of June 17, with the completion of the last concrete pouring of the underground roof, the underground structure of the main tower of Zhonghai Tianfu Center Project, a landmark super high-rise building in Tianfu Headquarters Business District, Tianfu New District, Sichuan, was successfully capped and entered a new stage of construction in an all-round way.
It is reported that the tower is 489 meters high and will become a new landmark in southwest China after completion. After the installation of the building machine is completed, the main structure will enter the high-speed lifting stage. According to the plan, it will reach the first height in Chengdu in 2026, and will be completed and put into production in December 2027. The
whole project covers an area of about 53500 square meters, with a total building area of about 653000 square meters, including a 489-meter main tower, a 200-meter auxiliary tower, a 100-meter hotel and a four-storey block-style business. The auxiliary tower has been put into use. According to Zhang Qinglin, executive general manager of Chengdu Chaota Company of Zhonghai Group, the project construction unit, Zhonghai Tianfu Center is a large-scale complex integrating Grade a office buildings, commerce, hotels and sightseeing with top international standards. After completion, it will further improve the service function and urban value of Tianfu Headquarters Business District, which is of great significance to promote local economic development. Chen Bin, the project manager of the Eighth Bureau of
China Construction, said that the project completed the construction of pile foundation anchor within 60 days after the calibration, and completed the construction of the main tower foundation slab within 120 days. During the construction of underground structures, a total of 810,000 cubic meters of earth excavation, about 68,000 cubic meters of concrete pouring, about 20,000 tons of steel consumption and more than 110,000 square meters of formwork erection area have been completed.
It is reported that the project has the characteristics of large volume, many complex nodes and high quality requirements, and its complexity is in the forefront of domestic super high-rise projects. Only in the stage of underground structure construction, many technical problems such as deep foundation pit and mass concrete pouring have been tackled successively, which has set a new record for the same type of project in China.
Moreover, the main tower of Zhonghai Tianfu Center project shares the basement with the surrounding hotels and businesses. The basement has five floors and is buried about 31.2 meters deep. It is close to the double-track subway under construction and in operation. "The project belongs to a deep foundation pit, and the surrounding environment is complex. The subway line 19 under construction passes through the project site, which puts forward higher requirements for the excavation of foundation pit and the control of construction disturbance in the early stage." According to Shen Yu, the technical director of the project of the Eighth Bureau of China Construction, after repeated demonstration, in the process of foundation pit excavation, the project established a low-disturbance construction scheme of sub-warehouse excavation.
"The so-called sub-warehouse excavation is based on the construction simulation results and site conditions, the subway underpass site covering soil is divided into several blocks, through the excavation of each block, gradually complete the construction work of the subway overlaying site, combined with real-time monitoring data and on-site safeguards, to minimize the impact of the construction of the overlaying site on the subway line."
In addition to the impact of the subway, in the construction of underground structures, the project also overcomes the complex geological conditions, the number of reserved openings for the raft foundation, the number of elevation changes, the space of the storage yard and the construction by means of the detection technology of the super-large tonnage anchor pile counterforce pile foundation, the technology of the built-in construction elevator in the foundation pit and the technology of the factory steel bar processing yard. And high-efficiency and high-quality construction is realize.
▲ The mass concrete pouring of the project effect drawing
has set a new record
for similar projects in China. "The underground structure of the whole project covers an area of about 150000 square meters, and the raft thickness of the main tower foundation is 5.5 meters, reaching 7.4 meters locally." The volume of concrete poured at one time reached 41000 cubic meters. Chen Bin disclosed that during the period, in view of 41000 cubic meters of mass concrete pouring, the project innovatively adopted a green, low-carbon, standardized and modular "chute + chute + dump" pouring method, combined with the real-time monitoring platform for mass concrete independently developed by the project. It solves the problems of difficult site management, large amount of information coordination and poor instantaneity of information synchronization in the traditional large flow and multi-point mass concrete pouring process. During the
construction process, the project mobilized more than 600 concrete trucks, dispatched more than 6000 vehicles, and completed the pouring task at one time in 39 hours, with the highest pouring speed reaching 1600 cubic meters per hour, setting a new record for similar projects in China. At the same time, the pouring method also meets the requirements of greener and lower carbon. Compared with the traditional process, the whole process reduces the fuel consumption by 13700 liters, reduces the 60280 of electricity consumption, and reduces carbon emissions by 60 tons.
"Zhonghai Tianfu Center is a modern large-scale complex, facing the complexity of the project, we have also adopted a large number of intelligent construction technologies in the construction process." According to Shen Yu, the chief engineer of Zhonghai Tianfu Center Project, from the beginning of construction, the project team of the Eighth Bureau of China Construction established the idea of "BIM + Intelligent Site Platform + Intelligent Equipment" as the core of intelligent construction, applied BIM technology to model construction in the whole process, built a digital exhibition hall efficiently, and actively explored the production of construction robots and equipment. During this period, more than 10 "black technologies" of various buildings have been popularized and applied.
"For example, in the basement construction stage, for concrete pouring, we ensure the efficient and smooth pouring of the new chute layout through self-developed self-propelled chute cleaning robot and high-frequency vibration dredging robot, combined with concrete leveling robot." Shen Yu said.
In addition to robots, the project also introduced ground penetrating radar, artificial intelligence AI, unmanned weighbridge receiving system, UAV aerial survey, three-dimensional laser scanning and other high and new technologies, injected intelligent energy into site construction safety management, material management, earthwork excavation measurement and other aspects, and was successfully selected as the first batch of intelligent construction pilot projects in Sichuan Province.
It is reported that the new progress of Zhonghai Tianfu Center as a key project
in Tianfu New Area has also brought new feelings to the surrounding enterprises and residents.
"I am very happy to see the development of Tianfu New Area getting better and better. Our company has been working here for four years, witnessing and accompanying the growth of Tianfu New Area step by step. The landmark buildings of Tianfu Headquarters Business District are gradually emerging with the design, which is really impressive.". As a key high-tech enterprise in the new economy, Chengdu Zhongke Micro is mainly engaged in the development of new technologies and products in the field of civil-military integration, such as new electronic countermeasures, intelligent unmanned systems and low-orbit satellite communication systems. In the future, we will continue to work hand in hand with Tianfu New Area to write a more magnificent chapter and contribute to the construction of Park City. Chengdu Zhongke Weicheng Fang said. He Xianghua, a resident
of Zhonghai Tianfu, said: After moving into Tianfu New District, I have been paying attention to the construction and development of the headquarters business district every day. The development speed of Tianfu New Area has not disappointed us. Every day, there are different changes. From urban development to ecological environment construction, the living environment is getting better and better. Especially today, I am really happy to see the new progress of Zhonghai Tianfu Center. There will be one more place to punch in the future.
In the next stage, the project of Zhonghai Tianfu Center will enter the construction stage of the main body on the ground in an all-round way, and will begin to install the "aerial building machine", which is tailored for the project and contains the most advanced super-high-rise technology in Chinese architecture.
It is reported that this building machine can realize the layered interpenetration of various construction processes of the main structure, greatly improve the construction efficiency, and also provide a factory-like construction environment for workers working at high altitude to ensure construction safety. In addition, the building machine will carry a number of intelligent construction technologies, such as attitude monitoring, safety inspection and quality inspection, to make the construction of super high-rise structures safer, low-carbon and intelligent.
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