Qingdao 10 subway under construction is advancing at full speed
Machinery roaring, cranes standing, construction vehicles shuttle back and forth, workers nervous and busy construction ...... early summer, strolling through the streets, the dark green subway construction fence from time to time into the eyes. At present, Qingdao subway lines under construction reached 10, 188 kilometers, line network from the main city to the west coast, Jimo, Jiaozhou and other places to extend radiation. Away from the hustle and bustle of the ground, 16,000 subway builders are working day and night in the quiet underground, building momentum for the "Qingdao on the tracks" dream.
Currently, Qingdao is in the urban area "expansion" of the important period of development, traffic congestion and other "urban disease" is still affecting people's travel experience. Vigorously develop public **** transportation, improve the level of urban green travel is to practice the idea of ecological civilization, to achieve the "double carbon" goal, alleviate traffic congestion is an important initiative. This year is the key year of urban renewal and construction of the deepening of the action, continue to promote the construction of subway lines is not only the people's livelihood, but also the development of the city needs.
Reporters from the city subway construction and development along the construction of the command was informed that, at present, the 10 lines under construction is full speed ahead: 6 line a trial run toward the end of the year, 2024, the goal of the opening of the car full sprint. 2 line west extension, 8 line south to speed up the construction of civil engineering. Among them, the west extension of line 2 is planned to realize the end of the hole through, 2024 open to traffic. Phase III of the seven lines (Line 5, Line 8 extension, Line 9 Phase I, Line 15 Phase I, Line 2 Phase II, Line 6 Phase II, Line 7 Phase II) to promote the "three relocations and one change" work, 197 sites have been into the field (*** 210 sites), the rate of entry into the field reached nearly 94%. Among them, 65 stations have entered the main construction stage, accounting for 64% of the total, the first batch of TBM, shield has entered the field digging.
Line 6 Phase I:
All-out sprint for empty trial operation
Line 6 Phase I is a major implementation category project in Shandong Province in 2023, and is a high-capacity backbone line running through the center of the West Coast New District, which started construction in December 2019. The Phase 1 project starts from Xintun Road Station in the west and ends at Eco-Park Station in the north, with a total length of 30.8 kilometers.
The entire line was opened in early March, the first "Blue Dolphin" electric bus arrived at the end of March at the Grabbing Horse Mountain Vehicle Base, and the test line hot slip was successfully completed on May 6, and the TACS system (Train Autonomous Crew System) entered the stage of train mobilization....... This year, the first phase of the Line 6 project has been completed in a row, and the project is now under construction. The first phase of Line 6 project has set the "Qingdao speed" of subway construction. At present, the project is stepping up to carry out track laying, electromechanical engineering installation and other construction, plans to rail pass in July, August electric pass, the end of the year to realize the empty test run, 2024 open to traffic.
Compared with other lines, the train of Line 6 is the most characteristic. From the outside, the vehicle will be elegant and dynamic blue as the theme color, coupled with "high intelligence" characteristics, is affectionately known as the "Blue Dolphin". From the technical level, it is not only the first driverless subway line in Qingdao, but also the first GOA4 TACS (Train Autonomous Control System) demonstration line in China. Train, cancel the traditional driver's room, the driver's room and the passenger room as one; running "IQ" super, according to the environment of the independent decision is fast or slow, is in or out. After the line is opened and running, with its own "brain" and "clairvoyance" of the "smart train" will bring passengers a new travel experience.
From the transportation point of view, Line 6 passes through large communities, colleges and universities, well-known medical institutions, after the opening will greatly improve the travel efficiency of residents along the line, easing the pressure of ground transportation. "From the perspective of the entire line network, this line is both an artery project connecting various major functional areas of the West Coast, and an important part of the city's rail transit Jiaozhou Bay loop network." Liu Quanwei, general manager of Qingdao Metro Group West Coast Construction Branch, said that the line connects the West Coast Transportation and Business District, Ocean Hi-Tech District, Lingshan Bay Film and Television Culture Industry Zone, Qingdao Development Zone and International Economic Cooperation Zone, connects the important functional groups in West Coast New Area and covers the main passenger corridors, and can realize the rapid connectivity between West Coast urban area and East Coast urban area and North Coast urban area through a single transfer, which promotes the Qingdao "
The three cities linkage" spatial development strategy of Qingdao is effectively implemented to better support the further enhancement of the development level of the West Coast New Area.
Three phases of the line:
The main structure of the construction of the full momentum
Just like the construction of a tall building to build a solid foundation, the quality of the construction of the base plate is of great significance to the station. Only the first firm foundation, the subsequent construction of the main structure will be more "bottom". 25 April, Qingdao Metro Group, the first construction branch of the organization to participate in the construction of units to the construction site of Line 2 Hechuan Road station to carry out the first section of the first excavation station of Line 2, the first section of the first bottom of the quality of the Observation. The reporter saw at the construction site, dozens of workers lined up, is carrying out the bottom plate steel binding operations, a ride, a hook, a twist ...... action smooth and rapid; side wall construction open scaffolding, the station's main structure has entered the stage of comprehensive dry. At present, Hechuan Road station earth excavation has been completed 80%.
Hechuan Road station is the third station of the second phase of Line 2 project, is located in the east side of the intersection of Hechuan Road and Jinshui Road, for the underground two-story island-type excavation station, a total length of 211 meters. In order to accelerate the construction progress of Hechuan Road Station and realize the target of non-seepage and non-leakage of the main structure, under the leadership of Qingdao Metro Group, the project department, together with the project headquarters of China Railway Construction Qingdao Metro Line 2, Shandong University and other scientific research groups were set up to conduct in-depth research on concrete proportion, formwork materials, mold releasing agents and other processes and materials, and to determine a better encapsulation, improved flow state, and ease of construction of high-performance concrete construction ratios. The team also introduced a new type of polymer composite. A new polymer composite formwork was also introduced. "Our innovative combination of plastic formwork and stainless steel cladding is equivalent to the transformation and upgrading of the traditional plastic formwork, which has the effect of 1+1>2. Compared with traditional wood templates and stainless steel templates, the polymer composite template turnover times can reach up to 100 times, but the cost can be reduced by half." Guo Youqian, concrete team leader of Hechuan Road Station, introduced.
Through innovative construction techniques, the second phase of Line 2 project is fully promoting the construction speed. Line 5 and line 8 branch line, is relying on mechanized equipment to achieve the speed of digging. April 24, "Pioneer" double shield TBM and "Jiaozhou Bay 1" shield machine from line 5, line 8 branch line respectively, marking the subway three project into a new phase of mechanical digging. The use of TBM and shield machine is an important manifestation of the mechanization of Qingdao Metro construction, which enhances the efficiency by 10 times compared with the traditional digging method. Qingdao Metro Phase III seven lines mechanical digging rate of more than 95%, located in the country's forefront, including Line 5 mechanical digging rate of 97.1%, Line 8 branch mechanical digging rate of 96.4%.
The Line 8 extension is a rail transit line connecting Jiaozhou and downtown Qingdao, starting from Line 8 Dajian Station and ending at Jiaozhou Railway Station, passing through Chengyang District and Jiaozhou City. In the line 8 extension project Dajian station construction site, about 90 meters long shield machine "a aviation 11" is stepping up construction. Gantry cranes, car cranes, shield machine and other equipment and on-site construction personnel **** with the outline of a busy construction scene. At 12:00 noon, construction workers holding a boxed lunch, squatting in a corner of the shield starting well to eat lunch. "In order to save time and speed up the construction progress, lunch is sent to the well to eat, eat and continue to do." Hao Jinxing, production manager of Dajian Station of CCCC First Aviation Bureau, told reporters that recently, the station has completed the shield set assembly debugging and starting, adding nearly 10 management personnel and more than 30 workers, working overtime under the premise of ensuring safety and quality, and striving for the early completion of the tunnel through the target.
The first phase of Line 9 project starts from Haixi Village Station and ends at Qianjin Community Station, with a total length of 16.6 kilometers and 13 stations, which mainly serves the core area of Chengyang and connects the streets of Shenghongtan, Chengyang and Shifu Town.On May 6, the first phase of Line 9 project Haixi Village Station passed the acceptance of the excavation conditions of the foundation pit, and it has become the first station in the whole line to pass the acceptance of the excavation conditions and laid the foundation for the subsequent structural construction and shield start-up. The foundation was laid for the subsequent structure construction and shield structure launching. Previously, the first underground diaphragm wall of Line 9 Zhengyang Middle Road was successfully installed, and the station formally entered the construction stage of the main enclosure structure. Zhengyangzhong Road station *** four floors, the average depth of the diaphragm wall is about 36.5 meters, Qingdao subway construction since the largest depth of the diaphragm wall.
Innovation leadership:
Construction of world-class subway "hand"
Last year, Qingdao Metro released the "construction of world-class subway target system (construction)", identified "innovation as the lead", "to create a safe, high-quality, high-quality, high-quality, high-quality, high-quality subway". The "1+6" goal system is to create a "safe, high-quality, efficient, green, intelligent and harmonious" metro project. After one year of practice, the goal of building a world-class subway has been y rooted in people's hearts, laying a foundation for the efficient and safe advancement of the three phases of the line. This year, Qingdao Metro will use the construction of world-class subway target system and team building two grips, to accelerate the high-quality development of subway engineering.
"The first-class metro system highlights the importance of innovation, solving problems with innovative ideas and enhancing effectiveness with innovative approaches." Qingdao Metro Group party secretary and chairman Zhang Jun said that with the full-scale construction of the three-phase line as an opportunity, Qingdao Metro will systematically promote high-performance concrete, prefabricated assembly construction, large-span tunnel pre-stressing active support, pillar-less stations and other construction technologies. The three-phase line will also adopt a number of comprehensive technologies such as integrated equipment, direct expansion evaporative condensation system, and increase the research and application of advanced technologies such as smart construction site, smart operation and maintenance, flywheel energy storage, permanent magnet motor, new type of energy tube, TACS, etc., to enhance the green and intelligent development of Qingdao Metro.
The team is the basic unit of construction production and the direct implementer of project management. In the engineering construction sector, Qingdao Metro will fully implement the "small legislation + secondary distribution" as the main content, "two into the three rings, four management and five guarantee" as the main line of work of the team construction, the implementation of participatory democratic management in the front line of the construction, and to open up the "last kilometer" of the project management. The "last kilometer", the implementation of the work to the "palm surface", to further consolidate the construction of a world-class subway foundation, to stimulate the front-line builders to start up endogenous motivation, and continue to enhance the construction of the line of the level of safety management and quality of the project. "By carrying out the construction of the team, the project has realized the transformation of the management personnel from the management personnel to the operation personnel to all personnel to grasp the **** management, and effectively promote the construction production safety, high quality and high efficiency to further enhance." China Railway Construction Qingdao Metro headquarters deputy general manager Zhang Aijun y touched.