Become the second in the country F1 Formula racing track。The track of the project has officially reached the opening conditions.，It passed the acceptance of the FIA on November 13.。

The track is designed to push the limits.，To allow the driver to fully realise his potential and that of the car。The exquisite design of many corners increases the challenge of the track.，The longitudinal slope of the track is set according to the speed，Therefore, for the gradient of starting straight driving,，There are strict standard requirements for the slope of bends.。At the same time，Pavement flatness and resistance must strictly meet the requirements.，To ensure the grip of the tires.，Make sure the track is safe at high speeds.。

Let's take a look at the racetrack.“Fast and furious”Behind the scenes，Wirtgen Group Pavement Equipment works side by side with road builders，Overcome tough quality challenges，The story of building a professional international track！

Construction Information and Challenges

Chengdu Tianfu International Racing Track Project is located in Huahong Village, Shipan Town, Jianzhou New Town, Jianyang City, Chengdu City.，The straight-line distance from the center of Chengdu is about 39.5 km。The total length of the racing track is 3.26 km，Width 14 m-16 m，There are 19 curves in total，The design speed range is 60-280 km/Hour。Track alignment、The flatness is designed according to the requirements of FIA standards.，Linearity approved by FIA，Some indicators have exceeded the current standards.，Extremely high construction standards。

Tianfu International Track Project is currently declared. FIA Secondary track，But the design standards and construction standards are in accordance with FIA Do it according to the requirements of the first-class track.，For example, the smoothness of pavement is different from that of ordinary highway pavement.，Because the smoothness of the track surface will directly affect the safety of the car.，So the track、Asphalt pavement in the maintenance area、Smoothness Technical Index of Asphalt Pavement in Buffer Zone（4 m Maximum clearance of straightedge）It's very demanding，Each floor has different requirements.。The flatness of the upper layer shall be controlled within 2 mm Within。

The structural layer of the track is divided into six layers from top to bottom, which are the upper layer of asphalt pavement.、Middle layer、Lower layer、Grassroots、Subbase、Cushion，Among，The surface layer directly bears the wheel and natural load，And that abrasion resistance is realize、Waterproof and other functions，The base course is mainly load-bearing，Subbase is the secondary load bearing layer，Cushion drainage、Waterproof、Antifreeze、Antifouling and the like。

Due to the special nature of the track，Before paving begins，The construction party has carried out paving simulation.，Change the conventional rolling mode according to the driving track and direction of the racing car to ensure the flatness of longitudinal and transverse rolling.。

The overall quality requirements of asphalt pavement are particularly high.，Asphalt pavement construction must be carried out continuously to ensure the quality.（Compactness、Thickness、Flatness, etc），Pecially the flatness requirement，No transverse seams are allowed。

Therefore, the performance and stability of the construction equipment，It puts forward extremely high requirements.。After investigation and repeated demonstration,，Sichuan Gaolu yuanchang Group, the professional contractor of asphalt paving（Hereinafter referred to as“Gao Lu yuan Chang“）Finally adopted in the global number of. FThe equipment combination of Vogler paver and Hummer roller has been successfully used in track construction.。

 

Quality barrier of high quality equipment

The construction part of Sichuan Gaolu yuanchang Group is the event square and the track project.，The total area of the competition square is more than 30,000. m²，A prime coat is used+Slurry seal+7 cm Lower layer AC-25+Sticky oil+4 cm Upper layer AC-13 Design。The asphalt pavement is paved by three Vogler pavers.、Realization of four-machine joint laying。

Total length of track events 3.26 km，Track width is 14-16 m，There are 19 curves.（Right bend 7、Left Bend 12），The maximum turning radius is 500 m，Minimum 14 m，Maximum linear length 589 m。

The laying of all structural layers of the whole track is also completed by the combination of Vogler paver and Hummer roller.。The main model of paver adopts Vogler high-grade road large paver Super 2100.-3 L 。This model is tried and tested，The performance is stable and outstanding。Fogler -The 3-series high-class road models are equipped with Fogler ErgoPlus 3 Human-computer interaction intelligent system and Niveltronic Plus Automatic control system for vertical and horizontal slopes，The paving flatness can be accurately controlled.、Paving speed、Degree of precompaction of bituminous materials。This large paver is compatible with the Vogler Universal Paver Super 1880 L Cooperate，Multi-machine joint laying covers the full width of the track。

During paving，Vogler's pavers of different classes have maintained a consistent level of high quality.，Universal paver and large paver are well matched.，The paving effect is the same.，And realize that continuous paving on one pave width.、Seamless，High flatness surface layer。Fluent、Uninterrupted feeding，Ensure that the special modified asphalt material of the surface course can be precisely controlled to be paved and formed within the design temperature range.。

Right behind the Vogler paver.，Hummer double drum vibratory roller、Oscillating roller、Small Road Rollers Come Together，Multiple Hummer road rollers are required to be 100 from initial rolling to re-rolling and then to final rolling m Complete the whole rolling process within the distance。The whole construction process is characterized by flatness and smoothness,、Linear control is the primary index.，Precise control of paving temperature、Paving speed、Rolling speed、Rolling times and other construction details。

After the completion of asphalt paving and rolling on the upper layer of the track, the road has achieved a strict standard of flatness.，Up to 4 m Straightedge monitoring flatness at 2 mm Within the value、The surface joint shall not exceed the rigid index requirements of 2.。

 

Said Shen Bin, chairman and general manager of Sichuan Gaolu yuanchang Group Co., Ltd.：“The width of the track for the road.、Flatness，Cross slope、The standard requirements for longitudinal slope are very strict.。The requirement of compactness is a new project in Sichuan Province, which is higher than the requirement of expressway.。We have selected a full range of Wirtgen Group pavement equipment.，It is believed that the combination of Fogler paver and Hummer roller can meet the strict quality requirements of the project.。”

In addition to high-performance equipment guarantee in hardware,，Pave such a difficult track.，The key to success lies in the professionalism and execution ability of the construction team.。General Manager Shen stressed：

“

Before project implementation，We organize engineers and technicians to visit other places to learn the experience of track construction.，Technical communication with WIRTGEN's application engineers in China for many times to develop high level construction plan，Then the scheme is optimized through the test section.，Pre-job training and technical disclosure shall be conducted for all engineering and technical personnel and construction personnel。

At the construction site，The application support team of Wittgen China and the local agent Qisheng Mechatronics also provided us with professional guidance.。Final，Our construction quality has been approved by Party A.、Owner、Design、The unanimous affirmation of supervision and other units，We are very proud。”

At present，Tianfu International Circuit has successfully passed the acceptance of FIA.。After a series of rigorous reviews and evaluations,，The FIA's grounds inspector deemed the track to be in compliance with FIA standards.，It has the conditions to hold all kinds of high-level racing competitions.。This track not only provides a challenging driving environment for racing drivers.，At the same time, it ensures the safety of drivers.。The FIA's Venue Inspector Tim Schenken He commented in an interview.：“This track is very good.，It's obviously built by a very professional team.。“

Future，The project will also promote the joint construction of Sichuan and Chongqing.“National Sports Industry Development, Innovation and Reform Highland”“High-level model of regional sports industry cooperation”“World-class outdoor sports destination”The strategic goal of。