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Rotary drilling rig construction case | 228 National Highway Wenling City East to Wenqiao Section Project

  • 2024.12.31

Construction time

October 2024

Construction site

Wenling, Zhejiang

The type of project

highway

Device type

Piling machinery

Project Overview:The starting point of the project is located near Dongjiaowan, Wenling Chengdong Street, and is connected with the 81 Provincial Highway through directional ramp interchange, and the end point is near Lingjiao Village, Wenqiao Town, Wenling City, and is connected with the Wenling Zeguo to Yuhuan Damaiyu Shugang Highway Project. The total length of the main line of the project is about 15.96km, and there are 3782.15 meters/9 bridges (including the main line bridges and separated interchanges in the interchange area), including 1943.65 meters/1 extra-large bridge, 1758 meters/6 bridges, 78.5 meters/2 middle bridges, 5568.5 meters/4 tunnels (equivalent to double tunnels), including 4187 meters/2 long tunnels, 1381.5 meters/2 middle tunnels, 4 interchanges, and 1 highway maintenance and management room (combined with the function of service stations).


Technical Standards:The project adopts the standard design of a first-class highway, with a design speed of 80km/h, a two-way six-lane section from the starting point to the West Ring Road (about 7.3 kilometers long), and a roadbed width of 32 meters (of which about 1.2 kilometers of K3+764~K4+980 South Ring Road adopts the form of "elevated + ground road", the viaduct is 27 meters wide, and the ground road is 47 meters wide (excluding the width of the access ramp); The section from the West Ring Road to the end point (about 8.7 kilometers long) adopts a two-way four-lane section with a roadbed width of 24.5 meters. The design load standard of the bridge is highway-class I, and the rest of the technical standards should meet the requirements of the "Technical Standards for Highway Engineering" (JTG B01-2014) issued by the Ministry of Transport.


Project Significance:After the completion of the 228 project, 228 National Highway (the original 81 Provincial Highway Section) can be connected with Luzetai Expressway, South Ring Road, West Ring Road, and 228 National Highway (Damaiyu Shugang Highway Section), and Dasong First-class Highway constitutes the outer ring road network of the entire Wenling urban area. At the same time, the distance between the Wenqiao Town block and the main urban area of Wenling will be shortened from the original 20-30 minutes to about 10 minutes, which can give full play to the radiation and driving role of the main urban area. In addition, the east of the city to Wenqiao section is currently the only broken road of 228 National Highway in Taizhou, and the construction of 228 National Highway from the east of the city to Wenqiao section of the project is of great significance for promoting the construction of a strong transportation city in our city and even a strong transportation province in Zhejiang.