation of the main tower and ensure the quality of the assembly welding; Essence

"Standinating vertical", as the name suggests, is to lay the main tower of the bridge on the river surface for welding assembly.

This process set a number of firsts in the history of bridge construction in Ningbo and even Zhejiang Province. It is the first high tower cable bridge with vertical transfer process in Ningbo. The high -tower cable -stayed bridge with the heaviest weight (1150 tons) in a single rotor.

Puzhou Avenue-Fuqing Road (Dongqian Lake Section) Express Road. Municipal Housing and Urban Construction Bureau Pictures

Video shooting production: Reporter Yang Hui

Set up the fast passage of the eastern New Town and Dongqian Lake and the central area of ​​Puzhou

Engineering business card

Puzhou Avenue-Fuqing Road (Dongqian Lake Section) Express Road first phase project

From today, the main line of the first phase of the first phase of the Expressway of Dongqian Lake and the Central District of Dongqian Lake and Luzhou, the main line of the first phase of the Express Road, Fuqing Road (Dongqian Lake Section), is officially completed and opened to traffic.

Puzhou Avenue-Fuqing Road (Dongqian Lake Section) Expressway 1st phase project starts from Han Song Road in the west, along Luzhou Avenue, Fuqing Road to Huancheng South Road, with a total length of 8.39 kilometers.

The project is divided into two parts: express road main line and supporting ground road improvement.

Among them, the main line of the Express Road, from Hansong Road in the west, along Fuqing Road to integrity, the total length is about 6.14 kilometers. The cross section width is 25.5 meters, with two -way 6 lanes, 80 km/h, and 7 new parallel ramps on the entire line; ground auxiliary track, construction according to the standard of urban main roads, the standard section of the segment is 50 meters wide, set up a two -way 6 lane, the design vehicle speed 50 50 Kilometers/h.

Supporting ground roads, the rectification part of the south is from the road of integrity, to the south of the city, the total length is about 2.25 kilometers, the standard width of the road is 52 meters, there are two -way 8 lanes, and the design of the vehicle speed is 50 km/h.

It should be noted that the main line of the Hanyong Road is the main line of Hanyong Road, and 5 pairs of ramps such as Hansong Road, Lake Xia Road, and Integrity Road. Strive to be completed and opened to traffic as soon as possible.

Engineering characteristics 1

The fastest! It takes less than two years to complete the opening of traffic

Puzhou Avenue-Fuqing Road (Dongqian Lake Section) Express Road first phase project officially started construction from June 30, 2020 to the main line to open to traffic. fast speed.

The construction unit fully promotes the project construction at full speed in accordance with the requirements of "starting instant sprints". Over the past two years, the majority of the builders have "stop working in the Spring Festival" and have not rest on holidays. They have invested nearly 2,000 construction operators and invested more than 100 large -scale machinery (sets) in various types.

The project has 500kV, 220kV, 110kV high -voltage line across the board. There are water supervisors, DN1600 raw water pipes, rail transit 35kV power pipes, gas pipelines, and about 60%of the entire line of viaduct construction. Complex and difficulty in construction.

All pipeline units are coordinated and jointly supported the relocation work of various pipelines. In the past two years, the pipeline units have completed the total power of the power of the power of power over 10 kilometers (of which 110kV power relocated), the temporary relocation of the communication line is about 12 kilometers, gas gas is gas, gas gas is gas, gas gas is gas, gas gas is gas, gas gas, gas gas, gas gas, gas gas, gas gas, gas gas, gas gas gas, gas gas, gas gas, gas gas, gas gas, gas gas The pipeline relocation is about 6 kilometers, and the relocation of the water (including the original water) pipeline is about 3 kilometers. The task of relocation has laid a solid foundation for the project to fully implement, and has also created a new speed of the relocation of major project pipelines. Engineering feature 2

The first "double carbon" practice in the municipal field

The first phase of the Expressway Project of Fuqing Road (Dongqian Lake Section) of Fuqing Road (Dongqian Lake Section) is the first "carbon peak carbon neutralization" practice case in our city. At the Node of the Avenue of Fuqing Road, the "top upgrade+translation" technology is adopted, and the node reduces the carbon emissions by about 6,460 tons.

According to reports, the cross -line bridge of the Yuanxian County Avenue was completed in 2012. The bridge surface of the bridge deck and the longitudinal slope of the bridge deck cannot meet the technical specifications and standards of the fast -road elevated bridge. The layout of cross -line bridge scales is also different.

"According to the usual practice, the old bridge needs to be demolished and reconstructed. After the test, it is found that the old bridge is in good operation and the direct demolition and reconstruction does not meet the basic requirements of the development cycle. Finally, the "top -up translation" plan can not only retain the old bridge, but also minimize the impact on traffic. "Shi Bin, the person in charge of the project.

The use of this technology has renovated the renovation of the old bridge in place. "Compared with the demolition of a new plan, the current approach not only saves more than 10 million yuan in construction costs, but also shorten the construction cycle of the main bridge to about 6 months, and the old bridge Re -use also avoided the generation of nearly 10,000 tons of construction waste. "Shi Bin said.

In addition, compared with the demolition of the newly -built plan, the "top upgrade" transformation plan reduces the consumption of steel by 1642.1 tons, the concrete is 1804.86 cubic meters, the amount of solid waste is 4846 cubic meters, and the carbon emissions are about 6460 tons, which is equivalent to 3521 trees.

"Lazhou Avenue-Fuqing Road (Dongqian Lake Section) The successful practice of the cross-line bridge on the first phase of the Expressway project of the Express Road in the first phase of the Express Road, provides new ones to achieve the existing structure reuse in Ningbo's subsequent infrastructure construction. The direction of guidance has important guiding significance for the future construction industry in Ningbo's construction industry to move towards 'carbon -peak carbon neutralization'. "The relevant person in charge of the Urban Construction Development Center of the Municipal Housing and Urban Construction Bureau said.

West extension of the southern road of the city. Reporter Yang Hui

Central City Expressway Network

Expansion and improvement of quality and benefit people's livelihood

What is the significance of the construction of the three major projects for the construction of the city's expressway network system and the future development of the city?

The relevant person in charge of the Ningbo Housing and Urban Construction Bureau said that express roads are the great arteries for the rapid development of the city. The completion of the three major projects is of profound significance for the development of Ningbo City.

The West Extension Project of Huancheng South Road is completed and opened to traffic, and it is connected to the West Hong Bridge and Wiring Engineering of the Synchronous Train to form an important fast traffic corridor in the western area of ​​the central city area. At the same time "Expansion", the urban development space pattern is expanded.

With the completion of the west extension of the south road of the city, the development pattern of Chengxi area will be further expanded and promoted: 15 minutes of Express Road in the West area of ​​Haishhashun can reach an increase of about 150 square kilometers to bid farewell to the era of no expressway in the area; the status quo is the status quo; Lianfeng Road and Huishi Road have always been the main section of traffic congestion in the west of the airport road. With the completion of the west extension of the Huancheng South Road, it will further improve the internal traffic quality of Takahashi, Gulin, and Jishuang.

"With the completion of the west extension of the south of the city -Xihong Bridge and the wiring project, Yaojiang has added a fast cross -river channel on both sides of Yaojiang." The person in charge said, "For a long time, the lack of the construction of the cross -river bridge in the west of the city. As of now, The only river -crossing channel Qinglin Bay Bridge in the west of Ningbo City is overwhelmed at the peak of the commuting period, and the inconvenience of traffic also limits the coordinated development of the two sides of the Yaojiang River. The architecture of the urban expressway network will effectively divert the pressure of crossing the river crossing the Qinglin Bay Bridge, which will have positive significance for driving the development of the west of Haishu City, promoting the construction of Yaojiang New City, and connecting the development of Qianwan New District. "

Puzhou Avenue-Fuqing Road (Dongqian Lake Section) Expressway Project is an important part of the city's "four horizontal, five vertical and nine couplets" city expressway network system. Expressway. In the future, the project will also connect with the Dazhou Avenue (Airport Road-鄞 鄞 鄞) Expressway, which is being seized to form a fast passage that is directly connected with Ningbo West Hub, to promote regional coordination, support urban space expansion and urban economy Development is of great significance.

Common wealthy, transportation first. At present, the city has been completed for 142 kilometers. With the beading chain and the establishment of the "Expressway" that moves towards the common prosperity, it will further improve the urban road network system, optimize the citizens' travel environment, and enhance the public's sense of travel.

Reporter Zhou Kina Correspondent Sun Jia Wang Yan Qian Qian Yu Wenjin

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