How to create a new benchmark for quality pavement?Do this at high speed!

From June 29th to 30th, the Observation Meeting of Ping An's Centennial Quality Engineering and asphalt pavement construction quality was successfully held at the Zhejiang Provincial Transportation Group, which aims to accelerate the improvement of the quality of asphalt pavement engineering in the province. More than 100 leaders and experts in the province's transportation engineering management centers (law enforcement teams, stations), some high -speed and national provincial highway construction units. On the afternoon of the 29th, at the construction site of the three -standard asphalt pavement of the three -standard asphalt of the high -speed highway, the pavement pavement will be paved evenly with the asphalt mixture of the hot air. , Finally, a flat and dense asphalt pavement gradually formed. At the pavement intelligent control center not far from the pavement construction site, the staff is observing the construction status of the site through video surveillance. Starting from the raw materials, asphalt mixture mixes, transport, and pave the scene. The entire process of asphalt pavement construction is clearly visible on the large screen, and it is in control.

The people satisfaction as the standard

Create a new benchmark for quality pavement

The Lingjian Expressway is an inter -provincial interpretation path in Zhejiang and Anhui, which is of great significance for promoting the integrated development of the Yangtze River Delta region and the province's common wealth demonstration construction. The total length of the project is 85.5 kilometers. After Lin'an, Tonglu, and Jiande, the high -quality construction of the project closed the beautiful life of residents of the two provinces. The quality of the road surface is crucial.

As a "dual demonstration" project of the Ministry of Transport's Highway Engineering and Ping An Centennial Quality Project, the Lingjian Expressway Company is based on the positioning of the "National Highway Construction First Brand" to create the quality of the province's highway pavement quality The overall goal of the model has proposed the concept of integrated road management and control, establishes a set of road management control system, and established a professional road management team to explore a group of copied and promoted road management experience. Since the construction of the pavement, the Ling Construction Expressway has promoted the implementation of the "pavement quality project" with integration and standardized management, and established a "road quality engineering" management system with system guarantee, subject performance, and element controlled trinity. Through the design of refined and quality -wide prevention, the quality of the pavement is promoted to ensure the durability of the pavement quality. In order to solve the problem of different systems of road engineering construction management and control standards, the Lingjian Command is guided by the province's asphalt pavement construction related documents, and according to the actual promotion of the project, combined with personnel, equipment, materials, testing and other pavement control elements, detailed details, detailed The "Implementation Rules for the Informationization of Path Construction" and the "Administrative Measures for the Management of Water Stability Grassroots Cracks and Bridge Tunnel Cracks" are formulated. The project synchronizes supporting organizations to carry out pavement technology examinations, road training, pavement quality analysis meetings, and rework warning meetings, etc., and will be announced to the front line of the road tube control as soon as possible.

The implementation of road integration control is inseparable from the operation of professional teams. To this end, the headquarters selected the professional team of the "One Road and Five" pavement engineering teams, designing, construction, construction, supervision, and third -party units to achieve comprehensive management from planning, design to supervision, implementation, and consulting and testing. With the help of party building leadership, the Lingjian Expressway has established the Pioneer of the Path Party Group to lead the difficult tasks in the construction of the pavement construction, break the problem, and dredge the point to ensure that the road surface is progressing. Up to now, 84%of the water stabilization construction of Linjian high -speed pavement project has been completed, 64%have been completed in the bottom layer, and 25%have been completed in the middle layer.

Requirements for high quality, comfort and durability

Refined management and control to improve the quality of the road surface

The cracks of less than 0.1 mm are hard to see. Once it is generated, under the influence of sun and rain, it will gradually erode the pavement to form potholes, leading to bumps on driving. Public driving comfort. Let the pavement "high -quality comfortable and durable", Ling Construction High Speed, work hard from the three aspects of design, management and construction, and refine the entire process of construction and control.

In order to solve the problem of "bridgehead jumping", Linjian High Speed ​​continuously optimized the design of the bridge deck and filled the quality control from the back to the back of the stage. On the one hand, improve the quality of mixing material, complete the mixing of water stability mixed materials in the factory, and accurately control the cooperation ratio of water stability; on the other hand, improve the standard in the construction process, set the thickness indicator bar in separate steps, layered compactness, compact compacation The thickness of each piece is 15 cm, and after the construction is completed, the sand irrigation method is used to check the thickness and compactness of the sand to reduce the height difference between the back and the bridge deck, avoid the bridgehead jumping, and improve driving comfort. In order to improve the cracks of the bridge and tunnel road surface and improve the integrity and durability of the pavement, Linjian high -speed optimization of water stabilization and control control, and adopt the sealing process of epoxy resin grouting, which is closed to the cracks. Essence The project fully implements the first part of the system, and the benchmark of the road surface test section provides technical guarantee for subsequent road construction; adheres to the concept of water stability over the winter, scientifically arrange construction sequences, set the construction equipment for the construction equipment of highway road base in mountainous areas New "technical promotion and application and other means, systematically improve the quality of roadbed pavement engineering, extend the service life of the pavement, and promote the construction of a century -old quality project.

Let the entire construction process "visible"

Promote the digital reform of the pavement engineering

Taking the province's efforts to deepen digital reform as an opportunity, with the quality construction of Zhejiang Road, Zhejiang Road and Zhejiang Transportation Group's "Digital Traffic Investment" construction, the provincial traffic engineering management center has created the "151" project management system and established a smart pavement surface to build a smart pavement. Manage module. With the combination of the "one -point member" of the electronic fence and the "Zhejiang Road Quality" electronic punch function application of the Provincial Transportation Engineering Management Center, Lingjian High Speed ​​builds a grid management system of "full coverage, blind zone, grid to the end" , Realized the wisdom of personnel management and control; through the use of the Internet of Things technology, the data collection, analysis, evaluation, early warning, and closing of the entire section of road construction have been realized, forming a multi -dimensional road construction quality evaluation system, and realizing asphalt mixture from production from production Intelligent control of the entire process of transportation to paving and crushing ensure that the quality of the road construction can be traced. As the only pavement warranty data without pilot unit of the provincial transportation engineering management center, Lingjian Expressway has collected relevant data from the Internet of Things without sensory collection, and realized the automatic production, automatic index, and automatic evaluation of quality inspection data. Nowadays, the 14 road quality tables are optimized to 12 forms. More than 600 of the more than 800 data that were originally required to be manually entered have achieved automatic reporting and upgrades, the work efficiency has been greatly improved, and the authenticity of the data is guaranteed. It is worth mentioning that Zhejiang Gaojian Company actively responded to the requirements of the industry, and jointly established the Highway (road surface) technology center with Tongji University, the Ministry of Transportation Institute of Science and Zhejiang Communications, and the establishment of Zhejiang Gaojian Company. The data center platform realizes the in -depth integration of resource sharing, "industry -university -research", and jointly promotes the high -quality development of road pavement. As of a few days ago, Lingjian's high -speed investment has completed a total of 17.82 billion yuan, accounting for 86.3%of the approval budget of 20.648 billion yuan, and a total of 82%of the overall image progress has been completed. It is expected that the project will be opened to traffic in the first half of 2023.

Author 丨 Chen Jingwen special reporter Qin Hongguang pictures 丨 Linjian high -speed editor 丨 Zhang Yaling Liao Yi review 丨 Preparation of Wei Tao 丨 Sun Yingli

Submit mailbox: [email protected] Business: 010-65293624

- END -