Recently, the construction of the Jinan-Heze section of the Jiguang Expressway reconstruction and expansion project by the China Construction Association, the fourth section of the completion of the asphalt top layer of SMA-13 first paving construction, marking the project formally entered the half-width of the sprint stage. The paving of the upper layer paving length of 300 meters, the standard section width of 18.75 meters, SMA modified asphalt paving material 560 tons.
The traditional bridge widening generally use resection, chiseling and other methods, the original bridge flange plate, table cap, cover beams and other parts of the damage is more serious, will greatly reduce the old and new bridge joints parts of the connectivity and overall stability. To this end, the project team, in conjunction with Qilu Expressway Co., Ltd, Shandong University, the first application of the bridge in Shandong Province, the old and new splicing wide transformation technology, the innovative introduction of ultra-high-performance concrete (UHPC) materials, increasing the toughness and shear-resisting capacity of the joint position.
Through the use of new splicing structure design, efficiently complete the overall connection of the new and old bridge structure, further optimize the structural stress form, the new and old bridge splicing parts of the connection performance and overall stability significantly improved, thus extending the service life of the highway, improve the efficiency of vehicular traffic.
Jiguang high-speed expansion project adhere to the "Internet + Transportation Infrastructure" work idea, the application of engineering comprehensive information management system - "cloud intelligent management" platform, to achieve intelligent management. The element of technological empowerment jumped out. The project team comprehensively utilizes cloud computing, big data, mobile Internet, Internet of Things + GIS, artificial intelligence and other technologies to effectively integrate and expand. "Project management, mixing production, testing" and other processes of data supervision, as well as video surveillance, pavement process monitoring, prediction and early warning and other "intelligent facilities" to achieve intelligent management of project construction.
Relying on information technology digital means, the project department can fully grasp the construction safety and quality data, not only can realize the process of controllable and manageable, data can be checked and traced, but also can realize the data accurate and informative, fine management, effectively reducing the manpower, material resources investment, will help the project high-quality construction to become a high-quality project, high-quality engineering, peace of mind project.
With the goal of "environmental protection, quality improvement, cost reduction and efficiency", the project team has built a high-quality comprehensive site model integrating "standardization, intelligence and integration", including a smart beam factory, a steel processing and distribution center, and a centralized concrete supply station, achieving It realizes centralized management of personnel, centralized use of equipment, centralized supply of materials, centralized scheduling of production, and centralized planning of routes, and explores standard templates for subsequent highway reconstruction and expansion projects.
Jinan-Heze section of Jiguang Expressway reconstruction and expansion project is 152.7 kilometers long, adopting the construction plan of "two-side splicing and widening", expanding the existing expressway by "four to eight", with a design speed of 120 kilometers/hour, and an overall roadbed width of 42 meters. Among them, China Construction Bureau two companies to build the four standard section of the total length of 19.16 kilometers, the main construction content, including roadbed, pavement, bridges and culverts, interchanges and other hubs. After the project is completed and opened to traffic, it is of great significance to accelerate the construction of a modern comprehensive transportation system and promote the economic and social development of Southwest Lu region.