01
Jinan Daxi Ring Project Tuhaihe Super Bridge main bridge successfully merged
On September 2, the Tuhaihe Super Bridge, one of the important control projects of the Jinan Ring Expressway Second Ring Road West Ring Section Project (hereinafter referred to as the Jinan Daxi Ring Project), successfully merged the main bridge, marking the completion of the main project of the bridge and creating favorable conditions for the bridge to be completed and opened to traffic on schedule.
Tuhaihe River Super Bridge is 1067 meters long, the entire bridge has 28 spans, a total of 20 connections, a maximum span diameter of 130 meters, a single-span bridge width of 16.5 meters, and a maximum pile foundation length of 100 meters. The main bridge adopts the structure of a single box, single chamber variable cross-section, prestressed concrete, continuous beam. During the construction process, the project company attached great importance to it and established a special working group. At the same time, experts were invited to provide on-site guidance, keep a close eye on key processes, and control quality and safety risk control points in real time. Faced with the problems of ultra-long pile foundation construction of the main pier, large amount of concrete pouring in a single time, and difficult to control the pouring temperature, the project company organized all participating units to formulate sub-item node plans, introduced "worry-free" concrete pouring equipment, high-precision concrete electronic thermometer and other instruments and equipment, strengthened the refined management of the process, continuously optimize the construction technology according to the actual progress on the site, strictly control safety and technology, and strive to create a safe and civilized green construction model site, and complete the construction tasks with high standards.
2022 is a critical year for the Jinan Great West Ring Project. The successful alliance of the Tuha River Super Bridge has inspired the morale of all participants. In the next step, the Jinan Great West Ring Project will continue to be organized scientifically, overcome difficulties, further improve the quality and safety control level of project, and ensure the high-quality completion of annual task goals. (Source: The Paper )
02
Hangzhou-Quzhou High-speed Railway Full-line control project Yantangshan Tunnel successfully penetrated
On September 3, the full-line control project of the Hangzhou-Quzhou High-speed Railway - Yantangshan Tunnel was completed. The tunnel is 2586.7 meters long and has a maximum burial depth of 215 meters. It is constructed using New Aofa . The tunnel is located in a hilly area, with large undulating terrain and ditch development, and there are poor geology such as water influx, karst, heat damage, faults, and bias. During the construction process of , the project department practiced the construction concept of "cooperation between mountains and seas, integration of Hangzhou and traffic, unity of roads and land, and beautiful channels", with the goal of creating high-quality projects and model projects, and vigorously promoted standardized operations and information management. They actively explored and studied process tooling, and adopted process tooling such as advance geological forecasting, tunnel arch wall anchor drilling rig, excavation trolley roof protection rack, hydraulic automatic window casting trolley, automatic maintenance system and other process tooling. Adhere to the principles of "weak blasting, ahead of the pipe, short stepping, strong support, early closure, and frequent measurement", strictly control tunnel over-under-excavation, and ensure normalized tunnel excavation quality control. The project department implements a leadership system, supervises the safety and civilized construction of tunnels every day, ensures strong management and no errors, and makes every effort to ensure the smooth progress of tunnel construction. Hangqu high-speed railway is an important part of the intercity rapid transportation network in the Yangtze River Delta , which is of great significance to further expand and improve the skeleton of Zhejiang Province's railway network and improve the Yangtze River Delta intercity network. (Source: CCTV.com )
03
Nanheng Expressway Shanjiang Bridge was successfully completed, and the project construction has made breakthrough progress
On the morning of September 2, the latest news came from the construction of Nanheng Expressway. The first standard project of Nanheng Expressway was completed, which marked the successful completion of the task of 9 bridges in the section and the breakthrough progress in the project construction.
Since the beginning of summer, the construction of Nanheng Expressway has continued to face extreme weather such as high temperatures, typhoons, thunderstorms, and the test of the new crown pneumonia epidemic. The Nanheng Project Department responded in an orderly and calmly manner, adhered to problem-oriented approach, adopted full-process control, coordinated box beam prefabrication, beam section transportation, channel opening, bridge machine assembly, beam mount operation, bridge deck system construction and other factors to ensure that all work is linked together and the process is smooth, effectively solving problems such as poor connection of work shifts, and providing guarantees for the smooth progress of bridge erection operations. "The first standard project line of Nanheng Expressway is 13.46 kilometers long, with a total of 12 bridges, and a total of 932 prefabricated box beam erection tasks. At present, 692 pieces have been erected, and the entire civil engineering project completed by more than 90%. According to the project leader, in the face of the pressure of the construction period, the project department has always adhered to the main task of building the beam, comprehensively sorted out the remaining project volume, refined the node task objectives, implemented grid management, moved the production docking meeting to the construction site, organized construction scientifically and reasonably, adopted the "dry the two ends and break the middle" method, used the morning and evening periods, avoided the high temperature period in the afternoon, pressed the "fast forward button" for the project promotion, and hung the "acceleration gear".
It is reported that the Nanheng Expressway is a newly built eight-lane highway in Guangxi. It is a major project for the construction of Dongrong Road in Guangxi. The line is 110 kilometers long and has a designed speed of 120 kilometers per hour. It is planned to be completed and opened to traffic by 2023. After completion, it is of great significance to improve the integrated development level of Beibu Gulf Urban Agglomeration, strengthen the radiation and driving role of Nanning , accelerate the flow of goods and personnel in the areas along the route, promote rural revitalization and employment of residents, and help the economic development of the area. At present, the construction of civil engineering projects on the entire line has come to an end, and some traffic safety projects and pavement projects are being carried out one after another. (Source: China Economic Network )
04
Shanghai-Suzhou-Hu Railway Cross-Xitang Channel Cable-stayed Bridge main tower was capped
At 20:58 on September 3, at the scene of the cable-stayed bridge of the Shanghai-Suzhou-Hu Railway Cross-Xitang Channel, machinery roared continuously. As the last concrete pouring was completed, the main tower of the Shanghai-Suzhou-Hu Railway Cross-Xitang Channel Cable-stayed Bridge main tower of the Shanghai-Suzhou-Huzhou Railway Cross-Xitang Channel Cable-stayed Bridge was successfully capped. This is another important node after the successful lifting of the steel beam of the cable-stayed bridge on August 19, laying a solid foundation for the successful completion of the Shanghai-Suzhou-Huzhou Railway.
The cable-stayed bridge of the spanning pond channel topped this time is a cable-stayed bridge with double towers, double cable surfaces, and double-sided box steel-concrete combination beam. The main pier bearing is 43.2 meters long, 23.2 meters wide and 5 meters high. The main tower adopts H-shaped, with heights of 95 meters and 97 meters respectively. It is reported that the total height of the main tower of Pier No. 198 in Shanghai-Kunming Line is 93.5 meters, with a total of 17 sections and nearly 27 floors high. The lower tower column is a separate hollow tower column with cow legs, and the middle tower column and the upper tower column are two separate inclined tower columns. During the construction of the main tower, the project department carefully organized and introduced advanced modern technologies such as information management and BIM technology. It held construction coordination meetings many times to clarify the key points of construction, and responsibilities were assigned to people. In combination with the specific construction process, it continuously optimized and improved, from the design of the formwork to the optimization of the support system, and then to the optimization of the plan, providing strong technical support and theoretical guarantees for construction.
Since the beginning of summer, due to the high temperature and the epidemic, the Shanghai-Suzhou-Hu Project Department has scientifically allocated construction shifts and implemented staggered construction. It reasonably arranged the construction tasks on the premise of ensuring safety and quality. It was successfully launched at 15:48 pm on the 3rd. It took 5 hours and 10 minutes and the 68 square meters of concrete was poured, ensuring the smooth ceiling of the main tower of Pier 198 in the Shanghai-Kunming Line. So far, the entire bridge has completed 54.7%, and the other three main towers are expected to be capped one after another by the end of October.
As a full-line control project of the Shanghai-Suzhou-Huzhou Railway, since the start of the project, all parties involved have attached great importance to it, worked together, and combined with the characteristics of the project, and established a special leading group to carefully analyze the main safety hazards in the construction process at this stage, identify safety risks, formulate inspection and rectification measures, organize production scientifically and reasonably, and successfully complete the construction task of the main tower under the premise of ensuring safety and quality.The smooth capping of the first main tower of the cable-stayed bridge across the slitting pond channel has laid a solid foundation for the next step of the construction of key nodes such as the steel box girder of the main bridge and the transformation of the full-bridge cable system, and provided reliable guarantees for completing the main bridge project construction task. (Source: Wenhuibao )
